Article
Neurosciences
Yi Cheng, Nan Song, Renkai Ge, Yue Dai
Summary: In this study, the biophysical and modulatory properties of persistent inward currents (PICs) in serotonergic neurons in the medulla were investigated using patch-clamp technique. The study revealed that different components of PICs contribute to the upregulation of excitability in these neurons, and serotonin enhances this effect, leading to facilitated repetitive firing in serotonergic neurons. The findings shed light on the channel mechanisms responsible for serotonergic modulation of serotonergic neurons in the brainstem.
FRONTIERS IN NEURAL CIRCUITS
(2021)
Article
Neurosciences
Ao Li, Rui Li, Pengrong Ouyang, Huihui Li, Sa Wang, Xinxin Zhang, Dan Wang, Mingzi Ran, Guangchao Zhao, Qianzi Yang, Zhenghua Zhu, Hailong Dong, Haopeng Zhang
Summary: The dorsal raphe nucleus serotonergic neurons play a regulatory role in general anesthesia, as activation can facilitate emergence from anesthesia partly through 5-HT 1A and 2C receptors. By assessing neuronal activities, researchers found that Fos expression and calcium activity are significantly decreased during general anesthesia.
CNS NEUROSCIENCE & THERAPEUTICS
(2021)
Article
Endocrinology & Metabolism
Iltan Aklan, Nilufer Sayar-Atasoy, Fei Deng, Hyojin Kim, Yavuz Yavuz, Jacob Rysted, Connor Laule, Debbie Davis, Yulong Li, Deniz Atasoy
Summary: This study investigated the role of downstream neural circuits of serotonergic neurons in regulating feeding in rats. Using optogenetics and other methods, the researchers found that these circuits interact with satiety hormones, revealing the regulatory mechanisms of these hormones.
MOLECULAR METABOLISM
(2023)
Article
Engineering, Biomedical
James A. Beauchamp, Gregory E. P. Pearcey, Obaid U. Khurram, Matthieu Chardon, Y. Curtis Wang, Randall K. Powers, Julius P. A. Dewald, C. J. Heckman
Summary: This study presents a novel geometric approach to estimate the contribution of neuromodulatory and inhibitory inputs to motor unit (MU) discharge. By exploiting the discharge nonlinearities introduced by persistent inward currents (PIC) amplification, we quantify the deviation from linear discharge (brace height) and the rate of change in discharge (acceleration slope, attenuation slope, angle). These metrics provide intuitive methods for assessing neuromodulatory and inhibitory drive to individual MUs.
JOURNAL OF NEURAL ENGINEERING
(2023)
Review
Neurosciences
Marissa C. Ciesla, Yasin B. Seven, Latoya L. Allen, Kristin N. Smith, Zachary A. Asa, Alec K. Simon, Ashley E. Holland, Juliet Santiago, Kelsey Stefan, Ashley Ross, Elisa J. Gonzalez-Rothi, Gordon S. Mitchell
Summary: The study found that there is substantial serotonergic reinnervation following cervical spinal cord injury, but intermittent hypoxia does not affect the extent of reinnervation.
EXPERIMENTAL NEUROLOGY
(2021)
Article
Multidisciplinary Sciences
Sen Li, Ikuo Otsuka, Takaki Tanifuji, Satoshi Okazaki, Tadasu Horai, Motonori Takahashi, Takeshi Kondo, Yasuhiro Ueno, Akitoyo Hishimoto
Summary: Previous evidence has shown increased ribosomal DNA (rDNA) content in the blood of patients with schizophrenia (SCZ) among European populations. This study investigated rDNA copy number (rDNAcn) of SCZ in East Asian populations, as well as in blood and brain tissues. The results showed that patients with SCZ had significantly increased rDNAcn in both blood and brain tissues compared to controls. These findings replicate previous observations in Europeans and provide new insights into the molecular mechanisms underlying SCZ pathophysiology.
Article
Neurosciences
Ke Chen, Yue Dai
Summary: This study investigated the adaptability of lamina X neurons in mice after 3-week treadmill exercise and found that exercise enhanced excitability by increasing persistent inward currents and dendritic length. These findings provide insight into the cellular and channel mechanisms underlying the adaptation of the spinal motor system to exercise.
JOURNAL OF PHYSIOLOGY-LONDON
(2022)
Article
Neurosciences
Tomonobu Kato, Yasue Mitsukura, Keitaro Yoshida, Masaru Mimura, Norio Takata, Kenji F. Tanaka
Summary: Dorsal raphe (DR) 5-HT neurons play a crucial role in regulating sleep-wake transitions. The activity of these neurons fluctuates during the sleep-wake cycle, with slow oscillatory signals during non-rapid eye movement (NREM) sleep and cessation during rapid eye movement (REM) sleep. The oscillatory activity of DR 5-HT neurons is associated with EEG power fluctuation, and optogenetic manipulation of these neurons can induce or prolong specific sleep states.
JOURNAL OF NEUROSCIENCE
(2022)
Article
Immunology
Kanza M. Khan, Gabrielle Bierlein-De La Rosa, Natalie Biggerstaff, Govindhasamy Pushpavathi Selvakumar, Ruixiang Wang, Suzanne Mason, Michael E. Dailey, Catherine A. Marcinkiewcz
Summary: Adolescent alcohol use can permanently alter brain function and lead to poor health outcomes in adulthood. Emerging evidence suggests that alcohol use can predispose individuals to pain disorders or exacerbate existing pain conditions, but the underlying neural mechanisms are currently unknown.
BRAIN BEHAVIOR AND IMMUNITY
(2023)
Article
Neurosciences
Heming Cheng, Yingbei Qi, Nanxi Lai, Lin Yang, Cenglin Xu, Shuang Wang, Yi Guo, Zhong Chen, Yi Wang
Summary: Inhibition of hyperactivity of DR 5-HTergic neuron may present promising anti-seizure effect, and DR may be a potential DBS target for the therapy of TLE.
CNS NEUROSCIENCE & THERAPEUTICS
(2021)
Article
Neurosciences
Qiying Ye, Xiaobing Zhang
Summary: The study reveals that 5-HT regulates PVT neurons through direct excitation and indirect disinhibition, playing a role in controlling feeding behaviors. Chronic high-fat diet impairs the regulatory effect of 5-HT, potentially contributing to overeating and obesity.
JOURNAL OF PHYSIOLOGY-LONDON
(2021)
Article
Neurosciences
Rika Moriya, Mitsuko Kanamaru, Naoki Okuma, Akira Yoshikawa, Kenji F. Tanaka, Satoshi Hokari, Yasuyoshi Ohshima, Akihiro Yamanaka, Motoyasu Honma, Hiroshi Onimaru, Toshiaki Kikuchi, Masahiko Izumizaki
Summary: Studies have shown that 5-HT neurons in the DRN play a crucial role in regulating different waking states, with optogenetic activation of these neurons causing rapid transition from non-REM sleep to active wakefulness. Activation of medullary 5-HT neurons, on the other hand, does not seem to affect sleep/wake states or locomotor activity. Further research into the cortical functional connectivity involved in sleep/wake state regulation is encouraged based on these findings.
BRAIN RESEARCH BULLETIN
(2021)
Review
Biology
Zachary A. Grieb, Joseph S. Lonstein
Summary: The interaction between oxytocin and central dopamine and serotonin systems is crucial for behavioral adaptations during the postpartum period. Oxytocin-dopamine interaction regulates maternal motivation and active caregiving behaviors, while oxytocin-serotonin interaction influences other aspects such as nursing, aggression, anxiety-like behavior, and stress coping strategy.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2022)
Article
Neurosciences
Jacqueline K. Khamma, Daniel S. Copeland, Holly S. Hake, Stephanie C. Gantz
Summary: The activity of dorsal raphe neurons is controlled by noradrenaline afferents, which activate α1-adrenergic receptors to produce EPSC. The amplitude of the EPSC is influenced by the amount of noradrenaline released, while the decay time is not affected. The termination of EPSC is primarily mediated by reuptake via transporters.
JOURNAL OF NEUROSCIENCE
(2022)
Article
Biochemistry & Molecular Biology
Nima Khalighinejad, Sanjay Manohar, Masud Husain, Matthew F. S. Rushworth
Summary: Decision-making involves choosing actions, as well as determining when and whether to initiate them. Different brain regions, such as DRN, BF, and ACC, contribute to different stages of decision-making, with 5-HT and ACh playing complementary roles.
Article
Neurosciences
Yue Dai, Yi Cheng, Brent Fedirchuk, Larry M. Jordan, Junhao Chu
JOURNAL OF NEUROPHYSIOLOGY
(2018)
Article
Neurosciences
Ke Chen, Renkai Ge, Yi Cheng, Yue Dai
EXPERIMENTAL BRAIN RESEARCH
(2019)
Article
Neurosciences
Yi Cheng, Qiang Zhang, Yue Dai
JOURNAL OF NEUROPHYSIOLOGY
(2020)
Article
Neurosciences
Renkai Ge, Ke Chen, Yi Cheng, Yue Dai
EXPERIMENTAL BRAIN RESEARCH
(2019)
Article
Mathematical & Computational Biology
Qiang Zhang, Yue Dai
JOURNAL OF COMPUTATIONAL NEUROSCIENCE
(2020)
Correction
Mathematical & Computational Biology
Qiang Zhang, Yue Dai
Summary: The authors discovered several printing errors in the equations in the final versions online and in print proof, but there were no such errors in the submitted proof.
JOURNAL OF COMPUTATIONAL NEUROSCIENCE
(2021)
Article
Neurosciences
Yi Cheng, Nan Song, Renkai Ge, Yue Dai
Summary: In this study, the biophysical and modulatory properties of persistent inward currents (PICs) in serotonergic neurons in the medulla were investigated using patch-clamp technique. The study revealed that different components of PICs contribute to the upregulation of excitability in these neurons, and serotonin enhances this effect, leading to facilitated repetitive firing in serotonergic neurons. The findings shed light on the channel mechanisms responsible for serotonergic modulation of serotonergic neurons in the brainstem.
FRONTIERS IN NEURAL CIRCUITS
(2021)
Article
Neurosciences
Ke Chen, Xing Ge, Yue Dai
Summary: This study demonstrated that ACh potentiated PICs in 5-HT neurons of the brainstem by activating muscarinic M3 receptor.
EXPERIMENTAL BRAIN RESEARCH
(2022)
Article
Neurosciences
Ke Chen, Yue Dai
Summary: This study investigated the adaptability of lamina X neurons in mice after 3-week treadmill exercise and found that exercise enhanced excitability by increasing persistent inward currents and dendritic length. These findings provide insight into the cellular and channel mechanisms underlying the adaptation of the spinal motor system to exercise.
JOURNAL OF PHYSIOLOGY-LONDON
(2022)
Article
Neurosciences
Yi Cheng, Renkai Ge, Ke Chen, Yue Dai
JOURNAL OF INTEGRATIVE NEUROSCIENCE
(2019)