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Hiyoshi T, Nishime C, Nishinaka E, Seki F, Kawai K, Mochizuki M, Urano K, Imai T, Yamamoto T, Suzuki M. Induction of lung lesions by bronchial administration using bronchoscope technique in mice. J Toxicol Pathol 2024; 37:93-97. [PMID: 38584970 PMCID: PMC10995434 DOI: 10.1293/tox.2023-0123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 01/30/2024] [Indexed: 04/09/2024] Open
Abstract
This study aimed to establish an exposure method that can induce homogeneous lesions with minimal inter-individual variability. The distribution of lesions induced by bleomycin (BLM) administration was also analyzed. C57BL mice were intrabronchially administered 20 µL of BLM (3 mg/mL) using a bronchoscope in the left or right bronchus. The mice were sacrificed 14 days after administration, and their lungs were evaluated histopathologically. BLM-induced inflammatory lesions were widely observed in the lungs. In the left bronchus-treated group, lesions were uniformly observed throughout the lobe, and no individual differences were noted. Meanwhile, in the right bronchus-treated group, individual differences in the distribution of the pulmonary lesions were observed. The distribution of lesions differed among the four lobes of the right lung owing to their anatomical features. Administration into the left bronchus is recommended for highly homogeneous lung exposure and for establishing models that contribute to highly accurate toxicity and efficacy evaluations.
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Affiliation(s)
- Takako Hiyoshi
- Translational Research Division, Central Institute for
Experimental Medical and Life Science, 25-12-3 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa
210-0821, Japan
- CLEA Japan Inc., 4839-23 Kitayama, Fujinomiya, Shizuoka
418-0112, Japan
| | - Chiyoko Nishime
- Translational Research Division, Central Institute for
Experimental Medical and Life Science, 25-12-3 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa
210-0821, Japan
| | - Eiko Nishinaka
- Translational Research Division, Central Institute for
Experimental Medical and Life Science, 25-12-3 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa
210-0821, Japan
| | - Fumiko Seki
- Bioimaging Center, Central Institute for Experimental
Medical and Life Science, 25-12-3 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa 210-0821,
Japan
| | - Kenji Kawai
- Translational Research Division, Central Institute for
Experimental Medical and Life Science, 25-12-3 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa
210-0821, Japan
| | - Misa Mochizuki
- Translational Research Division, Central Institute for
Experimental Medical and Life Science, 25-12-3 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa
210-0821, Japan
| | - Koji Urano
- Translational Research Division, Central Institute for
Experimental Medical and Life Science, 25-12-3 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa
210-0821, Japan
| | - Toshio Imai
- Translational Research Division, Central Institute for
Experimental Medical and Life Science, 25-12-3 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa
210-0821, Japan
| | - Taichi Yamamoto
- Translational Research Division, Central Institute for
Experimental Medical and Life Science, 25-12-3 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa
210-0821, Japan
| | - Masami Suzuki
- Translational Research Division, Central Institute for
Experimental Medical and Life Science, 25-12-3 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa
210-0821, Japan
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Padykula I, Damodaran L, Young KT, Krunkosky M, Griffin EF, North JF, Neasham PJ, Pliasas VC, Siepker CL, Stanton JB, Howerth EW, Bahl J, Kyriakis CS, Tompkins SM. Pandemic Risk Assessment for Swine Influenza A Virus in Comparative In Vitro and In Vivo Models. Viruses 2024; 16:548. [PMID: 38675891 PMCID: PMC11053818 DOI: 10.3390/v16040548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 03/17/2024] [Accepted: 03/18/2024] [Indexed: 04/28/2024] Open
Abstract
Swine influenza A viruses pose a public health concern as novel and circulating strains occasionally spill over into human hosts, with the potential to cause disease. Crucial to preempting these events is the use of a threat assessment framework for human populations. However, established guidelines do not specify which animal models or in vitro substrates should be used. We completed an assessment of a contemporary swine influenza isolate, A/swine/GA/A27480/2019 (H1N2), using animal models and human cell substrates. Infection studies in vivo revealed high replicative ability and a pathogenic phenotype in the swine host, with replication corresponding to a complementary study performed in swine primary respiratory epithelial cells. However, replication was limited in human primary cell substrates. This contrasted with our findings in the Calu-3 cell line, which demonstrated a replication profile on par with the 2009 pandemic H1N1 virus. These data suggest that the selection of models is important for meaningful risk assessment.
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Affiliation(s)
- Ian Padykula
- Center for Vaccines and Immunology, University of Georgia, Athens, GA 30602, USA
- Department of Infectious Diseases, University of Georgia, Athens, GA 30602, USA
- Emory-UGA Centers of Excellence for Influenza Research and Surveillance (CEIRS), Athens, GA 30602, USA
| | - Lambodhar Damodaran
- Department of Infectious Diseases, University of Georgia, Athens, GA 30602, USA
- Emory-UGA Centers of Excellence for Influenza Research and Surveillance (CEIRS), Athens, GA 30602, USA
| | - Kelsey T. Young
- Department of Pathology, University of Georgia, Athens, GA 30602, USA
| | - Madelyn Krunkosky
- Center for Vaccines and Immunology, University of Georgia, Athens, GA 30602, USA
- Department of Infectious Diseases, University of Georgia, Athens, GA 30602, USA
- Emory-UGA Centers of Excellence for Influenza Research and Surveillance (CEIRS), Athens, GA 30602, USA
| | - Emily F. Griffin
- Center for Vaccines and Immunology, University of Georgia, Athens, GA 30602, USA
- Department of Infectious Diseases, University of Georgia, Athens, GA 30602, USA
- Emory-UGA Centers of Excellence for Influenza Research and Surveillance (CEIRS), Athens, GA 30602, USA
| | - James F. North
- Emory-UGA Centers of Excellence for Influenza Research and Surveillance (CEIRS), Athens, GA 30602, USA
- Department of Pathobiology, Auburn University, Auburn, AL 36849, USA
| | - Peter J. Neasham
- Emory-UGA Centers of Excellence for Influenza Research and Surveillance (CEIRS), Athens, GA 30602, USA
- Department of Pathobiology, Auburn University, Auburn, AL 36849, USA
| | - Vasilis C. Pliasas
- Emory-UGA Centers of Excellence for Influenza Research and Surveillance (CEIRS), Athens, GA 30602, USA
- Department of Pathobiology, Auburn University, Auburn, AL 36849, USA
| | - Chris L. Siepker
- Department of Pathology, University of Georgia, Athens, GA 30602, USA
| | - James B. Stanton
- Department of Pathology, University of Georgia, Athens, GA 30602, USA
| | | | - Justin Bahl
- Department of Infectious Diseases, University of Georgia, Athens, GA 30602, USA
| | - Constantinos S. Kyriakis
- Emory-UGA Centers of Excellence for Influenza Research and Surveillance (CEIRS), Athens, GA 30602, USA
- Department of Pathobiology, Auburn University, Auburn, AL 36849, USA
| | - Stephen Mark Tompkins
- Center for Vaccines and Immunology, University of Georgia, Athens, GA 30602, USA
- Department of Infectious Diseases, University of Georgia, Athens, GA 30602, USA
- Emory-UGA Centers of Excellence for Influenza Research and Surveillance (CEIRS), Athens, GA 30602, USA
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Jiang N, Cheng CJ, Liu Q, Strong R, Gelfond J, Nelson JF. Deciphering the Timing and Impact of Life-extending Drugs: A Novel Analytic Approach that Differentiates Early, Midlife, and Senescence Phase Efficacies. bioRxiv 2024:2024.03.27.585737. [PMID: 38586027 PMCID: PMC10996648 DOI: 10.1101/2024.03.27.585737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
Evidence that life-extending interventions are not uniformly effective across the lifespan calls for an analytic tool that can estimate age-specific treatment effects on mortality hazards. Here we report such a tool, applying it to mouse data from 42 agents tested in the NIA Interventions Testing Program. This tool identified agents that either reduced (22) or increased (16) mortality hazards or did both (6), all with marked variation in the duration of efficacy and magnitude of effect size. Only 7 reduced mortality hazards after the 90% mortality, when the burden of senescence is greatest. Sex differences were apparent in all parameters. This new analytic tool complements the commonly used log-rank test. It detects more potential life-extending candidates (22 versus 10) and indicates when during the life course they are effective. It also uncovers adverse effects. Most importantly, it identifies agents that specifically reduce mortality hazards during the senescent phase of life.
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Affiliation(s)
- Nisi Jiang
- The Sam and Ann Barshop Institute for Longevity and Aging Studies, UT Health San Antonio; San Antonio, TX, U.S.A
- Department of Cellular and Integrative Physiology, UT Health San Antonio; San Antonio, TX, U.S.A
| | - Catherine J. Cheng
- The Sam and Ann Barshop Institute for Longevity and Aging Studies, UT Health San Antonio; San Antonio, TX, U.S.A
- Department of Cellular and Integrative Physiology, UT Health San Antonio; San Antonio, TX, U.S.A
| | - Qianqian Liu
- Department of Population Health Sciences, UT Health San Antonio; San Antonio, TX, U.S.A
| | - Randy Strong
- The Sam and Ann Barshop Institute for Longevity and Aging Studies, UT Health San Antonio; San Antonio, TX, U.S.A
- Department of Pharmacology, UT Health San Antonio; San Antonio, TX, U.S.A
- South Texas Veterans Health Care System, San Antonio, TX, U.S.A
| | - Jonathan Gelfond
- The Sam and Ann Barshop Institute for Longevity and Aging Studies, UT Health San Antonio; San Antonio, TX, U.S.A
- Department of Population Health Sciences, UT Health San Antonio; San Antonio, TX, U.S.A
| | - James F. Nelson
- The Sam and Ann Barshop Institute for Longevity and Aging Studies, UT Health San Antonio; San Antonio, TX, U.S.A
- Department of Cellular and Integrative Physiology, UT Health San Antonio; San Antonio, TX, U.S.A
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Sun X, Lee HC, Lu T. Sorbs2 Deficiency and Vascular BK Channelopathy in Diabetes. Circ Res 2024; 134:858-871. [PMID: 38362769 PMCID: PMC10978258 DOI: 10.1161/circresaha.123.323538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 02/02/2024] [Indexed: 02/17/2024]
Abstract
BACKGROUND Vascular large conductance Ca2+-activated K+ (BK) channel, composed of the α-subunit (BK-α) and the β1-subunit (BK-β1), is a key determinant of coronary vasorelaxation and its function is impaired in diabetic vessels. However, our knowledge of diabetic BK channel dysregulation is incomplete. The Sorbs2 (Sorbin homology [SoHo] and Src homology 3 [SH3] domains-containing protein 2), is ubiquitously expressed in arteries, but its role in vascular pathophysiology is unknown. METHODS The role of Sorbs2 in regulating vascular BK channel activity was determined using patch-clamp recordings, molecular biological techniques, and in silico analysis. RESULTS Sorbs2 is not only a cytoskeletal protein but also an RNA-binding protein that binds to BK channel proteins and BK-α mRNA, regulating BK channel expression and function in coronary smooth muscle cells. Molecular biological studies reveal that the SH3 domain of Sorbs2 is necessary for Sorbs2 interaction with BK-α subunits, while both the SH3 and SoHo domains of Sorbs2 interact with BK-β1 subunits. Deletion of the SH3 or SoHo domains abolishes the Sorbs2 effect on the BK-α/BK-β1 channel current density. Additionally, Sorbs2 is a target gene of the Nrf2 (nuclear factor erythroid-2-related factor 2), which binds to the promoter of Sorbs2 and regulates Sorbs2 expression in coronary smooth muscle cells. In vivo studies demonstrate that Sorbs2 knockout mice at 4 months of age display a significant decrease in BK channel expression and function, accompanied by impaired BK channel Ca2+-sensitivity and BK channel-mediated vasodilation in coronary arteries, without altering their body weights and blood glucose levels. Importantly, Sorbs2 expression is significantly downregulated in the coronary arteries of db/db type 2 diabetic mice. CONCLUSIONS Sorbs2, a downstream target of Nrf2, plays an important role in regulating BK channel expression and function in vascular smooth muscle cells. Vascular Sorbs2 is downregulated in diabetes. Genetic knockout of Sorbs2 manifests coronary BK channelopathy and vasculopathy observed in diabetic mice, independent of obesity and glucotoxicity.
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Affiliation(s)
- Xiaojing Sun
- The Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN
| | - Hon-Chi Lee
- The Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN
| | - Tong Lu
- The Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN
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Wang M, Zhang L, Piao H, Jin Y, Cui C, Jin X, Cui L, Yan C. Synbiotic of Pediococcus acidilactici and Inulin Ameliorates Dextran Sulfate Sodium-Induced Acute Ulcerative Colitis in Mice. J Microbiol Biotechnol 2024; 34:689-699. [PMID: 38346819 PMCID: PMC11016757 DOI: 10.4014/jmb.2308.08056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 11/24/2023] [Accepted: 12/13/2023] [Indexed: 04/17/2024]
Abstract
Colitis is a major gastrointestinal disease that threatens human health. In this study, a synbiotic composed of inulin and Pediococcus acidilactici (P. acidilactici) was investigated for its ability to alleviate dextran sulfate sodium (DSS)-induced colitis. The results revealed that the synbiotic, composed of inulin and P. acidilactici, attenuated the body weight loss and disease activity index (DAI) score in mice with DSS-mediated colitis. Determination of biochemical indicators found that the synbiotic increased anti-oxidation and alleviated inflammation in mice. Additionally, histopathological examination revealed that colonic goblet cell loss and severe mucosal damage in the model group were significantly reversed by the combination of inulin and P. acidilactici. Moreover, synbiotic treatment significantly reduced the levels of IL-1β, TNF-α, and IL-6 in the serum of mice. Thus, a synbiotic composed of inulin and P. acidilactici has preventive and therapeutic effects on DSSinduced colitis in mice.
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Affiliation(s)
- Mingzhu Wang
- Department of Animal Science, Yanbian University, Yanji, Jilin 133002, P.R. China
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji, Jilin 133002, P.R. China
| | - Longzhou Zhang
- Department of Animal Science, Yanbian University, Yanji, Jilin 133002, P.R. China
| | - Huiyan Piao
- Department of Chemistry, National Demonstration Centre for Experimental Chemistry Education, Yanbian University, Yanji, Jilin 133002, P.R. China
| | - Yuanming Jin
- Department of Animal Science, Yanbian University, Yanji, Jilin 133002, P.R. China
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji, Jilin 133002, P.R. China
| | - Chengdu Cui
- Department of Animal Medicine, Yanbian University, Yanji, Jilin 133002, P.R. China
| | - Xin Jin
- Laboratory Animal Center?Yanbian University, Yanji, Jilin 133002, P.R. China
| | - Lianhua Cui
- Department of Animal Science, Yanbian University, Yanji, Jilin 133002, P.R. China
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji, Jilin 133002, P.R. China
| | - Chunri Yan
- Department of Preventive Medicine, Medical College, Yanbian University, Yanji, Jilin 133002, P.R. China
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Marfil MJ, Blanco FC, Colombatti Olivieri MA, Eirin ME, Zumárraga MJ. Transmissibility of Mycobacterium pinnipedii in a murine model. Front Cell Infect Microbiol 2024; 14:1328981. [PMID: 38606297 PMCID: PMC11007016 DOI: 10.3389/fcimb.2024.1328981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 03/04/2024] [Indexed: 04/13/2024] Open
Abstract
The causative agent of tuberculosis in pinnipeds is Mycobacterium pinnipedii, a member of the Mycobacterium tuberculosis complex (MTC). The natural hosts are pinnipeds; however, other non-marine mammals, including humans, can also be infected. The transmissibility of a pathogen is related to its virulence. The transmissibility of a M. pinnipedii strain (i.e., 1856) was investigated in a murine model and compared with that of two Mycobacterium bovis strains (i.e., 534 and 04-303) with different reported virulence. Non-inoculated mice (sentinels) were co-housed with intratracheally inoculated mice. Detailed inspection of mice to search for visible tuberculosis lesions in the lungs and spleen was performed, and bacillus viability at 30, 60, and 90 days post-inoculation (dpi) was assayed. A transmissibility of 100% was recorded at 30 dpi in sentinel mice co-housed with the inoculated mice from the M. pinnipedii and M. bovis 04-303 groups, as evidenced by the recovery of viable M. pinnipedii and M. bovis from the lungs of sentinel mice. Mice inoculated with M. pinnipedii (1856) and M. bovis (534) survived until euthanized, whereas five of the M. bovis 04-303-inoculated mice died at 17 dpi. This study constitutes the first report of the transmissibility of a M. pinnipedii strain in mice and confirms the utility of this experimental model to study virulence features such as the transmission of poorly characterized MTC species.
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Affiliation(s)
- María Jimena Marfil
- Cátedra de Enfermedades Infecciosas, Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, Ciudad Autónoma d Buenos Aires, Argentina
| | - Federico Carlos Blanco
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO) UEDD CONICET-Instituto Nacional de Tecnología Agropecuaria, Argentina (INTA), Centro de Investigación en Cs. Veterinarias y Agronómicas (CICVyA)-CNIA, Hurlingham, Buenos Aires, Argentina
| | - María Alejandra Colombatti Olivieri
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO) UEDD CONICET-Instituto Nacional de Tecnología Agropecuaria, Argentina (INTA), Centro de Investigación en Cs. Veterinarias y Agronómicas (CICVyA)-CNIA, Hurlingham, Buenos Aires, Argentina
| | - María Emilia Eirin
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO) UEDD CONICET-Instituto Nacional de Tecnología Agropecuaria, Argentina (INTA), Centro de Investigación en Cs. Veterinarias y Agronómicas (CICVyA)-CNIA, Hurlingham, Buenos Aires, Argentina
| | - Martín José Zumárraga
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO) UEDD CONICET-Instituto Nacional de Tecnología Agropecuaria, Argentina (INTA), Centro de Investigación en Cs. Veterinarias y Agronómicas (CICVyA)-CNIA, Hurlingham, Buenos Aires, Argentina
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Patel JC, Sherpa AD, Melani R, Witkovsky P, Wiseman MR, O'Neill B, Aoki C, Tritsch NX, Rice ME. GABA co-released from striatal dopamine axons dampens phasic dopamine release through autoregulatory GABA A receptors. Cell Rep 2024; 43:113834. [PMID: 38431842 DOI: 10.1016/j.celrep.2024.113834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 11/29/2023] [Accepted: 02/05/2024] [Indexed: 03/05/2024] Open
Abstract
Striatal dopamine axons co-release dopamine and gamma-aminobutyric acid (GABA), using GABA provided by uptake via GABA transporter-1 (GAT1). Functions of GABA co-release are poorly understood. We asked whether co-released GABA autoinhibits dopamine release via axonal GABA type A receptors (GABAARs), complementing established inhibition by dopamine acting at axonal D2 autoreceptors. We show that dopamine axons express α3-GABAAR subunits in mouse striatum. Enhanced dopamine release evoked by single-pulse optical stimulation in striatal slices with GABAAR antagonism confirms that an endogenous GABA tone limits dopamine release. Strikingly, an additional inhibitory component is seen when multiple pulses are used to mimic phasic axonal activity, revealing the role of GABAAR-mediated autoinhibition of dopamine release. This autoregulation is lost in conditional GAT1-knockout mice lacking GABA co-release. Given the faster kinetics of ionotropic GABAARs than G-protein-coupled D2 autoreceptors, our data reveal a mechanism whereby co-released GABA acts as a first responder to dampen phasic-to-tonic dopamine signaling.
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Affiliation(s)
- Jyoti C Patel
- Department of Neurosurgery, New York University Grossman School of Medicine, 550 First Avenue, New York, NY 10016, USA.
| | - Ang D Sherpa
- Department of Neurosurgery, New York University Grossman School of Medicine, 550 First Avenue, New York, NY 10016, USA; Center for Neural Science New York University, 4 Washington Place, New York, NY 10003, USA
| | - Riccardo Melani
- NYU Neuroscience Institute, New York University Grossman School of Medicine, 550 First Avenue, New York, NY 10016, USA
| | - Paul Witkovsky
- Department of Neurosurgery, New York University Grossman School of Medicine, 550 First Avenue, New York, NY 10016, USA
| | - Madeline R Wiseman
- Department of Neurosurgery, New York University Grossman School of Medicine, 550 First Avenue, New York, NY 10016, USA
| | - Brian O'Neill
- Department of Neurosurgery, New York University Grossman School of Medicine, 550 First Avenue, New York, NY 10016, USA
| | - Chiye Aoki
- NYU Neuroscience Institute, New York University Grossman School of Medicine, 550 First Avenue, New York, NY 10016, USA; Center for Neural Science New York University, 4 Washington Place, New York, NY 10003, USA
| | - Nicolas X Tritsch
- NYU Neuroscience Institute, New York University Grossman School of Medicine, 550 First Avenue, New York, NY 10016, USA
| | - Margaret E Rice
- Department of Neurosurgery, New York University Grossman School of Medicine, 550 First Avenue, New York, NY 10016, USA; NYU Neuroscience Institute, New York University Grossman School of Medicine, 550 First Avenue, New York, NY 10016, USA.
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Su Y, Huang J, Shi P, Li P, Huang P, Zeng J. Lotus Leaf Extract Alleviates Lipopolysaccharide-Induced Intestinal Injury in Mice by Regulating Oxidative Stress and Inflammation. J Med Food 2024. [PMID: 38526570 DOI: 10.1089/jmf.2023.k.0242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2024] Open
Abstract
Inflammatory bowel disease, a disease featured by intestinal epithelial barrier destruction and dysfunction, has been a constant threat to animal health. The primary objective of this research was to assess the impact of the extract derived from lotus leaves (LLE) on lipopolysaccharide (LPS) induced damage to the intestines in mice, as well as to investigate the fundamental mechanism involved. The LLE was prepared using ultrasonic extraction in this experiment, and the LLE total flavonoid content was 117.02 ± 10.73 mg/g. The LLE had strong antioxidant activity in vitro, as assessed by 2, 2-diphenyl-1-picrylhydrazyl, ferric reducing antioxidant power, and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) methods. In the vivo experiment, different doses of LLE (50, 100, and 200 mg/kg) were administered for 2 weeks before LPS treatment in mice. The results revealed that LLE alleviates intestinal tissue damage in LPS-induced mice. In the jejunum tissue, LLE significantly upregulated mRNA and protein expression levels of tight junction proteins, such as ZO-1, occludin, and claudin-1, and decreased the contents of the inflammatory cytokines, interleukin (IL)-1β, IL-6, and tumor necrosis factor-α. Furthermore, the malondialdehyde and lactate dehydrogenase contents increased by LPS in the liver were significantly reduced after administration of LLE, and the total antioxidant capacity, superoxide dismutase, and reduced glutathione decreased by LPS were remarkably increased by LLE. It was found that LLE could relieve LPS-induced oxidative stress by upregulating mRNA and protein expression of Nrf2 and HO-1 in jejunum tissue. In conclusion, LLE alleviates LPS-induced intestinal damage through regulation of the Nrf2/HO-1 signal pathway to alleviate oxidative stress, reducing inflammatory factors and increasing the expression of tight junction proteins in mice.
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Affiliation(s)
- Yue Su
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, China
- Hunan Key Laboratory of Traditional Chinese Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan, China
| | - Jialu Huang
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, China
- Hunan Key Laboratory of Traditional Chinese Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan, China
| | - Panpan Shi
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan, China
| | - Pingping Li
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan, China
| | - Peng Huang
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan, China
| | - Jianguo Zeng
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, China
- Hunan Key Laboratory of Traditional Chinese Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan, China
- College of Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan, China
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Zhang J, Zhang P, Li S, Yu T, Lai X, He Y. Study on the effect and mechanism of Lacticaseibacillus rhamnosus AFY06 on inflammation-associated colorectal cancer induced by AOM/DSS in mice. Front Microbiol 2024; 15:1382781. [PMID: 38572238 PMCID: PMC10987852 DOI: 10.3389/fmicb.2024.1382781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Accepted: 03/05/2024] [Indexed: 04/05/2024] Open
Abstract
Introduction Lacticaseibacillus rhamnosus AFY06 (LR-AFY06) is a microorganism isolated from naturally fermented yogurt in Xinjiang, China. Methods In this study, we investigated the effects and mechanisms of LR-AFY06 in a mouse model of inflammation-associated colon cancer. The mouse model was established by azoxymethane/dextran sulfate sodium (AOM/DSS) induction. The tumor number in intestinal tissues was counted, and the histopathological analysis was performed on colon tissues. Enzyme-linked immunosorbent assay and real-time quantitative polymerase chain reaction were performed to measure relevant protein levels in colon tissues. Results LR-AFY06 treatment alleviated weight loss, increased organ index, reduced intestinal tumor incidence, improved histopathological damage, decreased the levels of inflammatory cytokines such as interleukin-6 (IL-6), interleukin-1 beta (IL-1β), tumor necrosis factor alpha (TNF-α), nuclear factor κB (NF-κB), and inducible nitric oxide synthase (iNOS) in the serum and colon tissue, downregulated the mRNA expression of inhibitor of NF-κB beta (IκBβ), p65, p50, p52, B-cell lymphoma-2 (Bcl-2), and B-cell lymphoma-extra large (Bcl-xL) in colon tissues, and increased the mRNA expression of Bid and caspase-8. The high concentration of LR-AFY06 exerted a better effect than the low concentration; however, the effect was slightly inferior to that of aspirin. Moreover, LR-AFY06 mitigated the intestinal inflammatory process and inhibited intestinal tumor development by regulating the NF-κB and apoptosis pathways. Discussion The present study indicates the regulatory potential of LR-AFY06 in inflammation-associated colorectal cancer in mice, providing a valuable basis for further research.
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Affiliation(s)
- Jing Zhang
- Environmental and Quality Inspection College, Chongqing Chemical Industry Vocational College, Chongqing, China
| | - Piyun Zhang
- Department of Gastroenterology and Hepatology, Chongqing Emergency Medical Center, Chongqing University Central Hospital, Chongqing, China
| | - Sijia Li
- Environmental and Quality Inspection College, Chongqing Chemical Industry Vocational College, Chongqing, China
| | - Ting Yu
- College of Traditional Chinese Medicine, Chongqing Medical University, Chongqing, China
| | - Xiangyu Lai
- Chongqing Key Laboratory of Translational Research for Cancer Metastasis and Individualized Treatment, Chongqing University Cancer Hospital, Chongqing Cancer Institute, Chongqing Cancer Hospital, Chongqing, China
| | - Yongpeng He
- Chongqing Key Laboratory of Translational Research for Cancer Metastasis and Individualized Treatment, Chongqing University Cancer Hospital, Chongqing Cancer Institute, Chongqing Cancer Hospital, Chongqing, China
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Iwamoto Y, Kimura T, Dan K, Iwamoto H, Sanada J, Fushimi Y, Katakura Y, Shimoda M, Nogami Y, Shirakiya Y, Nakanishi S, Mune T, Kaku K, Kaneto H. Dipeptidyl peptidase-4 inhibitor and sodium-glucose cotransporter 2 inhibitor additively ameliorate hepatic steatosis through different mechanisms of action in high-fat diet-fed mice. Diabetes Obes Metab 2024. [PMID: 38504118 DOI: 10.1111/dom.15548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 02/26/2024] [Accepted: 02/27/2024] [Indexed: 03/21/2024]
Abstract
AIM Dipeptidyl peptidase-4 (DPP-4) inhibitors suppress the inactivation of incretin hormones and lower blood glucose levels by inhibiting DPP-4 function. Sodium-glucose cotransporter 2 (SGLT2) inhibitors lower blood glucose levels in an insulin-independent manner by inhibiting renal reabsorption of glucose. DPP-4 and SGLT2 inhibitors each have the potential to improve hepatic steatosis; however, their combined effects remain unclear. In this study, we examined the effects of the combination of these drugs on hepatic steatosis using high-fat diet-fed mice. METHOD C57BL/6J male mice were fed a 60% high-fat diet for 2 months to induce hepatic steatosis. Mice were divided into four groups (control; DPP-4 inhibitor anagliptin; SGLT2 inhibitor luseogliflozin; anagliptin and luseogliflozin combination), and the effects of each drug and their combination on hepatic steatosis after a 4-week intervention were evaluated. RESULTS There were no differences in blood glucose levels among the four groups. Anagliptin suppresses inflammation- and chemokine-related gene expression. It also improved macrophage fractionation in the liver. Luseogliflozin reduced body weight, hepatic gluconeogenesis and blood glucose levels in the oral glucose tolerance test. The combination treatment improved hepatic steatosis without interfering with the effects of anagliptin and luseogliflozin, respectively, and fat content and inflammatory gene expression in the liver were significantly improved in the combination group compared with the other groups. CONCLUSION The combination therapy with the DPP-4 inhibitor anagliptin and the SGLT2 inhibitor luseogliflozin inhibits fat deposition in the liver via anti-inflammatory effects during the early phase of diet-induced liver steatosis.
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Affiliation(s)
- Yuichiro Iwamoto
- Department of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, Kurashiki, Japan
| | - Tomohiko Kimura
- Department of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, Kurashiki, Japan
| | - Kazunori Dan
- Department of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, Kurashiki, Japan
| | - Hideyuki Iwamoto
- Department of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, Kurashiki, Japan
| | - Junpei Sanada
- Department of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, Kurashiki, Japan
| | - Yoshiro Fushimi
- Department of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, Kurashiki, Japan
| | - Yukino Katakura
- Department of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, Kurashiki, Japan
| | - Masashi Shimoda
- Department of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, Kurashiki, Japan
| | - Yuka Nogami
- Department of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, Kurashiki, Japan
| | - Yoshiko Shirakiya
- Department of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, Kurashiki, Japan
| | - Shuhei Nakanishi
- Department of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, Kurashiki, Japan
| | - Tomoatsu Mune
- Department of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, Kurashiki, Japan
| | - Kohei Kaku
- Department of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, Kurashiki, Japan
| | - Hideaki Kaneto
- Department of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, Kurashiki, Japan
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Zemtsovski JD, Tumpara S, Schmidt S, Vijayan V, Klos A, Laudeley R, Held J, Immenschuh S, Wurm FM, Welte T, Haller H, Janciauskiene S, Shushakova N. Alpha1-antitrypsin improves survival in murine abdominal sepsis model by decreasing inflammation and sequestration of free heme. Front Immunol 2024; 15:1368040. [PMID: 38562925 PMCID: PMC10982482 DOI: 10.3389/fimmu.2024.1368040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Accepted: 02/27/2024] [Indexed: 04/04/2024] Open
Abstract
Background Excessive inflammation, hemolysis, and accumulation of labile heme play an essential role in the pathophysiology of multi-organ dysfunction syndrome (MODS) in sepsis. Alpha1-antitrypsin (AAT), an acute phase protein with heme binding capacity, is one of the essential modulators of host responses to inflammation. In this study, we evaluate the putative protective effect of AAT against MODS and mortality in a mouse model of polymicrobial abdominal sepsis. Methods Polymicrobial abdominal sepsis was induced in C57BL/6N mice by cecal ligation and puncture (CLP). Immediately after CLP surgery, mice were treated intraperitoneally with three different forms of human AAT-plasma-derived native (nAAT), oxidized nAAT (oxAAT), or recombinant AAT (recAAT)-or were injected with vehicle. Sham-operated mice served as controls. Mouse survival, bacterial load, kidney and liver function, immune cell profiles, cytokines/chemokines, and free (labile) heme levels were assessed. In parallel, in vitro experiments were carried out with resident peritoneal macrophages (MPMΦ) and mouse peritoneal mesothelial cells (MPMC). Results All AAT preparations used reduced mortality in septic mice. Treatment with AAT significantly reduced plasma lactate dehydrogenase and s-creatinine levels, vascular leakage, and systemic inflammation. Specifically, AAT reduced intraperitoneal accumulation of free heme, production of cytokines/chemokines, and neutrophil infiltration into the peritoneal cavity compared to septic mice not treated with AAT. In vitro experiments performed using MPMC and primary MPMΦ confirmed that AAT not only significantly decreases lipopolysaccharide (LPS)-induced pro-inflammatory cell activation but also prevents the enhancement of cellular responses to LPS by free heme. In addition, AAT inhibits cell death caused by free heme in vitro. Conclusion Data from the septic CLP mouse model suggest that intraperitoneal AAT treatment alone is sufficient to improve sepsis-associated organ dysfunctions, preserve endothelial barrier function, and reduce mortality, likely by preventing hyper-inflammatory responses and by neutralizing free heme.
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Affiliation(s)
- Jan D. Zemtsovski
- Department of Nephrology and Hypertension, Hannover Medical School, Hannover, Germany
| | - Srinu Tumpara
- Department of Respiratory Medicine, Member of the German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover Medical School, Hannover, Germany
| | | | - Vijith Vijayan
- Institute for Transfusion Medicine and Transplant Engineering, Hannover Medical School, Hannover, Germany
| | - Andreas Klos
- Institute of Medical Microbiology and Hospital Epidemiology, Hannover Medical School, Hannover, Germany
| | - Robert Laudeley
- Institute of Medical Microbiology and Hospital Epidemiology, Hannover Medical School, Hannover, Germany
| | - Julia Held
- Department of Respiratory Medicine, Member of the German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover Medical School, Hannover, Germany
| | - Stephan Immenschuh
- Institute for Transfusion Medicine and Transplant Engineering, Hannover Medical School, Hannover, Germany
| | - Florian M. Wurm
- Faculty of Life Sciences, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Tobias Welte
- Department of Respiratory Medicine, Member of the German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover Medical School, Hannover, Germany
| | - Hermann Haller
- Department of Nephrology and Hypertension, Hannover Medical School, Hannover, Germany
| | - Sabina Janciauskiene
- Department of Respiratory Medicine, Member of the German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover Medical School, Hannover, Germany
| | - Nelli Shushakova
- Department of Nephrology and Hypertension, Hannover Medical School, Hannover, Germany
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Afaloniati H, Aindelis G, Spyridopoulou K, Lagou MK, Tsingotjidou A, Chlichlia K, Erdman SE, Poutahidis T, Angelopoulou K. Peri-weaning cholera toxin consumption suppresses chemically-induced carcinogenesis in mice. Int J Cancer 2024; 154:1097-1110. [PMID: 38095490 DOI: 10.1002/ijc.34816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 10/27/2023] [Accepted: 11/17/2023] [Indexed: 01/23/2024]
Abstract
Gastrointestinal bacteria are known to have an impact on local and systemic immunity, and consequently either promote or suppress cancer development. Following the notion that perinatal bacterial exposure might confer immune system competency for life, we investigated whether early-life administration of cholera-toxin (CT), a protein exotoxin of the small intestine pathogenic bacterium Vibrio cholerae, may shape local and systemic immunity to impart a protective effect against tumor development in epithelia distantly located from the gut. For that, newborn mice were orally treated with low non-pathogenic doses of CT and later challenged with the carcinogen 7,12-dimethylbenzanthracene (DMBA), known to cause mainly mammary, but also skin, lung and stomach cancer. Our results revealed that CT suppressed the overall incidence and multiplicity of tumors, with varying efficiencies among cancer types, and promoted survival. Harvesting mouse tissues at an earlier time-point (105 instead of 294 days), showed that CT does not prevent preneoplastic lesions per se but it rather hinders their evolution into tumors. CT pretreatment universally increased apoptosis in the cancer-prone mammary, lung and nonglandular stomach, and altered the expression of several cancer-related molecules. Moreover, CT had a long-term effect on immune system cells and factors, the most prominent being the systemic neutrophil decrease. Finally, CT treatment significantly affected gut bacterial flora composition, leading among others to a major shift from Clostridia to Bacilli class abundance. Overall, these results support the notion that early-life CT consumption is able to affect host's immune, microbiome and gene expression profiles toward the prevention of cancer.
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Affiliation(s)
- Hara Afaloniati
- Laboratory of Biochemistry and Toxicology, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Georgios Aindelis
- Department of Molecular Biology and Genetics, Democritus University of Thrace, University Campus Dragana, Alexandroupolis, Greece
| | - Katerina Spyridopoulou
- Department of Molecular Biology and Genetics, Democritus University of Thrace, University Campus Dragana, Alexandroupolis, Greece
| | - Maria K Lagou
- Laboratory of Pathology, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Anastasia Tsingotjidou
- Laboratory of Anatomy, Histology and Embryology, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Katerina Chlichlia
- Department of Molecular Biology and Genetics, Democritus University of Thrace, University Campus Dragana, Alexandroupolis, Greece
| | - Suzan E Erdman
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Theofilos Poutahidis
- Laboratory of Pathology, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Katerina Angelopoulou
- Laboratory of Biochemistry and Toxicology, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
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Zhou Z, Huayu M, Mu Y, Tang F, Ge RL. Ubenimex combined with Albendazole for the treatment of Echinococcus multilocularis-induced alveolar echinococcosis in mice. Front Vet Sci 2024; 11:1320308. [PMID: 38585297 PMCID: PMC10995866 DOI: 10.3389/fvets.2024.1320308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 03/05/2024] [Indexed: 04/09/2024] Open
Abstract
Introduction Alveolar echinococcosis (AE) is a parasitic disease caused by E. multilocularis metacestodes and it is highly prevalent in the northern hemisphere. We have previously found that vaccination with E. multilocularis-Leucine aminopeptidase (EM-LAP) could inhibit the growth and invasion of E. multilocularis in host liver, and Ubenimex, a broad-spectrum inhibitor of LAP, could also inhibit E. multilocularis invasion but had a limited effect on the growth and development of E. multilocularis. Methods In this study, the therapeutic effect of Ubenimex combined with Albendazole on AE was evaluated. Mice were intraperitoneally injected with protoscoleces and imaging examination was performed at week 8 and week 16 to detect cyst change. During this period, mice were intraperitoneally injected with Ubenimex and intragastrically administered with Albendazole suspension. At last, the therapeutic effect was evaluated by morphological and pathological examination and liver function. Results The results revealed that the combined treatment could inhibit the growth and infiltration of cysts in BALB/c mice infected with E. multilocularis protoscoleces. The weight, number, invasion and fibrosis of cysts were reduced in mice treated with Ubenimex in combination with Albendazole. The same effect was achieved by the single Ubenimex treatment because of its inhibitory effect on LAP activity, but it was less effective in inhibiting the growth of cysts. The levels of ALT, AST, TBIL, DBIL, ALP, and γ-GT were reduced after the combined treatment, indicating that treatment with both Ubenimex and Albendazole could alleviate liver damage. Discussion This study suggests that the combined treatment with Ubenimex and Albendazole could be a potential therapeutic strategy for E. multilocularis infections.
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Affiliation(s)
- Zhen Zhou
- Research Center for High Altitude Medicine of Qinghai University, Xining, Qinghai, China
- Key Laboratory of High Altitude Medicine in Qinghai Provincial, Qinghai University, Xining, Qinghai, China
| | - Meiduo Huayu
- Research Center for High Altitude Medicine of Qinghai University, Xining, Qinghai, China
- Key Laboratory of High Altitude Medicine in Qinghai Provincial, Qinghai University, Xining, Qinghai, China
| | - Yalin Mu
- Department of Medical Imaging Center, Qinghai University Affiliated Hospital, Xining, Qinghai, China
| | - Feng Tang
- Research Center for High Altitude Medicine of Qinghai University, Xining, Qinghai, China
- Key Laboratory of High Altitude Medicine in Qinghai Provincial, Qinghai University, Xining, Qinghai, China
| | - Ri-Li Ge
- Research Center for High Altitude Medicine of Qinghai University, Xining, Qinghai, China
- Key Laboratory of High Altitude Medicine in Qinghai Provincial, Qinghai University, Xining, Qinghai, China
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Cao Y, Wang Z, Dai X, Zhang D, Zeng Y, Ni X, Pan K. Evaluation of probiotic properties of a Brevibacillus laterosporus strain. FASEB J 2024; 38:e23530. [PMID: 38466314 DOI: 10.1096/fj.202302408r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 01/25/2024] [Accepted: 02/19/2024] [Indexed: 03/12/2024]
Abstract
Brevibacillus laterosporus is a strain of probiotic bacteria that has been widely used in pest control, cash crop, and other production areas. However, few studies have been conducted on its use as a feed additive in animals. Therefore, the probiotic potential of B. laterosporus PBC01 was evaluated by characterizing hydrophobicity, auto-aggregation activity, bile salt and simulated gastrointestinal fluid tolerance, bienzymatic, and antibacterial activity. Antibiotic susceptibility, hemolysis assays, and supplemental feeding of mice were also performed to evaluate safety features. Our results showed that B. laterosporus PBC01 had moderate hydrophobicity, high auto-agglutination ability. Meanwhile, B. laterosporus PBC01 had good tolerance to bile salt and simulated gastrointestinal fluid. It had the ability to secrete protease, cellulase, and to inhibit various pathogens. In addition, B. laterosporus PBC01 was sensitive to many antibiotics, and did not produce hemolysin. In the safety assessment of mice, it did not cause any deaths, nor did it affect the cell components of blood, antioxidant capacity, and reproductive health. The study indicated the great probiotic characteristics and safety of B. laterosporus PBC01. This may provide a theoretical basis for the clinical application and development of probiotic-based feed additives.
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Affiliation(s)
- Yuheng Cao
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | | | - Xixi Dai
- Chongqing Three Gorges Vocational College, Chongqing, China
| | - Dongmei Zhang
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Yan Zeng
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Xueqin Ni
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Kangcheng Pan
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
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Jáuregui EJ, Scheinman KL, Bibriesca Mejia IK, Pruett L, Zaini H, Finkbeiner C, Phillips JA, Gantz JA, Nguyen TB, Phillips JO, Stone JS. Sensorineural correlates of failed functional recovery after natural regeneration of vestibular hair cells in adult mice. Front Neurol 2024; 15:1322647. [PMID: 38523617 PMCID: PMC10960365 DOI: 10.3389/fneur.2024.1322647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 02/23/2024] [Indexed: 03/26/2024] Open
Abstract
Vestibular hair cells (HCs) are mechanoreceptors that sense head motions by modulating the firing rate of vestibular ganglion neurons (VGNs), whose central processes project to vestibular nucleus neurons (VNNs) and cerebellar neurons. We explored vestibular function after HC destruction in adult Pou4f3+/DTR (DTR) mice, in which injections of high-dose (50 ng/g) diphtheria toxin (DT) destroyed most vestibular HCs within 2 weeks. At that time, DTR mice had lost the horizontal vestibulo-ocular reflex (aVORH), and their VNNs failed to upregulate nuclear cFos expression in response to a vestibular stimulus (centrifugation). Five months later, 21 and 14% of HCs were regenerated in utricles and horizontal ampullae, respectively. The vast majority of HCs present were type II. This degree of HC regeneration did not restore the aVORH or centrifugation-evoked cFos expression in VNNs. The failure to regain vestibular pathway function was not due to degeneration of VGNs or VNNs because normal neuron numbers were maintained after HC destruction. Furthermore, sinusoidal galvanic stimulation at the mastoid process evoked cFos protein expression in VNNs, indicating that VGNs were able to regulate VNN activity after HC loss. aVORH and cFos responses in VNNs were robust after low-dose (25 ng/g) DT, which compared to high-dose DT resulted in a similar degree of type II HC death and regeneration but spared more type I HCs in both organs. These findings demonstrate that having more type I HCs is correlated with stronger responses to vestibular stimulation and suggest that regenerating type I HCs may improve vestibular function after HC loss.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Jennifer S. Stone
- Department of Otolaryngology-Head and Neck Surgery and the Virginia Merrill Bloedel Hearing Research Center, University of Washington, Seattle, WA, United States
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Pajski ML, Byrd C, Nandigama N, Seguin E, Seguin A, Fennell A, Graber TG. Endurance exercise preserves physical function in adult and older male C57BL/6 mice: high intensity interval training (HIIT) versus voluntary wheel running (VWR). Front Aging 2024; 5:1356954. [PMID: 38523671 PMCID: PMC10958787 DOI: 10.3389/fragi.2024.1356954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Accepted: 02/23/2024] [Indexed: 03/26/2024]
Abstract
Exercise has been shown to improve physical function, mitigate aspects of chronic disease and to potentially alter the trajectory of age-related onset of frailty and sarcopenia. Reliable and valid preclinical models are necessary to elucidate the underlying mechanisms at the intersection of age, exercise, and functional decline. The purpose of this study was to compare, head to head, the effects of two common pre-clinical models of endurance exercise: high intensity interval training (HIIT) and voluntary wheel running (VWR). The hypothesis was that a prescribed and regimented exercise program, HIIT, would prove to be a superior training method to unregulated voluntary exercise, VWR. To investigate this hypothesis, we evaluated adult (n = 24, designated 10 m, aged 6 months at the beginning of the study, 10 months at its completion) and older adult (n = 18, designated 26 m, aging from 22 months to 26 months over the course of the study) C57BL/6 male mice. These mice were randomly assigned (with selection criteria) to a 13-week program of voluntary wheel running (VWR), high intensity interval training (HIIT), or sedentary control (SED). The functional aptitude of each mouse was determined pre- and post-training using our composite CFAB (comprehensive functional assessment battery) scoring system consisting of voluntary wheel running (volitional exercise and activity rate), treadmill (endurance), rotarod (overall motor function), grip meter (forelimb strength), and inverted cling (whole body strength/endurance). To measure sarcopenia, we tracked body mass, body composition (with EchoMRI), plantar flexor torque (in 10 m), and measured muscle wet mass post-training. Overall, adult CFAB scores decreased while body mass and percent body fat increased as they matured; however, exercise significantly mitigated the changes (p < 0.05) compared to SED. Older adults demonstrated preservation of function (CFAB) and reduced body fat (p < 0.05) compared to SED. To conclude, both types of exercise maintained physical function equally in older mice.
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Affiliation(s)
- Megan L. Pajski
- Department of Physical Therapy, East Carolina University, Greenville, NC, United States
| | - Chris Byrd
- Department of Physical Therapy, East Carolina University, Greenville, NC, United States
| | - Nainika Nandigama
- Department of Public Health, East Carolina University, Greenville, NC, United States
| | - Emily Seguin
- Department of Kinesiology, East Carolina University, Greenville, NC, United States
| | - Anna Seguin
- Department of Kinesiology, East Carolina University, Greenville, NC, United States
| | - Alyssa Fennell
- Department of Kinesiology, East Carolina University, Greenville, NC, United States
| | - Ted G. Graber
- Department of Physical Therapy, East Carolina University, Greenville, NC, United States
- Department of Kinesiology, East Carolina University, Greenville, NC, United States
- Department of Physiology, East Carolina University, Greenville, NC, United States
- East Carolina Obesity and Diabetes Institute, East Carolina University, Greenville, NC, United States
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Reho JJ, Muskus PC, Bennett DM, Grobe CC, Burnett CML, Nakagawa P, Segar JL, Sigmund CD, Grobe JL. Modulatory effects of estrous cycle on ingestive behaviors and energy balance in young adult C57BL/6J mice maintained on a phytoestrogen-free diet. Am J Physiol Regul Integr Comp Physiol 2024; 326:R242-R253. [PMID: 38284128 DOI: 10.1152/ajpregu.00273.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 01/17/2024] [Accepted: 01/22/2024] [Indexed: 01/30/2024]
Abstract
The estrous cycle is known to modify food, fluid, and electrolyte intake behaviors and energy homeostasis in various species, in part through fluctuations in estrogen levels. Simultaneously, commonly commercially available rodent dietary formulations greatly vary in soy protein content, and thereby the delivery of biologically active phytoestrogens. To explore the interactions among the estrous cycle, sodium, fluid, and caloric seeking behaviors, and energy homeostasis, young adult C57BL/6J female mice were maintained on a soy protein-free 2920x diet and provided water, or a choice between water and 0.15 mol/L NaCl drink solution. Comprehensive metabolic phenotyping was performed using a multiplexed Promethion (Sable Systems International) system, and estrous stages were determined via daily vaginal cytology. When provided food and water, estrous cycling had no major modulatory effects on intake behaviors or energy balance. When provided a saline solution drink choice, significant modulatory effects of the transition from diestrus to proestrus were observed upon fluid intake patterning, locomotion, and total energy expenditure. Access to saline increased total daily sodium consumption and aspects of energy expenditure, but these effects were not modified by the estrous stage. Collectively, these results indicate that when supplied a phytoestrogen-free diet, the estrous cycle has minor modulatory effects on ingestive behaviors and energy balance in C57BL/6J mice that are sensitive to sodium supply.NEW & NOTEWORTHY When provided a phytoestrogen-free diet, the estrous cycle had very little effect on food and water intake, physical activity, or energy expenditure in C57BL/6J mice. In contrast, when provided an NaCl drink in addition to food and water, the estrous cycle was associated with changes in intake behaviors and energy expenditure. These findings highlight the complex interactions among estrous cycling, dietary formulation, and nutrient presentation upon ingestive behaviors and energy homeostasis in mice.
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Affiliation(s)
- John J Reho
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
- Comprehensive Rodent Metabolic Phenotyping Core, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
| | - Patricia C Muskus
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
| | - Darby M Bennett
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
| | - Connie C Grobe
- Department of Pediatrics, Division of Neonatology, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
| | - Colin M L Burnett
- Department of Medicine/Division of Cardiovascular Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
| | - Pablo Nakagawa
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
- Neuroscience Research Center, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
| | - Jeffrey L Segar
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
- Department of Pediatrics, Division of Neonatology, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
| | - Curt D Sigmund
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
- Neuroscience Research Center, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
| | - Justin L Grobe
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
- Comprehensive Rodent Metabolic Phenotyping Core, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
- Neuroscience Research Center, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
- Department of Biomedical Engineering, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
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Ozmen O, Sababoglu E, Ozyildiz Z, Milletsever A, Okuyucu G. Ameliorative and Disinfection Effects of Ultraviolet-C Radiation on Experimentally Induced and Infected Skin Wounds: A Mice Model Study. INT J LOW EXTR WOUND 2024; 23:116-123. [PMID: 34516276 DOI: 10.1177/15347346211041869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Only ultraviolet-C (UV-C) from UV lights, which are emitted by the sun and absorbed by the atmosphere's ozone layer, does not reach the Earth's surface. UV-C is a powerful disinfection method that is commonly used to sterilize fluids, air, and surfaces. There is a little knowledge of the effects of UV-C radiation on living bodies. The purpose of this study is to examine the ameliorative effect of UV-C on skin lesions in mice that have been experimentally created and infected with Staphylococcus aureus, Staphylococcus epidermidis, and Streptococcus sp. In total, 32 mice were used, and 4 mm skin defects were created and lesions infected with bacteria. Half of the mice in each group were treated with 254 nm UV-C twice a day for 4 days before being euthanatized. Blood samples were collected for hematological analysis, while skin samples were collected for microbiological, pathological, and immunohistochemical examinations. In addition, pathological examinations were performed on visceral organ samples. UV-C treatment caused rapid healing and complete or significant disinfection of skin lesions. Moreover, UV-C treatment reduced caspase-3 expressions in lesioned areas, according to immunochemistry. There were no pathological findings in visceral organs as a result of UV-C treatment. This study found that UV-C can be used to treat and disinfect infected skin lesions in short period and repeated doses.
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Affiliation(s)
- Ozlem Ozmen
- Burdur Mehmet Akif Ersoy University, Burdur, Turkey
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Ye Z, Xiong H, Huang L, Zhao Q, Xiong Z, Zhang H, Zhang W. Mechanisms underlying the combination effect of arsenite and high-fat diet on aggravating liver injury in mice. Environ Toxicol 2024; 39:1323-1334. [PMID: 37955338 DOI: 10.1002/tox.24037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Revised: 09/23/2023] [Accepted: 10/31/2023] [Indexed: 11/14/2023]
Abstract
Arsenic (As) is a highly toxic metalloid that can be found in insufficiently purified drinking water and exerts adverse effects on the physiology of living organisms that can negatively affect human health after subchronic exposure, causing several diseases, such as liver damage. A high-fat diet, which is increasing in frequency worldwide, can aggravate hepatic pathology. However, the mechanisms behind liver injury caused by the combinatory effects of As exposure and a high-fat diet remain unclear. In this study, we investigated such underlying mechanisms by focusing on three different aspects: As biotransformation, pathological liver damage, and differential expression of signaling pathway components. We employed mice that were fed a regular diet or a high-fat diet and exposed them to a range of arsenite concentrations (As(III), 0.05-50 mg/L) for 12 weeks. Our results showed that a high-fat diet increased the absorption of As into the liver and enhanced liver toxicity, which became progressively more severe as the As concentration increased. Co-exposure to a high-fat diet and As(III) activated PI3K/AKT and PPAR signaling as well as fatty acid metabolism pathways. In addition, the expression of proteins related to lipid cell function, lipid metabolism, and the regulation of body weight was also affected. Our study provides insights into the mechanisms that contribute to liver injury from subchronic combinatory exposure to As and a high-fat diet and showcases the importance of a healthy lifestyle, which may be of particular benefit to people living in areas with high As(III) concentrations, as a means to reduce or prevent aggravated liver damage.
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Affiliation(s)
- Zijun Ye
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China
| | - Haiyan Xiong
- Key Laboratory of the Coastal and Wetland Ecosystems, Ministry of Education, College of Environment and Ecology, Xiamen University, Xiamen, China
| | - Liping Huang
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China
| | - Qianyu Zhao
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China
| | - Zhu Xiong
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China
| | - Hongguo Zhang
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China
| | - Wei Zhang
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China
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Tsvetkov D, Schleifenbaum J, Wang Y, Kassmann M, Polovitskaya MM, Ali M, Schütze S, Rothe M, Luft FC, Jentsch TJ, Gollasch M. KCNQ5 Controls Perivascular Adipose Tissue-Mediated Vasodilation. Hypertension 2024; 81:561-571. [PMID: 38354270 DOI: 10.1161/hypertensionaha.123.21834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 12/12/2023] [Indexed: 02/16/2024]
Abstract
BACKGROUND Small arteries exhibit resting tone, a partially contracted state that maintains arterial blood pressure. In arterial smooth muscle cells, potassium channels control contraction and relaxation. Perivascular adipose tissue (PVAT) has been shown to exert anticontractile effects on the blood vessels. However, the mechanisms by which PVAT signals small arteries, and their relevance remain largely unknown. We aimed to uncover key molecular components in adipose-vascular coupling. METHODS A wide spectrum of genetic mouse models targeting Kcnq3, Kcnq4, and Kcnq5 genes (Kcnq3-/-, Kcnq4-/-, Kcnq5-/-, Kcnq5dn/dn, Kcnq4-/-/Kcnq5dn/dn, and Kcnq4-/-/Kcnq5-/-), telemetry blood pressure measurements, targeted lipidomics, RNA-Seq profiling, wire-myography, patch-clamp, and sharp-electrode membrane potential measurements was used. RESULTS We show that PVAT causes smooth muscle cell KV7.5 family of voltage-gated potassium (K+) channels to hyperpolarize the membrane potential. This effect relaxes small arteries and regulates blood pressure. Oxygenation of polyunsaturated fats generates oxylipins, a superclass of lipid mediators. We identified numerous oxylipins released by PVAT, which potentiate vasodilatory action in small arteries by opening smooth muscle cell KV7.5 family of voltage-gated potassium (K+) channels. CONCLUSIONS Our results reveal a key molecular function of the KV7.5 family of voltage-gated potassium (K+) channels in the adipose-vascular coupling, translating PVAT signals, particularly oxylipins, to the central physiological function of vasoregulation. This novel pathway opens new therapeutic perspectives.
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Affiliation(s)
- Dmitry Tsvetkov
- Department of Internal Medicine and Geriatrics, University Medicine Greifswald, Germany (D.T., M.K., M.A., M.G.)
| | - Johanna Schleifenbaum
- Institute of Vegetative Physiology, Charité-Universitätsmedizin Berlin, Germany (J.S.)
| | - Yibin Wang
- Experimental and Clinical Research Center, a joint cooperation between the Charité Medical Faculty and the Max Delbrück Center for Molecular Medicine, Berlin, Germany (Y.W., F.C.L.)
| | - Mario Kassmann
- Department of Internal Medicine and Geriatrics, University Medicine Greifswald, Germany (D.T., M.K., M.A., M.G.)
| | - Maya M Polovitskaya
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie, Berlin, Germany (M.M.P., S.S., T.J.J.)
- Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany (M.M.P., S.S., T.J.J.)
| | - Mohamed Ali
- Department of Internal Medicine and Geriatrics, University Medicine Greifswald, Germany (D.T., M.K., M.A., M.G.)
| | - Sebastian Schütze
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie, Berlin, Germany (M.M.P., S.S., T.J.J.)
- Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany (M.M.P., S.S., T.J.J.)
| | | | - Friedrich C Luft
- Experimental and Clinical Research Center, a joint cooperation between the Charité Medical Faculty and the Max Delbrück Center for Molecular Medicine, Berlin, Germany (Y.W., F.C.L.)
| | - Thomas J Jentsch
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie, Berlin, Germany (M.M.P., S.S., T.J.J.)
- Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany (M.M.P., S.S., T.J.J.)
- NeuroCure Cluster of Excellence, Charité-Universitätsmedizin Berlin, Berlin, Germany (T.J.J.)
| | - Maik Gollasch
- Department of Internal Medicine and Geriatrics, University Medicine Greifswald, Germany (D.T., M.K., M.A., M.G.)
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Luo J, Chen M, Ji H, Su W, Song W, Zhang D, Su W, Liu S. Hypolipidemic and Anti-Obesity Effect of Anserine on Mice Orally Administered with High-Fat Diet via Regulating SREBP-1, NLRP3, and UCP-1. Mol Nutr Food Res 2024; 68:e2300471. [PMID: 38400696 DOI: 10.1002/mnfr.202300471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 10/23/2023] [Indexed: 02/25/2024]
Abstract
To investigate the efficacy of anserine on antiobesity, C57BL/6 mice are orally administered with a high-fat diet (HFD) and different doses of anserine (60, 120, and 240 mg/kg/day) for 16 weeks. Body weight, lipid, and epididymal fat content in mice are measured, and their liver damage is observed. The results display that the body weight, epididymal fat content, and low-density lipoprotein cholesterol (LDL-C) content in anserine groups are decreased by 4.36-18.71%, 7.57-35.12%, and 24.32-44.40%, respectively. To further investigate the antiobesity mechanism of anserine, the expression of SREBP-1, NLRP3, NF-κB p65 (p65), and p-NF-κB p65 (p-p65) proteins in the liver and peroxisome proliferator-activated receptor gamma coactivator 1α (PGC1-α) and UCP-1 proteins in brown adipose tissue (BAT) is analyzed by Western blot. Results show that anserine can significantly decrease the expression of the NLRP3, p65, p-p65, and the SREBP-1 proteins and increase the expression of the PGC1-α and UCP-1 proteins. This study demonstrates that anserine lowered blood lipids and prevented obesity; its antiobesity mechanism may be related to the activation of brown fat by inflammation.
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Affiliation(s)
- Jing Luo
- College of Food Science and Technology, Guangdong Ocean University, Zhanjiang, 524088, P. R. China
| | - Ming Chen
- College of Food Science and Technology, Guangdong Ocean University, Zhanjiang, 524088, P. R. China
| | - Hongwu Ji
- College of Food Science and Technology, Guangdong Ocean University, Zhanjiang, 524088, P. R. China
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Zhanjiang, 524088, P. R. China
- Guangdong Province Engineering Laboratory for Marine Biological Products, Zhanjiang, 524088, P. R. China
- Guangdong Provincial Engineering Technology Research Center of Marine Food, Zhanjiang, 524088, P. R. China
- Key Laboratory of Advanced Processing of Aquatic, Product of Guangdong Higher Education Institution, Zhanjiang, 524088, P. R. China
| | - Weifeng Su
- College of Food Science and Technology, Guangdong Ocean University, Zhanjiang, 524088, P. R. China
| | - Wenkui Song
- College of Food Science and Technology, Guangdong Ocean University, Zhanjiang, 524088, P. R. China
| | - Di Zhang
- College of Food Science and Technology, Guangdong Ocean University, Zhanjiang, 524088, P. R. China
| | - Weiming Su
- College of Food Science and Technology, Guangdong Ocean University, Zhanjiang, 524088, P. R. China
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Zhanjiang, 524088, P. R. China
| | - Shucheng Liu
- College of Food Science and Technology, Guangdong Ocean University, Zhanjiang, 524088, P. R. China
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Zhanjiang, 524088, P. R. China
- Guangdong Province Engineering Laboratory for Marine Biological Products, Zhanjiang, 524088, P. R. China
- Guangdong Provincial Engineering Technology Research Center of Marine Food, Zhanjiang, 524088, P. R. China
- Key Laboratory of Advanced Processing of Aquatic, Product of Guangdong Higher Education Institution, Zhanjiang, 524088, P. R. China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian, 116034, P. R. China
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Wang G, Jiang Z, Song Y, Xing Y, He S, Boomi P. Gut microbiota contribution to selenium deficiency-induced gut-liver inflammation. Biofactors 2024; 50:311-325. [PMID: 37676478 DOI: 10.1002/biof.2006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 08/05/2023] [Indexed: 09/08/2023]
Abstract
There is limited knowledge about the factors that drive gut-liver axis changes after selenium (Se) deficiency-induced gut or liver injuries. Thus, we tested Se deficiency in mice to determine its effects on intestinal bacterial balance and whether it induced liver injury. Serum Se concentration, lipopolysaccharide (LPS) level, and liver injury biomarkers were tested using a biochemical method, while pathological changes in the liver and jejunum were observed via hematoxylin and eosin stain, and a fluorescence spectrophotometer was used to evaluate intestinal permeability. Tight junction (TJ)-related and toll-like receptor (TLR) signaling-related pathway genes and proteins were tested using quantitative polymerase chain reaction, western blotting, immunohistochemistry, and 16S ribosomal ribonucleic acid gene-targeted sequencing of jejunum microorganisms. Se deficiency significantly decreased glutathione peroxidase activity and disrupted the intestinal flora, with the most significant effect being a decrease in Lactobacillus reuteri. The expression of TJ-related genes and proteins decreased significantly with increased treatment time, whereas supplementation with Se, fecal microbiota transplantation, or L. reuteri reversed these decreases. Signs of liver injury and LPS content were significantly increased after intestinal flora imbalance or jejunum injury, and the levels of TLR signaling-related genes were significantly increased. The results indicated that Se deficiency disrupted the microbiota balance, decreased the expression of intestinal TJ factors, and increased intestinal permeability. By contrast, LPS increased due to a bacterial imbalance, which may induce inflammatory liver injury via the TLR4 signaling pathway.
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Affiliation(s)
- Guodong Wang
- Henan Joint International Research Laboratory of Veterinary Biologics Research and Application, Anyang Institute of Technology, Anyang, Henan, China
| | - Zhihui Jiang
- Henan Joint International Research Laboratory of Veterinary Biologics Research and Application, Anyang Institute of Technology, Anyang, Henan, China
| | - Yuwei Song
- Henan Joint International Research Laboratory of Veterinary Biologics Research and Application, Anyang Institute of Technology, Anyang, Henan, China
| | - Yueteng Xing
- Henan Joint International Research Laboratory of Veterinary Biologics Research and Application, Anyang Institute of Technology, Anyang, Henan, China
| | - Simin He
- Henan Joint International Research Laboratory of Veterinary Biologics Research and Application, Anyang Institute of Technology, Anyang, Henan, China
| | - P Boomi
- Department of Bioinformatics, Alagappa University, Karaikudi, Tamil Nadu, India
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Watkins-Chow DE, Incao AA, Rivas C, Elliott G, Garrett LJ, Pavan WJ. The MFSD12 p.Tyr182His common variant is sufficient to alter mouse agouti coat color. Pigment Cell Melanoma Res 2024; 37:259-264. [PMID: 37874775 DOI: 10.1111/pcmr.13144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 09/26/2023] [Accepted: 10/11/2023] [Indexed: 10/26/2023]
Abstract
MFSD12 functions as a transmembrane protein required for import of cysteine into melanosomes and lysosomes. The MFSD12 locus has been associated with phenotypic variation in skin color across African, Latin American, and East Asian populations. The frequency of a particular MFSD12 coding variant, rs2240751 (MAF = 0.08), has been reported to correlate with solar radiation and occur at highest frequency in Peruvian (PEL MAF = 0.48) and Han Chinese (CHB MAF = 0.40) populations, suggesting it could be causative for associated phenotypic variation in skin color. We have generated a mouse knock-in allele, Mfsd12Y182H , to model the human missense p.Tyr182His human variant. We demonstrate that the variant transcript is stably expressed and that agouti mice homozygote for the variant allele are viable with an altered coat color. This in vivo data confirms that the MFSD12 p.Tyr182His variant functions as a hypomorphic allele sufficient to alter mammalian pigmentation.
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Affiliation(s)
- Dawn E Watkins-Chow
- Genomics, Development and Disease Section, Genetic Disease Research Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Arturo A Incao
- Genomics, Development and Disease Section, Genetic Disease Research Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Cecelia Rivas
- Embryonic Stem Cell and Transgenic Mouse Core, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Gene Elliott
- Embryonic Stem Cell and Transgenic Mouse Core, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Lisa J Garrett
- Embryonic Stem Cell and Transgenic Mouse Core, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - William J Pavan
- Genomics, Development and Disease Section, Genetic Disease Research Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, USA
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De Clerck M, Manguin M, Henkous N, d’Almeida MN, Beracochea D, Mons N. Chronic alcohol-induced long-lasting working memory deficits are associated with altered histone H3K9 dimethylation in the prefrontal cortex. Front Behav Neurosci 2024; 18:1354390. [PMID: 38495426 PMCID: PMC10941761 DOI: 10.3389/fnbeh.2024.1354390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 02/19/2024] [Indexed: 03/19/2024] Open
Abstract
Introduction Epigenetic modifications have emerged as key contributors to the enduring behavioral, molecular and epigenetic neuroadaptations during withdrawal from chronic alcohol exposure. The present study investigated the long-term consequences of chronic alcohol exposure on spatial working memory (WM) and associated changes of transcriptionally repressive histone H3 lysine 9 dimethylation (H3K9me2) in the prefrontal cortex (PFC). Methods Male C57BL/6 mice were allowed free access to either 12% (v/v) ethanol for 5 months followed by a 3-week abstinence period or water. Spatial WM was assessed through the spontaneous alternation T-maze test. Alcoholic and water mice received daily injections of GABAB agonist baclofen or saline during alcohol fading and early withdrawal. Global levels of histone modifications were determined by immunohistochemistry. Results Withdrawal mice displayed WM impairments along with reduced prefrontal H3K9me2 levels, compared to water-drinking mice. The withdrawal-induced decrease of H3K9me2 occurred concomitantly with increased level of permissive H3K9 acetylation (H3K9ac) in the PFC. Baclofen treatment rescued withdrawal-related WM deficits and fully restored prefrontal H3K9me2 and H3K9ac. Alcohol withdrawal induced brain region-specific changes of H3K9me2 and H3K9ac after testing, with significant decreases of both histone marks in the dorsal hippocampus and no changes in the amygdala and dorsal striatum. Furthermore, the magnitude of H3K9me2 in the PFC, but not the hippocampus, significantly and positively correlated with individual WM performances. No correlation was observed between H3K9ac and behavioral performance. Results also indicate that pre-testing intraperitoneal injection of UNC0642, a selective inhibitor of histone methyltransferase G9a responsible for H3K9me2, led to WM impairments in water-drinking and withdrawal-baclofen mice. Collectively, our results demonstrate that alcohol withdrawal induced brain-region specific alterations of H3K9me2 and H3K9ac, an effect that persisted for at least three weeks after cessation of chronic alcohol intake. Conclusion The findings suggest a role for long-lasting decreased H3K9me2 specifically in the PFC in the persistent WM impairments related to alcohol withdrawal.
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Singh A, Ghosh R, Asuru TR, Prajapat SK, Joshi G, Gaur KK, Shrimali NM, Ojha A, Vikram NK, Poncz M, Kalia M, Guchhait P. Inhibition of cellular activation induced by platelet factor 4 via the CXCR3 pathway ameliorates Japanese encephalitis and dengue viral infections. J Thromb Haemost 2024; 22:818-833. [PMID: 38029855 DOI: 10.1016/j.jtha.2023.11.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 11/05/2023] [Accepted: 11/10/2023] [Indexed: 12/01/2023]
Abstract
BACKGROUND Activated platelets secrete platelet factor 4 (PF4), which contributes to viral pathogenesis. Recently, we reported the proviral role of PF4 in replication of closely related flaviviruses, Japanese encephalitis virus (JEV) and dengue virus (DENV). OBJECTIVES This study aimed to investigate the detailed mechanism of PF4-mediated virus replication. METHODS PF4-/- or wild-type (WT) mice were infected with JEV, and host defense mechanisms, including autophagic/interferon (IFN) responses, were assessed. WT mice were pretreated with the CXCR3 antagonist AMG487 that inhibits PF4:CXCR3 pathway. This pathway was tested in PF4-/- monocytes infected with DENV or in monocytes isolated from patients with DENV infection. RESULTS PF4-/- mice infected with JEV showed reduced viral load and improved brain inflammation and survival. PF4-/- mice synthesized more IFN-α/β with higher expression of phosphorylated IRF3 in the brain. PF4 treatment decreased IRF-3/7/9 and IFN-α/β expression and suppressed autophagic LC3-II flux and lysosomal degradation of viral proteins in JEV-infected cells. PF4 increased the expression of P-mTOR, P-p38, and P-ULK1Ser757 and decreased expression of LC3-II. Decreased autophagosome-lysosome fusion in turn promoted DENV2 replication. The above processes were reversed by AMG487. Uninfected PF4-/- monocytes showed elevated LC3-II and autophagosome-lysosome fusion. Microglia of JEV-infected PF4-/- mice exhibited elevated LC3-II inversely related to viral load. Similarly, monocytes from PF4-/- mice showed reduced infection by DENV2. In patients with DENV infection, higher plasma PF4 and viral load were inversely correlated with LC3-II, LAMP-1, and lysosomal degradation of DENV-NS1 in monocytes during the febrile phase. CONCLUSION These studies suggest that PF4 deficiency or inhibition of the PF4:CXCR3 pathway prevents JEV and DENV infection. The studies also highlight the PF4:CXCR3 axis as a potential target to develop treatment regimens against flaviviruses.
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Affiliation(s)
- Anamika Singh
- Regional Centre for Biotechnology, National Capital Region Biotech Science Cluster, Faridabad, Haryana, India
| | - Riya Ghosh
- Regional Centre for Biotechnology, National Capital Region Biotech Science Cluster, Faridabad, Haryana, India
| | - Tejeswara Rao Asuru
- Regional Centre for Biotechnology, National Capital Region Biotech Science Cluster, Faridabad, Haryana, India
| | - Surendra K Prajapat
- Regional Centre for Biotechnology, National Capital Region Biotech Science Cluster, Faridabad, Haryana, India
| | - Garima Joshi
- Regional Centre for Biotechnology, National Capital Region Biotech Science Cluster, Faridabad, Haryana, India
| | - Kishan K Gaur
- Regional Centre for Biotechnology, National Capital Region Biotech Science Cluster, Faridabad, Haryana, India
| | - Nishith M Shrimali
- Regional Centre for Biotechnology, National Capital Region Biotech Science Cluster, Faridabad, Haryana, India
| | - Amrita Ojha
- Regional Centre for Biotechnology, National Capital Region Biotech Science Cluster, Faridabad, Haryana, India; Department of Medicine, Division of Infectious Diseases and Geographic Medicine, Stanford University, Stanford, California, USA
| | - Naval K Vikram
- Division of Infectious Disease, All India Institute of Medical Sciences, New Delhi, India
| | - Mortimer Poncz
- Division of Hematology, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Manjula Kalia
- Regional Centre for Biotechnology, National Capital Region Biotech Science Cluster, Faridabad, Haryana, India
| | - Prasenjit Guchhait
- Regional Centre for Biotechnology, National Capital Region Biotech Science Cluster, Faridabad, Haryana, India.
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Izadi S, Abdolrezaei M, Soukhaklari R, Moosavi M. Memory impairment induced by aluminum nanoparticles is associated with hippocampal IL-1 and IBA-1 upregulation in mice. Neurol Res 2024; 46:284-290. [PMID: 38145565 DOI: 10.1080/01616412.2023.2298137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 12/18/2023] [Indexed: 12/27/2023]
Abstract
OBJECTIVES Increasing evidence indicates a link between aluminum (Al) intake and Alzheimer's disease (AD). The main entry of Al into the human body is through oral route, and in the digestive tract, under the influence of the pH change, Al can be transformed into Al nanoparticles (Al-NP). However, studies related to the effect of Al-NP on the brain are limited and need further investigation. Neuro-inflammation is considered as one of the principal features of AD. Microglial activation and expression of the inflammatory cytokine IL-1β (interleukin-1β) in the brain have been used as hallmarks of brain inflammation. Therefore, in the present study, the hippocampal levels of ionized calcium-binding adaptor molecule 1 (IBA-1), as the marker of microglia activation, and IL-1β were assessed. METHODS Adult male NMRI mice were treated with Al-NP (5 or 10 mg/kg) for 5 days. A novel object recognition (NOR) test was used to assess memory. Following cognitive assessments, the hippocampal tissues were isolated to analyze the levels of IL-1β and IBA-1 as well as beta actin proteins using western blot technique. RESULTS Al-NP in both doses of 5 and 10 mg/kg impaired NOR memory in mice. In addition, Al-NP increased IL-1β and IBA-1 in the hippocampus. DISCUSSION These findings indicate that the memory impairing effect of Al-NP coincides with hippocampal inflammation. According to the proposed relationship between AD and Al toxicity, this study can increase the knowledge about the toxic effects of Al-NP and highlight the need to limit the use of this nanoparticle.
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Affiliation(s)
- Sadegh Izadi
- Clinical Neurology Research Center and Department of Neurology, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Maryam Abdolrezaei
- Clinical Neurology Research Center and Department of Neurology, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Roksana Soukhaklari
- Shiraz Neuroscience Research Centre, Shiraz University of Medical Sciences, Shiraz, Iran
- Department of Cardiology, Medical University of Graz, Graz, Austria
| | - Maryam Moosavi
- Nanomedicine and Nanobiology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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Li Y, Cui WW, Yang ZF, Liu WH, Bian MW, Deng J, Wang T. Influence of GPRC5A-Regulated ABCB1 Expression on Lung Adenocarcinoma Proliferation. Chin Med Sci J 2024; 39:9-18. [PMID: 38426412 DOI: 10.24920/004216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
Objective Aberrant expression of ATP binding cassette subfamily B member 1 (ABCB1) plays a key role in several cancers. However, influence of G protein coupled receptor family C group 5 type A (GPRC5A)-regulated ABCB1 expression on lung adenocarcinoma proliferation remains unclear. Therefore, this study investigated the effect of GPRC5A regulated ABCB1 expression on the proliferation of lung adenocarcinoma. Methods ABCB1 expressions in lung adenocarcinoma cell lines, human lung adenocarcinoma tissues, and tracheal epithelial cells and lung tissues of GPRC5A knockout mice and wild-type mice were analyzed with RT-PCR, Western blot, or immunohistochemical analysis. Cell counting kit-8 assay was performed to analyze the sensitivity of tracheal epithelial cells from GPRC5A knockout mice to chemotherapeutic agents. Subcutaneous tumor formation assay was performed to confirm whether down-regulation of ABCB1 could inhibit the proliferation of lung adenocarcinoma in vivo. To verify the potential regulatory relationship between GPRC5A and ABCB1, immunofluorescence and immunoprecipitation assays were performed. Results ABCB1 expression was up-regulated in lung adenocarcinoma cell lines and human lung adenocarcinoma tissues. ABCB1 expression in the tracheal epithelial cells and lung tissues of GPRC5Adeficient mice was higher than that in the wild type mice. Tracheal epithelial cells of GPRC5A knockout mice were much more sensitive to tariquidar and doxorubicin than those of GPRC5A wild type mice. Accordingly, 28 days after injection of the transplanted cells, the volume and weight of lung tumor in ABCB1knockout cell-transplanted GPRC5A-/-C57BL/6 mice were significantly smaller than those in wild type cell-transplanted mice (P= 0.0043, P= 0.0060). Furthermore, immunofluorescence and immunoprecipitation assays showed that GPRC5A regulated ABCB1 expression by direct binding.Conclusion GPRC5A reduces lung adenocarcinoma proliferation via inhibiting ABCB1 expression. The pathway by which GPRC5A regulates ABCB1 expression needs to be investigated.
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Affiliation(s)
- Yun Li
- Department of Physiology, School of Basic Medical Sciences, Shandong Second Medical University, Weifang 261021, Shandong, China
| | - Wen-Wen Cui
- Department of Physiology, School of Basic Medical Sciences, Shandong Second Medical University, Weifang 261021, Shandong, China
| | - Zhong-Fa Yang
- Department of Physiology, School of Basic Medical Sciences, Shandong Second Medical University, Weifang 261021, Shandong, China
| | - Wen-Hao Liu
- Department of Physiology, School of Basic Medical Sciences, Shandong Second Medical University, Weifang 261021, Shandong, China
| | - Mao-Wang Bian
- Department of Physiology, School of Basic Medical Sciences, Shandong Second Medical University, Weifang 261021, Shandong, China
| | - Jiong Deng
- Medical Research Center, Affiliated Hospital of Binzhou Medical University, Binzhou 256600, Shandong, China
| | - Tong Wang
- Department of Physiology, School of Basic Medical Sciences, Shandong Second Medical University, Weifang 261021, Shandong, China
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Nicy V, Gurusubramanian G, Roy VK. Assessment of copper nanoparticles treatment on male accessory reproductive organs and epididymis in a mouse model: A morphological and biochemical study. J Exp Zool A Ecol Integr Physiol 2024; 341:138-150. [PMID: 38047873 DOI: 10.1002/jez.2768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 11/02/2023] [Accepted: 11/21/2023] [Indexed: 12/05/2023]
Abstract
Although the usage of nanoparticles has expanded substantially in recent years, and it causes the detrimental effect on the various organs. CuNPs are widely used in commercial applications. There has been minimal investigation into the possibly harmful effects of CuNPs on the accessory reproductive organs. Thus, the present study aimed to investigate the effect of CuNPs on the male reproductive organs like epididymis, vas deferens, seminal vesicle and prostate of mice. The mice were exposed orally to CuNPs at three doses 10, 100, and 200 mg/kg for 70 days. Our results showed that the organs index of only vas deferens and prostate reduced at 200 mg/kg group compared to the control. However, the histological study showed degenerative changes in the epididymis at higher doses like distortion in the tubules. The sperm parameters were also decreased in the 200 mg/kg CuNPs group. The vas deferens in 100 and 200 mg/kg treatment groups exhibited detachment of luminal epithelium and with a few or no spermatozoa in the higher dose group. The seminal vesicle and prostate also showed degenerative changes like atrophy, hyperplasia, and scant secretary materials. Furthermore, CuNPs also increased the oxidative stress and decreased antioxidant enzymes in vas deferens and seminal vesicles at higher dose. Caput epididymis showed decreased GPx enzymes in all the groups. However, MDA and GPx in corpus, cauda, and prostate did not show any significant variations among all the groups. In conclusion, our results suggest that CuNPs can manifest the detrimental effect of the male accessory organs and epididymis in a dose and tissue dependent manner. Since, detrimental effects were observed only at higher dose, thus, uses of CuNPs would be safe for reproductive organs at lower dose, even for the prolonged duration.
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Affiliation(s)
- Vanrohlu Nicy
- Department of Zoology, Mizoram University, Aizawl, Mizoram, India
| | | | - Vikas K Roy
- Department of Zoology, Mizoram University, Aizawl, Mizoram, India
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79
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Du Y, Wang J, Zhang J, Li N, Li G, Liu X, Lin Y, Wang D, Kang K, Bian L, Zhao X. Intracerebral hemorrhage-induced brain injury in mice: The role of peroxiredoxin 2-Toll-like receptor 4 inflammatory axis. CNS Neurosci Ther 2024; 30:e14681. [PMID: 38516845 PMCID: PMC10958402 DOI: 10.1111/cns.14681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 02/02/2024] [Accepted: 02/08/2024] [Indexed: 03/23/2024] Open
Abstract
BACKGROUND Peroxiredoxin 2 (Prx2), an intracellular protein that regulates redox reactions, released from red blood cells is involved in inflammatory brain injury after intracerebral hemorrhage (ICH). Toll-like receptor 4 (TLR4) may be crucial in this process. This study investigated the role of the Prx2-TLR4 inflammatory axis in brain injury following experimental ICH in mice. METHODS First, C57BL/6 mice received an intracaudate injection of autologous arterial blood or saline and their brains were harvested on day 1 to measure Prx2 levels. Second, mice received an intracaudate injection of either recombinant mouse Prx2 or saline. Third, the mice were co-injected with autologous arterial blood and conoidin A, a Prx2 inhibitor, or vehicle. Fourth, the mice received a Prx2 injection and were treated with TAK-242, a TLR4 antagonist, or saline (intraperitoneally). Behavioral tests, magnetic resonance imaging, western blot, immunohistochemistry/immunofluorescence staining, and RNA sequencing (RNA-seq) were performed. RESULTS Brain Prx2 levels were elevated after autologous arterial blood injection. Intracaudate injection of Prx2 caused brain swelling, microglial activation, neutrophil infiltration, neuronal death, and neurological deficits. Co-injection of conoidin A attenuated autologous arterial blood-induced brain injury. TLR4 was expressed on the surface of microglia/macrophages and neutrophils and participated in Prx2-induced inflammation. TAK-242 treatment attenuated Prx2-induced inflammation and neurological deficits. CONCLUSIONS Prx2 can cause brain injury following ICH through the TLR4 pathway, revealing the Prx2-TLR4 inflammatory axis as a potential therapeutic target.
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Affiliation(s)
- Yang Du
- Department of NeurologyBeijing Tiantan Hospital, Capital Medical UniversityBeijingChina
- China National Clinical Research Center for Neurological DiseasesCapital Medical UniversityBeijingChina
- Laboratory for Clinical MedicineCapital Medical UniversityBeijingChina
| | - Jinjin Wang
- Department of NeurologyBeijing Tiantan Hospital, Capital Medical UniversityBeijingChina
- China National Clinical Research Center for Neurological DiseasesCapital Medical UniversityBeijingChina
- Laboratory for Clinical MedicineCapital Medical UniversityBeijingChina
| | - Jia Zhang
- Department of NeurologyBeijing Tiantan Hospital, Capital Medical UniversityBeijingChina
- China National Clinical Research Center for Neurological DiseasesCapital Medical UniversityBeijingChina
- Laboratory for Clinical MedicineCapital Medical UniversityBeijingChina
| | - Ning Li
- Department of NeurologyBeijing Tiantan Hospital, Capital Medical UniversityBeijingChina
- China National Clinical Research Center for Neurological DiseasesCapital Medical UniversityBeijingChina
- Laboratory for Clinical MedicineCapital Medical UniversityBeijingChina
| | - Guangshuo Li
- Department of NeurologyBeijing Tiantan Hospital, Capital Medical UniversityBeijingChina
- China National Clinical Research Center for Neurological DiseasesCapital Medical UniversityBeijingChina
- Laboratory for Clinical MedicineCapital Medical UniversityBeijingChina
| | - Xinmin Liu
- Department of NeurologyBeijing Tiantan Hospital, Capital Medical UniversityBeijingChina
- China National Clinical Research Center for Neurological DiseasesCapital Medical UniversityBeijingChina
- Laboratory for Clinical MedicineCapital Medical UniversityBeijingChina
| | - Yijun Lin
- Department of NeurologyBeijing Tiantan Hospital, Capital Medical UniversityBeijingChina
- China National Clinical Research Center for Neurological DiseasesCapital Medical UniversityBeijingChina
- Laboratory for Clinical MedicineCapital Medical UniversityBeijingChina
| | - Dandan Wang
- Department of NeurologyBeijing Tiantan Hospital, Capital Medical UniversityBeijingChina
- China National Clinical Research Center for Neurological DiseasesCapital Medical UniversityBeijingChina
- Laboratory for Clinical MedicineCapital Medical UniversityBeijingChina
| | - Kaijiang Kang
- Department of NeurologyBeijing Tiantan Hospital, Capital Medical UniversityBeijingChina
- China National Clinical Research Center for Neurological DiseasesCapital Medical UniversityBeijingChina
- Laboratory for Clinical MedicineCapital Medical UniversityBeijingChina
| | - Liheng Bian
- Department of NeurologyBeijing Tiantan Hospital, Capital Medical UniversityBeijingChina
- China National Clinical Research Center for Neurological DiseasesCapital Medical UniversityBeijingChina
- Laboratory for Clinical MedicineCapital Medical UniversityBeijingChina
| | - Xingquan Zhao
- Department of NeurologyBeijing Tiantan Hospital, Capital Medical UniversityBeijingChina
- China National Clinical Research Center for Neurological DiseasesCapital Medical UniversityBeijingChina
- Laboratory for Clinical MedicineCapital Medical UniversityBeijingChina
- Research Unit of Artificial Intelligence in Cerebrovascular DiseaseChinese Academy of Medical SciencesBeijingChina
- Center of Stroke, Beijing Institute for Brain DisordersBeijingChina
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Shareef SM, Khaleel RA, Maryoosh TM. Nephroprotective effect of cranberry ( Vaccinium oxycoccos) in streptozocin-induced diabetic nephropathy in mice. Drug Metab Pers Ther 2024; 39:35-45. [PMID: 38469711 DOI: 10.1515/dmpt-2023-0092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Accepted: 02/12/2024] [Indexed: 03/13/2024]
Abstract
OBJECTIVES Diabetic nephropathy is a chief reason of mortality particularly in individuals with renal dysfunction. The current research was aimed to assess the nephroprotective portion of Vaccinium oxycoccos toward mice diabetic nephropathy induced by streptozotocin (STZ). V. oxycoccos was purchased and used for hydroalcoholic extraction. METHODS Sixty male mice were subjected to STZ-intraperitoneal injection (45 mg/kg). After diabetes induction, mice were divided into five groups of diabetic control (received only STZ), non-diabetic control (received only citrate buffer), two V. oxycoccos treatment (received V. oxycoccos extract (200 and 400 mg/kg) oral daily by gavage), and metformin treatment (received metformin (500 mg/kg) oral daily by gavage). Glucose and weight of mice were checked weekly. RESULTS After 28 days, the effect of V. oxycoccos extract on serum and urine parameters were assessed. STZ caused significant decreased in the mice body weight. Mice treated with the V. oxycoccos (400 mg/kg) harbored the lowest weight loss at day 28 (70.2±1.38 g). STZ caused significant increase in the mice FBS. Mice treated with the V. oxycoccos (400 mg/kg) harbored the lowest FBS at day 28 (189.2±1.20 mg/dL). Treatment of mice with V. oxycoccos (400 mg/kg) caused the lowest increase in the levels of cholesterol, HbA1c and triglycerides compared to the diabetic control mice. Compared to the diabetic control group, mice treated with V. oxycoccos (400 mg/kg) had the highest HDL, insulin, SOD, and GSH (p<0.05). The lowest serum BUN, CR, and UR were found in mice treated with V. oxycoccos (400 mg/kg). Anti-inflammatory effects of V. oxycoccos (400 mg/kg) was shown by the lowest TNF-α, IL-6, and TGF-β1 concentration in mice treated with V. oxycoccos (400 mg/kg). CONCLUSIONS The current study disclosed that treatment with V. oxycoccos resulted in substantial development in the serum and urine parameters and also antioxidant and anti-inflammatory response of STZ-induced diabetic mice.
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Affiliation(s)
- Saja Majeed Shareef
- Department of Pharmacology and Toxicology, Collage of Pharmacy, 554706 Al-Esraa University , Baghdad, Iraq
| | | | - Taif M Maryoosh
- Department of Pharmacy, Al-Kut University Collage, Wasit, Iraq
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Tai MT, Zhang CF, Fan CW, Tian WY, Yu Q, Fu Y, Xia DL, Mao ML, Shi DL, Ke ZL. [Intervention effect of Erchen Decoction on methionine and choline deficient diet-induced non-alcoholic steatohepatitis in mice]. Zhongguo Zhong Yao Za Zhi 2024; 49:1310-1317. [PMID: 38621978 DOI: 10.19540/j.cnki.cjcmm.20231013.401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
This study investigated the effect of Erchen Decoction(ECD) on the prevention of non-alcoholic steatohepatitis(NASH) in mice and explored its possible mechanism, so as to provide scientific data for the clinical application of ECD in the prevention of NASH. C57BL/6 male mice were randomly divided into normal group(methionine and choline supplement, MCS), model group(methionine and choline deficient, MCD), low-dose ECD group(ECD_L, 6 g·kg~(-1)), medium-dose ECD group(ECD_M, 12 g·kg~(-1)), and high-dose ECD group(ECD_H, 24 g·kg~(-1)), with eight mice in each group. The MCS group was fed with an MCS diet, and the other groups were fed with an MCD diet. The mice in each group were given corresponding diets, but the drug intervention group was given low-, medium-, and high-dose ECD(10 mL·kg~(-1)·d~(-1)) by intragastric administration for six weeks on the basis of MCD diet feeding, and the mice could eat and drink freely during the whole experiment. At the end of the experiment, mice were fasted overnight(12 h) and were anesthetized with 20% urethane. Thereafter, the blood and liver tissue were collected. The serum was used to detect the levels of alanine aminotransferase(ALT), aspartate aminotransaminase(AST), interleukin-1β(IL-1β), interleukin-6(IL-6), interleukin-10(IL-10), and tumor necrosis factor-α(TNF-α). Liver tissue was processed by hematoxylin-eosin(HE) staining and used for hepatic histological analysis and detection of the expression levels of genes and proteins related to nuclear factor erythroid 2-related factor 2/glutathione peroxidase 4(Nrf2/GPX4) pathway by real-time quantitative reverse transcriptase-polymerase chain reaction(RT-qPCR) and Western blot analysis, respectively. The results showed that compared with the MCS group, the MCD group showed higher serum ALT and AST levels; the HE staining exhibited fat vacuoles and obvious inflammatory cell infiltration in liver tissue; serum IL-1β, IL-6, and TNF-α levels were significantly increased, and the serum IL-10 level was significantly decreased. The mRNA expressions of fatty acid synthase(FASN), monocyte chemoattractant protein-1(MCP-1), and IL-1β in liver tissue were significantly up-regulated, while those of GPX4, Nrf2, and NAD(P)H:quinine oxidoreductase(NQO1) were significantly down-regulated. Compared with the MCD group, the serum ALT and AST levels of ECD_M and ECD_H groups were significantly decreased, and the AST level in the ECD_L group was significantly decreased. The number of fat vacuoles and the degree of inflammatory cell infiltration in liver tissue were improved; serum IL-1β, IL-6, and TNF-α levels were significantly decreased, but the serum IL-10 level was significantly increased only in the ECD_H group. The mRNA expressions of FASN, MCP-1, and IL-1β in liver tissue were significantly down-regulated, and those of GPX4 and NQO1 were significantly up-regulated. The mRNA expressions of Nrf2 in ECD_M and ECD_H groups were significantly up-regulated. Western blot results showed that compared with the MCD group, the protein expression levels of Nrf2 and GPX4 in each group were significantly increased after ECD administration, and the protein expression level of FASN was significantly decreased; the protein expression of NQO1 was increased in ECD_M and ECD_H groups. In summary, ECD can reduce hepatic lipid accumulation, oxidative stress, liver inflammation, and liver injury in NASH mice, which may be related to the activation of the Nrf2/GPX4 pathway.
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Affiliation(s)
- Mei-Ting Tai
- Guizhou University of Traditional Chinese Medicine Guiyang 550025, China
| | - Chen-Fang Zhang
- Guizhou University of Traditional Chinese Medicine Guiyang 550025, China
| | - Chao-Wen Fan
- Guizhou University of Traditional Chinese Medicine Guiyang 550025, China
| | - Wei-Yi Tian
- Guizhou University of Traditional Chinese Medicine Guiyang 550025, China
| | - Qi Yu
- Guizhou University of Traditional Chinese Medicine Guiyang 550025, China
| | - Yan Fu
- Guizhou University of Traditional Chinese Medicine Guiyang 550025, China
| | - De-Li Xia
- Guizhou University of Traditional Chinese Medicine Guiyang 550025, China
| | - Meng-Lan Mao
- Guizhou University of Traditional Chinese Medicine Guiyang 550025, China
| | - Dan-Lu Shi
- Guizhou University of Traditional Chinese Medicine Guiyang 550025, China
| | - Zun-Li Ke
- Guizhou University of Traditional Chinese Medicine Guiyang 550025, China
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Cristian RE, Balta C, Herman H, Trica B, Sbarcea BG, Hermenean A, Dinischiotu A, Stan MS. In Vivo Assessment of Hepatic and Kidney Toxicity Induced by Silicon Quantum Dots in Mice. Nanomaterials (Basel) 2024; 14:457. [PMID: 38470787 DOI: 10.3390/nano14050457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 02/24/2024] [Accepted: 02/27/2024] [Indexed: 03/14/2024]
Abstract
In the last decade, silicon-based quantum dots (SiQDs) have attracted the attention of researchers due to their unique properties for which they are used in medical applications and in vivo imaging. Detection of cytotoxic effects in vivo is essential for understanding the mechanisms of toxicity, a mandatory step before their administration to human subjects. In this context, we aimed to evaluate the in vivo hepatic and renal acute toxicity of SiQDs obtained by laser ablation. The nanoparticles were administrated at different doses (0, 1, 10, and 100 mg of QDs/kg of body weight) by intravenous injection into the caudal vein of Swiss mice. After 1, 6, 24, and 72 h, the animals were euthanatized, and liver and kidney tissues were used in further toxicity tests. The time- and dose-dependent effects of SiQDs on the antioxidant defense system of mice liver and kidney were investigated by quantifying the activity of antioxidant enzymes (catalase, superoxide dismutase, glutathione peroxidase, glutathione reductase, and glutathione S-transferase) in correlation with the morphological changes and inflammatory status in the liver and kidneys. The results showed a decrease in the activities of antioxidant enzymes and histopathological changes, except for superoxide dismutase, in which no significant changes were registered compared with the control. Furthermore, the immunohistochemical expression of TNF-α was significant at doses over 10 mg of QDs/kg of body weight and were still evident at 72 h after administration. Our results showed that doses under 10 mg of SiQDs/kg of b.w. did not induce hepatic and renal toxicity, providing useful information for further clinical trials.
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Affiliation(s)
- Roxana-Elena Cristian
- Departament of Biochemistry and Molecular Biology, Faculty of Biology, University of Bucharest, 91-95 Splaiul Independentei, 050095 Bucharest, Romania
- DANUBIUS Department, National Institute of Research and Development for Biological Sciences, Splaiul Independentei 296, 060031 Bucharest, Romania
| | - Cornel Balta
- "Aurel Ardelean" Institute of Life Sciences, Vasile Goldis Western University of Arad, 86 Rebreanu, 310414 Arad, Romania
| | - Hildegard Herman
- "Aurel Ardelean" Institute of Life Sciences, Vasile Goldis Western University of Arad, 86 Rebreanu, 310414 Arad, Romania
| | - Bogdan Trica
- National Institute for Research & Development in Chemistry and Petrochemistry (INCDCP-ICECHIM), 202 Spl. Independentei, 060021 Bucharest, Romania
| | - Beatrice G Sbarcea
- Materials Characterization Department, National Institute for Research & Development in Electrical Engineering (ICPE-CA), 313 Splaiul Unirii, 030138 Bucharest, Romania
| | - Anca Hermenean
- Departament of Biochemistry and Molecular Biology, Faculty of Biology, University of Bucharest, 91-95 Splaiul Independentei, 050095 Bucharest, Romania
- "Aurel Ardelean" Institute of Life Sciences, Vasile Goldis Western University of Arad, 86 Rebreanu, 310414 Arad, Romania
| | - Anca Dinischiotu
- Departament of Biochemistry and Molecular Biology, Faculty of Biology, University of Bucharest, 91-95 Splaiul Independentei, 050095 Bucharest, Romania
| | - Miruna S Stan
- Departament of Biochemistry and Molecular Biology, Faculty of Biology, University of Bucharest, 91-95 Splaiul Independentei, 050095 Bucharest, Romania
- Research Institute of the University of Bucharest (ICUB), University of Bucharest, 91-95 Spl. Independentei, 050095 Bucharest, Romania
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Ishiguro T, Furukawa H, Polen K, Take Y, Sato H, Kudo D, Morgan J, Uchikawa H, Maeda T, Cisneros O, Rahmani R, Ai J, Eguchi S, Lawton M, Hashimoto T. Pharmacological Inhibition of Epidermal Growth Factor Receptor Prevents Intracranial Aneurysm Rupture by Reducing Endoplasmic Reticulum Stress. Hypertension 2024; 81:572-581. [PMID: 38164754 PMCID: PMC10922815 DOI: 10.1161/hypertensionaha.123.21235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Accepted: 12/16/2023] [Indexed: 01/03/2024]
Abstract
BACKGROUND Multiple pathways and factors are involved in the rupture of intracranial aneurysms. The EGFR (epidermal growth factor receptor) has been shown to mediate inflammatory vascular diseases, including atherosclerosis and aortic aneurysm. However, the role of EGFR in mediating intracranial aneurysm rupture and its underlying mechanisms have yet to be determined. Emerging evidence indicates that endoplasmic reticulum (ER) stress might be the link between EGFR activation and the resultant inflammation. ER stress is strongly implicated in inflammation and apoptosis of vascular smooth muscle cells, both of which are key components of the pathophysiology of aneurysm rupture. Therefore, we hypothesized that EGFR activation promotes aneurysmal rupture by inducing ER stress. METHODS Using a preclinical mouse model of intracranial aneurysm, we examined the potential roles of EGFR and ER stress in developing aneurysmal rupture. RESULTS Pharmacological inhibition of EGFR markedly decreased the rupture rate of intracranial aneurysms without altering the formation rate. EGFR inhibition also significantly reduced the mRNA (messenger RNA) expression levels of ER-stress markers and inflammatory cytokines in cerebral arteries. Similarly, ER-stress inhibition also significantly decreased the rupture rate. In contrast, ER-stress induction nullified the protective effect of EGFR inhibition on aneurysm rupture. CONCLUSIONS Our data suggest that EGFR activation is an upstream event that contributes to aneurysm rupture via the induction of ER stress. Pharmacological inhibition of EGFR or downstream ER stress may be a promising therapeutic strategy for preventing aneurysm rupture and subarachnoid hemorrhage.
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Affiliation(s)
- Taichi Ishiguro
- Barrow Aneurysm and AVM Research Center, Barrow Neurological Institute, Phoenix, Arizona, U.S.A
| | - Hajime Furukawa
- Barrow Aneurysm and AVM Research Center, Barrow Neurological Institute, Phoenix, Arizona, U.S.A
| | - Kyle Polen
- Barrow Aneurysm and AVM Research Center, Barrow Neurological Institute, Phoenix, Arizona, U.S.A
| | - Yushiro Take
- Barrow Aneurysm and AVM Research Center, Barrow Neurological Institute, Phoenix, Arizona, U.S.A
| | - Hiroki Sato
- Barrow Aneurysm and AVM Research Center, Barrow Neurological Institute, Phoenix, Arizona, U.S.A
| | - Daisuke Kudo
- Barrow Aneurysm and AVM Research Center, Barrow Neurological Institute, Phoenix, Arizona, U.S.A
| | - Jordan Morgan
- Barrow Aneurysm and AVM Research Center, Barrow Neurological Institute, Phoenix, Arizona, U.S.A
| | - Hiroki Uchikawa
- Barrow Aneurysm and AVM Research Center, Barrow Neurological Institute, Phoenix, Arizona, U.S.A
| | - Takuma Maeda
- Barrow Aneurysm and AVM Research Center, Barrow Neurological Institute, Phoenix, Arizona, U.S.A
| | - Oscar Cisneros
- Barrow Aneurysm and AVM Research Center, Barrow Neurological Institute, Phoenix, Arizona, U.S.A
| | - Redi Rahmani
- Barrow Aneurysm and AVM Research Center, Barrow Neurological Institute, Phoenix, Arizona, U.S.A
| | - Jinglu Ai
- Barrow Aneurysm and AVM Research Center, Barrow Neurological Institute, Phoenix, Arizona, U.S.A
| | - Satoru Eguchi
- Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, U.S.A
| | - Michael Lawton
- Barrow Aneurysm and AVM Research Center, Barrow Neurological Institute, Phoenix, Arizona, U.S.A
- Department of Neurosurgery, Barrow Neurological Institute, Phoenix, Arizona, U.S.A
| | - Tomoki Hashimoto
- Barrow Aneurysm and AVM Research Center, Barrow Neurological Institute, Phoenix, Arizona, U.S.A
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Zhang X, Shi H, Hendy DA, Bachelder EM, Ainslie KM, Ross TM. Multi-COBRA hemagglutinin formulated with cGAMP microparticles elicit protective immune responses against influenza viruses. bioRxiv 2024:2024.02.27.582355. [PMID: 38464191 PMCID: PMC10925245 DOI: 10.1101/2024.02.27.582355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
Influenza viruses cause a common respiratory disease known as influenza. In humans, seasonal influenza viruses can lead to epidemics, with avian influenza viruses of particular concern because they can infect multiple species and lead to unpredictable and severe disease. Therefore, there is an urgent need for a universal influenza vaccine that provides protection against seasonal and pre-pandemic influenza virus strains. The cyclic GMP-AMP (cGAMP) is a promising adjuvant for subunit vaccines that promotes type I interferons production through the stimulator of interferon genes (STING) pathway. The encapsulation of cGAMP in acetalated dextran (Ace-DEX) microparticles (MPs) enhances its intracellular delivery. In this study, the Computationally Optimized Broadly Reactive Antigen (COBRA) methodology was used to generate H1, H3, and H5 vaccine candidates. Monovalent and multivalent COBRA HA vaccines formulated with cGAMP Ace-DEX MPs were evaluated in a mouse model for antibody responses and protection against viral challenge. Serological analysis showed that cGAMP MPs adjuvanted monovalent and multivalent COBRA vaccines elicited robust antigen-specific antibody responses after a prime-boost vaccination and antibody titers were further enhanced after second boost. Compared to COBRA vaccine groups with no adjuvant or blank MPs, the cGAMP MPs enhanced HAI antibody responses against COBRA vaccination. The HAI antibody titers were not significantly different between cGAMP MPs adjuvanted monovalent and multivalent COBRA vaccine groups for most of the viruses tested in panels. The cGAMP MPs adjuvanted COBRA vaccines groups had higher antigen-specific IgG2a binding titers than the COBRA vaccine groups with no adjuvant or blank MPs. The COBRA vaccines formulated with cGAMP MPs mitigated disease caused by influenza viral challenge and decreased pulmonary viral titers in mice. Therefore, the formulation of COBRA vaccines plus cGAMP MPs is a promising universal influenza vaccine that elicits protective immune responses against human seasonal and pre-pandemic strains.
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Affiliation(s)
- Xiaojian Zhang
- Center for Vaccines and Immunology, University of Georgia, Athens, GA, USA
| | - Hua Shi
- Center for Vaccines and Immunology, University of Georgia, Athens, GA, USA
| | - Dylan A. Hendy
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, USA
| | - Eric M. Bachelder
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, USA
| | - Kristy M. Ainslie
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, USA
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, USA
- Department of Microbiology and Immunology, UNC School of Medicine, University of North Carolina, Chapel Hill, NC, USA
| | - Ted M. Ross
- Center for Vaccines and Immunology, University of Georgia, Athens, GA, USA
- Florida Research and Innovation Center, Port Saint, Cleveland Clinic Florida, Port St. Lucie, FL, USA; Department of Infectious Diseases, University of Georgia, Athens, GA, USA
- Florida Research and Innovation Center, Cleveland Clinic, Port Saint Lucie, FL, USA
- Department of Infection Biology, Lehner Research Institute, Cleveland Clinic, Cleveland, OH, USA
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85
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Qu J, Dang S, Sun YY, Zhang T, Jiang H, Lu HZ. METTL21C mediates the occurrence of autophagy and formation of slow-twitch muscle fibers after exercise. Genes Genet Syst 2024:23-00320. [PMID: 38417894 DOI: 10.1266/ggs.23-00320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2024] Open
Abstract
Homeostasis is essential for muscle repair and regeneration after skeletal muscle exercise. This study investigated the role of methyltransferase-like 21C (METTL21C) in skeletal muscle of mice after exercise and the potential mechanism. First, muscle samples were collected at 2, 4, and 6 weeks after exercise, liver glycogen, muscle glycogen, blood lactic acid (BLA) and triglyceride (TG) were assessed. Moreover, the expression levels of autophagy markers and METTL21C in skeletal muscle were analyzed. The results showed that the expressions of METTL21C and MYH7 in the gastrocnemius muscle of mice in the exercise group were significantly higher than that in the control group after exercise, which suggested that long-term exercise promoted the formation of slow-twitch muscle fibers in mouse skeletal muscle. Likewise, the autophagy capacity is enhanced with the extension of exercise in muscles. The findings were further verified in mouse C2C12 cells. We discovered that knockdown of Mettl21c reduced the expression of MYH7 and autophagy level in mouse myoblasts. These findings indicate that METTL21C promotes skeletal muscle homeostasis after exercise by enhancing autophagy, while METTL21C also contributes to differentiation of myogenic and formation of slow muscle fiber.
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Affiliation(s)
- Jing Qu
- Institute of physical education, Shaanxi University of Technology
| | - Shuai Dang
- School of Biological Science and Engineering, Shaanxi University of Technology
| | - Yuan-Yuan Sun
- School of Biological Science and Engineering, Shaanxi University of Technology
| | - Tao Zhang
- School of Biological Science and Engineering, Shaanxi University of Technology
- Qinba State Key Laboratory of Biological Resources and Ecological Environment, Shaanxi University of Technology
| | - Hai Jiang
- Institute of physical education, Shaanxi University of Technology
| | - Hong-Zhao Lu
- School of Biological Science and Engineering, Shaanxi University of Technology
- Qinba State Key Laboratory of Biological Resources and Ecological Environment, Shaanxi University of Technology
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86
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Li Q, Tang X, Huang L, Wang T, Huang Y, Jiang S. Anti-allergic effect of vitamin C through inhibiting degranulation and regulating T H 1/T H 2 cell polarization. J Sci Food Agric 2024. [PMID: 38415860 DOI: 10.1002/jsfa.13419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 01/26/2024] [Accepted: 02/26/2024] [Indexed: 02/29/2024]
Abstract
BACKGROUND Food allergy has become a global public health problem. This study aimed to explore the possible anti-allergic effect of vitamin C (VC). A rat basophilic leukemia (RBL)-2H3 cell degranulation model was used to assess the effect of VC on degranulation in vitro, and an ovalbumin (OVA)-induced BALB/c mouse allergy model was used to assess the anti-allergy effect of VC in vivo. RESULTS In vitro, VC significantly attenuated the release of β-hexosaminidase, tryptase and histamine, and also reduced cytokine production (interleukins 4 and 6, tumor necrosis factor α) significantly (P < 0.05), with the inhibitory effect demonstrating a positive correlation with VC dose. In vivo, compared with the OVA group, the levels of serum immunoglobulins E and G1 of the VC low-dose (VCL) group (50 mg kg-1 ) and high-dose (VCH) group (200 mg·kg-1 ) were significantly reduced (P < 0.05). Furthermore, the plasma histamine level was also significantly decreased (P < 0.05). Moreover, TH 2 cell polarization in mice of the VCL and VCH groups was significantly inhibited (P < 0.05), promoting the TH 1/TH 2 cell polarization balance. Additionally, VC treatment enhanced the expression of CD80 (P < 0.05) in spleen and small intestine tissues, while significantly inhibiting the expression of CD86 (P < 0.05); notably, high-dose VC treatment was more effective. CONCLUSION VC exerted an anti-allergic effect through inhibiting degranulation and regulating TH 1/TH 2 cell polarization balance. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Qian Li
- College of Tourism and Culinary Science, Yangzhou University, Yangzhou, People's Republic of China
| | - Xinlei Tang
- College of Tourism and Culinary Science, Yangzhou University, Yangzhou, People's Republic of China
| | - Lu Huang
- College of Tourism and Culinary Science, Yangzhou University, Yangzhou, People's Republic of China
| | - Tao Wang
- College of Tourism and Culinary Science, Yangzhou University, Yangzhou, People's Republic of China
| | - Yutong Huang
- College of Tourism and Culinary Science, Yangzhou University, Yangzhou, People's Republic of China
| | - Songsong Jiang
- College of Tourism and Culinary Science, Yangzhou University, Yangzhou, People's Republic of China
- Key Laboratory of Chinese Cuisine Intangible Cultural Heritage Technology Inheritance, Ministry of Culture and Tourism, Yangzhou, People's Republic of China
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87
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Cheng CF, Wang SE, Lu CW, Nguyen TKN, Shen SC, Lien CY, Chuang WC, Lee MC, Wu CH. Therapeutic Application of Dendrobium fimbriatum Hook for Retinopathy Caused by Ultraviolet Radiation and Chemotherapy Using ARPE-19 Cells and Mouse Retina. Plants (Basel) 2024; 13:617. [PMID: 38475464 DOI: 10.3390/plants13050617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 02/13/2024] [Accepted: 02/21/2024] [Indexed: 03/14/2024]
Abstract
Retinopathy caused by ultraviolet radiation and cancer chemotherapy has increased dramatically in humans due to rapid environmental and social changes. Therefore, it is very important to develop therapeutic strategies to effectively alleviate retinopathy. In China, people often choose dendrobium to improve their eyesight. In this study, we explored how Dendrobium fimbriatum extract (DFE) protects ARPE-19 cells and mouse retinal tissue from damage of ultraviolet (UV) radiation and chemotherapy. We evaluated the antioxidant capacity of DFE using the 1,1-diphenyl-2-trinitophenylhydrazine (DPPH) assay. The protective effects of DEF from UV- and oxaliplatin (OXA)-induced damage were examined in ARPE-19 cells using 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and immunofluorescence (IF) stains, and in mouse retinal tissue using immunohistochemistry (IHC) stains. Our results show that DFE has excellent antioxidant capacity. The ARPE-19 cell viability was decreased and the F-actin cytoskeleton structure was damaged by UV radiation and OXA chemotherapy, but both were alleviated after the DFE treatment. Furthermore, DFE treatment can alleviate OXA chemotherapy-induced reduced expressions of rhodopsin and SOD2 and increased expressions of TNF-α and caspase 3 in mouse retinal tissue. Thus, we suggest that DFE can act as suitable treatment for retinopathy through reducing oxidative stress, inflammation, and apoptosis.
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Affiliation(s)
- Chi-Feng Cheng
- School of Life Science, National Taiwan Normal University, Taipei 116, Taiwan
- Department of Oncology, Taipei City United Hospital, Renai Branch, Taipei 106, Taiwan
| | - Sheue-Er Wang
- Department of Pathological Inspection, Saint Paul's Hospital, Taoyuan 330, Taiwan
| | - Chen-Wen Lu
- School of Life Science, National Taiwan Normal University, Taipei 116, Taiwan
| | - Thi Kim Ngan Nguyen
- School of Life Science, National Taiwan Normal University, Taipei 116, Taiwan
| | - Szu-Chuan Shen
- School of Life Science, National Taiwan Normal University, Taipei 116, Taiwan
| | - Chia-Ying Lien
- Master Program of Sport Facility Management and Health Promotion, National Taiwan University, Taipei 116, Taiwan
| | - Wu-Chang Chuang
- Sun Ten Pharmaceutical Co., Ltd., New Taipei City 231, Taiwan
| | - Ming-Chung Lee
- Brion Research Institute of Taiwan, New Taipei City 231, Taiwan
| | - Chung-Hsin Wu
- School of Life Science, National Taiwan Normal University, Taipei 116, Taiwan
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88
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Castro GNDS, de Souza RDN, Matos da Silva AC, Laureano-Melo R, Côrtes WDS, Capim SL, Vasconcellos MLADA, Marinho BG. Analgesic and Anti-Inflammatory Potential of the New Tetrahydropyran Derivative (2s,6s)-6-ethyl-tetrahydro-2h-pyran-2-yl) Methanol. Antiinflamm Antiallergy Agents Med Chem 2024; 23:AIAAMC-EPUB-138669. [PMID: 38409717 DOI: 10.2174/0118715230282982240202052127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 01/16/2024] [Accepted: 01/18/2024] [Indexed: 02/28/2024]
Abstract
BACKGROUND The development of analgesic and anti-inflammatory drugs plays a crucial role in modern medicine, aiming to alleviate pain and reduce inflammation in patients. Opioids and nonsteroidal anti-inflammatory drugs are groups of drugs conventionally used to treat pain and inflammation, but a wide range of adverse effects and ineffectiveness in some pathological conditions leads us to search for new drugs with analgesic and anti-inflammatory properties. OBJECTIVE In this regard, the authors intend to investigate the ((2s,6s)-6-ethyl-tetrahydro-2h-pyran- 2-yl) methanol compound (LS20) on pain and acute inflammation. METHODS Male Swiss mice were evaluated using acetic acid-induced abdominal writhing, formalin, and tail-flick as models of nociceptive evaluation and edema paw, air pouch and cell culture as models of inflammatory evaluation besides the rotarod test for assessment of motor impairment. RESULTS The compound showed an effect on the acetic acid-induced abdominal writhing, formalin and tail-flick tests. Studying the mechanism of action, reversion of the antinociceptive effect of the compound was observed from previous intraperitoneal administration of selective and non-selective opioid antagonists on the tail flick test. In addition, the compound induced an antiedematogenic effect and reduced leukocyte migration and the production of pro-inflammatory cytokines in the air pouch model. LS20 was able to maintain cell viability, in addition to reducing cell production of TNF-α and IL-6. CONCLUSION In summary, the LS20 compound presented an antinociceptive effect, demonstrating the participation of the opioid system and an anti-inflammatory effect related to the inhibition of proinflammatory cytokine production. The compound also demonstrated safety at the cellular level.
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Affiliation(s)
- Gustavo Nunes de Santana Castro
- Laboratório de Farmacologia da Inflamação e Nocicepção, Programa de Pós-Graduação em Medicina Veterinária, Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, Brasil
| | - Raquel do Nascimento de Souza
- Laboratório de Cultura de Células, Instituto de Ciências Biológicas e da Saúde, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, Brasil
| | - Alba Cenélia Matos da Silva
- Laboratório de Cultura de Células, Instituto de Ciências Biológicas e da Saúde, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, Brasil
| | - Roberto Laureano-Melo
- Laboratório de Fisiofarmacologia Comportamental, Centro Universitário de Barra Mansa, Barra Mansa, RJ, Brasil
| | - Wellington da Silva Côrtes
- Laboratório de Psicofarmacologia e Comportamento, Programa de Pós-Graduação Multicêntrico em Ciências Fisiológicas, Instituto de Ciências Biológicas e da Saúde, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, Brasil
| | - Saulo Luis Capim
- Instituto Federal de Educação, Ciência e Tecnologia Baiano, Campus Catu, BA, Brasil
| | | | - Bruno Guimarães Marinho
- Laboratório de Farmacologia da Inflamação e Nocicepção, Programa de Pós-Graduação em Medicina Veterinária, Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, Brasil
- Laboratório de Cultura de Células, Instituto de Ciências Biológicas e da Saúde, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, Brasil
- Laboratório de Psicofarmacologia e Comportamento, Programa de Pós-Graduação Multicêntrico em Ciências Fisiológicas, Instituto de Ciências Biológicas e da Saúde, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, Brasil
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89
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Schellinger IN, Dannert A, Hoffmann A, Chodisetti G, Mattern K, Petzold A, Klöting N, Schuster A, Wagenhäuser MU, Emrich F, Stumvoll M, Hasenfuß G, Raaz U. Angiotensin Receptor-Neprilysin Inhibition (Sacubitril/Valsartan) Reduces Structural Arterial Stiffness in Middle-Aged Mice. J Am Heart Assoc 2024; 13:e032641. [PMID: 38348796 PMCID: PMC11010079 DOI: 10.1161/jaha.123.032641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 01/09/2024] [Indexed: 02/21/2024]
Abstract
BACKGROUND Increasing arterial stiffness is a prominent feature of the aging cardiovascular system. Arterial stiffening leads to fundamental alterations in central hemodynamics with widespread detrimental implications for organ function resulting in significant morbidity and death, and specific therapies to address the underlying age-related structural arterial remodeling remain elusive. The present study investigates the potential of the recently clinically available dual angiotensin receptor-neprilysin inhibitor (ARNI) sacubitril/valsartan (LCZ696) to counteract age-related arterial fibrotic remodeling and stiffening in 1-year-old mice. METHODS AND RESULTS Treatment of in 1-year-old mice with ARNI (sacubitril/valsartan), in contrast to angiotensin receptor blocker monotherapy (valsartan) and vehicle treatment (controls), significantly decreases structural aortic stiffness (as measured by in vivo pulse-wave velocity and ex vivo aortic pressure myography). This phenomenon appears, at least partly, independent of (indirect) blood pressure effects and may be related to a direct antifibrotic interference with aortic smooth muscle cell collagen production. Furthermore, we find aortic remodeling and destiffening due to ARNI treatment to be associated with improved parameters of cardiac diastolic function in aged mice. CONCLUSIONS This study provides preclinical mechanistic evidence indicating that ARNI-based interventions may counteract age-related arterial stiffening and may therefore be further investigated as a promising strategy to improve cardiovascular outcomes in the elderly.
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Affiliation(s)
- Isabel N. Schellinger
- Department of Cardiology and PneumologyHeart Center at the University Medical Center GöttingenGöttingenGermany
- German Center for Cardiovascular Research (DZHK) e.V. Partner site GöttingenGöttingenGermany
- Department for Endocrinology, Nephrology and RheumatologyUniversity Medical Center Leipzig, University of LeipzigLeipzigGermany
| | - Angelika Dannert
- Department of Cardiology and PneumologyHeart Center at the University Medical Center GöttingenGöttingenGermany
| | - Annet Hoffmann
- Department for Endocrinology, Nephrology and RheumatologyUniversity Medical Center Leipzig, University of LeipzigLeipzigGermany
| | - Giriprakash Chodisetti
- Department of Cardiology and PneumologyHeart Center at the University Medical Center GöttingenGöttingenGermany
| | - Karin Mattern
- Department of Cardiology and PneumologyHeart Center at the University Medical Center GöttingenGöttingenGermany
| | - Anne Petzold
- Department of Cardiology and PneumologyHeart Center at the University Medical Center GöttingenGöttingenGermany
| | - Nora Klöting
- Department for Endocrinology, Nephrology and RheumatologyUniversity Medical Center Leipzig, University of LeipzigLeipzigGermany
| | - Andreas Schuster
- Department of Cardiology and PneumologyHeart Center at the University Medical Center GöttingenGöttingenGermany
- German Center for Cardiovascular Research (DZHK) e.V. Partner site GöttingenGöttingenGermany
| | - Markus U. Wagenhäuser
- Department of Vascular and Endovascular SurgeryUniversity Hospital Düsseldorf, Heinrich‐Heine‐UniversityDüsseldorfGermany
| | - Fabian Emrich
- Department of Cardiothoracic and Vascular SurgeryGoethe University Hospital FrankfurtFrankfurtGermany
| | - Michael Stumvoll
- Department for Endocrinology, Nephrology and RheumatologyUniversity Medical Center Leipzig, University of LeipzigLeipzigGermany
| | - Gerd Hasenfuß
- Department of Cardiology and PneumologyHeart Center at the University Medical Center GöttingenGöttingenGermany
- German Center for Cardiovascular Research (DZHK) e.V. Partner site GöttingenGöttingenGermany
| | - Uwe Raaz
- Department of Cardiology and PneumologyHeart Center at the University Medical Center GöttingenGöttingenGermany
- German Center for Cardiovascular Research (DZHK) e.V. Partner site GöttingenGöttingenGermany
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90
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Adonina S, Bazhenova E, Bazovkina D. Effect of Short Photoperiod on Behavior and Brain Plasticity in Mice Differing in Predisposition to Catalepsy: The Role of BDNF and Serotonin System. Int J Mol Sci 2024; 25:2469. [PMID: 38473717 DOI: 10.3390/ijms25052469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Revised: 02/14/2024] [Accepted: 02/18/2024] [Indexed: 03/14/2024] Open
Abstract
Seasonal affective disorder is characterized by depression during fall/winter as a result of shorter daylight. Catalepsy is a syndrome of some grave mental diseases. Both the neurotransmitter serotonin (5-HT) and brain-derived neurotrophic factor (BDNF) are involved in the pathophysiological mechanisms underlying catalepsy and depressive disorders. The aim was to compare the response of behavior and brain plasticity to photoperiod alterations in catalepsy-resistant C57BL/6J and catalepsy-prone CBA/Lac male mice. Mice of both strains were exposed for six weeks to standard-day (14 h light/10 h darkness) or short-day (4 h light/20 h darkness) conditions. Short photoperiod increased depressive-like behavior in both strains. Only treated CBA/Lac mice demonstrated increased cataleptic immobility, decreased brain 5-HT level, and the expression of Tph2 gene encoding the key enzyme for 5-HT biosynthesis. Mice of both strains maintained under short-day conditions, compared to those under standard-day conditions, showed a region-specific decrease in the brain transcription of the Htr1a, Htr4, and Htr7 genes. After a short photoperiod exposure, the mRNA levels of the BDNF-related genes were reduced in CBA/Lac mice and were increased in the C57BL/6J mice. Thus, the predisposition to catalepsy considerably influences the photoperiodic changes in neuroplasticity, wherein both C57BL/6J and CBA/Lac mice can serve as a powerful tool for investigating the link between seasons and mood.
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Affiliation(s)
- Svetlana Adonina
- Federal Research Center Institute of Cytology and Genetics, Siberian Division of the Russian Academy of Science, Lavrentieva 10, Novosibirsk 630090, Russia
| | - Ekaterina Bazhenova
- Federal Research Center Institute of Cytology and Genetics, Siberian Division of the Russian Academy of Science, Lavrentieva 10, Novosibirsk 630090, Russia
| | - Darya Bazovkina
- Federal Research Center Institute of Cytology and Genetics, Siberian Division of the Russian Academy of Science, Lavrentieva 10, Novosibirsk 630090, Russia
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91
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Lillo Vizin RC, Kopruszinski CM, Redman PM, Ito H, Rau J, Dodick DW, Navratilova E, Porreca F. Unraveling the directional relationship of sleep and migraine-like pain. Brain Commun 2024; 6:fcae051. [PMID: 38444905 PMCID: PMC10914446 DOI: 10.1093/braincomms/fcae051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 12/20/2023] [Accepted: 02/15/2024] [Indexed: 03/07/2024] Open
Abstract
Migraine and sleep disorders are common co-morbidities. Patients frequently link their sleep to migraine attacks suggesting a potential causal relationship between these conditions. However, whether migraine pain promotes or disrupts sleep or whether sleep disruption can increase the risk of migraine remains unknown. We assessed the potential impact of periorbital allodynia, a measure consistent with migraine-like pain, from multiple preclinical models on sleep quantity and quality. Additionally, we evaluated the possible consequences of sleep deprivation in promoting susceptibility to migraine-like pain. Following the implantation of electroencephalogram/electromyography electrodes to record sleep, mice were treated with either single or repeated systemic injections of nitroglycerin at the onset of their active phase (i.e. nocturnal awake period). Neither single nor repeated nitroglycerin affected the total sleep time, non-rapid eye movement sleep, rapid eye movement sleep, sleep depth or other measures of sleep architecture. To account for the possible disruptive effects of the surgical implantation of electroencephalogram/electromyography electrodes, we used immobility recordings as a non-invasive method for assessing sleep-wake behaviour. Neither single nor repeated nitroglycerin administration during either the mouse sleep (i.e. daylight) or active (i.e. night) periods influenced immobility-defined sleep time. Administration of an inflammatory mediator mixture onto the dura mater at either sleep or active phases also did not affect immobility-defined sleep time. Additionally, inhalational umbellulone-induced migraine-like pain in restraint-stressed primed mice did not alter immobility-defined sleep time. The possible influence of sleep disruption on susceptibility to migraine-like pain was evaluated by depriving female mice of sleep over 6 h with novel objects, a method that does not increase circulating stress hormones. Migraine-like pain was not observed following acute sleep deprivation. However, in sleep-deprived mice, subthreshold doses of systemic nitroglycerin or dural calcitonin gene-related peptide induced periorbital cutaneous allodynia consistent with migraine-like pain. Our data reveal that while migraine-like pain does not significantly disrupt sleep, sleep disruption increases vulnerability to migraine-like pain suggesting that a therapeutic strategy focused on improving sleep may diminish migraine attacks.
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Affiliation(s)
- Robson C Lillo Vizin
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ 85724, USA
| | - Caroline M Kopruszinski
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ 85724, USA
| | - Paula M Redman
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ 85724, USA
| | - Hisakatsu Ito
- Department of Anesthesiology, University of Toyama, Toyama 930-0194, Japan
| | - Jill Rau
- Department of Neurology, Bob Bové Neuroscience Institute at HonorHealth, Scottsdale, AZ 85251, USA
| | - David W Dodick
- Department of Neurology, Mayo Clinic, Phoenix, AZ 85054, USA
| | - Edita Navratilova
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ 85724, USA
| | - Frank Porreca
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ 85724, USA
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92
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Kamradt ML, Makarewich CA. CHKB-DT: A Long Noncoding RNA Critical for Cardiovascular Health. Circ Res 2024; 134:442-444. [PMID: 38359100 PMCID: PMC10871552 DOI: 10.1161/circresaha.124.324166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Affiliation(s)
- Michael L. Kamradt
- The Heart Institute, Division of Molecular Cardiovascular Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, USA
| | - Catherine A. Makarewich
- The Heart Institute, Division of Molecular Cardiovascular Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, USA
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
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93
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Her TK, Li J, Lin H, Liu D, Root KM, Regal JF, Alejandro EU, Cao R. Circadian Disruption across Lifespan Impairs Glucose Homeostasis and Insulin Sensitivity in Adult Mice. Metabolites 2024; 14:126. [PMID: 38393018 PMCID: PMC10892663 DOI: 10.3390/metabo14020126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 02/07/2024] [Accepted: 02/13/2024] [Indexed: 02/25/2024] Open
Abstract
Circadian rhythm disruption is associated with impaired glucose homeostasis and type 2 diabetes. For example, night shift work is associated with an increased risk of gestational diabetes. However, the effects of chronic circadian disruption since early life on adult metabolic health trajectory remain unknown. Here, using the "Short Day" (SD) mouse model, in which an 8 h/8 h light/dark (LD) cycle was used to disrupt mouse circadian rhythms across the lifespan, we investigated glucose homeostasis in adult mice. Adult SD mice were fully entrained into the 8 h/8 h LD cycle, and control mice were entrained into the 12 h/12 h LD cycle. Under a normal chow diet, female and male SD mice displayed a normal body weight trajectory. However, female but not male SD mice under a normal chow diet displayed glucose intolerance and insulin resistance, which are associated with impaired insulin signaling/AKT in the skeletal muscle and liver. Under high-fat diet (HFD) challenges, male but not female SD mice demonstrated increased body weight gain compared to controls. Both male and female SD mice developed glucose intolerance under HFD. Taken together, these results demonstrate that environmental disruption of circadian rhythms contributes to obesity in a sexually dimorphic manner but increases the risk of glucose intolerance and insulin resistance in both males and females.
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Affiliation(s)
- Tracy K. Her
- Department of Integrative Biology and Physiology, University of Minnesota Medical School, Minneapolis, MN 55455, USA;
| | - Jin Li
- Department of Biomedical Sciences, University of Minnesota Medical School, Duluth, MN 55812, USA; (J.L.); (H.L.); (D.L.); (K.M.R.); (J.F.R.)
- Institute of Neuroscience and Translational Medicine, College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou 466001, China
| | - Hao Lin
- Department of Biomedical Sciences, University of Minnesota Medical School, Duluth, MN 55812, USA; (J.L.); (H.L.); (D.L.); (K.M.R.); (J.F.R.)
- Department of Neuroscience and Cell Biology, Robert Wood Johnson Medical School, Rutgers University, Piscataway, NJ 08854, USA
| | - Dong Liu
- Department of Biomedical Sciences, University of Minnesota Medical School, Duluth, MN 55812, USA; (J.L.); (H.L.); (D.L.); (K.M.R.); (J.F.R.)
- Spencer Center for Vision Research, Department of Ophthalmology, Byers Eye Institute, Stanford University School of Medicine, Palo Alto, CA 94304, USA
| | - Kate M. Root
- Department of Biomedical Sciences, University of Minnesota Medical School, Duluth, MN 55812, USA; (J.L.); (H.L.); (D.L.); (K.M.R.); (J.F.R.)
| | - Jean F. Regal
- Department of Biomedical Sciences, University of Minnesota Medical School, Duluth, MN 55812, USA; (J.L.); (H.L.); (D.L.); (K.M.R.); (J.F.R.)
| | - Emilyn U. Alejandro
- Department of Integrative Biology and Physiology, University of Minnesota Medical School, Minneapolis, MN 55455, USA;
| | - Ruifeng Cao
- Department of Biomedical Sciences, University of Minnesota Medical School, Duluth, MN 55812, USA; (J.L.); (H.L.); (D.L.); (K.M.R.); (J.F.R.)
- Department of Neuroscience and Cell Biology, Robert Wood Johnson Medical School, Rutgers University, Piscataway, NJ 08854, USA
- Department of Neurology, Robert Wood Johnson Medical School, Rutgers University, Piscataway, NJ 08854, USA
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Braithwaite AT, Akbar N, Pezzolla D, Paget D, Krausgruber T, Bock C, Carnicer R, Choudhury RP. Multi-organ single-cell RNA sequencing in mice reveals early hyperglycemia responses that converge on fibroblast dysregulation. FASEB J 2024; 38:e23448. [PMID: 38305779 DOI: 10.1096/fj.202302003r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 12/19/2023] [Accepted: 01/10/2024] [Indexed: 02/03/2024]
Abstract
Diabetes causes a range of complications that can affect multiple organs. Hyperglycemia is an important driver of diabetes-associated complications, mediated by biological processes such as dysfunction of endothelial cells, fibrosis, and alterations in leukocyte number and function. Here, we dissected the transcriptional response of key cell types to hyperglycemia across multiple tissues using single-cell RNA sequencing (scRNA-seq) and identified conserved, as well as organ-specific, changes associated with diabetes complications. By studying an early time point of diabetes, we focus on biological processes involved in the initiation of the disease, before the later organ-specific manifestations had supervened. We used a mouse model of type 1 diabetes and performed scRNA-seq on cells isolated from the heart, kidney, liver, and spleen of streptozotocin-treated and control male mice after 8 weeks and assessed differences in cell abundance, gene expression, pathway activation, and cell signaling across organs and within organs. In response to hyperglycemia, endothelial cells, macrophages, and monocytes displayed organ-specific transcriptional responses, whereas fibroblasts showed similar responses across organs, exhibiting altered metabolic gene expression and increased myeloid-like fibroblasts. Furthermore, we found evidence of endothelial dysfunction in the kidney, and of endothelial-to-mesenchymal transition in streptozotocin-treated mouse organs. In summary, our study represents the first single-cell and multi-organ analysis of early dysfunction in type 1 diabetes-associated hyperglycemia, and our large-scale dataset (comprising 67 611 cells) will serve as a starting point, reference atlas, and resource for further investigating the events leading to early diabetic disease.
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Affiliation(s)
- Adam T Braithwaite
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | - Naveed Akbar
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | - Daniela Pezzolla
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | - Daan Paget
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | - Thomas Krausgruber
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
- Medical University of Vienna, Institute of Artificial Intelligence, Center for Medical Data Science, Vienna, Austria
| | - Christoph Bock
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
- Medical University of Vienna, Institute of Artificial Intelligence, Center for Medical Data Science, Vienna, Austria
| | - Ricardo Carnicer
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | - Robin P Choudhury
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
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95
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Ahmed S, Polis B, Jamwal S, Sanganahalli BG, Kaswan ZM, Islam R, Kim D, Bowers C, Giuliano L, Biederer T, Hyder F, Kaffman A. Transient Impairment in Microglial Function Causes Sex-Specific Deficits in Synaptic and Hippocampal Function in Mice Exposed to Early Adversity. bioRxiv 2024:2024.02.14.580284. [PMID: 38405887 PMCID: PMC10888912 DOI: 10.1101/2024.02.14.580284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/27/2024]
Abstract
Abnormal development and function of the hippocampus are two of the most consistent findings in humans and rodents exposed to early life adversity, with males often being more affected than females. Using the limited bedding (LB) paradigm as a rodent model of early life adversity, we found that male adolescent mice that had been exposed to LB exhibit significant deficits in contextual fear conditioning and synaptic connectivity in the hippocampus, which are not observed in females. This is linked to altered developmental refinement of connectivity, with LB severely impairing microglial-mediated synaptic pruning in the hippocampus of male and female pups on postnatal day 17 (P17), but not in adolescent P33 mice when levels of synaptic engulfment by microglia are substantially lower. Since the hippocampus undergoes intense synaptic pruning during the second and third weeks of life, we investigated whether microglia are required for the synaptic and behavioral aberrations observed in adolescent LB mice. Indeed, transient ablation of microglia from P13-21, in normally developing mice caused sex-specific behavioral and synaptic abnormalities similar to those observed in adolescent LB mice. Furthermore, chemogenetic activation of microglia during the same period reversed the microglial-mediated phagocytic deficits at P17 and restored normal contextual fear conditioning and synaptic connectivity in adolescent LB male mice. Our data support an additional contribution of astrocytes in the sex-specific effects of LB, with increased expression of the membrane receptor MEGF10 and enhanced synaptic engulfment in hippocampal astrocytes of 17-day-old LB females, but not in LB male littermates. This finding suggests a potential compensatory mechanism that may explain the relative resilience of LB females. Collectively, these studies highlight a novel role for glial cells in mediating sex-specific hippocampal deficits in a mouse model of early-life adversity.
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Affiliation(s)
- Sahabuddin Ahmed
- Department of Psychiatry, Yale University School of Medicine, 300 George Street, Suite 901, New Haven CT, 06511, USA
| | - Baruh Polis
- Department of Psychiatry, Yale University School of Medicine, 300 George Street, Suite 901, New Haven CT, 06511, USA
| | - Sumit Jamwal
- Department of Psychiatry, Yale University School of Medicine, 300 George Street, Suite 901, New Haven CT, 06511, USA
| | - Basavaraju G. Sanganahalli
- Department of Radiology & Biomedical Imaging and Magnetic Resonance Research Center, Yale University, New Haven, CT, 06520, USA
- Department of Biomedical Engineering, Yale University, New Haven, CT, 06519, USA
| | - Zoe MacDowell Kaswan
- Department of Psychiatry, Yale University School of Medicine, 300 George Street, Suite 901, New Haven CT, 06511, USA
| | - Rafiad Islam
- Department of Psychiatry, Yale University School of Medicine, 300 George Street, Suite 901, New Haven CT, 06511, USA
| | - Dana Kim
- Department of Psychiatry, Yale University School of Medicine, 300 George Street, Suite 901, New Haven CT, 06511, USA
| | - Christian Bowers
- Department of Psychiatry, Yale University School of Medicine, 300 George Street, Suite 901, New Haven CT, 06511, USA
| | - Lauryn Giuliano
- Department of Psychiatry, Yale University School of Medicine, 300 George Street, Suite 901, New Haven CT, 06511, USA
| | - Thomas Biederer
- Department of Neurology, Yale School of Medicine, 100 College Street, New Haven, CT 06510, USA
| | - Fahmeed Hyder
- Department of Radiology & Biomedical Imaging and Magnetic Resonance Research Center, Yale University, New Haven, CT, 06520, USA
- Department of Biomedical Engineering, Yale University, New Haven, CT, 06519, USA
| | - Arie Kaffman
- Department of Psychiatry, Yale University School of Medicine, 300 George Street, Suite 901, New Haven CT, 06511, USA
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96
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Yan L, Rust BM, Palmer DG. Time-restricted feeding restores metabolic flexibility in adult mice with excess adiposity. Front Nutr 2024; 11:1340735. [PMID: 38425486 PMCID: PMC10902009 DOI: 10.3389/fnut.2024.1340735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Accepted: 01/23/2024] [Indexed: 03/02/2024] Open
Abstract
Introduction Obesity is prevalent with the adult population in the United States. Energy-dense diets and erratic eating behavior contribute to obesity. Time-restricted eating is a dietary strategy in humans that has been advanced to reduce the propensity for obesity. We hypothesized that time-restricted feeding (TRF) would improve metabolic flexibility and normalize metabolic function in adult mice with established excess adiposity. Methods Male C57BL/6NHsd mice were initially fed a high-fat diet (HFD) for 12 weeks to establish excess body adiposity, while control mice were fed a normal diet. Then, the HFD-fed mice were assigned to two groups, either ad libitum HFD or TRF of the HFD in the dark phase (12 h) for another 12 weeks. Results and discussion Energy intake and body fat mass were similar in TRF and HFD-fed mice. TRF restored rhythmic oscillations of respiratory exchange ratio (RER), which had been flattened by the HFD, with greater RER amplitude in the dark phase. Insulin sensitivity was improved and plasma cholesterol and hepatic triacylglycerol were decreased by TRF. When compared to HFD, TRF decreased transcription of circadian genes Per1 and Per2 and genes encoding lipid metabolism (Acaca, Fads1, Fads2, Fasn, Scd1, and Srebf1) in liver. Metabolomic analysis showed that TRF created a profile that was distinct from those of mice fed the control diet or HFD, particularly in altered amino acid profiles. These included aminoacyl-tRNA-biosynthesis, glutathione metabolism, and phenylalanine, tyrosine, and tryptophan biosynthesis pathways. In conclusion, TRF improved metabolic function in adult mice with excess adiposity. This improvement was not through a reduction in body fat mass but through the restoration of metabolic flexibility.
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Affiliation(s)
- Lin Yan
- United States Department of Agriculture, Agricultural Research Service, Grand Forks Human Nutrition Research Center, Grand Forks, ND, United States
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97
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da Fonseca CAR, Prado VC, Paltian JJ, Kazmierczak JC, Schumacher RF, Sari MHM, Cordeiro LM, da Silva AF, Soares FAA, Oliboni RDS, Luchese C, Cruz L, Wilhelm EA. 4-(Phenylselanyl)-2H-chromen-2-one-Loaded Nanocapsule Suspension-A Promising Breakthrough in Pain Management: Comprehensive Molecular Docking, Formulation Design, and Toxicological and Pharmacological Assessments in Mice. Pharmaceutics 2024; 16:269. [PMID: 38399323 PMCID: PMC10892109 DOI: 10.3390/pharmaceutics16020269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 02/10/2024] [Accepted: 02/11/2024] [Indexed: 02/25/2024] Open
Abstract
Therapies for the treatment of pain and inflammation continue to pose a global challenge, emphasizing the significant impact of pain on patients' quality of life. Therefore, this study aimed to investigate the effects of 4-(Phenylselanyl)-2H-chromen-2-one (4-PSCO) on pain-associated proteins through computational molecular docking tests. A new pharmaceutical formulation based on polymeric nanocapsules was developed and characterized. The potential toxicity of 4-PSCO was assessed using Caenorhabditis elegans and Swiss mice, and its pharmacological actions through acute nociception and inflammation tests were also assessed. Our results demonstrated that 4-PSCO, in its free form, exhibited high affinity for the selected receptors, including p38 MAP kinase, peptidyl arginine deiminase type 4, phosphoinositide 3-kinase, Janus kinase 2, toll-like receptor 4, and nuclear factor-kappa β. Both free and nanoencapsulated 4-PSCO showed no toxicity in nematodes and mice. Parameters related to oxidative stress and plasma markers showed no significant change. Both treatments demonstrated antinociceptive and anti-edematogenic effects in the glutamate and hot plate tests. The nanoencapsulated form exhibited a more prolonged effect, reducing mechanical hypersensitivity in an inflammatory pain model. These findings underscore the promising potential of 4-PSCO as an alternative for the development of more effective and safer drugs for the treatment of pain and inflammation.
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Affiliation(s)
- Caren Aline Ramson da Fonseca
- Graduate Program in Biochemistry and Bioprospecting, Biochemical Pharmacology Research Laboratory, Federal University of Pelotas, Pelotas CEP 96010-900, RS, Brazil; (C.A.R.d.F.); (J.J.P.); (C.L.)
| | - Vinicius Costa Prado
- Graduate Program in Pharmaceutical Sciences, Pharmaceutical Technology Laboratory, Federal University of Santa Maria, Santa Maria CEP 97105-900, RS, Brazil;
| | - Jaini Janke Paltian
- Graduate Program in Biochemistry and Bioprospecting, Biochemical Pharmacology Research Laboratory, Federal University of Pelotas, Pelotas CEP 96010-900, RS, Brazil; (C.A.R.d.F.); (J.J.P.); (C.L.)
| | - Jean Carlo Kazmierczak
- Graduate Program in Chemistry, Chemistry Department, Federal University of Santa Maria, Santa Maria CEP 97105-900, RS, Brazil; (J.C.K.); (R.F.S.)
| | - Ricardo Frederico Schumacher
- Graduate Program in Chemistry, Chemistry Department, Federal University of Santa Maria, Santa Maria CEP 97105-900, RS, Brazil; (J.C.K.); (R.F.S.)
| | | | - Larissa Marafiga Cordeiro
- Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, Santa Maria CEP 97105-900, RS, Brazil; (L.M.C.); (A.F.d.S.); (F.A.A.S.)
| | - Aline Franzen da Silva
- Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, Santa Maria CEP 97105-900, RS, Brazil; (L.M.C.); (A.F.d.S.); (F.A.A.S.)
| | - Felix Alexandre Antunes Soares
- Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, Santa Maria CEP 97105-900, RS, Brazil; (L.M.C.); (A.F.d.S.); (F.A.A.S.)
| | - Robson da Silva Oliboni
- Center for Chemical, Pharmaceutical, and Food Sciences, CCQFA, Federal University of Pelotas, Pelotas CEP 96010-900, RS, Brazil;
| | - Cristiane Luchese
- Graduate Program in Biochemistry and Bioprospecting, Biochemical Pharmacology Research Laboratory, Federal University of Pelotas, Pelotas CEP 96010-900, RS, Brazil; (C.A.R.d.F.); (J.J.P.); (C.L.)
| | - Letícia Cruz
- Graduate Program in Pharmaceutical Sciences, Pharmaceutical Technology Laboratory, Federal University of Santa Maria, Santa Maria CEP 97105-900, RS, Brazil;
| | - Ethel Antunes Wilhelm
- Graduate Program in Biochemistry and Bioprospecting, Biochemical Pharmacology Research Laboratory, Federal University of Pelotas, Pelotas CEP 96010-900, RS, Brazil; (C.A.R.d.F.); (J.J.P.); (C.L.)
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98
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Kobayashi H, Tachi A, Hagita S. Time course of histopathology of bleomycin-induced pulmonary fibrosis using an intratracheal sprayer in mice. Exp Anim 2024; 73:41-49. [PMID: 37518267 PMCID: PMC10877150 DOI: 10.1538/expanim.23-0048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 07/23/2023] [Indexed: 08/01/2023] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is a poor prognosis disease that affects approximately 5 million people worldwide, and the detailed mechanisms underlying the pathogenesis of IPF remain unclear. Bleomycin-induced pulmonary fibrosis has been widely used as a representative animal model of IPF that induces fibrosis in lung tissue. The lungs of rodent consist of five lobes and each bronchus enters each lobe of the lung at a different bifurcation angle, path length, and diameter. The method of administration of bleomycin is considered as important thing to establish appropriate animal models. We conducted a time-dependent histopathological study to examine how pulmonary fibrosis develops in each lung lobe when bleomycin was intratracheally sprayed in ICR mice. And we then explored the suitable points for evaluation of anti-fibrotic agents in this model. As a result, we found that homogeneous fibrosis was induced in the 5 lobes of the lungs following initial inflammation. The expression of transforming growth factor (TGF)-β1 and phospho-Smad2 (pSmad2) was observed from Day 1, and their positivity increased until Day 21. In conclusion, we have observed a detailed time course of histological changes in bleomycin-induced pulmonary fibrosis in ICR mice using the aerosolization technique. We found that our protocol can induce a highly homogeneous lesion in the lung and that the most suitable time point to assess anti-fibrotic agents is 14 days after treatment in this model.
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Affiliation(s)
- Hideyuki Kobayashi
- Tokyo New Drug Research Laboratories, Pharmaceutical Division, Kowa Company, Ltd., 2-17-43 Noguchicho, Higashimurayama, Tokyo 189-0022, Japan
| | - Ayami Tachi
- Tokyo New Drug Research Laboratories, Pharmaceutical Division, Kowa Company, Ltd., 2-17-43 Noguchicho, Higashimurayama, Tokyo 189-0022, Japan
| | - Sumihiko Hagita
- Tokyo New Drug Research Laboratories, Pharmaceutical Division, Kowa Company, Ltd., 2-17-43 Noguchicho, Higashimurayama, Tokyo 189-0022, Japan
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99
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Xie Y, Brynildsen JK, Windisch K, Blendy JA. Neural Network Connectivity Following Opioid Dependence is Altered by a Common Genetic Variant in the µ-Opioid Receptor, OPRM1 A118G. J Neurosci 2024; 44:e1492232023. [PMID: 38124015 PMCID: PMC10866092 DOI: 10.1523/jneurosci.1492-23.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 11/24/2023] [Accepted: 11/29/2023] [Indexed: 12/23/2023] Open
Abstract
Opioid use disorder is a chronic, relapsing disease associated with persistent changes in brain plasticity. A common single nucleotide polymorphism (SNP) in the µ-opioid receptor gene, OPRM1 A118G, is associated with altered vulnerability to opioid addiction. Reconfiguration of neuronal connectivity may explain dependence risk in individuals with this SNP. Mice with the equivalent Oprm1 variant, A112G, demonstrate sex-specific alterations in the rewarding properties of morphine and heroin. To determine whether this SNP influences network-level changes in neuronal activity, we compared FOS expression in male and female mice that were opioid-naive or opioid-dependent. Network analyses identified significant differences between the AA and GG Oprm1 genotypes. Based on several graph theory metrics, including small-world analysis and degree centrality, we show that GG females in the opioid-dependent state exhibit distinct patterns of connectivity compared to other groups of the same genotype. Using a network control theory approach, we identified key cortical brain regions that drive the transition between opioid-naive and opioid-dependent brain states; however, these regions are less influential in GG females leading to sixfold higher average minimum energy needed to transition from the acute to the dependent state. In addition, we found that the opioid-dependent brain state is significantly less stable in GG females compared to other groups. Collectively, our findings demonstrate sex- and genotype-specific modifications in local, mesoscale, and global properties of functional brain networks following opioid exposure and provide a framework for identifying genotype differences in specific brain regions that play a role in opioid dependence.
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Affiliation(s)
- Yihan Xie
- Department of Systems Pharmacology and Translational Therapeutics and Perelman School of Medicine, University of Pennsylvania, Philadelphia 19104, Pennsylvania
| | - Julia K Brynildsen
- Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia 19104, Pennsylvania
| | - Kyle Windisch
- Department of Systems Pharmacology and Translational Therapeutics and Perelman School of Medicine, University of Pennsylvania, Philadelphia 19104, Pennsylvania
| | - Julie A Blendy
- Department of Systems Pharmacology and Translational Therapeutics and Perelman School of Medicine, University of Pennsylvania, Philadelphia 19104, Pennsylvania
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100
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Getsy PM, Coffee GA, Kelley TJ, Lewis SJ. Male histone deacetylase 6 (HDAC6) knockout mice have enhanced ventilatory responses to hypoxic challenge. Front Physiol 2024; 14:1332810. [PMID: 38384929 PMCID: PMC10880035 DOI: 10.3389/fphys.2023.1332810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 12/22/2023] [Indexed: 02/23/2024] Open
Abstract
Histone deacetylase 6 (HDAC6) is a class II histone deacetylase that is predominantly localized in the cytoplasm of cells. HDAC6 associates with microtubules and regulates acetylation of tubulin and other proteins. The possibility that HDAC6 participates in hypoxic signaling is supported by evidence that 1) hypoxic gas challenges cause microtubule depolymerization, 2) expression of hypoxia inducible factor alpha (HIF-1α) is regulated by microtubule alterations in response to hypoxia, and 3) inhibition of HDAC6 prevents HIF-1α expression and protects tissue from hypoxic/ischemic insults. The aim of this study was to address whether the absence of HDAC6 alters ventilatory responses during and/or after hypoxic gas challenge (10% O2, 90% N2 for 15 min) in adult male wildtype (WT) C57BL/6 mice and HDAC6 knock-out (KO) mice. Key findings were that 1) baseline values for frequency of breathing, tidal volume, inspiratory and expiratory times, and end expiratory pause were different between knock-out mice and wildtype mice, 2) ventilatory responses during hypoxic challenge were more robust in KO mice than WT mice for recorded parameters including, frequency of breathing, minute ventilation, inspiratory and expiratory durations, peak inspiratory and expiratory flows, and inspiratory and expiratory drives, and 3) responses upon return to room-air were markedly different in KO compared to WT mice for frequency of breathing, minute ventilation, inspiratory and expiratory durations, end expiratory pause (but not end inspiratory pause), peak inspiratory and expiratory flows, and inspiratory and expiratory drives. These data suggest that HDAC6 may have a fundamentally important role in regulating the hypoxic ventilatory response in mice.
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Affiliation(s)
- Paulina M. Getsy
- Department of Pediatrics, Case Western Reserve University, Cleveland, OH, United States
| | - Gregory A. Coffee
- Department of Pediatrics, Case Western Reserve University, Cleveland, OH, United States
| | - Thomas J. Kelley
- Department of Pediatrics, Case Western Reserve University, Cleveland, OH, United States
- Department of Genetics and Genome Sciences, CWRU, Cleveland, OH, United States
| | - Stephen J. Lewis
- Department of Pediatrics, Case Western Reserve University, Cleveland, OH, United States
- Department of Pharmacology, CWRU, Cleveland, OH, United States
- Functional Electrical Stimulation Center, CWRU, Cleveland, OH, United States
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