Review
Cell Biology
Stefan Dhein, Aida Salameh
Summary: The heart relies on gap junction channels to maintain cell-cell coupling for efficient and rapid electrical conduction. Connexin expression and gap junction localization play crucial roles in modulating cardiac electrical properties, ultimately affecting cardiac stability and function.
Review
Neurosciences
Jonathan Stephan, Sara Eitelmann, Min Zhou
Summary: Astrocytes and oligodendrocytes play key roles in ensuring ion and neurotransmitter homeostasis and facilitating fast action potential propagation in the brain. Research has shown that the glial networks exhibit heterogeneous connectivity in different brain regions, influencing electrical communication and intercellular ion spread. By using various methods to analyze gap junctional communication, researchers can gain insights into the cellular properties of glial cells and their impact on neuronal function.
FRONTIERS IN CELLULAR NEUROSCIENCE
(2021)
Article
Biochemistry & Molecular Biology
Azin EbrahimAmini, Bojana Stefanovic, Peter L. Carlen
Summary: This study investigates the effect of decreased intracellular ATP concentration on the extracellular potassium ion concentration. It found that reduction in ATP concentration leads to an increase in extracellular potassium ion concentration, possibly due to the impairment of the Na/K ATPase pump and ATP-sensitive potassium channel.
Article
Physiology
Shailesh Appukuttan, Keith L. Brain, Rohit Manchanda
Summary: Gap junctions provide pathways for intercellular communication between adjacent cells, influencing electrical activity propagation and oscillation frequency. The location of pacemaking cells and differences in gap junctional properties can alter the behavior of electrically coupled tissues, affecting the oscillation frequency.
FRONTIERS IN PHYSIOLOGY
(2021)
Article
Multidisciplinary Sciences
Weiwei Yu, Zhen Wang, Xiafei Yu, Yonghui Zhao, Zili Xie, Kailian Zhang, Zhexu Chi, Sheng Chen, Ting Xu, Danlu Jiang, Xingchen Guo, Mobai Li, Jian Zhang, Hui Fang, Dehang Yang, Yuxian Guo, Xuyan Yang, Xue Zhang, Yingliang Wu, Wei Yang, Di Wang
Summary: This study reveals that the Kir2.1 potassium channel regulates macrophage metabolism and inflammatory responses. The activity of this channel affects nutrient uptake and subsequent metabolic reprogramming, which promotes inflammation. Targeting Kir2.1 with drugs can alleviate inflammation triggered by infections. These findings advance our understanding of the role of membrane potential in immune function and provide potential therapeutic strategies for inflammatory diseases.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Wentong Du, Huarong Zeng, Weiwei Yang, Kunyu Zhao, Faqiang Zhang, Guorong Li, Yongxiang Li, Zhifu Liu
Summary: The local electric-field around multitype pores in multilayer ceramic capacitors was investigated through Kelvin probe force microscopy combined with finite element simulation. The study found that the electric-field is significantly concentrated near these pores, with a strength 1.5-5.0 times higher than the nominal strength. Surprisingly, the concentration of pores in the inner electrode is much higher than in the dielectrics and dielectric-electrode interfaces. Geometry orientations were also found to have a remarkable influence on the local electric field strength. These pores act as precursors for insulation degradation through local electric, thermal, and oxygen vacancy accumulation centers.
JOURNAL OF MATERIOMICS
(2023)
Article
Materials Science, Multidisciplinary
D. B. Karki, R. S. Whitney, D. M. Basko
Summary: We theoretically study a strongly disordered superconducting layer heated by near-field microwave radiation from a nanometric metallic tip. We propose using this as a local probe to access different physics, such as mapping out inhomogeneous superfluid flow in the layer.
Article
Chemistry, Multidisciplinary
Jian Yu, Dengyong Wang
Summary: Casing is crucial in aircraft engine and traditional mechanical methods are not suitable for processing due to its thin wall thickness and difficult-to-cut materials. Counter-rotating electrochemical machining (CRECM) is used for machining aircraft engine casing parts, however, it is sometimes challenging to achieve the desired accuracy for complex convex structures. In this paper, a local electrochemical machining method is proposed for after-machining of pre-shaped convex structures by CRECM. A multi-physical field coupling simulation model considering the influence of gas-liquid two-phase flow and temperature field is established to accurately predict the local electrochemical machining result and improve machining precision. The experimental results show that the multi-physical field coupling simulation can predict the results of local electrochemical machining with high accuracy and has significant importance for improving the precision of this machining technique.
APPLIED SCIENCES-BASEL
(2023)
Article
Soil Science
Shishu Yang, Yekun Zhang, Bo Feng, Hang Li
Summary: The intensity of soil loss in runoff is controlled by electrostatic repulsive forces among soil particles, which are influenced by cation surface reactions, electrolyte concentration, and soil particle size composition. The Hofmeister effect was found to play a critical role in this study. Increasing the soil's large particle content enhances soil loss intensity but does not necessarily increase soil loss quantity.
SOIL & TILLAGE RESEARCH
(2021)
Review
Pharmacology & Pharmacy
Yunmeng Zhang, Shangzhi Feng, Xin Cheng, Kecheng Lou, Xin Liu, Ming Zhuo, Li Chen, Junming Ye
Summary: The side effects of anesthetic drugs are a concern for anesthesiologists. Anesthetic adjuvants have been used to mitigate these side effects, but they themselves have potential adverse effects. Exosomes, which contain genetic information, may offer a safer and more effective alternative as local anesthetic adjuvants. This article summarizes the literature on local anesthetic adjuvants and explores the potential of exosomes in this field.
FRONTIERS IN PHARMACOLOGY
(2023)
Article
Multidisciplinary Sciences
Ning Wei, Elena G. Tolkacheva
Summary: The study revealed that ephaptic coupling and the complex geometry of the ischemic zone have opposite effects on reentry termination. While ephaptic coupling and homogeneous EpC can terminate reentry, the presence of complex geometry in the border zone facilitates reentry.
Article
Electrochemistry
Jin Tao, Jinkai Xu, Wanfei Ren, Zhenming Xu, Huadong Yu
Summary: In this work, a multi-physics field coupling model was developed to investigate the electric field, gas-liquid two-phase flow field, and temperature field in the forward flow electrochemical trepanning (FFECT) blades. The distribution of hydrogen bubble volume fraction, electrolyte temperature, and electrolyte conductivity in the machining gap was obtained. Simulation and experimental results demonstrated that the machining voltage and cathode feed rate significantly affected both the side gap and the end gap. The model predictions showed good agreement with the experimental results.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Zihui Geng, Lian Jin, Honglei Zhu, Jianfei Wang, Xiaomei Wu
Summary: Myocardial ischemia can lead to ventricular tachycardia and ventricular fibrillation. Simulation results indicate that susceptibility peaks at 12mM due to the effect of extracellular potassium on repolarization dispersion and effective refractory period. The study also analyzes reentrant patterns during non-transmural ischemia, providing insights for clinical ablation targets.
APPLIED SCIENCES-BASEL
(2021)
Article
Physics, Applied
Zhonghui Yu, Zhaoqiang Chu, Jikun Yang, Mohammad Javad Pourhosseini Asl, Zhanmiao Li, Shuxiang Dong
Summary: The study presents a NdFeB magnet/piezoelectric composite cantilever that enhances magneto-mechano-electric (MME) coupling under weak AC magnetic field excitation. Experimental results show the composite cantilever can produce high power output and current, able to drive LED lights even in weak magnetic fields, indicating potential in harvesting energy from stray magnetic fields.
APPLIED PHYSICS LETTERS
(2021)
Article
Social Sciences, Interdisciplinary
Rajko Tomas
Summary: This paper presents a method for measuring potential quality of life using the synthetic index of relative concentration (SIRC), which measures the impact on quality of life due to the unequal distribution of objective living conditions among community members. The practical application of SIRC in analyzing the potential quality of life in different municipalities shows promising results in categorization and ranking.
SOCIAL INDICATORS RESEARCH
(2022)
Review
Biochemistry & Molecular Biology
Paolo Bazzigaluppi, Azin Ebrahim Amini, Iliya Weisspapir, Bojana Stefanovic, Peter L. Carlen
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2017)
Article
Biochemistry & Molecular Biology
Paolo Bazzigaluppi, Tina L. Beckett, Margaret M. Koletar, Aaron Y. Lai, Illsung L. Joo, Mary E. Brown, Peter L. Carlen, JoAnne McLaurin, Bojana Stefanovic
JOURNAL OF NEUROCHEMISTRY
(2018)
Review
Neurosciences
Mark S. Aquilino, Paige Whyte-Fagundes, Georg Zoidl, Peter L. Carlen
NEUROSCIENCE LETTERS
(2019)
Article
Neurosciences
Michael Chang, Joshua A. Dian, Suzie Dufour, Lihua Wang, Homeira Moradi Chameh, Meera Ramani, Liang Zhang, Peter L. Carlen, Thilo Womelsdorf, Taufik A. Valiante
NEUROBIOLOGY OF DISEASE
(2018)
Article
Neurosciences
Paige Whyte-Fagundes, Stefan Kurtenbach, Christiane Zoidl, Valery I. Shestopalov, Peter L. Carlen, Georg Zoidl
FRONTIERS IN MOLECULAR NEUROSCIENCE
(2018)
Article
Neurosciences
Wanida Lertwittayanon, Orrin Devinsky, Peter L. Carlen
NEUROBIOLOGY OF DISEASE
(2020)
Article
Multidisciplinary Sciences
Homeira Moradi Chameh, Scott Rich, Lihua Wang, Fu-Der Chen, Liang Zhang, Peter L. Carlen, Shreejoy J. Tripathy, Taufik A. Valiante
Summary: The study reveals the diverse electrophysiological properties of human cortical pyramidal neurons, with L5 pyramidal cells being the most excitable and exhibiting the most prominent sag current. While subthreshold resonance is more common in L3c and L5, L5 neurons are uniquely adept at tracking both delta and theta frequency inputs. These biophysical properties may play a crucial role in the generation of cortical theta oscillations.
NATURE COMMUNICATIONS
(2021)
Review
Cell Biology
Ehud Banne, Baraa Abudiab, Sara Abu-Swai, Srinivasa Rao Repudi, Daniel J. Steinberg, Diala Shatleh, Sarah Alshammery, Leszek Lisowski, Wendy Gold, Peter L. Carlen, Rami I. Aqeilan
Summary: Mutations in the WWOX gene can lead to various neurological syndromes, including epileptic encephalopathy and global developmental delay. Differentiating pathogenic alleles is crucial for diagnosis and treatment.
Article
Biology
Paige Whyte-Fagundes, Daria Taskina, Nickie Safarian, Christiane Zoidl, Peter L. Carlen, Logan W. Donaldson, Georg R. Zoidl
Summary: The Panx1 channels have both pro- and anti-convulsant effects in a zebrafish model, shedding light on their role in seizure development. RNA-seq analysis showed distinct metabolic and cell signaling states associated with the loss of Panx1a. The activities of both Panx1 channels affect ATP release and involve the P2rx7 receptor.
COMMUNICATIONS BIOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Azin EbrahimAmini, Bojana Stefanovic, Peter L. Carlen
Summary: This study investigates the effect of decreased intracellular ATP concentration on the extracellular potassium ion concentration. It found that reduction in ATP concentration leads to an increase in extracellular potassium ion concentration, possibly due to the impairment of the Na/K ATPase pump and ATP-sensitive potassium channel.
Article
Cell Biology
Alexandra C. C. Santos, George Nader, Dana El Soufi El Sabbagh, Karolina Urban, Liliana Attisano, Peter L. L. Carlen
Summary: Human cerebral organoids resemble the complexity of the human brain and have the potential to improve drug development for neurological diseases. Epilepsy, a complex neurological condition characterized by recurrent seizures, requires better models for drug development. This study demonstrates the use of human cerebral organoids to model cerebral cortical hyperexcitability, which could contribute to drug discovery for epilepsy.
Article
Engineering, Biomedical
Mohammad Reza Pazhouhandeh, Amirali Amirsoleimani, Iliya Weisspapir, Peter Carlen, Roman Genov
Summary: This paper presents a low-power bidirectional 64-channel CMOS neural-ADC that is immune to artifacts such as those in the TIS techniques or conventional biphasic stimulation. The ADC is able to maintain high input impedance and recover quickly within 100 microseconds. In vivo recordings from anesthetized mice demonstrate the unique capabilities of the presented architecture in resolving local field potentials.
IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS
(2022)
Article
Clinical Neurology
Marjan Rafiee, Kramay Patel, David M. Groppe, Danielle M. Andrade, Eduard Bercovici, Esther Bui, Peter L. Carlen, Aylin Reid, Peter Tai, Donald Weaver, Richard Wennberg, Taufik A. Valiante
Article
Neurosciences
Vanessa Breton, Berj Bardakjian, Peter Carlen
Article
Neurosciences
Nihal A. Salem, Lawrence Manzano, Michael W. Keist, Olga Ponomareva, Amanda J. Roberts, Marisa Roberto, R. Dayne Mayfield
Summary: This study identified cell-type specific gene expression changes associated with alcohol dependence in the medial prefrontal cortex of mice. The results revealed dysregulated gene co-expression networks and differentially expressed genes in multiple cell types, highlighting the involvement of inhibitory neurons and astrocytes in alcohol dependence. Novel targets for studying molecular mechanisms contributing to alcohol dependence were also identified.
NEUROBIOLOGY OF DISEASE
(2024)
Article
Neurosciences
Laura E. Hawley, Megan Stringer, Abigail J. Deal, Andrew Folz, Charles R. Goodlett, Randall J. Roper
Summary: This study found that the overexpression of DYRK1A protein in Down syndrome mice varies with age, sex, and brain region, and reducing the copy number of Dyrk1a can decrease the expression of DYRK1A. These sex-specific patterns of DYRK1A overexpression may provide mechanistic targets for therapeutic intervention in Down syndrome.
NEUROBIOLOGY OF DISEASE
(2024)