Article
Multidisciplinary Sciences
Youtong Huang, Greg Lemke
Summary: Recurrent seizures, which may contribute to the pathogenesis and cognitive decline of Alzheimer's disease, are common in early-stage AD and mouse models that overproduce amyloid beta. In a study of the APP/PS1 mouse model, it was found that the mutation of TAM receptor tyrosine kinase (RTK) Mer or its ligand Gas6 significantly increased the risk of early death, which was tied to violent seizures originating in the dentate gyrus of the hippocampus. TAM-deficient mice showed increased newborn DG neurons and excitatory synapses, coinciding with premature death and adult neurogenesis. In contrast, the incidence of lethal seizures was strongly anticorrelated with the deposition of dense-core amyloid plaques. These findings suggest that TAM-mediated phagocytosis influences synaptic connectivity in the hippocampus and that seizure-inducing amyloid beta polymers are present before the formation of dense-core plaques.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Nutrition & Dietetics
Marta Portero-Tresserra, Neus Galofre-Lopez, Elisabet Pallares, Claudia Gimenez-Montes, Carlos Barcia, Roser Granero, Divka Rojic-Becker, Anna Vale-Martinez, Margarita Marti-Nicolovius, Gemma Guillazo-Blanch
Summary: Age-related changes in the brain significantly impact hippocampal structure and function, leading to cognitive impairments such as deteriorating spatial object recognition (SOR) memory. Both intrinsic factors like neuroinflammation and lifestyle factors like diet can influence aging-related brain function and cognitive performance. This study aimed to evaluate the effects of caloric restriction (CR) on SOR memory, hippocampal neuron loss, neurogenesis, and inflammation in aged male rats. The results showed that CR attenuated the decline in SOR memory, hippocampal neuron loss, and microglial activation associated with aging, while also reducing neurogenesis in the dentate gyrus.
Article
Immunology
Isabel M. Alonso Bellido, Mercedes Posada-Perez, Francisco Hernandez-Rasco, Sandra Vazquez-Reyes, Maria Cabanillas, Antonio J. Herrera, Sara Bachiller, Jesus Soldan-Hidalgo, Ana M. Espinosa-Oliva, Bertrand Joseph, Rocio M. de Pablos, Jose L. Venero, Rocio Ruiz
Summary: The study aims to investigate the role of Caspase-3 in neurogenesis-related microglial functions. Using Caspase-3 conditional knockout mice, it was found that the reduction of Caspase-3 led to decreased microglia and neurogenic neurons in the hippocampus, as well as a lower phagocytic capacity of microglia. Behavioral analysis also showed impaired memory and learning in the absence of Caspase-3. These findings highlight the essential role of Caspase-3 in microglial function and the importance of a specific microglial phenotype in the maintenance of adult hippocampal neurogenesis.
BRAIN BEHAVIOR AND IMMUNITY
(2023)
Article
Neurosciences
Ignacio Jure, Eugenia Falomir Lockhart, Alejandro F. De Nicola, Maria Jose Bellini, Florencia Labombarda
Summary: The hippocampus plays a crucial role in memory and learning processes, and its neurogenesis is influenced by glial cells and microenvironment. Spinal cord injury in rodents leads to hippocampal neuroinflammation, neurogenesis reduction, and cognitive impairments. Gene therapy with RAd-IGF1 shows potential in reversing hippocampal alterations and cognitive deficits caused by chronic SCI.
MOLECULAR NEUROBIOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Maria J. Pinto, Lea Cottin, Florent Dingli, Victor Laigle, Luis F. Ribeiro, Antoine Triller, Fiona Henderson, Damarys Loew, Veronique Fabre, Alain Bessis
Summary: Sleep intensity is regulated by previous awake time and microglia release TNF alpha to control sleep homeostasis.
Article
Neurosciences
Ryosuke Kamei, Shigeo Okabe
Summary: The efficient removal of cell corpses by ramified microglia in the hippocampal dentate gyrus involves frequent surveillance and rapid engulfment of dead cells, as well as simultaneous removal of multiple dead cells by different processes of a single microglial cell.
Article
Biochemistry & Molecular Biology
Mitsuki Umino, Mayumi Okuda, Takeshi Ohkubo, Tsutomu Fujii, Kiminori Matsubara
Summary: In this study, we evaluated the effects of long-term glycerophosphocholine (GPC) intake on microglia, the blood-brain barrier (BBB), and neurogenesis in senescence-accelerated mice prone 8 (SAMP8). The results showed that GPC intake suppressed microglial activation, protected BBB integrity, and sustained neurogenesis in the hippocampus of aged mice.
BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY
(2023)
Article
Immunology
Paula Sanchez-Molina, Beatriz Almolda, Lydia Gimenez-Llort, Berta Gonzalez, Bernardo Castellano
Summary: This study found that chronic overexpression of IL-10 by astrocytes can lead to a decrease in hippocampal neurogenesis and impair hippocampal-dependent spatial learning and memory processes. The changes in microglial cells are similar to those observed in normal aging.
BRAIN BEHAVIOR AND IMMUNITY
(2022)
Article
Immunology
Miranda M. Standiford, Ethan M. Grund, Charles L. Howe
Summary: This study revealed that citrullinated myelin induces a unique microglial response with increased production of tumor necrosis factor alpha (TNF alpha). Injection of citrullinated myelin inhibits spontaneous remyelination significantly, while neutralization of TNF alpha restores remyelination to normal levels.
JOURNAL OF NEUROINFLAMMATION
(2021)
Article
Environmental Sciences
Huanhuan Wang, Yao Chen, Xudan Liu, Ruo Zhang, Xiaotong Wang, Qianhui Zhang, Yuting Wei, Fang Fang, Ye Yuan, Qianqian Zhou, Yinqiao Dong, Sainan Shi, Xiaojing Jiang, Xin Li
Summary: This study investigated the mechanisms of microglia activation and TNF-alpha production induced by arsenic in the nervous system. It was found that microglia-derived TNF-alpha induced necroptosis in neuronal cells, suggesting its role in arsenic-related neurotoxicity.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2022)
Article
Biochemistry & Molecular Biology
Hyun Jung Kwon, Kyu Ri Hahn, Sung Min Nam, Yeo Sung Yoon, Seung Myung Moon, In Koo Hwang, Dae Won Kim
Summary: Purpurin has potent anti-oxidant and anti-inflammatory effects in brain damage. This study shows that purpurin can ameliorate the aging phenotypes induced by D-galactose and improve memory impairment in mice.
NEUROCHEMISTRY INTERNATIONAL
(2023)
Article
Neurosciences
Philip A. Feinberg, Shannon C. Becker, Leeyup Chung, Loris Ferrari, David Stellwagen, Christelle Anaclet, Violeta Duran-Laforet, Travis E. Faust, Rachita K. Sumbria, Dorothy P. Schafer
Summary: IRF8 is a transcription factor that plays a crucial role in the development and function of microglia and other immune cells. This study shows that the loss of IRF8 leads to dysregulated expression of genes involved in neural activity regulation and increased neural excitability, resulting in a higher susceptibility to lethal seizures in mice. Furthermore, the elevated TNF-a specifically in microglia in the central nervous system is identified, and blocking TNF-a rescues the seizure phenotype in IRF8-deficient mice.
JOURNAL OF NEUROSCIENCE
(2022)
Review
Immunology
Shaoyi Fang, Zhibin Wu, Yali Guo, Wenjun Zhu, Chunmiao Wan, Naijun Yuan, Jianbei Chen, Wenzhi Hao, Xiaowei Mo, Xiaofang Guo, Lili Fan, Xiaojuan Li, Jiaxu Chen
Summary: This review explores the roles of adult hippocampal neurogenesis and microglia in the etiology of depression, and discusses the mechanisms by which microglia regulate adult hippocampal neurogenesis in depression and potential drugs for improving neurogenesis.
FRONTIERS IN IMMUNOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Timea Teglas, Emoke Mihok, Zoltan Cziaky, Neli-Kinga Olah, Csaba Nyakas, Endre Mathe
Summary: Many plant-derived flavonoids found in black currant have anti-neuroinflammatory and anti-neurodegenerative effects. A standardized black currant gemmotherapy extract (BC-GTE) made from fresh buds contains approximately 133 phytonutrients, including significant flavonoids such as luteolin, quercetin, apigenin, and kaempferol. Experimental results suggest that BC-GTE possesses anti-neuroinflammatory/neuroprotective properties and has the potential to be used as a complementary therapeutic approach.
Article
Biochemistry & Molecular Biology
Ruhul Amin, Cristina Quispe, Anca Oana Docea, Alibek Ydyrys, Marzhan Kulbayevae, Sevgi Durna Dastan, Daniela Calina, Javad Sharifi-Rad
Summary: Parkinson's disease is a progressive neurodegenerative disorder associated with neuroinflammatory responses that lead to the neurodegeneration of the dopaminergic neurons. Research has revealed that Tumor Necrosis Factor alpha has a dual role in the brain, acting as both neuroprotective and neurotoxic, with its effective pathways involving various signaling pathways.
NEUROCHEMISTRY INTERNATIONAL
(2022)
Article
Critical Care Medicine
Ferenc Greksa, Edina Butt, Endre Csonka, Peter Javor, Eszter Tuboly, Laszlo Torok, Andrea Szabo, Endre Varga, Petra Hartmann
Summary: The study demonstrated significantly lower blood flow in the tibial periosteal region of the re-operated limb compared to the contralateral side, indicating inadequate local perfusion. Blood flow values were even lower in the endosteal region, which is crucial for treating fracture non-unions.
INJURY-INTERNATIONAL JOURNAL OF THE CARE OF THE INJURED
(2021)
Review
Biochemistry & Molecular Biology
Tamara Horvath, David Kurszan Jasz, Balint Barath, Marietta Zita Poles, Mihaly Boros, Petra Hartmann
Summary: This study summarized the effects of various preservation methods on mitochondrial function in preclinical models of liver transplantation (LT), indicating that hypothermic and subnormothermic machine perfusion have protective effects on mitochondria of donor organs, while shorter storage time at lower temperatures in static cold storage yields better results in terms of ATP preservation and respiratory capacity of complexes. Additional clinical studies are needed to confirm these findings in human patients.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Cardiac & Cardiovascular Systems
Kalman Benke, David Kurszan Jasz, Agnes Lilla Szilagyi, Balint Barath, Eszter Tuboly, Anett Roxana Marton, Petra Varga, Arpad Mohacsi, Anna Szabo, Zsofia Szell, Mihaly Ruppert, Tamas Radovits, Gabor Szabo, Bela Merkely, Petra Hartmann, Mihaly Boros
Summary: Adding methane during cold storage of organs for transplantation has been shown to improve early graft function, reduce mitochondrial dysfunction and inflammation, as well as lower myocardial damage and proapoptotic signaling caused by heart transplantation.
JOURNAL OF HEART AND LUNG TRANSPLANTATION
(2021)
Article
Biochemistry & Molecular Biology
Karolina Dulka, Melinda Szabo, Noemi Lajko, Istvan Belecz, Zsofia Hoyk, Karoly Gulya
Summary: The study found that prenatal treatment with RST in pregnant rats can induce epigenetic changes in the brains of newborn rats, especially affecting neuronal differentiation and development.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Review
Immunology
Linda Francistiova, Adrian Klepe, Geza Curley, Karoly Gulya, Andras Dinnyes, Kata Filkor
Summary: COVID-19 emerged in December 2019 and quickly became a global pandemic, with over 170 million people infected by June 2021. In addition to respiratory symptoms, concerns have been raised about the virus's potential neurological effects, including possible brain infiltration, immune reactions, and hypoxia-related neural damage. Intensive research is ongoing to understand the interplay of SARS-CoV-2 on the lung and brain, particularly the role of microglia in neurological manifestations during the disease.
FRONTIERS IN IMMUNOLOGY
(2021)
Article
Surgery
Peter Javor, Ferenc Rarosi, Tamara Horvath, Laszlo Torok, Petra Hartmann
Summary: This study aims to analyze the mitochondrial dysfunction in hemorrhaging trauma patients, evaluate the association between mitochondrial respiratory function and hemostasis, and explore the role of mitochondrial function in traumatic brain injury. The findings may reveal new therapeutic targets for hemostasis and reduce preventable mortality.
EUROPEAN SURGICAL RESEARCH
(2023)
Article
Biochemistry & Molecular Biology
Melinda Szabo, Noemi Lajko, Karolina Dulka, Istvan Szatmari, Ferenc Fueloep, Andras Mihaly, Laszlo Vecsei, Karoly Gulya
Summary: KYNA and its analog SZR104 are able to regulate anti-inflammatory processes in the brain by affecting the intracellular distribution and methylation patterns of histone H3 in microglia. The study found that KYNA and SZR104 decreased levels of inflammatory markers and inhibited the cytoplasmic translocation of H3K9me3, thereby reducing inflammatory damage.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Biochemistry & Molecular Biology
Balint Barath, David K. Jasz, Tamara Horvath, Bence Barath, Gergely Maroti, Gerda Strifler, Gabriella Varga, Lilla Sandor, Domonkos Perenyi, Szabolcs Tallosy, Tibor Donka, Peter Javor, Mihaly Boros, Petra Hartmann
Summary: This study found that antibiotics such as ceftriaxone and rifaximin, despite being clinically effective, can cause mitochondrial dysfunction and have negative effects on the intestinal mucosa. They also alter the composition and diversity of the gut microbiome, although they do not increase the abundance of toxin-producing species.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Review
Surgery
Judit Lantos, Tibor Nemeth, Zsanett Barta, Zsolt Szabo, Dora Paroczai, Endre Varga, Petra Hartmann
Summary: This article reviews the potential of non-intubated thoracic surgery (NITS) in reducing the negative effects of mechanical one-lung ventilation (mOLV), including lower inflammatory response, better oxygenation, and improved cardiac output.
FRONTIERS IN SURGERY
(2022)
Article
Rehabilitation
Laszlo Torok, Peter Javor, Katalin Torok, Ferenc Rarosi, Petra Hartmann
Summary: This study compares the outcomes of a 6-month accelerated rehabilitation with a 12-month rehabilitation. The results suggest that accelerated rehabilitation increases the risk of graft elongation and may require re-evaluation of the rehabilitation time frame.
ANNALS OF REHABILITATION MEDICINE-ARM
(2022)
Article
Biochemistry & Molecular Biology
Peter Javor, Attila Macsai, Edina Butt, Balint Barath, David Kurszan Jasz, Tamara Horvath, Bence Barath, Akos Csonka, Laszlo Torok, Endre Varga, Petra Hartmann
Summary: This study found that mitochondrial dysfunction is present in both osteoarthritis (OA) and rheumatoid arthritis (RA), but to different extents. Rheumatoid arthritis patients exhibited decreased complex I-linked respiration and mitochondrial uncoupling, while both arthritis groups showed reduced OxPhos activity compared to the control group. It is recommended to focus on respiratory complex I in rheumatoid arthritis research.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Medicine, General & Internal
Peter Javor, Lilla Hanak, Peter Hegyi, Endre Csonka, Edina Butt, Tamara Horvath, Istvan Gog, Anita Lukacs, Alexandra Soos, Zoltan Rumbus, Eszter Pakai, Janos Toldi, Petra Hartmann
Summary: This systematic review examines the role of heart rate in the initial hemodynamic assessment of trauma patients and finds no linear association between heart rate and mortality.
Article
Biochemistry & Molecular Biology
Tamara Horvath, Lilla Sandor, Balint Barath, Tibor Donka, Bence Barath, Arpad Mohacsi, Kurszan David Jasz, Petra Hartmann, Mihaly Boros
Summary: In a preclinical rat model of liver transplantation, liver grafts stored in methane-enriched HTK solution showed increased oxygen and glucose consumption, decreased hepatocellular damage, preserved mitochondrial oxidative phosphorylation capacity and enhanced extramitochondrial calcium ion movement compared to grafts stored in regular HTK solution.
Review
Medicine, General & Internal
Peter Javor, Tibor Donka, Tamara Horvath, Lilla Sandor, Laszlo Torok, Andrea Szabo, Petra Hartmann
Summary: The prevention of bleeding-related mortality is crucial in trauma patients. Various diagnostic methods for monitoring mesenteric perfusion (MP) have been critically analyzed in this review. Breath analysis, particularly exhaled methane (CH4) measurement, shows promise as a non-invasive and continuous monitoring option for blood loss.
JOURNAL OF CLINICAL MEDICINE
(2023)
Article
Medicine, General & Internal
Peter Javor, Ferenc Rarosi, Tamara Horvath, Laszlo Torok, Endre Varga, Petra Hartmann
Summary: This study aims to detect the occurrence of bleeding in severely injured patients by monitoring the methane concentration in exhaled air. The study will include 111 severely injured patients and measure the volume of blood loss using CT scans. The results will be compared with conventional shock markers and microcirculatory indices.