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Wensveen FM, Šestan M, Polić B. The immunology of sickness metabolism. Cell Mol Immunol 2024; 21:1051-1065. [PMID: 39107476 PMCID: PMC11364700 DOI: 10.1038/s41423-024-01192-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Accepted: 05/29/2024] [Indexed: 09/01/2024] Open
Abstract
Everyone knows that an infection can make you feel sick. Although we perceive infection-induced changes in metabolism as a pathology, they are a part of a carefully regulated process that depends on tissue-specific interactions between the immune system and organs involved in the regulation of systemic homeostasis. Immune-mediated changes in homeostatic parameters lead to altered production and uptake of nutrients in circulation, which modifies the metabolic rate of key organs. This is what we experience as being sick. The purpose of sickness metabolism is to generate a metabolic environment in which the body is optimally able to fight infection while denying vital nutrients for the replication of pathogens. Sickness metabolism depends on tissue-specific immune cells, which mediate responses tailored to the nature and magnitude of the threat. As an infection increases in severity, so do the number and type of immune cells involved and the level to which organs are affected, which dictates the degree to which we feel sick. Interestingly, many alterations associated with metabolic disease appear to overlap with immune-mediated changes observed following infection. Targeting processes involving tissue-specific interactions between activated immune cells and metabolic organs therefore holds great potential for treating both people with severe infection and those with metabolic disease. In this review, we will discuss how the immune system communicates in situ with organs involved in the regulation of homeostasis and how this communication is impacted by infection.
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Affiliation(s)
| | - Marko Šestan
- University of Rijeka Faculty of Medicine, Rijeka, Croatia
| | - Bojan Polić
- University of Rijeka Faculty of Medicine, Rijeka, Croatia
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Mora VP, Kalergis AM, Bohmwald K. Neurological Impact of Respiratory Viruses: Insights into Glial Cell Responses in the Central Nervous System. Microorganisms 2024; 12:1713. [PMID: 39203555 PMCID: PMC11356956 DOI: 10.3390/microorganisms12081713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Revised: 05/30/2024] [Accepted: 06/01/2024] [Indexed: 09/03/2024] Open
Abstract
Respiratory viral infections pose a significant public health threat, particularly in children and older adults, with high mortality rates. Some of these pathogens are the human respiratory syncytial virus (hRSV), severe acute respiratory coronavirus-2 (SARS-CoV-2), influenza viruses (IV), human parvovirus B19 (B19V), and human bocavirus 1 (HBoV1). These viruses cause various respiratory symptoms, including cough, fever, bronchiolitis, and pneumonia. Notably, these viruses can also impact the central nervous system (CNS), leading to acute manifestations such as seizures, encephalopathies, encephalitis, neurological sequelae, and long-term complications. The precise mechanisms by which these viruses affect the CNS are not fully understood. Glial cells, specifically microglia and astrocytes within the CNS, play pivotal roles in maintaining brain homeostasis and regulating immune responses. Exploring how these cells interact with viral pathogens, such as hRSV, SARS-CoV-2, IVs, B19V, and HBoV1, offers crucial insights into the significant impact of respiratory viruses on the CNS. This review article examines hRSV, SARS-CoV-2, IV, B19V, and HBoV1 interactions with microglia and astrocytes, shedding light on potential neurological consequences.
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Affiliation(s)
- Valentina P. Mora
- Instituto de Ciencias Biomédicas, Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Santiago 8910060, Chile;
| | - Alexis M. Kalergis
- Millennium Institute on Immunology and Immunotherapy (MIII), Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago 8331150, Chile;
- Departamento de Endocrinología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago 8331150, Chile
| | - Karen Bohmwald
- Instituto de Ciencias Biomédicas, Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Santiago 8910060, Chile;
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Pollard KJ, Traina-Dorge V, Medearis SM, Bosak A, Bix GJ, Moore MJ, Piedimonte G. Respiratory Syncytial Virus Infects Peripheral and Spinal Nerves and Induces Chemokine-Mediated Neuropathy. J Infect Dis 2024; 230:467-479. [PMID: 38135285 PMCID: PMC11326824 DOI: 10.1093/infdis/jiad596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Revised: 12/14/2023] [Accepted: 12/20/2023] [Indexed: 12/24/2023] Open
Abstract
Respiratory syncytial virus (RSV) primarily infects the respiratory epithelium, but growing evidence suggests that it may also be responsible for neurologic sequelae. In 3-dimensional microphysiologic peripheral nerve cultures, RSV infected neurons, macrophages, and dendritic cells along 2 distinct trajectories depending on the initial viral load. Low-level infection was transient, primarily involved macrophages, and induced moderate chemokine release with transient neural hypersensitivity. Infection with higher viral loads was persistent, infected neuronal cells in addition to monocytes, and induced robust chemokine release followed by progressive neurotoxicity. In spinal cord cultures, RSV infected microglia and dendritic cells but not neurons, producing a moderate chemokine expression pattern. The persistence of infection was variable but could be identified in dendritic cells as long as 30 days postinoculation. This study suggests that RSV can disrupt neuronal function directly through infection of peripheral neurons and indirectly through infection of resident monocytes and that inflammatory chemokines likely mediate both mechanisms.
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Affiliation(s)
| | - Vicki Traina-Dorge
- Department of Microbiology and Immunology, School of Medicine, Tulane University, New Orleans
- Division of Microbiology, Tulane National Primate Research Center, Covington
| | - Stephen M Medearis
- Department of Pediatrics
- Department of Biochemistry and Molecular Biology
| | | | - Gregory J Bix
- Clinical Neuroscience Research Center
- Department of Neurosurgery
- Department of Neurology, School of Medicine
- Tulane Brain Institute, Tulane University
| | - Michael J Moore
- Department of Biomedical Engineering
- Tulane Brain Institute, Tulane University
- Axosim, Inc, New Orleans, Louisiana
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Jiang T, Zhu K, Kang G, Wu G, Wang L, Tan Y. Infectious viruses and neurodegenerative diseases: The mitochondrial defect hypothesis. Rev Med Virol 2024; 34:e2565. [PMID: 39031738 DOI: 10.1002/rmv.2565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2024] [Revised: 06/10/2024] [Accepted: 06/16/2024] [Indexed: 07/22/2024]
Abstract
Global attention is riveted on neurodegenerative diseases due to their unresolved aetiologies and lack of efficacious therapies. Two key factors implicated include mitochondrial impairment and microglial ageing. Several viral infections, including Herpes simplex virus-1 (HSV-1), human immunodeficiency virus (HIV) and Epstein-Barr virus, are linked to heightened risk of these disorders. Surprisingly, numerous studies indicate viruses induce these aforementioned precipitating events. Epstein-Barr virus, Hepatitis C Virus, HIV, respiratory syncytial virus, HSV-1, Japanese Encephalitis Virus, Zika virus and Enterovirus 71 specifically impact mitochondrial function, leading to mitochondrial malfunction. These vital organelles govern various cell activities and, under specific circumstances, trigger microglial ageing. This article explores the role of viral infections in elucidating the pathogenesis of neurodegenerative ailments. Various viruses instigate microglial ageing via mitochondrial destruction, causing senescent microglia to exhibit activated behaviour, thereby inducing neuroinflammation and contributing to neurodegeneration.
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Affiliation(s)
- Tianshi Jiang
- Department of Medical Microbiology, Central South University Changsha, Changsha, Hunan Province, China
| | - Kaili Zhu
- Department of Medical Microbiology, Central South University Changsha, Changsha, Hunan Province, China
| | - Guangli Kang
- Department of Medical Microbiology, Central South University Changsha, Changsha, Hunan Province, China
| | - Guojun Wu
- Department of Medical Microbiology, Central South University Changsha, Changsha, Hunan Province, China
| | - Lili Wang
- Department of Medical Microbiology, Central South University Changsha, Changsha, Hunan Province, China
| | - Yurong Tan
- Department of Medical Microbiology, Central South University Changsha, Changsha, Hunan Province, China
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Yan Y, Cho AN. Human Brain In Vitro Model for Pathogen Infection-Related Neurodegeneration Study. Int J Mol Sci 2024; 25:6522. [PMID: 38928228 PMCID: PMC11204318 DOI: 10.3390/ijms25126522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 05/21/2024] [Accepted: 06/10/2024] [Indexed: 06/28/2024] Open
Abstract
Recent advancements in stem cell biology and tissue engineering have revolutionized the field of neurodegeneration research by enabling the development of sophisticated in vitro human brain models. These models, including 2D monolayer cultures, 3D organoids, organ-on-chips, and bioengineered 3D tissue models, aim to recapitulate the cellular diversity, structural organization, and functional properties of the native human brain. This review highlights how these in vitro brain models have been used to investigate the effects of various pathogens, including viruses, bacteria, fungi, and parasites infection, particularly in the human brain cand their subsequent impacts on neurodegenerative diseases. Traditional studies have demonstrated the susceptibility of different 2D brain cell types to infection, elucidated the mechanisms underlying pathogen-induced neuroinflammation, and identified potential therapeutic targets. Therefore, current methodological improvement brought the technology of 3D models to overcome the challenges of 2D cells, such as the limited cellular diversity, incomplete microenvironment, and lack of morphological structures by highlighting the need for further technological advancements. This review underscored the significance of in vitro human brain cell from 2D monolayer to bioengineered 3D tissue model for elucidating the intricate dynamics for pathogen infection modeling. These in vitro human brain cell enabled researchers to unravel human specific mechanisms underlying various pathogen infections such as SARS-CoV-2 to alter blood-brain-barrier function and Toxoplasma gondii impacting neural cell morphology and its function. Ultimately, these in vitro human brain models hold promise as personalized platforms for development of drug compound, gene therapy, and vaccine. Overall, we discussed the recent progress in in vitro human brain models, their applications in studying pathogen infection-related neurodegeneration, and future directions.
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Affiliation(s)
- Yuwei Yan
- School of Biomedical Engineering, Faculty of Engineering, The University of Sydney, Darlington, NSW 2008, Australia;
- The University of Sydney Nano Institute (Sydney Nano), The University of Sydney, Camperdown, NSW 2050, Australia
| | - Ann-Na Cho
- School of Biomedical Engineering, Faculty of Engineering, The University of Sydney, Darlington, NSW 2008, Australia;
- The University of Sydney Nano Institute (Sydney Nano), The University of Sydney, Camperdown, NSW 2050, Australia
- Charles Perkins Centre, The University of Sydney, Camperdown, NSW 2006, Australia
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Zhang X, Song Y, Gong H, Wu C, Wang B, Chen W, Hu J, Xiang H, Zhang K, Sun M. Neurotoxicity of Titanium Dioxide Nanoparticles: A Comprehensive Review. Int J Nanomedicine 2023; 18:7183-7204. [PMID: 38076727 PMCID: PMC10710240 DOI: 10.2147/ijn.s442801] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Accepted: 11/25/2023] [Indexed: 12/18/2023] Open
Abstract
The increasing use of titanium dioxide nanoparticles (TiO2 NPs) across various fields has led to a growing concern regarding their environmental contamination and inevitable human exposure. Consequently, significant research efforts have been directed toward understanding the effects of TiO2 NPs on both humans and the environment. Notably, TiO2 NPs exposure has been associated with multiple impairments of the nervous system. This review aims to provide an overview of the documented neurotoxic effects of TiO2 NPs in different species and in vitro models. Following exposure, TiO2 NPs can reach the brain, although the specific mechanism and quantity of particles that cross the blood-brain barrier (BBB) remain unclear. Exposure to TiO2 NPs has been shown to induce oxidative stress, promote neuroinflammation, disrupt brain biochemistry, and ultimately impair neuronal function and structure. Subsequent neuronal damage may contribute to various behavioral disorders and play a significant role in the onset and progression of neurodevelopmental or neurodegenerative diseases. Moreover, the neurotoxic potential of TiO2 NPs can be influenced by various factors, including exposure characteristics and the physicochemical properties of the TiO2 NPs. However, a systematic comparison of the neurotoxic effects of TiO2 NPs with different characteristics under various exposure conditions is still lacking. Additionally, our understanding of the underlying neurotoxic mechanisms exerted by TiO2 NPs remains incomplete and fragmented. Given these knowledge gaps, it is imperative to further investigate the neurotoxic hazards and risks associated with exposure to TiO2 NPs.
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Affiliation(s)
- Xing Zhang
- Department of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
| | - Yuanyuan Song
- Department of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
| | - Hongyang Gong
- Department of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
| | - Chunyan Wu
- Department of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
| | - Binquan Wang
- Department of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
| | - Wenxuan Chen
- The Second Clinical Medical School, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
| | - Jiawei Hu
- The Second Clinical Medical School, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
| | - Hanhui Xiang
- The Second Clinical Medical School, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
| | - Ke Zhang
- Department of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
| | - Mingkuan Sun
- Department of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
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Liang Y, Liu M, Wang Y, Liu L, Gao Y. Analyzing the Material Basis of Anti-RSV Efficacy of Lonicerae japonicae Flos Based on the PK-PD Model. Molecules 2023; 28:6437. [PMID: 37764214 PMCID: PMC10537356 DOI: 10.3390/molecules28186437] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 08/16/2023] [Accepted: 08/28/2023] [Indexed: 09/29/2023] Open
Abstract
Lonicerae japonicae Flos (LJF) possesses a good anti-respiratory syncytial virus (RSV) effect. However, the material basis of LJF in treating RSV is still unclear. In this study, a sensitive and accurate quantitative method based on UHPLC-QQQ MS was established and validated for the simultaneous determination of the 15 ingredients from LJF in RSV-infected mice plasma. Multiple reaction monitoring was performed for quantification of the standards and of the internal standard in plasma. All the calibration curves show good linear regression within the linear range (r2 > 0.9918). The method validation results, including specificity, linearity, accuracy, precision, extraction recovery, matrix effect, and stability of 15 ingredients, are all within the current acceptance criteria. This established method was successfully applied to the pharmacokinetic study of 15 compounds from LJF. Furthermore, the repair rate of lung index and the improvement rate of IFN-γ and IL-6 improved after administration of the LJF, indicating that LJF possessed a positive effect on the treatment of RSV infection. Finally, by combining Spearman and Grey relation analysis, isochlorogenic acid B, isochlorogenic acid C, secoxyloganin, chlorogenic acid, and loganic acid are speculated to be the main effective ingredients of LJF in treating RSV. This study lays the foundation for attempts to reveal the mechanisms of the anti-RSV effect of LJF.
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Affiliation(s)
- Yuting Liang
- Institute of Pharmaceutical Research, Shandong University of Traditional Chinese Medicine, Jinan 250355, China; (Y.L.); (M.L.); (Y.W.); (L.L.)
| | - Mingjun Liu
- Institute of Pharmaceutical Research, Shandong University of Traditional Chinese Medicine, Jinan 250355, China; (Y.L.); (M.L.); (Y.W.); (L.L.)
| | - Yanghai Wang
- Institute of Pharmaceutical Research, Shandong University of Traditional Chinese Medicine, Jinan 250355, China; (Y.L.); (M.L.); (Y.W.); (L.L.)
| | - Lu Liu
- Institute of Pharmaceutical Research, Shandong University of Traditional Chinese Medicine, Jinan 250355, China; (Y.L.); (M.L.); (Y.W.); (L.L.)
| | - Yan Gao
- Institute of Pharmaceutical Research, Shandong University of Traditional Chinese Medicine, Jinan 250355, China; (Y.L.); (M.L.); (Y.W.); (L.L.)
- High Level Traditional Chinese Medicine Key Disciplines of the State Administration of Traditional Chinese Medicine: Pharmaceutics of Traditional Chinese Medicine, Jinan 250355, China
- Collaborative Innovation Center for Ecological Protection and High Quality Development of Characteristic Traditional Chinese Medicine in the Yellow River Basin, Jinan 250355, China
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Bajinka O, Tang Z, Mao Y, Qiu X, Darboe A, Tan Y. Respiratory syncytial virus infection disrupts pulmonary microbiota to induce microglia phenotype shift. J Med Virol 2023; 95:e28976. [PMID: 37522339 DOI: 10.1002/jmv.28976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 06/06/2023] [Accepted: 06/19/2023] [Indexed: 08/01/2023]
Abstract
The lung-brain axis is an emerging biological pathway that is being investigated in relation to microbiome medicine. Increasing evidence suggests that pulmonary viral infections can lead to distinct pathological imprints in the brain, so there is a need to explore and understand this mechanism and find possible interventions. This study used respiratory syncytial virus (RSV) infection in mice as a model to establish the potential lung-brain axis phenomenon. We hypothesized that RSV infection could disrupt the lung microbiota, compromise immune barriers, and induce a significant shift in microglia phenotype. One week old mice were randomized into the control, Ampicillin, RSV, and RSV+Ampicillin treated groups (n = 6 each). Seven days after the respective treatments, the mice were anaesthetized. Immunofluorescence and real-time qRT-PCR was used to detect virus. Hematoxylin-eosin staining was used to detect histopathology. Malondialdehyde and superoxide dismutase were used to determine oxidative stress and antioxidant capacity. Real-time qRT-PCR and enzyme-linked immunosorbent assay (ELISA) were used to measure Th differentiation in the lung. Real-time qRT-PCR, ELISA, and confocal immunofluorescence were used to determine the microglia phenotype. 16S DNA technology was used to detect lung microflora. RSV infection induces elevated oxidative stress, reduced antioxidant, and significant dysbacteriosis in the lungs of mice. Pulmonary microbes were found to enhance Th1-type immunoreactivity induced by RSV infection and eventually induced M1-type dominant microglia in the brains of mice. This study was able to establish a correlation between the pulmonary microbiome and brain function. Therefore, we recommend a large sample size study with robust data analysis for the long-term effects of antibiotics and RSV infection on brain physiology.
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Affiliation(s)
- Ousman Bajinka
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
- Medicine and Allied Health Sciences, University of The Gambia, Banjul, The Gambia
- Functional Cell Biology International Center for Genetic and Biotechnology (ICGEB), Trieste, Italy
| | - Zhongxiang Tang
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Yu Mao
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Xiangjie Qiu
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Alansana Darboe
- Functional Cell Biology International Center for Genetic and Biotechnology (ICGEB), Trieste, Italy
| | - Yurong Tan
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
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Que M, Li Y, Wang X, Zhan G, Luo X, Zhou Z. Role of astrocytes in sleep deprivation: accomplices, resisters, or bystanders? Front Cell Neurosci 2023; 17:1188306. [PMID: 37435045 PMCID: PMC10330732 DOI: 10.3389/fncel.2023.1188306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 06/05/2023] [Indexed: 07/13/2023] Open
Abstract
Sleep plays an essential role in all studied animals with a nervous system. However, sleep deprivation leads to various pathological changes and neurobehavioral problems. Astrocytes are the most abundant cells in the brain and are involved in various important functions, including neurotransmitter and ion homeostasis, synaptic and neuronal modulation, and blood-brain barrier maintenance; furthermore, they are associated with numerous neurodegenerative diseases, pain, and mood disorders. Moreover, astrocytes are increasingly being recognized as vital contributors to the regulation of sleep-wake cycles, both locally and in specific neural circuits. In this review, we begin by describing the role of astrocytes in regulating sleep and circadian rhythms, focusing on: (i) neuronal activity; (ii) metabolism; (iii) the glymphatic system; (iv) neuroinflammation; and (v) astrocyte-microglia cross-talk. Moreover, we review the role of astrocytes in sleep deprivation comorbidities and sleep deprivation-related brain disorders. Finally, we discuss potential interventions targeting astrocytes to prevent or treat sleep deprivation-related brain disorders. Pursuing these questions would pave the way for a deeper understanding of the cellular and neural mechanisms underlying sleep deprivation-comorbid brain disorders.
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Affiliation(s)
- Mengxin Que
- Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, Department of Anesthesiology, Tongji Medical College, Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Yujuan Li
- Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, Department of Anesthesiology, Tongji Medical College, Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Xuan Wang
- Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, Department of Anesthesiology, Tongji Medical College, Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Gaofeng Zhan
- Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, Department of Anesthesiology, Tongji Medical College, Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaoxiao Luo
- Department of Oncology, Tongji Medical College, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Zhiqiang Zhou
- Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, Department of Anesthesiology, Tongji Medical College, Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, China
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Santamaría G, Rengifo AC, Torres-Fernández O. NeuN distribution in brain structures of normal and Zika-infected suckling mice. J Mol Histol 2023:10.1007/s10735-023-10128-7. [PMID: 37199896 DOI: 10.1007/s10735-023-10128-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Accepted: 05/05/2023] [Indexed: 05/19/2023]
Abstract
Microcephaly is the more severe brain malformation because of Zika virus infection. Increased vulnerability of neural stem and progenitor cells to Zika infection during prenatal neurodevelopment impairs the complete formation of cortical layers. Normal development of cerebellum is also affected. However, the follow-up of apparently healthy children born to Zika exposed mothers during pregnancy has revealed other neurological sequelae. This suggests Zika infection susceptibility remains in nervous tissue after neurogenesis end, when differentiated neuronal populations predominate. The neuronal nuclear protein (NeuN) is an exclusive marker of postmitotic neurons. Changes in NeuN expression are associated with neuronal degeneration. We have evaluated immunohistochemical expression of NeuN protein in cerebral cortex, hippocampus, and cerebellum of normal and Zika-infected neonatal Balb/c mice. The highest NeuN immunoreactivity was found mainly in neurons of all cortical layers, pyramidal layer of hippocampus, granular layer of dentate gyrus and in internal granular layer of cerebellum. Viral infection caused marked loss of NeuN immunostaining in all these brain areas. This suggests neurodegenerative effects of Zika virus infection during postmitotic neuron maturation and contribute to interpretation of neuropathogenic mechanisms of Zika.
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Affiliation(s)
- Gerardo Santamaría
- Grupo de Morfología Celular, Instituto Nacional de Salud (INS), Av. Calle 26 No. 51-20, Bogotá, 111321, DC, Colombia
| | - Aura Caterine Rengifo
- Grupo de Morfología Celular, Instituto Nacional de Salud (INS), Av. Calle 26 No. 51-20, Bogotá, 111321, DC, Colombia
| | - Orlando Torres-Fernández
- Grupo de Morfología Celular, Instituto Nacional de Salud (INS), Av. Calle 26 No. 51-20, Bogotá, 111321, DC, Colombia.
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Yu J, Hua L, Cao X, Chen Q, Zeng X, Yuan Z, Wang Y. Construction of an individualized brain metabolic network in patients with advanced non-small cell lung cancer by the Kullback-Leibler divergence-based similarity method: A study based on 18F-fluorodeoxyglucose positron emission tomography. Front Oncol 2023; 13:1098748. [PMID: 36969017 PMCID: PMC10036828 DOI: 10.3389/fonc.2023.1098748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 02/13/2023] [Indexed: 03/12/2023] Open
Abstract
BackgroundLung cancer has one of the highest mortality rates of all cancers, and non-small cell lung cancer (NSCLC) accounts for the vast majority (about 85%) of lung cancers. Psychological and cognitive abnormalities are common in cancer patients, and cancer information can affect brain function and structure through various pathways. To observe abnormal brain function in NSCLC patients, the main purpose of this study was to construct an individualized metabolic brain network of patients with advanced NSCLC using the Kullback-Leibler divergence-based similarity (KLS) method.MethodsThis study included 78 patients with pathologically proven advanced NSCLC and 60 healthy individuals, brain 18F-FDG PET images of these individuals were collected and all patients with advanced NSCLC were followed up (>1 year) to confirm their overall survival. FDG-PET images were subjected to individual KLS metabolic network construction and Graph theoretical analysis. According to the analysis results, a predictive model was constructed by machine learning to predict the overall survival of NSLCL patients, and the correlation with the real survival was calculated.ResultsSignificant differences in the degree and betweenness distributions of brain network nodes between the NSCLC and control groups (p<0.05) were found. Compared to the normal group, patients with advanced NSCLC showed abnormal brain network connections and nodes in the temporal lobe, frontal lobe, and limbic system. The prediction model constructed using the abnormal brain network as a feature predicted the overall survival time and the actual survival time fitting with statistical significance (r=0.42, p=0.012).ConclusionsAn individualized brain metabolic network of patients with NSCLC was constructed using the KLS method, thereby providing more clinical information to guide further clinical treatment.
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Affiliation(s)
- Jie Yu
- Department of Nuclear Medicine, The Fifth Affiliated Hospital of Sun Yat-sen University, Sun Yat-sen University, Zhuhai, Guangdong, China
| | - Lin Hua
- Faculty of Health Sciences, University of Macau, Macau, Macau SAR, China
- Centre for Cognitive and Brain Sciences, University of Macau, Macau, Macau SAR, China
| | - Xiaoling Cao
- Department of Nuclear Medicine, The Fifth Affiliated Hospital of Sun Yat-sen University, Sun Yat-sen University, Zhuhai, Guangdong, China
| | - Qingling Chen
- Department of Nuclear Medicine, The Fifth Affiliated Hospital of Sun Yat-sen University, Sun Yat-sen University, Zhuhai, Guangdong, China
| | - Xinglin Zeng
- Faculty of Health Sciences, University of Macau, Macau, Macau SAR, China
| | - Zhen Yuan
- Faculty of Health Sciences, University of Macau, Macau, Macau SAR, China
- Centre for Cognitive and Brain Sciences, University of Macau, Macau, Macau SAR, China
- *Correspondence: Zhen Yuan, ; Ying Wang,
| | - Ying Wang
- Department of Nuclear Medicine, The Fifth Affiliated Hospital of Sun Yat-sen University, Sun Yat-sen University, Zhuhai, Guangdong, China
- *Correspondence: Zhen Yuan, ; Ying Wang,
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Dai P, Ruan P, Mao Y, Tang Z, Bajinka O, Wu G, Tan Y. The antiviral efficacies of small-molecule inhibitors against respiratory syncytial virus based on the F protein. J Antimicrob Chemother 2022; 78:169-179. [PMID: 36322459 DOI: 10.1093/jac/dkac370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 10/10/2022] [Indexed: 12/24/2022] Open
Abstract
OBJECTIVES Respiratory syncytial virus (RSV) infection is one of the three most common causes of death in the infants, pre-schoolers, immunocompromised patients and elderly individuals due to many complications and lack of specific treatment. During RSV infection, the fusion protein (F protein) mediates the fusion of the virus envelope with the host cell membrane. Therefore, the F protein is an effective target for viral inhibition. METHODS We identified potential small-molecule inhibitors against RSV-F protein for the treatment of RSV infection using virtual screening and molecular dynamics (MD) simulations. The CCK8 assay was used to determine the cytotoxicity and quantitative RT-PCR and indirect fluorescence assay (IFA) were used to determine the viral replication and RSV-induced inflammation in vitro. An RSV-infected mouse model was established, and viral replication was assayed using real-time quantitative PCR and IFA. Virus-induced complications were also examined using histopathological analysis, airway resistance and the levels of IL-1β, IL-6 and TNF-α. RESULTS The top three potential inhibitors against the RSV-F protein were screened from the FDA-approved drug database. Z65, Z85 and Z74 significantly inhibited viral replication and RSV-induced inflammation. They also significantly alleviated RSV infection and RSV-induced complications in vivo. Z65 and Z85 had no cytotoxicity and better anti-RSV effects than Z74. CONCLUSIONS Z65 and Z85 may be suitable candidates for the treatment of RSV and serve as the basis for the development of new drugs.
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Affiliation(s)
- Pei Dai
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha 410078, Hunan, China.,Second Department of Laboratory, Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University), Changsha, Hunan 410006, China
| | - Pinglang Ruan
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha 410078, Hunan, China
| | - Yu Mao
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha 410078, Hunan, China
| | - Zhongxiang Tang
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha 410078, Hunan, China
| | - Ousman Bajinka
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha 410078, Hunan, China.,School of Basic Medical Sciences, China-Africa Research Centre of Infectious Diseases, Central South University, Changsha 410078, Hunan, China
| | - Guojun Wu
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha 410078, Hunan, China
| | - Yurong Tan
- Department of Medical Microbiology, Xiangya School of Medicine, Central South University, Changsha 410078, Hunan, China.,School of Basic Medical Sciences, China-Africa Research Centre of Infectious Diseases, Central South University, Changsha 410078, Hunan, China
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