Article
Biology
Nathan A. Baertsch, Nicholas E. Bush, Nicholas J. Burgraff, Jan-Marino Ramirez
Summary: Research has shown that opioid-based drugs induce respiratory depression by hyperpolarizing MOR-expressing preBotC neurons, leading to a decrease in the frequency and regularity of the respiratory rhythm. MOR activation reduces pre-inspiratory spiking and suppresses excitatory synaptic transmission, disrupting network-driven rhythmogenesis. These dual mechanisms of opioid action make the inspiratory rhythm-generating network particularly vulnerable to collapse when challenged with exogenous opioids.
Article
Biology
Boris Gourevitch, Teresa Pitts, Kimberly Iceman, Mitchell Reed, Jun Cai, Tianci Chu, Wenxin Zeng, Consuelo Morgado-Valle, Nicholas Mellen
Summary: Breathing is a robust behavior that is continuously modulated to maintain blood-gas homeostasis and intercalating orofacial behaviors. The mechanism and constituents of the respiratory rhythm generator have been difficult to identify, but recent evidence suggests a dispersed and heterogeneous network synchronized by electrotonic coupling. This coupling enables functional multiplexing and complicates the identification of the rhythmogenic mechanism.
Article
Physics, Multidisciplinary
Hongtao Hua, Huaguang Gu
Summary: This paper simulates rhythm transitions modulated by several physiological factors and investigates the ionic currents and underlying bifurcation mechanism of respiratory rhythm transitions. The findings are significant for the modulation of respiratory rhythms.
EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS
(2022)
Article
Neurosciences
Adam M. P. Miller, Alex D. Jacob, Adam I. Ramsaran, Mitchell L. De Snoo, Sheena A. Josselyn, Paul W. Frankland
Summary: The brain organizes experiences into memories that guide future behavior. Hippocampal CA1 activity reflects predictive models that contain information about future events. Mice that learned structured problems integrated their experiences into a predictive model containing solutions to upcoming novel problems. Retrieving the model improved discrimination accuracy and facilitated learning. Calcium imaging showed that hippocampal ensemble activity became more stable as mice formed a predictive model. The hippocampal ensemble reactivated during training and incorporated new activity patterns from each problem.
Article
Anesthesiology
Barbara Palkovic, Jennifer J. Callison, Vitaliy Marchenko, Eckehard A. E. Stuth, Edward J. Zuperku, Astrid G. Stucke
Summary: This study demonstrated that opioid reversal in the parabrachial nucleus/Kolliker-Fuse complex plus pre-Botzinger complex only partially reversed respiratory depression from analgesic doses, and even less from apneic opioid doses. The lack of recovery points to opioid-induced depression of respiratory drive that determines the activity of these areas.
Article
Gastroenterology & Hepatology
Song-Yang Zhang, Rosa J. W. Li, Yu-Mi Lim, Battsetseg Batchuluun, Huiying Liu, T. M. Zaved Waise, Tony K. T. Lam
Summary: The study demonstrated that changes in taurine-conjugated bile acids mediated by upper small intestinal microbiota can alter insulin action through the FXR in the dorsal vagal complex, providing insights into the role of gut microbiome in regulating host insulin resistance.
Article
Engineering, Mechanical
Zeric Tabekoueng Njitacke, Jan Awrejcewicz, Balamurali Ramakrishnan, Karthikeyan Rajagopal, Jacques Kengne
Summary: This study introduces a novel small neural network model, which achieves heterogeneous coupling through coupling and is numerically investigated using various nonlinear analysis tools, finding that the model can exhibit three distinct electrical activities simultaneously.
NONLINEAR DYNAMICS
(2022)
Article
Neurosciences
Jiang-Jian Hu, Yuexin Liu, Hongyu Yao, Boxu Cao, Huabao Liao, Ruodi Yang, Peng Chen, Xue-Jun Song
Summary: The rapid downregulation of KCC2 in the VPM is found to be a common mechanism for the brain to regain consciousness from anesthesia in mice. This downregulation is driven by ubiquitin-proteasomal degradation mediated by Fbxl4. Phosphorylation of KCC2 at Thr1007 facilitates the interaction between KCC2 and Fbxl4, leading to GABA(A) receptor-mediated disinhibition and accelerated recovery of VPM neuron excitability and consciousness.
NATURE NEUROSCIENCE
(2023)
Article
Chemistry, Inorganic & Nuclear
Piero Mastrorilli, Vito Gallo, Mario Latronico
Summary: Compound 1 is an unsymmetrical phosphinito diplatinum species that reacts smoothly with nucleophiles, electrophiles, dihydrogen, and terminal alkynes due to the simultaneous presence of a soft and hard binding atom.
INORGANICA CHIMICA ACTA
(2021)
Article
Chemistry, Multidisciplinary
Qin Zhu, Rulin Qiu, Shicheng Dong, Guixiang Zeng, Jun Zhu
Summary: The study demonstrates that a NNN-type pincer phosphorus complex can serve as a catalyst for coupling dinitrogen with small molecules, facilitating N-2 activation and fixation.
CHEMISTRY-AN ASIAN JOURNAL
(2021)
Article
Neurosciences
Anders Nelson, Brenda Abdelmesih, Rui M. Costa
Summary: This study reveals the important role of corticospinal neuron collaterals in sensorimotor cortex and motor control, with the dorsolateral striatum identified as the main target of these collaterals. It also shows that different corticospinal neurons have biased targeting of spinal cord circuits and encode complex information related to movements and motor sequences. Furthermore, the research demonstrates a logic of coordinated connectivity between forebrain and spinal circuits through corticospinal neuron populations, suggesting that differences in postsynaptic connectivity determine motor specificity.
NATURE NEUROSCIENCE
(2021)
Article
Oncology
Lissete Sanchez-Magraner, Juan Gumuzio, James Miles, Nicole Quimi, Purificacion Martinez del Prado, Maria Teresa Abad-Villar, Fernando Pikabea, Laura Ortega, Carmen Etxezarraga, Salvador Martin-Algarra, Maria D. Lozano, Monica Saiz-Camin, Mikel Egurrola-Izquierdo, Inmaculada Barredo-Santamaria, Alberto Saiz-Lopez, Jenifer Gomez-Mediavilla, Nerea Segues-Merino, Maria Aranzazu Juaristi-Abaunz, Ander Urruticoechea, Erica J. Geraedts, Kim van Elst, Niels J. M. Claessens, Antoine Italiano, Christopher J. Applebee, Sandra del Castillo, Charles Evans, Fernando Aguirre, Peter J. Parker, Veronique Calleja
Summary: Immunomodulatory ligand-receptor interactions play a crucial role in cancer immunoevasion. A study on non-small cell lung carcinoma patients revealed the heterogeneity of PD-1/PD-L1 immune checkpoint engagement and its correlation with treatment response. The functional readout of PD-1/PD-L1 interaction can significantly improve patient stratification for immunotherapy.
JOURNAL OF CLINICAL ONCOLOGY
(2023)
Article
Multidisciplinary Sciences
Sophie St-Cyr, Daniel D. Child, Emilie Giaime, Alicia R. Smith, Christine J. Pascua, Seung Hahm, Eddine Saiah, Beverly L. Davidson
Summary: A novel small molecule mTORC1 pathway activator, NV-5297, has been found to improve disease phenotypes in a mouse model of Huntington's Disease, including increased striatal volume, improved motor learning, and heart contractility.
Article
Endocrinology & Metabolism
Mette Q. Ludwig, Wenwen Cheng, Desiree Gordian, Julie Lee, Sarah J. Paulsen, Stine N. Hansen, Kristoffer L. Egerod, Pernille Barkholt, Christopher J. Rhodes, Anna Secher, Lotte Bjerre Knudsen, Charles Pyke, Martin G. Myers, Tune H. Pers
Summary: The study indicates that DVC neuronal populations associated with obesity predisposition can suppress feeding, making them potential therapeutic targets for obesity treatment. By activating some of these neuronal populations, feeding in rodents can be decreased, highlighting their importance in regulating energy balance.
Article
Chemistry, Multidisciplinary
Christina Zovko, Frederic Kraetschmer, Sarah Schmidt, Tim P. Seifert, Michael T. Gamer, Peter W. Roesky
Summary: A bis(diphenyl)-phosphine functionalized ss-diketimine ligand (PNac-H) was utilized for the synthesis of a subvalent Ni(I) complex [PNac-Ni]. The stability of the Ni(I) center was achieved through tetradentate PNNP-type coordination, resulting in a square planar coordination sphere. The reductive potential of Ni(I) allowed the activation of various substrates, and the ligand's design enabled both stabilization of the reactive Ni(I) species and activation processes due to its hemilabile coordination behavior and accessible axial coordination sites. The activation products were characterized using multiple analytical techniques.
Article
Physiology
Xuesi M. Shao, Siyu Liu, Eon S. Lee, David Fung, Hua Pei, Jing Liang, Ross Mudgway, Jingxi Zhan, Jack L. Feldman, Yifang Zhu, Stan Louie, Xinmin S. Xie
JOURNAL OF APPLIED PHYSIOLOGY
(2018)
Article
Multidisciplinary Sciences
Clara Dussaux, Vivien Szabo, Yan Chastagnier, Jozsua Fodor, Jean-Francois Leger, Laurent Bourdieu, Julie Perroy, Cathie Ventalon
SCIENTIFIC REPORTS
(2018)
Article
Neurosciences
I-Wen Chen, Emiliano Ronzitti, Brian R. Lee, Tanya L. Daigle, Deniz Dalkara, Hongkui Zeng, Valentina Emiliani, Eirini Papagiakoumou
JOURNAL OF NEUROSCIENCE
(2019)
Article
Multidisciplinary Sciences
M. Pascucci, S. Ganesan, A. Tripathi, O. Katz, V Emiliani, M. Guillon
NATURE COMMUNICATIONS
(2019)
Article
Medicine, Research & Experimental
Takuo Hirose, Alfredo Cabrera-Socorro, David Chitayat, Thomas Lemonnier, Olivier Feraud, Carmen Cifuentes-Diaz, Nicolas Gervasi, Cedric Mombereau, Tanay Ghosh, Loredana Stoica, Jeanne d'Arc Al Bacha, Hiroshi Yamada, Marcel A. Lauterbach, Marc Guillon, Kiriko Kaneko, Joy W. Norris, Komudi Siriwardena, Susan Blaser, Jeremie Teillon, Roberto Mendoza-Londono, Marion Russeau, Julien Hadoux, Sadayoshi Ito, Pierre Corvol, Maria G. Matheus, Kenton R. Holden, Kohji Takei, Valentina Emiliani, Annelise Bennaceur-Griscelli, Charles E. Schwartz, Genevieve Nguyen, Matthias Groszer
JOURNAL OF CLINICAL INVESTIGATION
(2019)
Article
Multidisciplinary Sciences
Nicolo Accanto, I-Wen Chen, Emiliano Ronzitti, Clement Molinier, Christophe Tourain, Eirini Papagiakoumou, Valentina Emiliani
SCIENTIFIC REPORTS
(2019)
Article
Neurosciences
Sufyan Ashhad, Jack L. Feldman
Article
Biology
Xiaolu Sun, Carolina Thorn Perez, Nagaraj D. Halemani, Xuesi M. Shao, Morgan Greenwood, Sarah Heath, Jack L. Feldman, Kaiwen Kam
Review
Biochemical Research Methods
Eirini Papagiakoumou, Emiliano Ronzitti, Valentina Emiliani
Article
Anatomy & Morphology
Cindy F. Yang, Euiseok J. Kim, Edward M. Callaway, Jack L. Feldman
FRONTIERS IN NEUROANATOMY
(2020)
Review
Neurosciences
Tatum S. Simonson, Tracy L. Baker, Robert B. Banzett, Tammie Bishop, Jerome A. Dempsey, Jack L. Feldman, Patrice G. Guyenet, Emma J. Hodson, Gordon S. Mitchell, Esteban A. Moya, Brandon T. Nokes, Jeremy E. Orr, Robert L. Owens, Marc Poulin, Jean M. Rawling, Christopher N. Schmickl, Jyoti J. Watters, Magdy Younes, Atul Malhotra
Summary: The clinical presentation of COVID-19 can vary greatly, with some patients having mild symptoms while others develop respiratory failure. Some patients with COVID-19 are identified as having 'happy hypoxia', exhibiting no observable signs of respiratory distress despite feeling breathless. Further investigation is needed to understand the underlying respiratory and neurological components contributing to this variation.
JOURNAL OF PHYSIOLOGY-LONDON
(2021)
Review
Neurosciences
Helen Y. Weng, Jack L. Feldman, Lorenzo Leggio, Vitaly Napadow, Jeanie Park, Cynthia J. Price
Summary: The study explores the possibility of improving symptoms of disorders by manipulating interoceptive pathways, primarily through the respiratory system. Interventions such as neuromodulation, respiratory control, and mindfulness can alter interoception, enhancing interconnected physiological systems and improving overall functioning and behavior.
TRENDS IN NEUROSCIENCES
(2021)
Article
Critical Care Medicine
Jeremy E. Orr, Indu Ayappa, Danny J. Eckert, Jack L. Feldman, Chandra L. Jackson, Shahrokh Javaheri, Rami N. Khayat, Jennifer L. Martin, Reena Mehra, Matthew T. Naughton, Winfried J. Randerath, Scott A. Sands, Virend K. Somers, M. Safwan Badr
Summary: The international multidisciplinary group identified 11 specific research priorities regarding central sleep apnea (CSA) in heart failure patients, focusing on areas such as control of breathing, variability across individuals, examination techniques, treatment impact, and implementation strategies. Advancing care for patients with CSA in the context of heart failure will require progress in translational, epidemiological, and patient-centered outcome research. Priority should be given to targeted research to improve knowledge of CSA pathogenesis and treatment, given the increasing prevalence of heart failure and its substantial burden.
AMERICAN JOURNAL OF RESPIRATORY AND CRITICAL CARE MEDICINE
(2021)
Article
Neurosciences
Raquel P. Sousa Abreu, Evgeny Bondarenko, Jack L. Feldman
Summary: The study revealed that preBotC SST+ neurons, which modulate respiratory pattern but are not rhythmogenic, have different effects on breathing variables based on phase and state. Photostimulation of these neurons during inspiration in anaesthetized mice increased inspiratory duration and amplitude, with more pronounced effects at higher breathing frequencies. Also, unexpected phase- and state-dependent responses to photostimulation were observed, challenging current models of preBotC function.
JOURNAL OF PHYSIOLOGY-LONDON
(2022)
Review
Neurosciences
Sufyan Ashhad, Kaiwen Kam, Christopher A. Del Negro, Jack L. Feldman
Summary: Breathing is a vital behavior that has a broad influence on the brain and body. Recent advances in understanding the neural control system of breathing, called the breathing central pattern generator (bCPG), have revealed its complexity and its connections to emotions and cognition. These findings bring great potential for further research on the function and dysfunction of breathing and other neural circuits in mammals.
ANNUAL REVIEW OF NEUROSCIENCE
(2022)