Multi-level regulation of opioid-induced respiratory depression

B Palkovic, V Marchenko, EJ Zuperku… - …, 2020 - journals.physiology.org
Opioids depress minute ventilation primarily by reducing respiratory rate. This results from
direct effects on the preBötzinger Complex as well as from depression of the …

Circuits in the rodent brainstem that control whisking in concert with other orofacial motor actions

LE McElvain, B Friedman, HJ Karten, K Svoboda… - Neuroscience, 2018 - Elsevier
The world view of rodents is largely determined by sensation on two length scales. One is
within the animal's peri-personal space; sensorimotor control on this scale involves active …

[HTML][HTML] Parabrachial tachykinin1-expressing neurons involved in state-dependent breathing control

JW Arthurs, AJ Bowen, RD Palmiter… - Nature …, 2023 - nature.com
Breathing is regulated automatically by neural circuits in the medulla to maintain
homeostasis, but breathing is also modified by behavior and emotion. Mice have rapid …

Differential impact of two critical respiratory centres in opioid‐induced respiratory depression in awake mice

AG Varga, BT Reid, BL Kieffer… - The Journal of …, 2020 - Wiley Online Library
Key points The main cause of death from opioid overdose is respiratory depression due to
the activation of µ‐opioid receptors (MORs). We conditionally deleted MORs from neurons in …

Organization of the core respiratory network: insights from optogenetic and modeling studies

J Ausborn, H Koizumi, WH Barnett… - PLoS computational …, 2018 - journals.plos.org
The circuit organization within the mammalian brainstem respiratory network, specifically
within and between the pre-Bötzinger (pre-BötC) and Bötzinger (BötC) complexes, and the …

A spatially dynamic network underlies the generation of inspiratory behaviors

NA Baertsch, LJ Severs… - Proceedings of the …, 2019 - National Acad Sciences
The ability of neuronal networks to reconfigure is a key property underlying behavioral
flexibility. Networks with recurrent topology are particularly prone to reconfiguration through …

Kölliker-Fuse/Parabrachial complex mu opioid receptors contribute to fentanyl-induced apnea and respiratory rate depression

SE Saunders, ES Levitt - Respiratory Physiology & Neurobiology, 2020 - Elsevier
Overdoses caused by the opioid agonist fentanyl have increased exponentially in recent
years. Identifying mechanisms to counter progression to fatal respiratory apnea during …

Interaction between the retrotrapezoid nucleus and the parafacial respiratory group to regulate active expiration and sympathetic activity in rats

DB Zoccal, JN Silva, WH Barnett… - … of Physiology-Lung …, 2018 - journals.physiology.org
The retrotrapezoid nucleus (RTN) contains chemosensitive cells that distribute CO2-
dependent excitatory drive to the respiratory network. This drive facilitates the function of the …

[HTML][HTML] Respiratory rhythm generation and pattern formation: oscillators and network mechanisms

MGZ Ghali - Journal of integrative neuroscience, 2019 - imrpress.com
The respiratory rhythm is generated by the interaction of oscillators disparately distributed
throughout the pons, medulla, and spinal cord. According to the classic model, the …

Inhibitory control of active expiration by the Bötzinger complex in rats

KC Flor, WH Barnett, M Karlen‐Amarante… - The Journal of …, 2020 - Wiley Online Library
Key points Contraction of abdominal muscles at the end of expiration during metabolic
challenges (such as hypercapnia and hypoxia) improves pulmonary ventilation. The …