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Liu K, Zhang P, Zhou L, Han L, Zhao L, Yu X. Research progress in the construction of animal models of autoimmune thyroiditis. Autoimmunity 2024; 57:2317190. [PMID: 38377122 DOI: 10.1080/08916934.2024.2317190] [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: 07/05/2023] [Accepted: 02/03/2024] [Indexed: 02/22/2024]
Abstract
Autoimmune thyroiditis (AIT), also known as Hashimoto's thyroiditis (HT), is an autoimmune disease that is characterised by elevated thyroid-specific antibody titres. The incidence of AIT is increasing year over year, making it urgent to establish a suitable animal model for this condition, in order to better explore its pathogenesis and potential pharmaceutical mechanisms for treatment. Owing to a lack of basic research on this disease, problems such as disparate modelling methods with unclear and varying success rates make it difficult for researchers to obtain effective information on AIT in the short term. This report summarises and analyzes the current literature on AIT and combines actual operability to explain the selection and specific implementation processes behind the uses of different modelling approaches, to provide a better overall understanding of autoimmune thyroid diseases.
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Affiliation(s)
- Ke Liu
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Pei Zhang
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Ling Zhou
- Beijing University of Chinese Medicine, Beijing, China
| | - Lin Han
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Linhua Zhao
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Xiaotong Yu
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
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2
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Andelius TCK, Hansen ESS, Bøgh N, Pedersen MV, Kyng KJ, Henriksen TB, Laustsen C. Hyperpolarized 13C magnetic resonance imaging in neonatal hypoxic-ischemic encephalopathy: First investigations in a large animal model. NMR Biomed 2024; 37:e5110. [PMID: 38317333 DOI: 10.1002/nbm.5110] [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: 06/06/2023] [Revised: 12/03/2023] [Accepted: 01/07/2024] [Indexed: 02/07/2024]
Abstract
Early biomarkers of cerebral damage are essential for accurate prognosis, timely intervention, and evaluation of new treatment modalities in newborn infants with hypoxia and ischemia at birth. Hyperpolarized 13C magnetic resonance imaging (MRI) is a novel method with which to quantify metabolism in vivo with unprecedented sensitivity. We aimed to investigate the applicability of hyperpolarized 13C MRI in a newborn piglet model and whether this method may identify early changes in cerebral metabolism after a standardized hypoxic-ischemic (HI) insult. Six piglets were anesthetized and subjected to a standardized HI insult. Imaging was performed prior to and 2 h after the insult on a 3-T MR scanner. For 13C studies, [1-13C]pyruvate was hyperpolarized in a commercial polarizer. Following intravenous injection, images were acquired using metabolic-specific imaging. HI resulted in a metabolic shift with a decrease in pyruvate to bicarbonate metabolism and an increase in pyruvate to lactate metabolism (lactate/bicarbonate ratio, mean [SD]; 2.28 [0.36] vs. 3.96 [0.91]). This is the first study to show that hyperpolarized 13C MRI can be used in newborn piglets and applied to evaluate early changes in cerebral metabolism after an HI insult.
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Affiliation(s)
- Ted C K Andelius
- Department of Paediatrics, Aarhus University Hospital, Aarhus, Denmark
| | | | - Nikolaj Bøgh
- The MR Research Centre, Aarhus University, Aarhus, Denmark
| | - Mette V Pedersen
- Department of Paediatrics, Aarhus University Hospital, Aarhus, Denmark
| | - Kasper J Kyng
- Department of Paediatrics, Aarhus University Hospital, Aarhus, Denmark
| | - Tine B Henriksen
- Department of Paediatrics, Aarhus University Hospital, Aarhus, Denmark
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Zhai Z, Kong F, Zhu Z, Dai J, Cai J, Xie D, Shen Y, Xu Y, Sun T. Effect and Potential Mechanism of Immunotherapy on Cognitive Deficits in Animal Models of Alzheimer's Disease: A Systematic Review and Meta-Analysis. Am J Geriatr Psychiatry 2024; 32:555-583. [PMID: 38158285 DOI: 10.1016/j.jagp.2023.11.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 11/17/2023] [Accepted: 11/25/2023] [Indexed: 01/03/2024]
Abstract
OBJECTIVE Immunotherapy has been reported to ameliorate Alzheimer's disease (AD) in the animal model; however, the immunologic approaches and mechanisms have not been specifically described. Thus, the systematic review and meta-analysis were conducted to explore the effect and potential mechanism of immunotherapy on AD animal experiments based on behavioral indicators. METHODS According to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses and the Cochrane Collaboration guidelines and the inclusion/exclusion criteria of immunotherapy in animal studies, 15 studies were systematically reviewed after extraction from a collected database of 3,742 publications. Finally, the effect and mechanism of immunotherapy on AD models were described by performing multiple subgroup analyses. RESULTS After immunotherapy, the escape latency was reduced by 18.15 seconds and the number of crossings over the platform location was increased by 1.60 times in the Morris Water Maze. Furthermore, compared to the control group, active and passive immunization could markedly ameliorate learning and memory impairment in 3 × Tg AD animal models, and active immunization could ameliorate the learning and memory ability of the APPswe/PS1ΔE9 AD animal model. Meanwhile, it could be speculated that cognitive dysfunction was improved by immunotherapy, perhaps mainly via reducing Aβ40, Aβ42, and Tau levels, as well as increasing IL-4 levels. CONCLUSION Immunotherapy significantly ameliorated the cognitive dysfunction of AD animal models by assessing behavioral indicators.
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Affiliation(s)
- Zhenwei Zhai
- School of Intelligent Medicine (ZZ, FK, ZZ, JD, JC, TS), Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Fanjing Kong
- School of Intelligent Medicine (ZZ, FK, ZZ, JD, JC, TS), Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Zhishan Zhu
- School of Intelligent Medicine (ZZ, FK, ZZ, JD, JC, TS), Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Jingyi Dai
- School of Intelligent Medicine (ZZ, FK, ZZ, JD, JC, TS), Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Jie Cai
- School of Intelligent Medicine (ZZ, FK, ZZ, JD, JC, TS), Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Danni Xie
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy (DX, YS, TS), Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yuzhao Shen
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy (DX, YS, TS), Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Ying Xu
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province (YX), Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Tao Sun
- School of Intelligent Medicine (ZZ, FK, ZZ, JD, JC, TS), Chengdu University of Traditional Chinese Medicine, Chengdu, China; State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy (DX, YS, TS), Chengdu University of Traditional Chinese Medicine, Chengdu, China.
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4
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King RE, Rademacher J, Ward-Shaw ET, Hu R, Bilger A, Blaine-Sauer S, Spurgeon ME, Thibeault SL, Lambert PF. The Larynx is Protected from Secondary and Vertical Papillomavirus Infection in Immunocompetent Mice. Laryngoscope 2024; 134:2322-2330. [PMID: 38084790 PMCID: PMC11006576 DOI: 10.1002/lary.31228] [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: 09/26/2023] [Revised: 11/16/2023] [Accepted: 11/29/2023] [Indexed: 12/20/2023]
Abstract
OBJECTIVE Mouse papillomavirus MmuPV1 causes both primary and secondary infections of the larynx in immunocompromised mice. Understanding lateral and vertical transmission of papillomavirus to the larynx would benefit patients with recurrent respiratory papillomatosis (RRP). To test the hypothesis that the larynx is uniquely vulnerable to papillomavirus infection, and to further develop a mouse model of RRP, we assessed whether immunocompetent mice were vulnerable to secondary or vertical laryngeal infection with MmuPV1. METHODS Larynges were collected from 405 immunocompetent adult mice that were infected with MmuPV1 in the oropharynx, oral cavity, or anus, and 31 mouse pups born to immunocompetent females infected in the cervicovaginal tract. Larynges were analyzed via polymerase chain reaction (PCR) of lavage fluid or whole tissues for viral DNA, histopathology, and/or in situ hybridization for MmuPV1 transcripts. RESULTS Despite some positive laryngeal lavage PCR screens, all laryngeal tissue PCR and histopathology results were negative for MmuPV1 DNA, transcripts, and disease. There was no evidence for lateral spread of MmuPV1 to the larynges of immunocompetent mice that were infected in the oral cavity, oropharynx, or anus. Pups born to infected mothers were negative for laryngeal MmuPV1 infection from birth through weaning age. CONCLUSION Secondary and vertical laryngeal MmuPV1 infections were not found in immunocompetent mice. Further work is necessary to explore immunologic control of laryngeal papillomavirus infection in a mouse model and to improve preclinical models of RRP. LEVEL OF EVIDENCE NA Laryngoscope, 134:2322-2330, 2024.
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Affiliation(s)
- Renee E. King
- McArdle Laboratory for Cancer Research, Department of Oncology, University of Wisconsin-Madison, Madison, WI
- Division of Surgical Oncology, Department of Surgery, University of Wisconsin-Madison, Madison, WI
- Division of Otolaryngology-Head & Neck Surgery, Department of Surgery, University of Wisconsin-Madison, Madison, WI
| | - Josef Rademacher
- Division of Otolaryngology-Head & Neck Surgery, Department of Surgery, University of Wisconsin-Madison, Madison, WI
| | - Ella T. Ward-Shaw
- McArdle Laboratory for Cancer Research, Department of Oncology, University of Wisconsin-Madison, Madison, WI
| | - Rong Hu
- Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, WI
| | - Andrea Bilger
- McArdle Laboratory for Cancer Research, Department of Oncology, University of Wisconsin-Madison, Madison, WI
| | - Simon Blaine-Sauer
- McArdle Laboratory for Cancer Research, Department of Oncology, University of Wisconsin-Madison, Madison, WI
| | - Megan E. Spurgeon
- McArdle Laboratory for Cancer Research, Department of Oncology, University of Wisconsin-Madison, Madison, WI
| | - Susan L. Thibeault
- Division of Otolaryngology-Head & Neck Surgery, Department of Surgery, University of Wisconsin-Madison, Madison, WI
| | - Paul F. Lambert
- McArdle Laboratory for Cancer Research, Department of Oncology, University of Wisconsin-Madison, Madison, WI
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Carozza G, Zerti D, Tisi A, Ciancaglini M, Maccarrone M, Maccarone R. An overview of retinal light damage models for preclinical studies on age-related macular degeneration: identifying molecular hallmarks and therapeutic targets. Rev Neurosci 2024; 35:303-330. [PMID: 38153807 DOI: 10.1515/revneuro-2023-0130] [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: 10/21/2023] [Accepted: 11/19/2023] [Indexed: 12/30/2023]
Abstract
Age-related macular degeneration (AMD) is a complex, multifactorial disease leading to progressive and irreversible retinal degeneration, whose pathogenesis has not been fully elucidated yet. Due to the complexity and to the multiple features of the disease, many efforts have been made to develop animal models which faithfully reproduce the overall AMD hallmarks or that are able to mimic the different AMD stages. In this context, light damage (LD) rodent models of AMD represent a suitable and reliable approach to mimic the different AMD forms (dry, wet and geographic atrophy) while maintaining the time-dependent progression of the disease. In this review, we comprehensively reported how the LD paradigms reproduce the main features of human AMD. We discuss the capability of these models to broaden the knowledge in AMD research, with a focus on the mechanisms and the molecular hallmarks underlying the pathogenesis of the disease. We also critically revise the remaining challenges and future directions for the use of LD models.
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Affiliation(s)
- Giulia Carozza
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, 67100 L'Aquila, Italy
| | - Darin Zerti
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, 67100 L'Aquila, Italy
| | - Annamaria Tisi
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, 67100 L'Aquila, Italy
| | - Marco Ciancaglini
- Department of Life, Health & Environmental Sciences, University of L'Aquila, 67100 L'Aquila, Italy
| | - Mauro Maccarrone
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, 67100 L'Aquila, Italy
- European Center for Brain Research (CERC)/Santa Lucia Foundation IRCCS, 00143 Rome, Italy
| | - Rita Maccarone
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, 67100 L'Aquila, Italy
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Okabe Y, Murakoshi N, Kurebayashi N, Inoue H, Ito Y, Murayama T, Miyoshi C, Funato H, Ishii K, Xu D, Tajiri K, Qin R, Aonuma K, Murakata Y, Song Z, Wakana S, Yokoyama U, Sakurai T, Aonuma K, Ieda M, Yanagisawa M. An inherited life-threatening arrhythmia model established by screening randomly mutagenized mice. Proc Natl Acad Sci U S A 2024; 121:e2218204121. [PMID: 38621141 DOI: 10.1073/pnas.2218204121] [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: 10/27/2022] [Accepted: 02/27/2024] [Indexed: 04/17/2024] Open
Abstract
Inherited arrhythmia syndromes (IASs) can cause life-threatening arrhythmias and are responsible for a significant proportion of sudden cardiac deaths (SCDs). Despite progress in the development of devices to prevent SCDs, the precise molecular mechanisms that induce detrimental arrhythmias remain to be fully investigated, and more effective therapies are desirable. In the present study, we screened a large-scale randomly mutagenized mouse library by electrocardiography to establish a disease model of IASs and consequently found one pedigree that exhibited spontaneous ventricular arrhythmias (VAs) followed by SCD within 1 y after birth. Genetic analysis successfully revealed a missense mutation (p.I4093V) of the ryanodine receptor 2 gene to be a cause of the arrhythmia. We found an age-related increase in arrhythmia frequency accompanied by cardiomegaly and decreased ventricular contractility in the Ryr2I4093V/+ mice. Ca2+ signaling analysis and a ryanodine binding assay indicated that the mutant ryanodine receptor 2 had a gain-of-function phenotype and enhanced Ca2+ sensitivity. Using this model, we detected the significant suppression of VA following flecainide or dantrolene treatment. Collectively, we established an inherited life-threatening arrhythmia mouse model from an electrocardiogram-based screen of randomly mutagenized mice. The present IAS model may prove feasible for use in investigating the mechanisms of SCD and assessing therapies.
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Affiliation(s)
- Yuta Okabe
- Department of Cardiology, Faculty of Medicine, University of Tsukuba, Tsukuba 305-8575, Japan
| | - Nobuyuki Murakoshi
- Department of Cardiology, Faculty of Medicine, University of Tsukuba, Tsukuba 305-8575, Japan
| | - Nagomi Kurebayashi
- Department of Cellular and Molecular Pharmacology, Juntendo University Graduate School of Medicine, Tokyo 113-8421, Japan
| | - Hana Inoue
- Department of Physiology, Tokyo Medical University, Tokyo 160-8402, Japan
| | - Yoko Ito
- Department of Cardiology, Faculty of Medicine, University of Tsukuba, Tsukuba 305-8575, Japan
| | - Takashi Murayama
- Department of Cellular and Molecular Pharmacology, Juntendo University Graduate School of Medicine, Tokyo 113-8421, Japan
| | - Chika Miyoshi
- International Institute for Integrative Sleep Medicine, University of Tsukuba, Tsukuba 305-8575, Japan
| | - Hiromasa Funato
- International Institute for Integrative Sleep Medicine, University of Tsukuba, Tsukuba 305-8575, Japan
| | - Koichiro Ishii
- Department of Cellular and Molecular Pharmacology, Juntendo University Graduate School of Medicine, Tokyo 113-8421, Japan
| | - Dongzhu Xu
- Department of Cardiology, Faculty of Medicine, University of Tsukuba, Tsukuba 305-8575, Japan
| | - Kazuko Tajiri
- Department of Cardiology, Faculty of Medicine, University of Tsukuba, Tsukuba 305-8575, Japan
| | - Rujie Qin
- Department of Cardiology, Faculty of Medicine, University of Tsukuba, Tsukuba 305-8575, Japan
| | - Kazuhiro Aonuma
- Department of Cardiology, Faculty of Medicine, University of Tsukuba, Tsukuba 305-8575, Japan
| | - Yoshiko Murakata
- Department of Cardiology, Faculty of Medicine, University of Tsukuba, Tsukuba 305-8575, Japan
| | - Zonghu Song
- Department of Cardiology, Faculty of Medicine, University of Tsukuba, Tsukuba 305-8575, Japan
| | - Shigeharu Wakana
- Technology and Development Team for Mouse Phenotype Analysis, RIKEN BioResource Center, Tsukuba 305-0074, Japan
- Department of Animal Experimentation, Foundation for Biomedical Research and Innovation at Kobe, Kobe 650-0047, Japan
| | - Utako Yokoyama
- Department of Physiology, Tokyo Medical University, Tokyo 160-8402, Japan
| | - Takashi Sakurai
- Department of Cellular and Molecular Pharmacology, Juntendo University Graduate School of Medicine, Tokyo 113-8421, Japan
| | - Kazutaka Aonuma
- Department of Cardiology, Faculty of Medicine, University of Tsukuba, Tsukuba 305-8575, Japan
| | - Masaki Ieda
- Department of Cardiology, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Masashi Yanagisawa
- International Institute for Integrative Sleep Medicine, University of Tsukuba, Tsukuba 305-8575, Japan
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Wen C, Chen D, Zhong R, Peng X. Animal models of inflammatory bowel disease: category and evaluation indexes. Gastroenterol Rep (Oxf) 2024; 12:goae021. [PMID: 38634007 PMCID: PMC11021814 DOI: 10.1093/gastro/goae021] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 02/12/2024] [Accepted: 02/29/2024] [Indexed: 04/19/2024] Open
Abstract
Inflammatory bowel disease (IBD) research often relies on animal models to study the etiology, pathophysiology, and management of IBD. Among these models, rats and mice are frequently employed due to their practicality and genetic manipulability. However, for studies aiming to closely mimic human pathology, non-human primates such as monkeys and dogs offer valuable physiological parallels. Guinea pigs, while less commonly used, present unique advantages for investigating the intricate interplay between neurological and immunological factors in IBD. Additionally, New Zealand rabbits excel in endoscopic biopsy techniques, providing insights into mucosal inflammation and healing processes. Pigs, with their physiological similarities to humans, serve as ideal models for exploring the complex relationships between nutrition, metabolism, and immunity in IBD. Beyond mammals, non-mammalian organisms including zebrafish, Drosophila melanogaster, and nematodes offer specialized insights into specific aspects of IBD pathology, highlighting the diverse array of model systems available for advancing our understanding of this multifaceted disease. In this review, we conduct a thorough analysis of various animal models employed in IBD research, detailing their applications and essential experimental parameters. These include clinical observation, Disease Activity Index score, pathological assessment, intestinal barrier integrity, fibrosis, inflammatory markers, intestinal microbiome, and other critical parameters that are crucial for evaluating modeling success and drug efficacy in experimental mammalian studies. Overall, this review will serve as a valuable resource for researchers in the field of IBD, offering insights into the diverse array of animal models available and their respective applications in studying IBD.
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Affiliation(s)
- Changlin Wen
- Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu, Sichuan, P. R. China
| | - Dan Chen
- Acupuncture and Moxibustion School of Teaching, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, P. R. China
| | - Rao Zhong
- Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu, Sichuan, P. R. China
| | - Xi Peng
- Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu, Sichuan, P. R. China
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Gil-Melgosa L, Llombart-Blanco R, Extramiana L, Lacave I, Abizanda G, Miranda E, Agirre X, Prósper F, Pineda-Lucena A, Pons-Villanueva J, Pérez-Ruiz A. HDACi vorinostat protects muscle from degeneration after acute rotator cuff injury in mice. Bone Joint Res 2024; 13:169-183. [PMID: 38618868 PMCID: PMC11017234 DOI: 10.1302/2046-3758.134.bjr-2023-0292.r1] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/16/2024] Open
Abstract
Aims Rotator cuff (RC) injuries are characterized by tendon rupture, muscle atrophy, retraction, and fatty infiltration, which increase injury severity and jeopardize adequate tendon repair. Epigenetic drugs, such as histone deacetylase inhibitors (HDACis), possess the capacity to redefine the molecular signature of cells, and they may have the potential to inhibit the transformation of the fibro-adipogenic progenitors (FAPs) within the skeletal muscle into adipocyte-like cells, concurrently enhancing the myogenic potential of the satellite cells. Methods HDACis were added to FAPs and satellite cell cultures isolated from mice. The HDACi vorinostat was additionally administered into a RC injury animal model. Histological analysis was carried out on the isolated supra- and infraspinatus muscles to assess vorinostat anti-muscle degeneration potential. Results Vorinostat, a HDACi compound, blocked the adipogenic transformation of muscle-associated FAPs in culture, promoting myogenic progression of the satellite cells. Furthermore, it protected muscle from degeneration after acute RC in mice in the earlier muscle degenerative stage after tenotomy. Conclusion The HDACi vorinostat may be a candidate to prevent early muscular degeneration after RC injury.
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Affiliation(s)
- Lara Gil-Melgosa
- Orthopedic Surgery Department of Clínica Universidad de Navarra (CUN) and Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
| | - Rafael Llombart-Blanco
- Orthopedic Surgery Department of Clínica Universidad de Navarra (CUN) and Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
| | - Leire Extramiana
- Technological Innovation Division, Foundation for Applied Medical Research (FIMA), University of Navarra (UNAV) and IdiSNA, Pamplona, Spain
| | | | - Gloria Abizanda
- Technological Innovation Division, Foundation for Applied Medical Research (FIMA), University of Navarra (UNAV) and IdiSNA, Pamplona, Spain
| | | | - Xabier Agirre
- Hemato-Oncology Program, FIMA-UNAV and IdiSNA, Pamplona, Spain
| | - Felipe Prósper
- Hemato-Oncology Program, FIMA-UNAV and IdiSNA, Pamplona, Spain
- Haematology Department, Clinica Universidad de Navarra, Pamplona, Spain
- Centro de Investigación Biomédica en Red en Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Madrid, Spain
| | | | - Juan Pons-Villanueva
- Orthopedic Surgery Department of Clínica Universidad de Navarra (CUN) and Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
| | - Ana Pérez-Ruiz
- Technological Innovation Division, Foundation for Applied Medical Research (FIMA), University of Navarra (UNAV) and IdiSNA, Pamplona, Spain
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9
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Tavitian A, Somech J, Chamlian B, Liberman A, Galindez C, Schipper HM. Craniofacial anomalies in schizophrenia-relevant GFAP.HMOX1 0-12m mice. Anat Rec (Hoboken) 2024. [PMID: 38606671 DOI: 10.1002/ar.25449] [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: 09/21/2023] [Revised: 02/29/2024] [Accepted: 03/25/2024] [Indexed: 04/13/2024]
Abstract
Subtle craniofacial dysmorphology has been reported in schizophrenia patients. This dysmorphology includes midline facial elongation, frontonasal anomalies and a sexually dimorphic deviation from normal directional asymmetry of the face, with male patients showing reduced and female patients showing enhanced facial asymmetry relative to healthy control subjects. GFAP.HMOX10-12m transgenic mice (Mus musculus) that overexpress heme oxygenase-1 in astrocytes recapitulate many schizophrenia-relevant neurochemical, neuropathological and behavioral features. As morphogenesis of the brain, skull and face are highly interrelated, we hypothesized that GFAP.HMOX10-12m mice may exhibit craniofacial anomalies similar to those reported in persons with schizophrenia. We examined craniofacial anatomy in male GFAP.HMOX10-12m mice and wild-type control mice at the early adulthood age of 6-8 months. We used computer vision techniques for the extraction and analysis of mouse head shape parameters from systematically acquired 2D digital images, and confirmed our results with landmark-based geometric morphometrics. We performed skull bone morphometry using digital calipers to take linear distance measurements between known landmarks. Relative to controls, adult male GFAP.HMOX10-12m mice manifested craniofacial dysmorphology including elongation of the nasal bones, alteration of head shape anisotropy and reduction of directional asymmetry in facial shape features. These findings demonstrate that GFAP.HMOX10-12m mice exhibit craniofacial anomalies resembling those described in schizophrenia patients, implicating heme oxygenase-1 in their development. As a preclinical mouse model, GFAP.HMOX10-12m mice provide a novel opportunity for the study of the etiopathogenesis of craniofacial and other anomalies in schizophrenia and related disorders.
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Affiliation(s)
- Ayda Tavitian
- Department of Neurology and Neurosurgery, McGill University, Montreal, Quebec, Canada
- Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Quebec, Canada
| | - Joseph Somech
- Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Quebec, Canada
| | - Badrouyk Chamlian
- Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Quebec, Canada
| | - Adrienne Liberman
- Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Quebec, Canada
| | - Carmela Galindez
- Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Quebec, Canada
| | - Hyman M Schipper
- Department of Neurology and Neurosurgery, McGill University, Montreal, Quebec, Canada
- Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Quebec, Canada
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LaCroix IS, Moore EE, Cralley A, Cendali FI, Dzieciatkowska M, Hom P, Mitra S, Cohen M, Silliman C, Hansen KC, D'Alessandro A. Multiomics Signatures of Coagulopathy in a Polytrauma Swine Model Contrasted with Severe Multisystem Injured Patients. J Proteome Res 2024; 23:1163-1173. [PMID: 38386921 DOI: 10.1021/acs.jproteome.3c00581] [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: 02/24/2024]
Abstract
Trauma-induced coagulopathy (TIC) is a leading contributor to preventable mortality in severely injured patients. Understanding the molecular drivers of TIC is an essential step in identifying novel therapeutics to reduce morbidity and mortality. This study investigated multiomics and viscoelastic responses to polytrauma using our novel swine model and compared these findings with severely injured patients. Molecular signatures of TIC were significantly associated with perturbed coagulation and inflammation systems as well as extensive hemolysis. These results were consistent with patterns observed in trauma patients who had multisystem injuries. Here, intervention using resuscitative endovascular balloon occlusion of the aorta following polytrauma in our swine model revealed distinct multiomics alterations as a function of placement location. Aortic balloon placement in zone-1 worsened ischemic damage and mitochondrial dysfunction, patterns that continued throughout the monitored time course. While placement in zone-III showed a beneficial effect on TIC, it showed an improvement in effective coagulation. Taken together, this study highlights the translational relevance of our polytrauma swine model for investigating therapeutic interventions to correct TIC in patients.
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Affiliation(s)
- Ian S LaCroix
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado 80045, United States
| | - Ernest E Moore
- Department of Surgery, University of Colorado, Anschutz Medical Campus, Aurora, Colorado 80045, United States
- Ernest E Moore Shock Trauma Center at Denver Health, Denver, Colorado 80204, United States
| | - Alexis Cralley
- Department of Surgery, University of Colorado, Anschutz Medical Campus, Aurora, Colorado 80045, United States
| | - Francesca I Cendali
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado 80045, United States
| | - Monika Dzieciatkowska
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado 80045, United States
| | - Patrick Hom
- Department of Surgery, University of Colorado, Anschutz Medical Campus, Aurora, Colorado 80045, United States
| | - Sanchayita Mitra
- Department of Surgery, University of Colorado, Anschutz Medical Campus, Aurora, Colorado 80045, United States
| | - Mitchell Cohen
- Department of Surgery, University of Colorado, Anschutz Medical Campus, Aurora, Colorado 80045, United States
| | - Christopher Silliman
- Vitalant Research Institute, Denver, Colorado 80230, United States
- Department of Pediatrics, University of Colorado, Anschutz Medical Campus, Aurora, Colorado 80045, United States
| | - Kirk C Hansen
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado 80045, United States
| | - Angelo D'Alessandro
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado 80045, United States
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Hayabuchi H, Tokifuji Y, Takahashi H, Amagai M, Yoshimura A, Chikuma S. Disruption of Post-thymic tolerance in Skin-Reactive TCR Transgenic Mice through the Interaction of Lymphopenia and Intestinal Microbiota. Int Immunol 2024:dxae018. [PMID: 38576231 DOI: 10.1093/intimm/dxae018] [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: 01/19/2024] [Indexed: 04/06/2024] Open
Abstract
Autoimmune diseases often arise from conditions where the immune system is compromised. While lymphopenia-induced proliferation (LIP) is crucial for immune system development and maturation, it is also caused by environmental insult, such as infection and becomes a risk factor for autoimmunity in adults. We used Dsg3H1 TCR Transgenic mice, whose T cells are designed to recognize desmogrein-3, a skin antigen, to explore the impact of lymphopenia on post-thymic tolerance. Dsg3H1 mice are known to delete the most highly autoreactive T cells in thymus, and develop only subtle immune-mediated pathology in a steady state. However, we found that a transient lymphopenia by total body irradiation or cyclophosphamide, results in massive dermatitis in Dsg3H1 mice. The symptoms included expansion and development of self-reactive T cells, their differentiation into CD44 high IL-17 producing helper T cells, and severe neutrophilic inflammation. Repopulation of FOXP3+ T regulatory cells after lymphopenia normally occurred, suggesting escape of skin-reactive conventional T cells from control by regulatory T cell. Furthermore, we found that a depletion of the intestinal microbiota by antibiotics prevents the cyclophosphamide induced dermatitis, indicating roles of commensal intestinal microbiota in LIP and Th17 development in vivo. The current data suggested that post thymic tolerance of Dsg3H1 mice is established on a fragile balance in lymphoreplete immune environment and broken by interplay between lymphopenia and intestinal microbiota. The dynamic phenotypes observed in Dsg3H1 mice prompts a reevaluation of opportunistic lymphopenia together with microbiota as pivotal environmental factors, impacting individuals with genetic predispositions of autoimmune diseases.
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Affiliation(s)
- Hodaka Hayabuchi
- Department of Microbiology and Immunology, Keio University School of Medicine 35 Shinanomachi, East Lecture Hall 4F, Shinjuku, Tokyo, 160-8582 JAPAN
| | - Yukiko Tokifuji
- Department of Microbiology and Immunology, Keio University School of Medicine 35 Shinanomachi, East Lecture Hall 4F, Shinjuku, Tokyo, 160-8582 JAPAN
| | - Hayato Takahashi
- Department of Dermatology, Keio University School of Medicine 35 Shinanomachi, Shinjuku, Tokyo, 160-8582 JAPAN
| | - Masayuki Amagai
- Department of Dermatology, Keio University School of Medicine 35 Shinanomachi, Shinjuku, Tokyo, 160-8582 JAPAN
| | - Akihiko Yoshimura
- Department of Microbiology and Immunology, Keio University School of Medicine 35 Shinanomachi, East Lecture Hall 4F, Shinjuku, Tokyo, 160-8582 JAPAN
| | - Shunsuke Chikuma
- Department of Microbiology and Immunology, Keio University School of Medicine 35 Shinanomachi, East Lecture Hall 4F, Shinjuku, Tokyo, 160-8582 JAPAN
- Institute of Biotechnology at the College of Life Sciences and Medicines, National Tsing-Hua University, 101-2 Kuang-Fu Road, Hsinchu, 300044 TAIWAN
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12
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Dzidzishvili L, Fernández-Valle ME, Molera DM, Calvo E, López-Torres II. High-resolution Magnetic Resonance Imaging can predict osteoarthritic progression after medial meniscus posterior root injury: randomized in vivo experimental study in a rabbit model. J ISAKOS 2024:S2059-7754(24)00069-5. [PMID: 38583525 DOI: 10.1016/j.jisako.2024.03.015] [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: 10/31/2023] [Revised: 03/25/2024] [Accepted: 03/29/2024] [Indexed: 04/09/2024]
Abstract
IMPORTANCE The field of meniscal root preservation has undergone significant advancement over the past decades; however, the challenge remains to fully understand whether meniscal root repair can ultimately arrest or delay osteoarthritic changes. OBJECTIVE To assess longitudinal changes in articular cartilage, subchondral bone, and progression to meniscal extrusion (ME) using high-resolution magnetic resonance imaging (MRI). METHODS Medial meniscus posterior root tear was surgically induced in 39 New Zealand White rabbits. Animals were randomly assigned into three experimental groups: partial meniscectomy after root tear (PM, n=13); root tear left in situ (CT, n=13); and transtibial root repair (RR, n=13). Contralateral limbs were used as healthy controls. High resolution 4.7 Tesla MRI of the knee joint was performed at baseline, after 2-, and 4-months of post-surgery. Cartilage thickness was calculated in medial and lateral compartments. In addition, the evaluation of ME, subchondral bone edema, and the healing potential after root repair were assessed. RESULTS Progressive cartilage thinning, ME, and subchondral bone edema were evident in all 3 study groups after 4-months of follow-up. The mean cartilage thickness in the PM group was 0.53mm (± 0.050), 0.57mm (± 0.05) in the CT group, and 0.60mm (± 0.08) in the RR group. The PM group exhibited significantly higher cartilage loss when compared to the CT and RR groups (p<0.001). In addition, progressive ME and subchondral bone edema were associated with a more severe cartilage loss at the final follow-up. CONCLUSION Meniscal root repair did not halt but reduces the progression of osteoarthritis (OA). Degenerative changes worsened at a rapid rate in the PM group compared to the RR and CT groups. Early cartilage swelling, persistent subchondral edema, and progressive ME predicted more severe progression to knee OA in the CT and RR groups. LEVEL OF EVIDENCE II.
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Affiliation(s)
- Lika Dzidzishvili
- Department of Orthopaedic Surgery and Traumatology. Hospital Universitario Fundación Jiménez Díaz, IIS-Fundación Jiménez Díaz, Universidad Autónoma de Madrid, Av. De los Reyes Católicos, 2, 28040 Madrid. Spain.
| | | | - David Moreno Molera
- Bioimaging Research Support Center- Universidad Complutense Madrid, Paseo Juan XXIII, 1. 28040 Madrid, Spain
| | - Emilio Calvo
- Department of Orthopaedic Surgery and Traumatology. Hospital Universitario Fundación Jiménez Díaz, IIS-Fundación Jiménez Díaz, Universidad Autónoma de Madrid. Av. De los Reyes Católicos, 2, 28040 Madrid. Spain
| | - Irene Isabel López-Torres
- Department of Orthopaedic Surgery and Traumatology. Hospital Universitario Fundación Jiménez Díaz, IIS-Fundación Jiménez Díaz, Universidad Autónoma de Madrid, Av. De los Reyes Católicos, 2, 28040 Madrid. Spain
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13
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Arellano G, Loda E, Chen Y, Neef T, Cogswell AC, Primer G, Joy G, Kaschke K, Wills S, Podojil JR, Popko B, Balabanov R, Miller SD. Interferon-γ controls aquaporin 4-specific Th17 and B cells in neuromyelitis optica spectrum disorder. Brain 2024; 147:1344-1361. [PMID: 37931066 PMCID: PMC10994540 DOI: 10.1093/brain/awad373] [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: 01/27/2023] [Revised: 09/27/2023] [Accepted: 10/21/2023] [Indexed: 11/08/2023] Open
Abstract
Neuromyelitis optica spectrum disorder (NMOSD) is a CNS autoimmune inflammatory disease mediated by T helper 17 (Th17) and antibody responses to the water channel protein, aquaporin 4 (AQP4), and associated with astrocytopathy, demyelination and axonal loss. Knowledge about disease pathogenesis is limited and the search for new therapies impeded by the absence of a reliable animal model. In our work, we determined that NMOSD is characterized by decreased IFN-γ receptor signalling and that IFN-γ depletion in AQP4201-220-immunized C57BL/6 mice results in severe clinical disease resembling human NMOSD. Pathologically, the disease causes autoimmune astrocytic and CNS injury secondary to cellular and humoral inflammation. Immunologically, the absence of IFN-γ allows for increased expression of IL-6 in B cells and activation of Th17 cells, and generation of a robust autoimmune inflammatory response. Consistent with NMOSD, the experimental disease is exacerbated by administration of IFN-β, whereas repletion of IFN-γ, as well as therapeutic targeting of IL-17A, IL-6R and B cells, ameliorates it. We also demonstrate that immune tolerization with AQP4201-220-coupled poly(lactic-co-glycolic acid) nanoparticles could both prevent and effectively treat the disease. Our findings enhance the understanding of NMOSD pathogenesis and provide a platform for the development of immune tolerance-based therapies, avoiding the limitations of the current immunosuppressive therapies.
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Affiliation(s)
- Gabriel Arellano
- Department of Microbiology-Immunology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Eileah Loda
- Department of Neurology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Yanan Chen
- Department of Biology, Loyola University Chicago, Chicago, IL 60660, USA
| | - Tobias Neef
- Department of Microbiology-Immunology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Andrew C Cogswell
- Department of Microbiology-Immunology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Grant Primer
- Department of Microbiology-Immunology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Godwin Joy
- Department of Biology, Loyola University Chicago, Chicago, IL 60660, USA
| | - Kevin Kaschke
- Department of Biology, Loyola University Chicago, Chicago, IL 60660, USA
| | - Samantha Wills
- Department of Biology, Loyola University Chicago, Chicago, IL 60660, USA
| | - Joseph R Podojil
- Department of Microbiology-Immunology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
- COUR Pharmaceutical Development Company, Inc., Northbrook, IL 60077, USA
| | - Brian Popko
- Department of Neurology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Roumen Balabanov
- Department of Neurology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Stephen D Miller
- Department of Microbiology-Immunology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
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14
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Subramanian A, Bhogoju S, Snaith O, Miller AD, Newell H, Wang D, Siegal G, Oborny K, Baumann-Berg J, Viljoen H. Continuous Low-Intensity Ultrasound Improves Cartilage Repair in Rabbit Model of Subchondral Injury. Tissue Eng Part A 2024; 30:357-366. [PMID: 38318848 DOI: 10.1089/ten.tea.2023.0246] [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: 02/07/2024] Open
Abstract
Subchondral drilling (SD), a bone marrow stimulation technique, is used to repair cartilage lesions that lack regenerative potential. Cartilage repair outcomes upon SD are typically fibrocartilaginous in nature with inferior functionality. The lack of cues to foster the chondrogenic differentiation of egressed mesenchymal stromal cells upon SD can be attributed for the poor outcomes. Continuous low-intensity ultrasound (cLIUS) at 3.8 MHz is proposed as a treatment modality for improving cartilage repair outcomes upon marrow stimulation. Bilateral defects were created by SD on the femoral medial condyle of female New Zealand white rabbits (n = 12), and the left joint received cLIUS treatment (3.8 MHz, 3.5 Vpp, 8 min/application/day) and the contralateral right joint served as the control. On day 7 postsurgery, synovial fluid was aspirated, and the cytokine levels were assessed by Quantibody™ assay. Rabbits were euthanized at 8 weeks and outcomes were assessed macroscopically and histologically. Defect areas in the right joints exhibited boundaries, incomplete fill, irregular cartilage surfaces, loss of glycosaminoglycan (GAG), and absence of chondrocytes. In contrast, the repaired defect area in the joints that received cLIUS showed complete fill, positive staining for GAG with rounded chondrocyte morphology, COL2A1 staining, and columnar organization. Synovial fluid collected from cLIUS-treated left knee joints had lower levels of IL1, TNFα, and IFNγ when compared to untreated right knee joints, alluding to the potential of cLIUS to mitigate early inflammation. Further at 8 weeks, left knee joints (n = 12) consistently scored higher on the O'Driscoll scale, with a higher percent hyaline cartilage score. No adverse impact on bone or change in the joint space was noted. Upon a single exposure of cLIUS to TNFα-treated cells, nuclear localization of pNFκB and SOX9 was visualized by double immunofluorescence and the expression of markers associated with the NFκB pathway was assayed by quantitative real-time polymerase chain reaction. cLIUS extends its chondroprotective effects by titrating pNFκB levels, preventing its nuclear translocation, while maintaining the expression of SOX9, the collagen II transcription factor. Our combined results demonstrate that healing of chondral defects treated with marrow stimulation by SD can be accelerated by employing cLIUS regimen that possesses chondroinductive and chondroprotective properties. Impact statement Repair of cartilage represents an unsolved biomedical burden. In vitro, continuous low-intensity ultrasound (cLIUS) has been demonstrated to possess chondroinductive and chondroprotective potential. To our best knowledge, the use of cLIUS to improve cartilage repair outcomes upon marrow stimulation, in vivo, has not been reported and our work reported here fills that gap. Our results demonstrated enhanced cartilage repair outcomes under cLIUS (3.8 MHz) in a rabbit model of subchondral injury by subchondral drilling. Enhanced repair stemmed from mesenchymal stem cell differentiation in vivo and the subsequent synthesis of articular cartilage-specific matrix.
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Affiliation(s)
- Anuradha Subramanian
- Department of Chemical and Materials Engineering, The University of Alabama-Huntsville, Huntsville, Alabama, USA
| | - Sarayu Bhogoju
- Department of Chemical and Materials Engineering, The University of Alabama-Huntsville, Huntsville, Alabama, USA
| | - Oraine Snaith
- Life Sciences Annex, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | - April D Miller
- Department of Chemical and Biomolecular Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | - Heather Newell
- Department of Chemical and Biomolecular Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | - Denzhi Wang
- Life Sciences Annex, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | - Gene Siegal
- Life Sciences Annex, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | - Katelin Oborny
- Life Sciences Annex, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | - Jesse Baumann-Berg
- Life Sciences Annex, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | - Hendrik Viljoen
- Department of Chemical and Biomolecular Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
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15
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Cvancara DJ, de Leon JA, Baertsch HC, Jaleel Z, Kinney G, Martinez V, Bhatt NK. Neurophysiology of the Superior Laryngeal Nerve in an In Vivo Rat Model. Laryngoscope 2024; 134:1778-1784. [PMID: 37787452 DOI: 10.1002/lary.31087] [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: 04/05/2023] [Revised: 09/15/2023] [Accepted: 09/19/2023] [Indexed: 10/04/2023]
Abstract
OBJECTIVE The superior laryngeal nerve (SLN) is fundamental in laryngeal sensation, cough reflex, and pitch control. SLN injury has substantial consequences including altered sensation, aspiration, and dysphonia. To date, in vivo measurement of the SLN remains elusive. The purpose of this study was to assess the feasibility of recording motor and sensory evoked potentials in a rat SLN model. METHODS Twenty-two rat hemi-laryngeal preparations (n = 11) were obtained from 4-month-old Sprague-Dawley rats and included in this study. Compound motor action potentials (CMAPs) and motor unit number estimation (MUNE) were calculated by stimulating the SLN at the point of medial extension near the carotid artery and by placing a recording electrode on the cricothyroid muscle. Sensory response was determined through stimulation of the SLN and laryngoscopic visualization of a laryngeal adductor reflex (LAR). SLN and cricothyroid muscle cross-sections were stained and histologic morphometrics were quantified. RESULTS Laryngeal evoked potentials were successfully obtained in all trials. Mean CMAP latency and negative durations were 0.99 ± 0.57 ms and 1.49 ± 0.57 ms, respectively. The median MUNE was 2.06 (IQR 1.88, 3.51). LAR was induced with a mean intensity of 0.69 ± 0.20 mV. Mean axon count, myelin thickness, and g-ratio were 681 ± 192.2, 1.72 ± 0.26, and 0.45 ± 0.04, respectively. CONCLUSIONS This study demonstrates the feasibility of recording evoked response potentials following SLN stimulation. We hypothesize that this work will provide a tractable animal model to study changes in laryngeal sensation and cricothyroid motor function with aging, neurodegenerative disease, aspiration, or nerve injury. LEVEL OF EVIDENCE NA Laryngoscope, 134:1778-1784, 2024.
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Affiliation(s)
- David J Cvancara
- Department of Otolaryngology - Head and Neck Surgery, University of Washington School of Medicine, Seattle, WA, U.S.A
| | - Julio A de Leon
- Department of Otolaryngology - Head and Neck Surgery, University of Washington School of Medicine, Seattle, WA, U.S.A
| | - Hans C Baertsch
- Keck School of Medicine, University of Southern California, Los Angeles, California, U.S.A
| | - Zaroug Jaleel
- Department of Otolaryngology - Head and Neck Surgery, University of Washington School of Medicine, Seattle, WA, U.S.A
| | - Greg Kinney
- Department of Rehabilitation Medicine, University of Washington School of Medicine, Seattle, WA, U.S.A
| | - Vicente Martinez
- Department of Rehabilitation Medicine, University of Washington School of Medicine, Seattle, WA, U.S.A
| | - Neel K Bhatt
- Department of Otolaryngology - Head and Neck Surgery, University of Washington School of Medicine, Seattle, WA, U.S.A
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16
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Negasi ZH, Nommi N, Liu C, Tesfaigzi Y. Persistence of emphysema following cessation of cigarette smoke exposure requires a susceptibility factor. Am J Physiol Lung Cell Mol Physiol 2024; 326:L431-L439. [PMID: 38349118 DOI: 10.1152/ajplung.00342.2023] [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: 11/09/2023] [Revised: 02/01/2024] [Accepted: 02/02/2024] [Indexed: 02/21/2024] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is caused by cigarette smoke (CS) exposure but can often be progressive even in former smokers. Exposure of mice to CS for 22 wk causes emphysema, but whether emphysema persists after cessation of CS exposure is not clear. The purpose of this study was to determine whether emphysema persists in mice following a recovery period of 22 wk and whether a susceptibility factor, such as deficiency in the Bcl-2-interacting killer (Bik), is required for this persistence. Therefore, bik+/+ and bik-/- mice at 6-10 wk of age were exposed to 250 mg/m3 total particulate matter of CS or filtered air (FA) for 3 or 22 wk and were kept in FA for an additional 22 wk. Lungs were lavaged to quantify inflammatory cells, and sections were stained with hematoxylin and eosin to assess severity of emphysema. Exposure to CS for 3 wk increased the number of inflammatory cells in bik-/- mice compared with bik+/+ mice but not at 22 wk of exposure. At 22 wk of CS exposure, extent of emphysema was similar in bik+/+ and bik-/- mice. However, when mice were exposed to CS over the first 22 wk and were kept in FA for an additional 22 wk, emphysema remained similar in bik+/+ mice but was enhanced in bik-/- mice. These findings link increased inflammation with persistent emphysematous changes even after smoking cessation and demonstrate that a preexisting susceptibility condition is required to sustain enhanced emphysema that was initiated by long-term CS exposure.NEW & NOTEWORTHY Exposure of mice to cigarette smoke (CS) for 22 wk causes emphysema, but whether emphysema persists after an additional period of 6 mo after cessation of CS exposure has not been reported. In addition, the role of preexisting susceptibility in enhancing the persistence of CS-induced emphysema after exposure to CS has stopped has not been shown. The present study shows that a preexisting susceptibility must be present to enhance CS-induced emphysema after cessation of CS exposure.
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Affiliation(s)
- Zerihun Hailemariam Negasi
- Pulmonary Critical Care Medicine Division, Brigham and Women's Hospital and Harvard Medical School, Harvard University, Boston, Massachusetts, United States
| | - Naomi Nommi
- Pulmonary Critical Care Medicine Division, Brigham and Women's Hospital and Harvard Medical School, Harvard University, Boston, Massachusetts, United States
| | - Congjian Liu
- Pulmonary Critical Care Medicine Division, Brigham and Women's Hospital and Harvard Medical School, Harvard University, Boston, Massachusetts, United States
| | - Yohannes Tesfaigzi
- Pulmonary Critical Care Medicine Division, Brigham and Women's Hospital and Harvard Medical School, Harvard University, Boston, Massachusetts, United States
- Chronic Obstructive Pulmonary Disease Program, Lovelace Respiratory Research Institute, Albuquerque, New Mexico, United States
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Ortiz-Sánchez BJ, Juárez-Avelar I, Andrade-Meza A, Mendoza-Rodríguez MG, Chirino YI, Monroy-Pérez E, Paniagua-Contreras GL, Rodriguez-Sosa M. Periodontitis exacerbation during pregnancy in mice: Role of macrophage migration inhibitory factor as a key inductor. J Periodontal Res 2024; 59:267-279. [PMID: 37990413 DOI: 10.1111/jre.13211] [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: 06/12/2023] [Revised: 10/12/2023] [Accepted: 10/30/2023] [Indexed: 11/23/2023]
Abstract
OBJECTIVE The present study was designed to investigate the role of macrophage migration inhibitory factor (MIF) in the exacerbation of pregestational periodontal disease (PGPD). BACKGROUND Periodontitis (PT) is a severe stage of periodontal disease characterized by inflammation of the supporting tissues of the teeth, which usually worsens during pregnancy. MIF is a proinflammatory cytokine that is significantly elevated in periodontitis, both at the beginning and at the end of pregnancy. Although periodontitis usually presents with greater severity during pregnancy, the participation of MIF in the evolution of periodontitis has not been established. METHODS To analyze the relevance of MIF in the exacerbation of PGPD, we employed a model of PGPD in WT and Mif-/- mice, both with a BALB/c genetic background. PT was induced with nylon suture ligatures placed supramarginally around the second upper right molar. For PGPD, PT was induced 2 weeks before mating. We evaluated histological changes and performed histometric analysis of the clinical attachment loss, relative expression of MMP-2 and MMP-13 by immunofluorescence, and relative expression of the cytokines mif, tnf-α, ifn-γ, and il-17 by quantitative real-time polymerase chain reaction (qRT-PCR). RESULTS Our data revealed that periodontal tissue from PGPD WT mice produced a twofold increase in MIF compared with PT WT mice. Moreover, the evolution of periodontitis in Mif-/- mice was less severe than in PGDP WT mice. Periodontal tissue from Mif-/- mice with PGPD produced 80% less TNF-α and no IFN-γ, as well as 50% lower expression of matrix metalloproteinase (MMP)-2 and 25% less MMP-13 compared to WT PGDP mice. CONCLUSIONS Our study suggests that MIF plays an important role in the exacerbation of periodontitis during pregnancy and that MIF is partially responsible for the inflammation associated with the severity of periodontitis during pregnancy.
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Affiliation(s)
- Betsaida J Ortiz-Sánchez
- Carrera de Cirujano Dentista, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México (UNAM), Tlalnepantla, Mexico
- Programa de Doctorado en Ciencias Biológicas, Universidad Nacional Autónoma de México (UNAM), Ciudad de México, Mexico
| | - Imelda Juárez-Avelar
- Programa de Doctorado en Ciencias Biológicas, Universidad Nacional Autónoma de México (UNAM), Ciudad de México, Mexico
- Laboratorio de Inmunidad Innata. Unidad de Investigación en Biomedicina, Facultad de Estudios Superiores Iztacala, UNAM, Tlalnepantla, Mexico
| | - Antonio Andrade-Meza
- Laboratorio de Inmunidad Innata. Unidad de Investigación en Biomedicina, Facultad de Estudios Superiores Iztacala, UNAM, Tlalnepantla, Mexico
- Programa de Doctorado en Ciencias Biomédicas, Universidad Nacional Autónoma de México (UNAM), Ciudad de México, Mexico
| | - Mónica Gabriela Mendoza-Rodríguez
- Laboratorio de Inmunoparasitología. Unidad de Investigación en Biomedicina, Facultad de Estudios Superiores Iztacala, UNAM, Tlalnepantla, Mexico
| | - Yolanda I Chirino
- Laboratorio de Carcinogénesis y Toxicología. Unidad de Investigación en Biomedicina, Facultad de Estudios Superiores Iztacala, UNAM, Tlalnepantla, Mexico
| | - Eric Monroy-Pérez
- Facultad de Estudios Superiores Iztacala, UNAM, Tlalnepantla, Mexico
| | | | - Miriam Rodriguez-Sosa
- Programa de Doctorado en Ciencias Biomédicas, Universidad Nacional Autónoma de México (UNAM), Ciudad de México, Mexico
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18
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Jackson MG, Lightman SL, Robinson ESJ. Characterisation of behaviours relevant to apathy syndrome in the aged male rat. Behav Brain Res 2024; 466:114977. [PMID: 38570074 DOI: 10.1016/j.bbr.2024.114977] [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: 02/07/2024] [Revised: 03/22/2024] [Accepted: 03/29/2024] [Indexed: 04/05/2024]
Abstract
Apathy is a complex psychiatric syndrome characterised by motivational deficit, emotional blunting and cognitive changes. It occurs alongside a broad range of neurological disorders, but also occurs in otherwise healthy ageing. Despite its clinical prevalence, apathy does not yet have a designated treatment strategy. Generation of a translational animal model of apathy syndrome would facilitate the development of novel treatments. Given the multidimensional nature of apathy, a model cannot be achieved with a single behavioural test. Using a battery of behavioural tests we investigated whether aged rats exhibit behavioural deficits across different domains relevant to apathy. Using the effort for reward and progressive ratio tasks we found that aged male rats (21-27 months) show intact reward motivation. Using the novelty supressed feeding test and position-based object exploration we found aged rats showed increased anxiety-like behaviour inconsistent with emotional blunting. The sucrose preference test and reward learning assay showed intact reward sensitivity and reward-related cognition in aged rats. However, using a bowl-digging version of the probabilistic reversal learning task, we found a deficit in cognitive flexibility in aged rats that did not translate across to a touchscreen version of the task. While these data reveal important changes in cognitive flexibility and anxiety associated with ageing, aged rats do not show deficits across other behavioural domains relevant to apathy. This suggests that aged rats are not a suitable model for age-related apathy syndrome. These findings contrast with previous work in mice, revealing important species differences in behaviours relevant to apathy syndrome in ageing.
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Affiliation(s)
- Megan G Jackson
- School of Physiology, Pharmacology and Neuroscience, University of Bristol, Bristol, UK.
| | - Stafford L Lightman
- Bristol Medical School: Translational Health Sciences, University of Bristol, Bristol, UK
| | - Emma S J Robinson
- School of Physiology, Pharmacology and Neuroscience, University of Bristol, Bristol, UK
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Gandasasmita N, Li J, Loane DJ, Semple BD. Experimental Models of Hospital-Acquired Infections After Traumatic Brain Injury: Challenges and Opportunities. J Neurotrauma 2024; 41:752-770. [PMID: 37885226 DOI: 10.1089/neu.2023.0453] [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: 10/28/2023] Open
Abstract
Patients hospitalized after a moderate or severe traumatic brain injury (TBI) are at increased risk of nosocomial infections, including bacterial pneumonia and other upper respiratory tract infections. Infections represent a secondary immune challenge for vulnerable TBI patients that can lead to increased morbidity and poorer long-term prognosis. This review first describes the clinical significance of infections after TBI, delving into the known mechanisms by which a TBI can alter systemic immunological responses towards an immunosuppressive state, leading to promotion of increased vulnerability to infections. Pulmonary dysfunction resulting from respiratory tract infections is considered in the context of neurotrauma, including the bidirectional relationship between the brain and lungs. Turning to pre-clinical modeling, current laboratory approaches to study experimental TBI and lung infections are reviewed, to highlight findings from the limited key studies to date that have incorporated both insults. Then, practical decisions for the experimental design of animal studies of post-injury infections are discussed. Variables associated with the host animal, the infectious agent (e.g., species, strain, dose, and administration route), as well as the timing of the infection relative to the injury model are important considerations for model development. Together, the purpose of this review is to highlight the significant clinical need for increased pre-clinical research into the two-hit insult of a hospital-acquired infection after TBI to encourage further scientific enquiry in the field.
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Affiliation(s)
| | - Jian Li
- Biomedicine Discovery Institute, Monash University, Melbourne, Victoria, Australia
- Department of Microbiology, Monash University, Melbourne, Victoria, Australia
| | - David J Loane
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
- Department of Anesthesiology and Shock, Trauma and Anesthesiology Research (STAR) Center, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Bridgette D Semple
- Department of Neuroscience, Monash University, Melbourne, Victoria, Australia
- Department of Neurology, Alfred Health, Prahran, Victoria, Australia
- Department of Medicine (Royal Melbourne Hospital), The University of Melbourne, Parkville, Victoria, Australia
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Jiao D, Xu Y, Tian F, Zhou Y, Chen D, Wang Y. Establishment of animal models and behavioral studies for autism spectrum disorders. J Int Med Res 2024; 52:3000605241245293. [PMID: 38619175 PMCID: PMC11022675 DOI: 10.1177/03000605241245293] [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: 11/17/2023] [Accepted: 03/19/2024] [Indexed: 04/16/2024] Open
Abstract
In recent years, the incidence of autism spectrum disorder (ASD) has increased, but the etiology and pathogenesis remain unclear. In this narrative review, we review and systematically summarize the methods used to construct animal models to study ASD and the related behavioral studies based on recent literature. Utilization of various ASD animal models can complement research on the etiology, pathogenesis, and core behaviors of ASD, providing information and a foundation for further basic research and clinical treatment of ASD.
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Affiliation(s)
- Daiyan Jiao
- Department of Rehabilitation, Affiliated Hai'an Hospital of Nantong University, Nantong, China
- Department of Acupuncture, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Yingkai Xu
- Department of Medicine, Hai’an Hospital of Traditional Chinese Medicine Affiliated to Nanjing University of Chinese Medicine, Nantong, China
| | - Fei Tian
- Department of Medical Imaging, Hai’an Hospital of Traditional Chinese Medicine Affiliated to Nanjing University of Chinese Medicine, Nantong, China
| | - Yaqing Zhou
- Department of Critical Care Medicine, Affiliated Hai’an Hospital of Nantong University, Nantong, China
| | - Dong Chen
- Department of Acupuncture, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Yujue Wang
- Department of Paediatrics, Rugao Hospital of Traditional Chinese Medicine, Nantong, China
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21
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Kim HS, Lee D, Shen S. Endoplasmic reticular stress as an emerging therapeutic target for chronic pain: a narrative review. Br J Anaesth 2024; 132:707-724. [PMID: 38378384 PMCID: PMC10925894 DOI: 10.1016/j.bja.2024.01.007] [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: 07/27/2023] [Revised: 12/11/2023] [Accepted: 01/05/2024] [Indexed: 02/22/2024] Open
Abstract
Chronic pain is a severely debilitating condition with enormous socioeconomic costs. Current treatment regimens with nonsteroidal anti-inflammatory drugs (NSAIDs), steroids, or opioids have been largely unsatisfactory with uncertain benefits or severe long-term side effects. This is mainly because chronic pain has a multifactorial aetiology. Although conventional pain medications can alleviate pain by keeping several dysfunctional pathways under control, they can mask other underlying pathological causes, ultimately worsening nerve pathologies and pain outcome. Recent preclinical studies have shown that endoplasmic reticulum (ER) stress could be a central hub for triggering multiple molecular cascades involved in the development of chronic pain. Several ER stress inhibitors and unfolded protein response modulators, which have been tested in randomised clinical trials or apprpoved by the US Food and Drug Administration for other chronic diseases, significantly alleviated hyperalgesia in multiple preclinical pain models. Although the role of ER stress in neurodegenerative disorders, metabolic disorders, and cancer has been well established, research on ER stress and chronic pain is still in its infancy. Here, we critically analyse preclinical studies and explore how ER stress can mechanistically act as a central node to drive development and progression of chronic pain. We also discuss therapeutic prospects, benefits, and pitfalls of using ER stress inhibitors and unfolded protein response modulators for managing intractable chronic pain. In the future, targeting ER stress to impact multiple molecular networks might be an attractive therapeutic strategy against chronic pain refractory to steroids, NSAIDs, or opioids. This novel therapeutic strategy could provide solutions for the opioid crisis and public health challenge.
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Affiliation(s)
- Harper S Kim
- Medical Scientist Training Program, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Donghwan Lee
- Department of Anesthesiology, Critical Care and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Shiqian Shen
- Department of Anesthesiology, Critical Care and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
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22
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Mahmood NMA. Protective effects of Azilsartan against cyclophosphamide-induced ovarian toxicity in rats model. Toxicol Res (Camb) 2024; 13:tfae027. [PMID: 38450178 PMCID: PMC10913384 DOI: 10.1093/toxres/tfae027] [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: 12/02/2023] [Revised: 01/23/2024] [Accepted: 01/31/2024] [Indexed: 03/08/2024] Open
Abstract
Background Cyclophosphamide (CP) is an effective alkylating anticancer agent that is widely used in cancer chemotherapy, and it can cause ototoxicity and infertility in women. Objectives So, this study aimed to evaluate the protective effects of Azilsartan (AZ) as an antioxidant and anti-inflammatory agent in a rat model of CP-induced ovarian toxicity. Materials and Methods After receiving the 28 female Wister rats, they were acclimatized in proper environmental conditions for a week and then randomly divided into four groups based on the study protocol. After 15 days of the experiment, they were sacrificed, and organs were collected for biomarker detection (Using the ELISA technique) and histopathological analysis. Results The level of IL-10 was significantly (P < 0.05) decreased in all treated groups compared to control hostile groups, while the TNF-α level was significantly (P < 0.05) increased in AZ (220.67 ± 7.88 ng/mL) and AZ + CP groups (221.78 ± 9.11 ng/mL) compared to control negative/CP groups. Regarding the oxidative biomarker level, a significant increase was only found in the AZ + CP group (176.02 ± 6.71 nmol/mL) compared to the control negative group. On the other hand, histopathological findings revealed that ovarian sections in animals that received a single dose of CP had severe ovarian atrophy with significant follicular regression and deterioration, as well as depletion of stromal supportive tissues. Conclusions Azilsartan drastically reduced CP-induced ovarian toxicity in vivo by enhancing oxidative stress and inhibiting inflammatory effects in ovarian cells.
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Affiliation(s)
- Naza Mohammed Ali Mahmood
- Department of Pharmacology & Toxicology, College of Pharmacy, University of Sulaimani, Madam Meteeran Street, Sulaimaniyah 0046, Iraq
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Xu J, Yan S, Xia C, Xue J, Yu W, Yan Y, Yin Z. Comparison and discussion of behavior and pathology of four kinds of cerebral palsy disease models. Int J Dev Neurosci 2024; 84:143-153. [PMID: 38323913 DOI: 10.1002/jdn.10315] [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: 05/24/2023] [Revised: 12/26/2023] [Accepted: 01/05/2024] [Indexed: 02/08/2024] Open
Abstract
Explore the differences in behavioral and pathological manifestations of rat models of cerebral palsy made by different methods and discuss what types of studies these models are suitable for. Behavioral evaluation and pathological section observation were used to observe and evaluate the model. Conclusion: except for the absence of data of bilateral common carotid artery ligation rats, the other three methods could all achieve a successful cerebral palsy disease model for both behavioral and pathological. For researchers, the selection of intraperitoneal infection model in pregnant rats or unilateral ischemia and hypoxia model in infant rats is sufficient to meet the experimental needs, whereas the selection of the combined method for modeling does not show enough advantages, which not only causes the waste of financial and human resources but also increases the possibility of experimental error made by intervention factors.
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Affiliation(s)
- Jinyan Xu
- Hebei University of Chinese Medicine, Shijiazhuang, China
| | - Siyang Yan
- Guangxi Medical University, Nanning, China
| | - Chen Xia
- Hebei University of Chinese Medicine, Shijiazhuang, China
| | - Jianyi Xue
- Hebei University of Chinese Medicine, Shijiazhuang, China
| | - Wentao Yu
- Hebei University of Chinese Medicine, Shijiazhuang, China
| | - Yuanjie Yan
- Hebei University of Chinese Medicine, Shijiazhuang, China
| | - Zhenjin Yin
- Hebei University of Chinese Medicine, Shijiazhuang, China
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Geilen J, Kainz M, Zapletal B, Naka A, Tichy J, Jäger W, Böhmdorfer M, Zeitlinger M, Schultz MJ, Stamm T, Ritschl V, Geleff S, Tschernko E. Antimicrobial Drug Penetration Is Enhanced by Lung Tissue Inflammation and Injury. Am J Respir Crit Care Med 2024; 209:829-839. [PMID: 38099833 DOI: 10.1164/rccm.202306-0974oc] [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: 06/07/2023] [Accepted: 12/15/2023] [Indexed: 04/04/2024] Open
Abstract
Rationale: Pneumonia is a frequent and feared complication in intubated critically ill patients. Tissue concentrations of antimicrobial drugs need to be sufficiently high to treat the infection and also prevent development of bacterial resistance. It is uncertain whether pulmonary inflammation and injury affect antimicrobial drug penetration into lung tissue.Objectives: To determine and compare tissue and BAL fluid concentrations of ceftaroline fosamil and linezolid in a model of unilateral acute lung injury in pigs and to evaluate whether dose adjustment is necessary to reach sufficient antimicrobial concentrations in injured lung tissue.Methods: After induction of unilateral acute lung injury, ceftaroline fosamil and linezolid were administered intravenously. Drug concentrations were measured in lung tissue through microdialysis and in blood and BAL fluid samples during the following 8 hours. The primary endpoint was the tissue concentration area under the concentration curve in the first 8 hours (AUC0-8 h) of the two antimicrobial drugs.Measurements and Main Results: In 10 pigs, antimicrobial drug concentrations were higher in inflamed and injured lung tissue compared with those in uninflamed and uninjured lung tissue (median ceftaroline fosamil AUC0-8 h [and interquartile range] = 26.7 mg ⋅ h ⋅ L-1 [19.7-39.0] vs. 16.0 mg ⋅ h ⋅ L-1 [13.6-19.9], P = 0.02; median linezolid AUC0-8 h 76.0 mg ⋅ h ⋅ L-1 [68.1-96.0] vs. 54.6 mg ⋅ h ⋅ L-1 [42.7-60.9], P = 0.01), resulting in a longer time above the minimal inhibitory concentration and in higher peak concentrations and dialysate/plasma ratios. Penetration into BAL fluid was excellent for both antimicrobials, but without left-to-right differences (ceftaroline fosamil, P = 0.78; linezolid, P = 1.00).Conclusions: Tissue penetration of two commonly used antimicrobial drugs for pneumonia is enhanced by early lung tissue inflammation and injury, resulting in longer times above the minimal inhibitory concentration. Thus, lung tissue inflammation ameliorates antimicrobial drug penetration during the acute phase.
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Affiliation(s)
- Johannes Geilen
- Division of Cardiothoracic and Vascular Anesthesia and Intensive Care Medicine, Department of Anesthesia, General Intensive Care, and Pain Management
| | - Matthias Kainz
- Division of Cardiothoracic and Vascular Anesthesia and Intensive Care Medicine, Department of Anesthesia, General Intensive Care, and Pain Management
| | - Bernhard Zapletal
- Division of Cardiothoracic and Vascular Anesthesia and Intensive Care Medicine, Department of Anesthesia, General Intensive Care, and Pain Management
| | - Asami Naka
- Division of Cardiothoracic and Vascular Anesthesia and Intensive Care Medicine, Department of Anesthesia, General Intensive Care, and Pain Management
| | - Johanna Tichy
- Division of Cardiothoracic and Vascular Anesthesia and Intensive Care Medicine, Department of Anesthesia, General Intensive Care, and Pain Management
| | - Walter Jäger
- Department of Pharmaceutical Sciences, University of Vienna, Vienna, Austria
| | - Michaela Böhmdorfer
- Department of Pharmaceutical Sciences, University of Vienna, Vienna, Austria
| | - Markus Zeitlinger
- Department of Clinical Pharmacology, Clinical Pharmacokinetics/Pharmacogenetics, and Imaging
| | - Marcus J Schultz
- Division of Cardiothoracic and Vascular Anesthesia and Intensive Care Medicine, Department of Anesthesia, General Intensive Care, and Pain Management
- Department of Intensive Care, Amsterdam University Medical Centers, location "AMC", University of Amsterdam, Amsterdam, the Netherlands; and
| | - Tanja Stamm
- Institute of Outcomes Research, Center for Medical Data Science, and
- Ludwig Boltzmann Institute for Arthritis and Rehabilitation, Vienna, Austria
| | - Valentin Ritschl
- Institute of Outcomes Research, Center for Medical Data Science, and
- Ludwig Boltzmann Institute for Arthritis and Rehabilitation, Vienna, Austria
| | - Silvana Geleff
- Department of Pathology, Medical University of Vienna, Vienna, Austria
| | - Edda Tschernko
- Division of Cardiothoracic and Vascular Anesthesia and Intensive Care Medicine, Department of Anesthesia, General Intensive Care, and Pain Management
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25
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Been LE, Halliday AR, Blossom SM, Bien EM, Bernhard AG, Roth GE, Domenech Rosario KI, Pollock KB, Abramenko PE, Behbehani LM, Pascal GJ, Kelly ME. Long-Term Oral Tamoxifen Administration Decreases Brain-Derived Neurotrophic Factor in the Hippocampus of Female Long-Evans Rats. Cancers (Basel) 2024; 16:1373. [PMID: 38611051 PMCID: PMC11010888 DOI: 10.3390/cancers16071373] [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: 12/22/2023] [Revised: 01/24/2024] [Accepted: 03/29/2024] [Indexed: 04/14/2024] Open
Abstract
Tamoxifen, a selective estrogen receptor modulator (SERM), is commonly used as an adjuvant drug therapy for estrogen-receptor-positive breast cancers. Though effective at reducing the rate of cancer recurrence, patients often report unwanted cognitive and affective side effects. Despite this, the impacts of chronic tamoxifen exposure on the brain are poorly understood, and rodent models of tamoxifen exposure do not replicate the chronic oral administration seen in patients. We, therefore, used long-term ad lib consumption of medicated food pellets to model chronic tamoxifen exposure in a clinically relevant way. Adult female Long-Evans Hooded rats consumed tamoxifen-medicated food pellets for approximately 12 weeks, while control animals received standard chow. At the conclusion of the experiment, blood and brain samples were collected for analyses. Blood tamoxifen levels were measured using a novel ultra-performance liquid chromatography-tandem mass spectrometry assay, which found that this administration paradigm produced serum levels of tamoxifen similar to those in human patients. In the brain, brain-derived neurotrophic factor (BDNF) was visualized in the hippocampus using immunohistochemistry. Chronic oral tamoxifen treatment resulted in a decrease in BDNF expression across several regions of the hippocampus. These findings provide a novel method of modeling and measuring chronic oral tamoxifen exposure and suggest a putative mechanism by which tamoxifen may cause cognitive and behavioral changes reported by patients.
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Affiliation(s)
- Laura E. Been
- Department of Psychology and Neuroscience Program, Haverford College, Haverford, PA 19041, USA; (A.R.H.); (S.M.B.); (E.M.B.); (A.G.B.); (G.E.R.); (K.I.D.R.); (K.B.P.); (P.E.A.); (L.M.B.); (G.J.P.); (M.E.K.)
| | - Amanda R. Halliday
- Department of Psychology and Neuroscience Program, Haverford College, Haverford, PA 19041, USA; (A.R.H.); (S.M.B.); (E.M.B.); (A.G.B.); (G.E.R.); (K.I.D.R.); (K.B.P.); (P.E.A.); (L.M.B.); (G.J.P.); (M.E.K.)
| | - Sarah M. Blossom
- Department of Psychology and Neuroscience Program, Haverford College, Haverford, PA 19041, USA; (A.R.H.); (S.M.B.); (E.M.B.); (A.G.B.); (G.E.R.); (K.I.D.R.); (K.B.P.); (P.E.A.); (L.M.B.); (G.J.P.); (M.E.K.)
| | - Elena M. Bien
- Department of Psychology and Neuroscience Program, Haverford College, Haverford, PA 19041, USA; (A.R.H.); (S.M.B.); (E.M.B.); (A.G.B.); (G.E.R.); (K.I.D.R.); (K.B.P.); (P.E.A.); (L.M.B.); (G.J.P.); (M.E.K.)
| | - Anya G. Bernhard
- Department of Psychology and Neuroscience Program, Haverford College, Haverford, PA 19041, USA; (A.R.H.); (S.M.B.); (E.M.B.); (A.G.B.); (G.E.R.); (K.I.D.R.); (K.B.P.); (P.E.A.); (L.M.B.); (G.J.P.); (M.E.K.)
| | - Grayson E. Roth
- Department of Psychology and Neuroscience Program, Haverford College, Haverford, PA 19041, USA; (A.R.H.); (S.M.B.); (E.M.B.); (A.G.B.); (G.E.R.); (K.I.D.R.); (K.B.P.); (P.E.A.); (L.M.B.); (G.J.P.); (M.E.K.)
| | - Karina I. Domenech Rosario
- Department of Psychology and Neuroscience Program, Haverford College, Haverford, PA 19041, USA; (A.R.H.); (S.M.B.); (E.M.B.); (A.G.B.); (G.E.R.); (K.I.D.R.); (K.B.P.); (P.E.A.); (L.M.B.); (G.J.P.); (M.E.K.)
| | - Karlie B. Pollock
- Department of Psychology and Neuroscience Program, Haverford College, Haverford, PA 19041, USA; (A.R.H.); (S.M.B.); (E.M.B.); (A.G.B.); (G.E.R.); (K.I.D.R.); (K.B.P.); (P.E.A.); (L.M.B.); (G.J.P.); (M.E.K.)
| | - Petra E. Abramenko
- Department of Psychology and Neuroscience Program, Haverford College, Haverford, PA 19041, USA; (A.R.H.); (S.M.B.); (E.M.B.); (A.G.B.); (G.E.R.); (K.I.D.R.); (K.B.P.); (P.E.A.); (L.M.B.); (G.J.P.); (M.E.K.)
| | - Leily M. Behbehani
- Department of Psychology and Neuroscience Program, Haverford College, Haverford, PA 19041, USA; (A.R.H.); (S.M.B.); (E.M.B.); (A.G.B.); (G.E.R.); (K.I.D.R.); (K.B.P.); (P.E.A.); (L.M.B.); (G.J.P.); (M.E.K.)
| | - Gabriel J. Pascal
- Department of Psychology and Neuroscience Program, Haverford College, Haverford, PA 19041, USA; (A.R.H.); (S.M.B.); (E.M.B.); (A.G.B.); (G.E.R.); (K.I.D.R.); (K.B.P.); (P.E.A.); (L.M.B.); (G.J.P.); (M.E.K.)
| | - Mary Ellen Kelly
- Department of Psychology and Neuroscience Program, Haverford College, Haverford, PA 19041, USA; (A.R.H.); (S.M.B.); (E.M.B.); (A.G.B.); (G.E.R.); (K.I.D.R.); (K.B.P.); (P.E.A.); (L.M.B.); (G.J.P.); (M.E.K.)
- Neuroscience Program, University of Pennsylvania, Philadelphia, PA 19104, USA
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Roy D, Subramaniam B, Chong WC, Bornhorst M, Packer RJ, Nazarian J. Zebrafish-A Suitable Model for Rapid Translation of Effective Therapies for Pediatric Cancers. Cancers (Basel) 2024; 16:1361. [PMID: 38611039 PMCID: PMC11010887 DOI: 10.3390/cancers16071361] [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: 03/15/2024] [Revised: 03/27/2024] [Accepted: 03/27/2024] [Indexed: 04/14/2024] Open
Abstract
Pediatric cancers are the leading cause of disease-related deaths in children and adolescents. Most of these tumors are difficult to treat and have poor overall survival. Concerns have also been raised about drug toxicity and long-term detrimental side effects of therapies. In this review, we discuss the advantages and unique attributes of zebrafish as pediatric cancer models and their importance in targeted drug discovery and toxicity assays. We have also placed a special focus on zebrafish models of pediatric brain cancers-the most common and difficult solid tumor to treat.
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Affiliation(s)
- Debasish Roy
- Center for Genetic Medicine Research, Children’s National Hospital, Washington, DC 20012, USA; (D.R.)
| | - Bavani Subramaniam
- Center for Genetic Medicine Research, Children’s National Hospital, Washington, DC 20012, USA; (D.R.)
| | - Wai Chin Chong
- Center for Genetic Medicine Research, Children’s National Hospital, Washington, DC 20012, USA; (D.R.)
| | - Miriam Bornhorst
- Center for Genetic Medicine Research, Children’s National Hospital, Washington, DC 20012, USA; (D.R.)
| | - Roger J. Packer
- Center for Genetic Medicine Research, Children’s National Hospital, Washington, DC 20012, USA; (D.R.)
| | - Javad Nazarian
- Center for Genetic Medicine Research, Children’s National Hospital, Washington, DC 20012, USA; (D.R.)
- DIPG/DMG Research Center Zurich, Children’s Research Center, Department of Pediatrics, University Children’s Hospital Zürich, 8032 Zurich, Switzerland
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27
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Morante-Valverde R, Usategui A, López-Díaz M, Grau M, Luna-Paredes M, de Atauri ÁGD, Pablos JL, Antón-Pacheco JL. Biodegradable polydioxanone stents: histologic and structural effects in an experimental model of tracheal stenosis. Eur J Cardiothorac Surg 2024; 65:ezae095. [PMID: 38471110 DOI: 10.1093/ejcts/ezae095] [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: 10/10/2023] [Revised: 01/02/2024] [Accepted: 03/11/2024] [Indexed: 03/14/2024] Open
Abstract
OBJECTIVES To evaluate the biologic impact of polydioxanone (PDO) stenting in an animal model of inflammatory tracheal stenosis (TS). Additionally, to compare these results with those obtained in the same model without a stent and after placing one PDO stent in a healthy trachea. METHODS 40 adult NZ rabbits were distributed into 3 groups: Group A, 8 animals with a healthy trachea and a PDO stent; group B, 17 rabbits with a TS and no stent; and group C, 15 animals with TS and a PDO stent. Histopathological studies included Masson's trichrome staining for submucosal fibrosis and Safranin O to assess structural integrity of cartilage. Morphometric analyses were performed in the 3 groups. RESULTS Stent placement was successful in every case. Histological studies did not show a significant increase in tracheal wall collagen area and cartilage structure was not modified in those rabbits with a PDO stent, even in a TS scenario. Stent implantation permitted recovery of normal tracheal lumen levels in the TS model. CONCLUSIONS PDO stenting in the normal trachea and in a model of TS neither caused increase in the collagen matrix nor modification of the cartilaginous support. Additionally, radial force exhibited by PDO stents was effective in restoring normal tracheal lumen when placed in a stenotic lesion. These findings suggest that they may be safe and useful in the setting of an acquired TS.
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Affiliation(s)
- Rocío Morante-Valverde
- Pediatric Surgery Division & Pediatric Airway Unit, Hospital Universitario 12 de Octubre, Avda. de Córdoba s/n, Madrid 28041, Universidad Complutense de Madrid, Spain
| | - Alicia Usategui
- Inflammatory and Autoimmune Diseases Research Group, Instituto de Investigación Hospital U, 12 de Octubre (imas12), Avda. de Córdoba s/n, Madrid, 28041, Spain
| | - María López-Díaz
- Pediatric Surgery Division & Pediatric Airway Unit, Hospital Universitario 12 de Octubre, Avda. de Córdoba s/n, Madrid 28041, Universidad Complutense de Madrid, Spain
| | - Montserrat Grau
- Research Center, Veterinary Unit, Instituto de Investigación Hospital U, 12 de Octubre (imas12)' Avda. de Córdoba s/n, Madrid, 28041, Spain
| | - MaCarmen Luna-Paredes
- Pulmonary Unit, Division of Pediatrics, Hospital Universitario 12 de Octubre, Avda. de Córdoba s/n, Madrid, 28041, Spain
| | - Álvaro Gimeno-Díaz de Atauri
- Pulmonary Unit, Division of Pediatrics, Hospital Universitario 12 de Octubre, Avda. de Córdoba s/n, Madrid, 28041, Spain
| | - José L Pablos
- Inflammatory and Autoimmune Diseases Research Group, Instituto de Investigación Hospital U, 12 de Octubre (imas12), Avda. de Córdoba s/n, Madrid, 28041, Spain
| | - Juan L Antón-Pacheco
- Pediatric Surgery Division & Pediatric Airway Unit, Hospital Universitario 12 de Octubre, Avda. de Córdoba s/n, Madrid 28041, Universidad Complutense de Madrid, Spain
- Inflammatory and Autoimmune Diseases Research Group, Instituto de Investigación Hospital U, 12 de Octubre (imas12), Avda. de Córdoba s/n, Madrid, 28041, Spain
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28
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Guan X, Wang Y, Li W, Mu W, Tang Y, Wang M, Seyam A, Yang Y, Pan L, Hou T. The Role of Macrophage Efferocytosis in the Pathogenesis of Apical Periodontitis. Int J Mol Sci 2024; 25:3854. [PMID: 38612664 PMCID: PMC11011522 DOI: 10.3390/ijms25073854] [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: 02/24/2024] [Revised: 03/25/2024] [Accepted: 03/27/2024] [Indexed: 04/14/2024] Open
Abstract
Macrophages (Mφs) play a crucial role in the homeostasis of the periapical immune micro-environment caused by bacterial infection. Mφ efferocytosis has been demonstrated to promote the resolution of multiple infected diseases via accelerating Mφ polarization into M2 type. However, the Mφ efferocytosis-apical periodontitis (AP) relationship has not been elucidated yet. This study aimed to explore the role of Mφ efferocytosis in the pathogenesis of AP. Clinical specimens were collected to determine the involvement of Mφ efferocytosis in the periapical region via immunohistochemical and immunofluorescence staining. For a further understanding of the moderator effect of Mφ efferocytosis in the pathogenesis of AP, both an in vitro AP model and in vivo AP model were treated with ARA290, a Mφ efferocytosis agonist. Histological staining, micro-ct, flow cytometry, RT-PCR and Western blot analysis were performed to detect the inflammatory status, alveolar bone loss and related markers in AP models. The data showed that Mφ efferocytosis is observed in the periapical tissues and enhancing the Mφ efferocytosis ability could effectively promote AP resolution via facilitating M2 Mφ polarization. Collectively, our study demonstrates the functional importance of Mφ efferocytosis in AP pathology and highlights that accelerating Mφ efferocytosis via ARA290 could serve as an adjuvant therapeutic strategy for AP.
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Affiliation(s)
- Xiaoyue Guan
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi’an Jiaotong University, Xi’an 710004, China (A.S.)
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi’an Jiaotong University, Xi’an 710004, China
- Department of Cariology and Endodontics, College of Stomatology, Xi’an Jiaotong University, Xi’an 710004, China
| | - Yuting Wang
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi’an Jiaotong University, Xi’an 710004, China (A.S.)
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi’an Jiaotong University, Xi’an 710004, China
- Department of Cariology and Endodontics, College of Stomatology, Xi’an Jiaotong University, Xi’an 710004, China
| | - Wenlan Li
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi’an Jiaotong University, Xi’an 710004, China (A.S.)
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi’an Jiaotong University, Xi’an 710004, China
- Department of Cariology and Endodontics, College of Stomatology, Xi’an Jiaotong University, Xi’an 710004, China
| | - Wenli Mu
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi’an Jiaotong University, Xi’an 710004, China (A.S.)
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi’an Jiaotong University, Xi’an 710004, China
- Department of Cariology and Endodontics, College of Stomatology, Xi’an Jiaotong University, Xi’an 710004, China
| | - Yifei Tang
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi’an Jiaotong University, Xi’an 710004, China (A.S.)
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi’an Jiaotong University, Xi’an 710004, China
- Department of Cariology and Endodontics, College of Stomatology, Xi’an Jiaotong University, Xi’an 710004, China
| | - Mingfei Wang
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi’an Jiaotong University, Xi’an 710004, China (A.S.)
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi’an Jiaotong University, Xi’an 710004, China
- Department of Cariology and Endodontics, College of Stomatology, Xi’an Jiaotong University, Xi’an 710004, China
| | - Abdelrahman Seyam
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi’an Jiaotong University, Xi’an 710004, China (A.S.)
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi’an Jiaotong University, Xi’an 710004, China
- Department of Cariology and Endodontics, College of Stomatology, Xi’an Jiaotong University, Xi’an 710004, China
| | - Yao Yang
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi’an Jiaotong University, Xi’an 710004, China (A.S.)
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi’an Jiaotong University, Xi’an 710004, China
- Department of Cariology and Endodontics, College of Stomatology, Xi’an Jiaotong University, Xi’an 710004, China
| | - Lifei Pan
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi’an Jiaotong University, Xi’an 710004, China (A.S.)
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi’an Jiaotong University, Xi’an 710004, China
- Department of Cariology and Endodontics, College of Stomatology, Xi’an Jiaotong University, Xi’an 710004, China
| | - Tiezhou Hou
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi’an Jiaotong University, Xi’an 710004, China (A.S.)
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi’an Jiaotong University, Xi’an 710004, China
- Department of Cariology and Endodontics, College of Stomatology, Xi’an Jiaotong University, Xi’an 710004, China
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Lui PPY, Liang Z, Tan RM, Yung PSH. Establishment of a Mouse Degenerative Model of Patellar Tendinopathy with Upregulation of Inflammation. Int J Mol Sci 2024; 25:3847. [PMID: 38612656 PMCID: PMC11011606 DOI: 10.3390/ijms25073847] [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: 01/23/2024] [Revised: 03/21/2024] [Accepted: 03/26/2024] [Indexed: 04/14/2024] Open
Abstract
There is no mouse model of patellar tendinopathy. This study aimed to establish a mouse inflammatory and degenerative patellar tendon injury model, which will facilitate research on patellar tendinopathy using advanced molecular tools including transgenic models. Collagenase at different doses (low dose (LD), medium dose (MD), high dose (HD)) or saline was injected over the mouse patellar tendon. At weeks 1, 2, 4, and 8 post-injection, the tendons were harvested for histology and further examined by micro-computed tomography (microCT) imaging at week 8. The optimal dose group and the saline group were further evaluated by immunohistochemical staining, gait pattern, and biomechanical properties. The histopathological score increased dose-dependently post-collagenase injection. Ectopic mineralization was observed and increased with collagenase dose. The LD group was selected for further analysis. The expression of IL-10, TNF-α, and MMP-1 significantly increased post-injection. The changes of limb idleness index (ΔLII) compared to preinjury state were significantly higher, while the ultimate load, stiffness, ultimate stress, and maximum Young's modulus were significantly lower in the LD group compared to the saline group. A mouse inflammatory degenerative model of patellar tendon injury resembling tendinopathy was established as indicated by the dose-dependent increase in tendon histopathology, ectopic calcification, decrease in biomechanical properties, and pain-associated gait changes.
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Affiliation(s)
- Pauline Po Yee Lui
- Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
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Sobkowiak A, Fluks M, Kosyl E, Milewski R, Szpila M, Tamborski S, Szkulmowski M, Ajduk A. The number of nuclei in compacted embryos, assessed by optical coherence microscopy, is a non-invasive and robust marker of mouse embryo quality. Mol Hum Reprod 2024; 30:gaae012. [PMID: 38407286 PMCID: PMC10978378 DOI: 10.1093/molehr/gaae012] [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: 01/15/2024] [Indexed: 02/27/2024] Open
Abstract
Optical coherence microscopy (OCM) visualizes nuclei in live, unlabeled cells. As most cells are uninucleated, the number of nuclei in embryos may serve as a proxy of the cell number, providing important information on developmental status of the embryo. Importantly, no other non-invasive method currently allows for the cell number count in compacted embryos. We addressed the question of whether OCM, by providing the number of nuclei in compacted mouse embryos, may help evaluate embryo quality. We subjected compacted embryonic Day 3 (E3.0: 72 h after onset of insemination) mouse embryos to OCM scanning and correlated nuclei number and developmental potential. Implantation was assessed using an outgrowth assay (in vitro model meant to reflect embryonic ability to implant in vivo). Embryos with more cells at E3.0 (>18 cells) were more likely to reach the blastocyst stage by E4.0 and E5.0 (P ≪ 0.001) and initiate hatching by E5.0 (P < 0.05) than those with fewer cells (<12 cells). Moreover, the number of cells at E3.0 strongly correlated with the total number of cells in E4.0 and E5.0 embryos (ρ = 0.71, P ≪ 0.001 and ρ = 0.61, P ≪ 0.001, respectively), also when only E4.0 and E5.0 blastocysts were considered (ρ = 0.58, P ≪ 0.001 and ρ = 0.56, P ≪ 0.001, respectively). Additionally, we observed a strong correlation between the number of cells at E3.0 and the number of trophectoderm cells in E4.0 and E5.0 blastocysts (ρ = 0.59, P ≪ 0.001 and ρ = 0.57, P ≪ 0.001, respectively). Importantly, embryos that had more cells at E3.0 (>18 cells) were also more likely to implant in vitro than their counterparts with fewer cells (<12 cells; P ≪ 0.001). Finally, we tested the safety of OCM imaging, demonstrating that OCM scanning affected neither the amount of reactive oxygen species nor mitochondrial activity in the embryos. OCM also did not hinder their preimplantation development, ability to implant in vitro, or to develop to term after transfer to recipient females. Our data indicate that OCM imaging provides important information on embryo quality. As the method seems to be safe for embryos, it could be a valuable addition to the current repertoire of embryo evaluation methods. However, our study was conducted only on mouse embryos, so the proposed protocol would require optimization in order to be applied in other species.
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Affiliation(s)
- Aleksandra Sobkowiak
- Department of Embryology, Institute of Developmental Biology and Biomedical Sciences, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | - Monika Fluks
- Department of Embryology, Institute of Developmental Biology and Biomedical Sciences, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | - Ewa Kosyl
- Department of Embryology, Institute of Developmental Biology and Biomedical Sciences, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | - Robert Milewski
- Department of Biostatistics and Medical Informatics, Medical University of Bialystok, Białystok, Poland
| | - Marcin Szpila
- Department of Embryology, Institute of Developmental Biology and Biomedical Sciences, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | - Szymon Tamborski
- Department of Biophotonics and Optical Engineering, Institute of Physics, Faculty of Physics, Astronomy, and Informatics, Nicolaus Copernicus University in Torun, Toruń, Poland
| | - Maciej Szkulmowski
- Department of Biophotonics and Optical Engineering, Institute of Physics, Faculty of Physics, Astronomy, and Informatics, Nicolaus Copernicus University in Torun, Toruń, Poland
| | - Anna Ajduk
- Department of Embryology, Institute of Developmental Biology and Biomedical Sciences, Faculty of Biology, University of Warsaw, Warsaw, Poland
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Stangel-Wójcikiewicz K, Murawski M, Schwarz T, Skotniczny K, Fuchs A, Wolski J, Radwan-Pragłowska J, Janus Ł, Piątkowski M, Kot M, Wróbel A, Wojtysiak D, Urbaniec P. Pelvic Organ Prolapse Reconstruction with the Chitosan-Based Novel Haemostatic Agent in Ovine Model-Preliminary Report. Int J Mol Sci 2024; 25:3801. [PMID: 38612610 PMCID: PMC11011902 DOI: 10.3390/ijms25073801] [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: 01/08/2024] [Revised: 01/29/2024] [Accepted: 03/26/2024] [Indexed: 04/14/2024] Open
Abstract
This prospective study aimed to assess the feasibility of chitosan biomaterial and subcutaneous gel implantation in an ovine model, with implications for women with genital prolapse. Twenty-four ewes were divided into four groups (n = 6 per group): chitosan type B, chitosan type C, chitosan unmodified injections, and polypropylene mesh. Ovine models were chosen due to their morphological resemblance to human reproductive organs. Animals were sacrificed after 90 days for macroscopic, pathomorphological, and immunohistochemical analysis. In the chitosan type B group, IL-6 and IL-10 levels decreased after 28 days, while chitosan type C and injection groups exhibited higher IL-6 than IL-10 levels. The polypropylene group displayed the highest IL-6 and lowest IL-10 levels. Histological examination of the polypropylene group revealed no degenerative changes or inflammation, whereas chitosan injection induced local inflammation. Other groups exhibited no degenerative changes. Ewes implanted with chitosan displayed reduced inflammation compared to polypropylene-implanted ewes. Chitosan implantation facilitated vaginal tissue healing, in contrast to polypropylene mesh, which led to extrusion. While chitosan holds promise as an alternative to polypropylene mesh, further research is imperative for comprehensive evaluation. This study suggests the potential of a chitosan biomaterial in pelvic organ prolapse treatment, warranting additional investigation.
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Affiliation(s)
- Klaudia Stangel-Wójcikiewicz
- Department of Gynecology and Oncology, Faculty of Medicine, Jagiellonian University Medical College, ul. Kopernika 23, 31-501 Kraków, Poland; (K.S.-W.); (K.S.)
| | - Maciej Murawski
- Department of Animal Nutrition, Biotechnology and Fisheries, Faculty of Animal Science, University of Agriculture in Kraków, ul. Mickiewicza 21, 31-120 Kraków, Poland;
| | - Tomasz Schwarz
- Department of Genetics, Animal Breeding and Ethology, Faculty of Animal Science, University of Agriculture in Kraków, ul. Mickiewicza 21, 31-120 Kraków, Poland; (T.S.); (D.W.)
| | - Krzysztof Skotniczny
- Department of Gynecology and Oncology, Faculty of Medicine, Jagiellonian University Medical College, ul. Kopernika 23, 31-501 Kraków, Poland; (K.S.-W.); (K.S.)
| | - Agnieszka Fuchs
- Department of Gynecological Endocrinology and Gynecology, Faculty of Medicine, Jagiellonian University Medical College, ul. Kopernika 23, 31-501 Kraków, Poland; (A.F.); (J.W.)
| | - Jan Wolski
- Department of Gynecological Endocrinology and Gynecology, Faculty of Medicine, Jagiellonian University Medical College, ul. Kopernika 23, 31-501 Kraków, Poland; (A.F.); (J.W.)
| | - Julia Radwan-Pragłowska
- Department of Biotechnology and Physical Chemistry, Faculty of Chemical Engineering and Technology, Cracow University of Technology, ul. Warszawska 24, 31-155 Kraków, Poland; (Ł.J.); (M.P.)
| | - Łukasz Janus
- Department of Biotechnology and Physical Chemistry, Faculty of Chemical Engineering and Technology, Cracow University of Technology, ul. Warszawska 24, 31-155 Kraków, Poland; (Ł.J.); (M.P.)
| | - Marek Piątkowski
- Department of Biotechnology and Physical Chemistry, Faculty of Chemical Engineering and Technology, Cracow University of Technology, ul. Warszawska 24, 31-155 Kraków, Poland; (Ł.J.); (M.P.)
| | - Marta Kot
- Department of Transplantation, Institute of Pediatrics, Faculty of Medicine, Jagiellonian University Medical College, ul. Wielicka 265, 30-663 Kraków, Poland;
| | - Andrzej Wróbel
- Second Department of Gynecology, Medical University of Lublin, ul. Jaczewskiego 8, 20-090 Lublin, Poland;
| | - Dorota Wojtysiak
- Department of Genetics, Animal Breeding and Ethology, Faculty of Animal Science, University of Agriculture in Kraków, ul. Mickiewicza 21, 31-120 Kraków, Poland; (T.S.); (D.W.)
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Bogdańska-Chomczyk E, Równiak M, Huang ACW, Kozłowska A. Parvalbumin interneuron deficiency in the prefrontal and motor cortices of spontaneously hypertensive rats: an attention-deficit hyperactivity disorder animal model insight. Front Psychiatry 2024; 15:1359237. [PMID: 38600979 PMCID: PMC11005678 DOI: 10.3389/fpsyt.2024.1359237] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 02/15/2024] [Indexed: 04/12/2024] Open
Abstract
Background Attention deficit hyperactivity disorder (ADHD) is characterized by impairments in developmental-behavioral inhibition, resulting in impulsivity and hyperactivity. Recent research has underscored cortical inhibition deficiencies in ADHD via the gamma-aminobutyric acid (GABA)ergic system, which is crucial for maintaining excitatory-inhibitory balance in the brain. This study explored postnatal changes in parvalbumin (PV) immunoreactivity, indicating GABAergic interneuron types, in the prefrontal (PFC) and motor (MC) cortices of spontaneously hypertensive rats (SHRs), an ADHD animal model. Methods Examining PV- positive (PV+) cells associated with dopamine D2 receptors (D2) and the impact of dopamine on GABA synthesis, we also investigated changes in the immunoreactivity of D2 and tyrosine hydroxylase (TH). Brain sections from 4- to 10-week-old SHRs and Wistar Kyoto rats (WKYs) were immunohistochemically analyzed, comparing PV+, D2+ cells, and TH+ fiber densities across age-matched SHRs and WKYs in specific PFC/MC regions. Results The results revealed significantly reduced PV+ cell density in SHRs: prelimbic (~20% less), anterior cingulate (~15% less), primary (~15% less), and secondary motor (~17% less) cortices. PV+ deficits coincided with the upregulation of D2 in prepubertal SHRs and the downregulation of TH predominantly in pubertal/postpubertal SHRs. Conclusion Reduced PV+ cells in various PFC regions could contribute to inattention/behavioral alterations in ADHD, while MC deficits could manifest as motor hyperactivity. D2 upregulation and TH deficits may impact GABA synthesis, exacerbating behavioral deficits in ADHD. These findings not only shed new light on ADHD pathophysiology but also pave the way for future research endeavors.
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Affiliation(s)
- Ewelina Bogdańska-Chomczyk
- Department of Human Physiology and Pathophysiology, School of Medicine, University of Warmia and Mazury, Olsztyn, Poland
| | - Maciej Równiak
- Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury, Olsztyn, Poland
| | | | - Anna Kozłowska
- Department of Human Physiology and Pathophysiology, School of Medicine, University of Warmia and Mazury, Olsztyn, Poland
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Sternberg F, Nomura M, Xie M, Duszka K. Editorial: Ketone bodies: friend or foe? Front Endocrinol (Lausanne) 2024; 15:1400206. [PMID: 38638134 PMCID: PMC11024786 DOI: 10.3389/fendo.2024.1400206] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Accepted: 03/13/2024] [Indexed: 04/20/2024] Open
Affiliation(s)
- Felix Sternberg
- Department of Nutritional Sciences, Faculty of Life Sciences, University of Vienna, Vienna, Austria
- Institute of Physiology, Pathophysiology and Biophysics, Department of Biomedical Sciences, University of Veterinary Medicine Vienna, Vienna, Austria
| | | | - Min Xie
- Department of Medicine, Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Kalina Duszka
- Department of Nutritional Sciences, Faculty of Life Sciences, University of Vienna, Vienna, Austria
- Center of Translational Medicine, Warsaw University of Life Science, Warsaw, Poland
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Kırmızı D, Sehirli AÖ, Sayiner S, Orhan K, Sebai A, Aksoy U. Effects of melatonin against experimentally induced apical periodontitis in rats. AUST ENDOD J 2024. [PMID: 38509787 DOI: 10.1111/aej.12841] [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: 09/24/2023] [Revised: 01/17/2024] [Accepted: 03/10/2024] [Indexed: 03/22/2024]
Abstract
Apical periodontitis is an inflammatory condition resulting from microbial invasion in the root canal system, causing periapical tissue destruction and bone resorption. This study investigated melatonin's effects, known for its antioxidant and anti-inflammatory properties, on experimentally induced apical periodontitis in rats. Three groups of rats were studied: control, apical periodontitis and apical periodontitis with melatonin treatment. Proinflammatory cytokines and enzyme levels in blood serum were measured, and micro-CT analysis assessed bone resorption. Results showed significantly elevated cytokines and enzyme levels in the apical periodontitis group compared to the control. However, in the melatonin-treated group, these levels were significantly reduced (p < 0.01-0.001). Micro-CT analysis indicated decreased periapical resorption cavity volume and surface area with melatonin treatment. This suggests that systemic melatonin administration can mitigate inflammation and reduce bone resorption in experimentally induced apical periodontitis in rats, potentially holding promise for human endodontic disease treatment pending further research.
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Affiliation(s)
- D Kırmızı
- Department of Endodontics, Faculty of Dentistry, Near East University, Nicosia, Mersin, Turkey
| | - A Ö Sehirli
- Department of Pharmacology, Faculty of Dentistry, Near East University, Nicosia, Mersin, Turkey
| | - S Sayiner
- Department of Biochemistry, Faculty of Veterinary Medicine, Near East University, Nicosia, Mersin, Turkey
| | - K Orhan
- Department of Maxillofacial Radiology, Faculty of Dentistry, Ankara University, Ankara, Turkey
- Medical Design Application and Research Center (MEDITAM), Ankara University, Ankara, Turkey
| | - A Sebai
- Department of Endodontics, Faculty of Dentistry, Near East University, Nicosia, Mersin, Turkey
| | - U Aksoy
- Department of Endodontics, Faculty of Dentistry, Near East University, Nicosia, Mersin, Turkey
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Wang T, Lu P, Wan Z, He Z, Cheng S, Zhou Y, Liao S, Wang M, Wang T, Shu C. Adaptation process of decellularized vascular grafts as hemodialysis access in vivo. Regen Biomater 2024; 11:rbae029. [PMID: 38638701 PMCID: PMC11026144 DOI: 10.1093/rb/rbae029] [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: 10/11/2023] [Revised: 03/03/2024] [Accepted: 03/04/2024] [Indexed: 04/20/2024] Open
Abstract
Arteriovenous grafts (AVGs) have emerged as the preferred option for constructing hemodialysis access in numerous patients. Clinical trials have demonstrated that decellularized vascular graft exhibits superior patency and excellent biocompatibility compared to polymer materials; however, it still faces challenges such as intimal hyperplasia and luminal dilation. The absence of suitable animal models hinders our ability to describe and explain the pathological phenomena above and in vivo adaptation process of decellularized vascular graft at the molecular level. In this study, we first collected clinical samples from patients who underwent the construction of dialysis access using allogeneic decellularized vascular graft, and evaluated their histological features and immune cell infiltration status 5 years post-transplantation. Prior to the surgery, we assessed the patency and intimal hyperplasia of the decellularized vascular graft using non-invasive ultrasound. Subsequently, in order to investigate the in vivo adaptation of decellularized vascular grafts in an animal model, we attempted to construct an AVG model using decellularized vascular grafts in a small animal model. We employed a physical-chemical-biological approach to decellularize the rat carotid artery, and histological evaluation demonstrated the successful removal of cellular and antigenic components while preserving extracellular matrix constituents such as elastic fibers and collagen fibers. Based on these results, we designed and constructed the first allogeneic decellularized rat carotid artery AVG model, which exhibited excellent patency and closely resembled clinical characteristics. Using this animal model, we provided a preliminary description of the histological features and partial immune cell infiltration in decellularized vascular grafts at various time points, including Day 7, Day 21, Day 42, and up to one-year post-implantation. These findings establish a foundation for further investigation into the in vivo adaptation process of decellularized vascular grafts in small animal model.
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Affiliation(s)
- Tun Wang
- Department of Vascular Surgery, The Second Xiangya Hospital, Central South University, Changsha 410011, China
- Institute of Vascular Diseases, Central South University, Changsha 410011, China
| | - Peng Lu
- Department of Vascular Surgery, The Second Xiangya Hospital, Central South University, Changsha 410011, China
- Institute of Vascular Diseases, Central South University, Changsha 410011, China
| | - Zicheng Wan
- Department of Vascular Surgery, The Second Xiangya Hospital, Central South University, Changsha 410011, China
- Institute of Vascular Diseases, Central South University, Changsha 410011, China
| | - Zhenyu He
- Department of Vascular Surgery, The Second Xiangya Hospital, Central South University, Changsha 410011, China
- Institute of Vascular Diseases, Central South University, Changsha 410011, China
| | - Siyuan Cheng
- Department of Vascular Surgery, The Second Xiangya Hospital, Central South University, Changsha 410011, China
- Institute of Vascular Diseases, Central South University, Changsha 410011, China
| | - Yang Zhou
- Department of Vascular Surgery, The Second Xiangya Hospital, Central South University, Changsha 410011, China
- Institute of Vascular Diseases, Central South University, Changsha 410011, China
| | - Sheng Liao
- Department of Vascular Surgery, The Second Xiangya Hospital, Central South University, Changsha 410011, China
- Institute of Vascular Diseases, Central South University, Changsha 410011, China
| | - Mo Wang
- Department of Vascular Surgery, The Second Xiangya Hospital, Central South University, Changsha 410011, China
- Institute of Vascular Diseases, Central South University, Changsha 410011, China
| | - Tianjian Wang
- Department of Vascular Surgery, The Second Xiangya Hospital, Central South University, Changsha 410011, China
- Institute of Vascular Diseases, Central South University, Changsha 410011, China
| | - Chang Shu
- Department of Vascular Surgery, The Second Xiangya Hospital, Central South University, Changsha 410011, China
- Institute of Vascular Diseases, Central South University, Changsha 410011, China
- Center of Vascular Surgery, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
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熊 一, 梁 小, 梁 晓, 李 伟, 钱 益, 谢 炜. [Saikosaponin a alleviates pentylenetetrazol-induced acute epileptic seizures in mouse models of depression by suppressing microglia activation-mediated inflammation]. Nan Fang Yi Ke Da Xue Xue Bao 2024; 44:515-522. [PMID: 38597443 PMCID: PMC11006703 DOI: 10.12122/j.issn.1673-4254.2024.03.13] [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] [Received: 11/29/2023] [Indexed: 04/11/2024]
Abstract
OBJECTIVE To explore the inhibitory effect of saikosonin a (SSa) on pentylenetetrazol-induced acute epilepsy seizures in a mouse model of depression and explore the mechanism mediating this effect. METHODS Male C57BL/6J mouse models of depression was established by oral administration of corticosterone via drinking water for 3 weeks, and acute epileptic seizures were induced by intraperitoneal injection of a single dose of pentylenetetrazole. The effect of intraperitoneal injection of SSa prior to the treatment on depressive symptoms and epileptic seizures were assessed using behavioral tests, epileptic seizure grading and hippocampal morphology observation. ELISA was used to detect blood corticosterone levels of the mice, and RTqPCR was performed to detect the pro- and anti-inflammatory factors. Microglia activation in the mice was observed using immunofluorescence staining. RESULTS The mouse model of corticosterone-induced depression showed body weight loss and obvious depressive behaviors with significantly increased serum corticosterone level (all P < 0.05). Compared with those with pentylenetetrazole-induced epilepsy alone, the epileptic mice with comorbid depression showed significantly shorter latency of epileptic seizures, increased number, grade and duration of of seizures, reduced Nissl bodies in hippocampal CA1 and CA3 neurons, increased number of Iba1-positive cells, and significantly enhanced hippocampal expressions of IL-1β, IL-10, TNF-α and IFN-γ. Pretreatment of the epileptic mice with SSa significantly prolonged the latency of epileptic seizures, reduced the number, duration, and severity of seizures, increased the number of Nissl bodies, decreased the number of Iba1-positive cells, and reduced the expression levels of IL-1β, IL-10, TNF-α, and IFN-γ in the hippocampus (P < 0.05). CONCLUSION Depressive state aggravates epileptic seizures, increases microglia activation, and elevates inflammation levels. SSA treatment can alleviate acute epileptic seizures in mouse models of depression possibly by suppressing microglia activation-mediated inflammation.
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Affiliation(s)
- 一凡 熊
- 南方医科大学中医药学院,广东 广州 510515School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China
| | - 小珊 梁
- 南方医科大学中医药学院,广东 广州 510515School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China
- 南方医科大学南方医院中医科,广东 广州 510515Department of Traditional Chinese Medicine, Nanfang Hospital of Southern Medical University, Guangzhou 510515, China
| | - 晓涛 梁
- 南方医科大学中医药学院,广东 广州 510515School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China
| | - 伟鹏 李
- 南方医科大学中医药学院,广东 广州 510515School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China
| | - 益啸 钱
- 广州市荔湾固生堂中医门诊部,广东 广州 510250Guangzhou Liwan Gushengtang Traditional Chinese Medicine Clinic, Guangzhou 510250, China
| | - 炜 谢
- 南方医科大学中医药学院,广东 广州 510515School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China
- 南方医科大学南方医院中医科,广东 广州 510515Department of Traditional Chinese Medicine, Nanfang Hospital of Southern Medical University, Guangzhou 510515, China
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Juttla PK, Chege BM, Mwangi PW, Bukachi F. Dapagliflozin Pretreatment Prevents Cardiac Electrophysiological Changes in a Diet and Streptozotocin Induction of Type 2 Diabetes in Rats: A Potential New First-Line? J Exp Pharmacol 2024; 16:123-133. [PMID: 38525051 PMCID: PMC10961018 DOI: 10.2147/jep.s443169] [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: 10/15/2023] [Accepted: 02/22/2024] [Indexed: 03/26/2024] Open
Abstract
Purpose Dapagliflozin exerts cardioprotective effects in Type 2 Diabetes Mellitus (T2DM). However, whether these effects prevent electrocardiographic changes associated with T2DM altogether remain unknown. Our aim was to investigate the prophylactic effect of dapagliflozin pretreatment on the rat ECG using a high-fat, high-fructose (HFHf) diet and a low dose streptozotocin (STZ) model of T2DM. Methods Twenty-five (25) rats were randomized into five (5) groups: normal control receiving a normal diet while the other groups received an 8-week HFHf and 40mg/kg STZ on day 42, and either: saline for the diabetic control (1 mg/kg/d), low dose (1.0 mg/kg/d) and high dose dapagliflozin (1.6 mg/kg/d), or metformin (250 mg/kg/d). Oral glucose tolerance (OGT), electrocardiograms (ECGs), paracardial adipose mass, and left ventricular fibrosis were determined. Data were analyzed using GraphPad version 9.0.0.121, with the level of significance at p < 0.05. Results Compared to the diabetic control group, a high dose of dapagliflozin preserved the OGT (p = 0.0001), QRS-duration (p = 0.0263), QT-interval (p = 0.0399), and QTc intervals (p = 0.0463). Furthermore, the high dose dapagliflozin group had the lowest paracardial adipose mass (p = 0.0104) and fibrotic area (p = 0.0001). In contrast, while metformin showed favorable effects on OGT (p = 0.0025), paracardial adiposity (p = 0.0153) and ventricular fibrosis (p = 0.0291), it did not demonstrate significant antiarrhythmic effects. Conclusion Pretreatment with higher doses of Dapagliflozin exhibits prophylactic cardioprotective characteristics against diabetic cardiomyopathy that include antifibrotic and antiarrhythmic qualities. This suggests that higher doses of dapagliflozin could be a more effective initial therapeutic option in T2DM.
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Affiliation(s)
| | | | | | - Frederick Bukachi
- Department of Medical Physiology, University of Nairobi, Nairobi, Kenya
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Puris E, Saveleva L, Auriola S, Gynther M, Kanninen KM, Fricker G. Sex-specific changes in protein expression of membrane transporters in the brain cortex of 5xFAD mouse model of Alzheimer's disease. Front Pharmacol 2024; 15:1365051. [PMID: 38572427 PMCID: PMC10989684 DOI: 10.3389/fphar.2024.1365051] [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: 01/03/2024] [Accepted: 02/27/2024] [Indexed: 04/05/2024] Open
Abstract
Membrane transporters playing an important role in the passage of drugs, metabolites and nutrients across the membranes of the brain cells have been shown to be involved in pathogenesis of Alzheimer's disease (AD). However, little is known about sex-specific changes in transporter protein expression at the brain in AD. Here, we investigated sex-specific alterations in protein expression of three ATP-binding cassette (ABC) and five solute carriers (SLC) transporters in the prefrontal cortex of a commonly used model of familial AD (FAD), 5xFAD mice. Sensitive liquid chromatography tandem mass spectrometry-based quantitative targeted absolute proteomic analysis was applied for absolute quantification of transporter protein expression. We compared the changes in transporter protein expressions in 7-month-old male and female 5xFAD mice versus sex-matched wild-type mice. The study revealed a significant sex-specific increase in protein expression of ABCC1 (p = 0.007) only in male 5xFAD mice as compared to sex-matched wild-type animals. In addition, the increased protein expression of glucose transporter 1 (p = 0.01), 4F2 cell-surface antigen heavy chain (p = 0.01) and long-chain fatty acid transport protein 1 (p = 0.02) were found only in female 5xFAD mice as compared to sex-matched wild-type animals. Finally, protein expression of alanine/serine/cysteine/threonine transporter 1 was upregulated in both male (p = 0.02) and female (p = 0.002) 5xFAD mice. The study provides important information about sex-specific changes in brain cortical transporter expression in 5xFAD mice, which will facilitate drug development of therapeutic strategies for AD targeting these transporters and drug delivery research.
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Affiliation(s)
- Elena Puris
- Institute of Pharmacy and Molecular Biotechnology, Ruprecht-Karls-University, Heidelberg, Germany
| | - Liudmila Saveleva
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Seppo Auriola
- School of Pharmacy, University of Eastern Finland, Kuopio, Finland
| | - Mikko Gynther
- School of Pharmacy, University of Eastern Finland, Kuopio, Finland
| | - Katja M. Kanninen
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Gert Fricker
- Institute of Pharmacy and Molecular Biotechnology, Ruprecht-Karls-University, Heidelberg, Germany
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Han X, Knauss EA, Fuente MDL, Li W, Conlon RA, LePage DF, Jiang W, Renna SA, McKenzie SE, Nieman MT. A mouse model of the protease-activated receptor 4 Pro310Leu variant has reduced platelet reactivity. J Thromb Haemost 2024:S1538-7836(24)00161-2. [PMID: 38508397 DOI: 10.1016/j.jtha.2024.03.004] [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: 12/01/2023] [Revised: 02/26/2024] [Accepted: 03/11/2024] [Indexed: 03/22/2024]
Abstract
BACKGROUND Protease-activated receptor 4 (PAR4) mediates thrombin signaling on platelets and other cells. Our recent structural studies demonstrated that a single nucleotide polymorphism in extracellular loop 3 and PAR4-P310L (rs2227376) leads to a hyporeactive receptor. OBJECTIVES The goal of this study was to determine how the hyporeactive PAR4 variant in extracellular loop 3 impacts platelet function in vivo using a novel knock-in mouse model (PAR4-322L). METHODS A point mutation was introduced into the PAR4 gene F2rl3 via CRISPR/Cas9 to create PAR4-P322L, the mouse homolog to human PAR4-P310L. Platelet response to PAR4 activation peptide (AYPGKF), thrombin, ADP, and convulxin was monitored by αIIbβ3 integrin activation and P-selectin translocation using flow cytometry or platelet aggregation. In vivo responses were determined by the tail bleeding assay and the ferric chloride-induced carotid artery injury model. RESULTS PAR4-P/L and PAR4-L/L platelets had a reduced response to AYPGKF and thrombin measured by P-selectin translocation or αIIbβ3 activation. The response to ADP and convulxin was unchanged among genotypes. In addition, both PAR4-P/L and PAR4-L/L platelets showed a reduced response to thrombin in aggregation studies. There was an increase in the tail bleeding time for PAR4-L/L mice. The PAR4-P/L and PAR4-L/L mice both showed an extended time to arterial thrombosis. CONCLUSION PAR4-322L significantly reduced platelet responsiveness to AYPGKF and thrombin, which is in agreement with our previous structural and cell signaling studies. In addition, PAR4-322L had prolonged arterial thrombosis time. Our mouse model provides a foundation to further evaluate the role of PAR4 in other pathophysiological contexts.
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Affiliation(s)
- Xu Han
- Case Western Reserve University School of Medicine, Department of Pharmacology, Cleveland, Ohio, USA
| | - Elizabeth A Knauss
- Case Western Reserve University School of Medicine, Department of Pharmacology, Cleveland, Ohio, USA
| | - Maria de la Fuente
- Case Western Reserve University School of Medicine, Department of Pharmacology, Cleveland, Ohio, USA
| | - Wei Li
- Department of Biomedical Sciences, Joan C. Edwards School of Medicine at Marshall University, Huntington, West Virginia, USA
| | - Ronald A Conlon
- Case Transgenic and Targeting Facility, Case Western Reserve University, Cleveland, Ohio, USA
| | - David F LePage
- Case Transgenic and Targeting Facility, Case Western Reserve University, Cleveland, Ohio, USA
| | - Weihong Jiang
- Case Transgenic and Targeting Facility, Case Western Reserve University, Cleveland, Ohio, USA
| | - Stephanie A Renna
- Department of Medicine, The Cardeza Foundation for Hematologic Research, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Steven E McKenzie
- Department of Medicine, The Cardeza Foundation for Hematologic Research, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Marvin T Nieman
- Case Western Reserve University School of Medicine, Department of Pharmacology, Cleveland, Ohio, USA.
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Gao M, He Y, Zhu X, Peng W, Zhou Y, Deng Y, Liao G, Ni W, Li Y, Gao J, Bu H, Yang J, Yang G, Yang Y, Bao J. One-step in vivo gene knock-out in porcine embryos using recombinant adeno-associated viruses. Front Cell Dev Biol 2024; 12:1376936. [PMID: 38559814 PMCID: PMC10978582 DOI: 10.3389/fcell.2024.1376936] [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: 01/26/2024] [Accepted: 02/29/2024] [Indexed: 04/04/2024] Open
Abstract
Introduction: Gene-edited pigs have become prominent models for studying human disease mechanisms, gene therapy, and xenotransplantation. CRISPR (clustered regularly interspaced short palindromic repeats)/CRISPR-associated 9 (CRISPR/Cas9) technology is a widely employed tool for generating gene-edited pigs. Nevertheless, delivering CRISPR/Cas9 to pre-implantation embryos has traditionally posed challenges due to its reliance on intricate micromanipulation equipment and specialized techniques, resulting in high costs and time-consuming procedures. This study aims to introduce a novel one-step approach for generating genetically modified pigs by transducing CRISPR/Cas9 components into pre-implantation porcine embryos through oviductal injection of recombinant adeno-associated viruses (rAAV). Methods: We first used rAAV-1, rAAV-6, rAAV-8, rAAV-9 expressing EGFP to screen for rAAV serotypes that efficiently target porcine embryos, and then, to achieve efficient expression of CRISPR/Cas9 in vivo for a short period, we packaged sgRNAs targeting the GHR genes to self-complementary adeno-associated virus (scAAV), and Cas9 proteins to single-stranded adeno-associated virus (ssAAV). The efficiency of porcine embryos -based editing was then validated in vitro. The feasibility of this one-step method to produce gene-edited pigs using rAAV-CRISPR/Cas9 oviductal injection into sows within 24 h of conception was then validated. Results: Our research firstly establishes the efficient delivery of CRISPR/Cas9 to pig zygotes, both in vivo and in vitro, using rAAV6. Successful gene editing in pigs was achieved through oviductal injection of rAAV-CRISPR/Cas9. Conclusion: This method circumvents the intricate procedures involved in in vitro embryo manipulation and embryo transfers, providing a straightforward and cost-effective approach for the production of gene-edited pigs.
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Affiliation(s)
- Mengyu Gao
- Department of Pathology, Institute of Clinical Pathology, Key Laboratory of Transplant Engineering and Immunology, West China Hospital, Sichuan University, Chengdu, China
| | - YuTing He
- Department of Pathology, Institute of Clinical Pathology, Key Laboratory of Transplant Engineering and Immunology, West China Hospital, Sichuan University, Chengdu, China
| | - XingLong Zhu
- Department of Pathology, Institute of Clinical Pathology, Key Laboratory of Transplant Engineering and Immunology, West China Hospital, Sichuan University, Chengdu, China
| | - WanLiu Peng
- Department of Pathology, Institute of Clinical Pathology, Key Laboratory of Transplant Engineering and Immunology, West China Hospital, Sichuan University, Chengdu, China
| | - YanYan Zhou
- Department of Pathology, Institute of Clinical Pathology, Key Laboratory of Transplant Engineering and Immunology, West China Hospital, Sichuan University, Chengdu, China
| | - Yang Deng
- Department of Pathology, Institute of Clinical Pathology, Key Laboratory of Transplant Engineering and Immunology, West China Hospital, Sichuan University, Chengdu, China
| | - Guangneng Liao
- Experimental Animal Center, West China Hospital, Sichuan University, Chengdu, China
| | - Wei Ni
- Security Department, West China Hospital, Sichuan University, Chengdu, China
| | - Yi Li
- Institute of Respiratory Health, West China Hospital, Sichuan University, Chengdu, China
| | - Jun Gao
- Department of Toxicological Inspection, Sichuan Center for Disease Prevention and Control, Chengdu, China
| | - Hong Bu
- Department of Pathology, Institute of Clinical Pathology, Key Laboratory of Transplant Engineering and Immunology, West China Hospital, Sichuan University, Chengdu, China
| | - Jiayin Yang
- Laboratory of Liver Transplantation, Frontiers Science Center for Disease-related Molecular, Network, West China Hospital, Sichuan University, Chengdu, China
| | - Guang Yang
- Experimental Animal Center, West China Hospital, Sichuan University, Chengdu, China
| | - Yang Yang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Ji Bao
- Department of Pathology, Institute of Clinical Pathology, Key Laboratory of Transplant Engineering and Immunology, West China Hospital, Sichuan University, Chengdu, China
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Santos AG, Kühl CE, Higashijima AN, Kanazawa LKS, de Souza STF, Andreatini R. Antimanic-like effect of dipyridamole in the methylphenidate-induced hyperlocomotion. Fundam Clin Pharmacol 2024. [PMID: 38472106 DOI: 10.1111/fcp.13001] [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: 07/16/2023] [Revised: 02/20/2024] [Accepted: 02/21/2024] [Indexed: 03/14/2024]
Abstract
BACKGROUND Adenosinergic system has been implicated in the pathophysiology of bipolar disorder and drugs that affect adenosine neurotransmission have shown some efficacy as add-on therapy in manic patients. OBJECTIVE Thus, the aim of the present study was to screen adenosinergic drugs for antimanic-like effect in methylphenidate (MPH)-induced hyperlocomotion in mice. METHODS Male and female Swiss mice received a single allopurinol (50 and 200 mg/kg, ip), dipyridamole (20 mg/kg, ip), or inosine (50 mg/kg, ip) administration before an acute MPH challenge (5 mg/kg, sc). In experiments with repeated treatment, male mice received a daily administration of allopurinol (25 and 50 mg/kg, ip), dipyridamole (20 mg/kg, ip), or inosine (50 mg/kg, ip) for 14 days. Finally, pretreatment with aminophylline (2 mg/kg, sc), an unspecific adenosine receptor antagonist, was used to evaluate a putative adenosinergic mediation. Locomotor activity was measured in the automated activity chamber for 20 min. RESULTS Acute and repeated dipyridamole reduced the increase in locomotor activity induced by MPH, while allopurinol and inosine had no effect. Aminophylline blocked the effect of dipyridamole in MPH-induced hyperlocomotion. CONCLUSION The present results suggest that dipyridamole may have an antimanic-like effect through adenosine receptors and reinforce the proposal that the adenosine system may be an interesting target for new antimanic drugs.
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Affiliation(s)
- Anderson Gustavo Santos
- Laboratory of Physiology and Pharmacology of the Central Nervous System, Department of Pharmacology, Federal University of Paraná, Centro Politécnico, Curitiba, PR, Brazil
| | - Carlos Eduardo Kühl
- Laboratory of Physiology and Pharmacology of the Central Nervous System, Department of Pharmacology, Federal University of Paraná, Centro Politécnico, Curitiba, PR, Brazil
| | - Arisa Namie Higashijima
- Laboratory of Physiology and Pharmacology of the Central Nervous System, Department of Pharmacology, Federal University of Paraná, Centro Politécnico, Curitiba, PR, Brazil
| | - Luiz Kae Sales Kanazawa
- Laboratory of Physiology and Pharmacology of the Central Nervous System, Department of Pharmacology, Federal University of Paraná, Centro Politécnico, Curitiba, PR, Brazil
| | - Suzen Tortato Furtado de Souza
- Laboratory of Physiology and Pharmacology of the Central Nervous System, Department of Pharmacology, Federal University of Paraná, Centro Politécnico, Curitiba, PR, Brazil
| | - Roberto Andreatini
- Laboratory of Physiology and Pharmacology of the Central Nervous System, Department of Pharmacology, Federal University of Paraná, Centro Politécnico, Curitiba, PR, Brazil
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Steiner MA, Botticelli L, Bergamini G, Micioni Di Bonaventura E, Gatfield J, Williams JT, Treiber A, Vaillant C, Cifani C, Micioni Di Bonaventura MV. Evaluating the efficacy of the selective orexin 1 receptor antagonist nivasorexant in an animal model of binge-eating disorder. Int J Eat Disord 2024. [PMID: 38456603 DOI: 10.1002/eat.24181] [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: 11/01/2023] [Revised: 02/15/2024] [Accepted: 02/19/2024] [Indexed: 03/09/2024]
Abstract
OBJECTIVE Test the efficacy of the selective orexin 1 receptor (OX1R) antagonist (SO1RA) nivasorexant in an animal model of binge-eating disorder (BED) and study its dose-response relationship considering free brain concentrations and calculated OX1R occupancy. Compare nivasorexant's profile to that of other, structurally diverse SO1RAs. Gain understanding of potential changes in orexin-A (OXA) neuropeptide and deltaFosB (ΔFosB) protein expression possibly underlying the development of the binge-eating phenotype in the rat model used. METHOD Binge-like eating of highly palatable food (HPF) in rats was induced through priming by intermittent, repeated periods of dieting and access to HPF, followed by an additional challenge with acute stress. Effects of nivasorexant were compared to the SO1RAs ACT-335827 and IDOR-1104-2408. OXA expression in neurons and neuronal fibers as well as ΔFosB and OXA-ΔFosB co-expression was studied in relevant brain regions using immuno- or immunofluorescent histochemistry. RESULTS All SO1RAs dose-dependently reduced binge-like eating with effect sizes comparable to the positive control topiramate, at unbound drug concentrations selectively blocking brain OX1Rs. Nivasorexant's efficacy was maintained upon chronic dosing and under conditions involving more frequent stress exposure. Priming for binge-like eating or nivasorexant treatment resulted in only minor changes in OXA or ΔFosB expression in few brain areas. DISCUSSION Selective OX1R blockade reduced binge-like eating in rats. Neither ΔFosB nor OXA expression proved to be a useful classifier for their binge-eating phenotype. The current results formed the basis for a clinical phase II trial in BED, in which nivasorexant was unfortunately not efficacious compared with placebo. PUBLIC SIGNIFICANCE Nivasorexant is a new investigational drug for the treatment of binge-eating disorder (BED). It underwent clinical testing in a phase II proof of concept trial in humans but was not efficacious compared with placebo. The current manuscript investigated the drug's efficacy in reducing binge-like eating behavior of a highly palatable sweet and fat diet in a rat model of BED, which initially laid the foundation for the clinical trial.
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Affiliation(s)
| | - Luca Botticelli
- Pharmacology Unit, School of Pharmacy, University of Camerino, Camerino, Italy
| | - Giorgio Bergamini
- CNS Pharmacology, Idorsia Pharmaceuticals Ltd, Allschwil, Switzerland
| | | | - John Gatfield
- CNS Pharmacology, Idorsia Pharmaceuticals Ltd, Allschwil, Switzerland
| | - Jodi T Williams
- CNS Pharmacology, Idorsia Pharmaceuticals Ltd, Allschwil, Switzerland
| | - Alexander Treiber
- CNS Pharmacology, Idorsia Pharmaceuticals Ltd, Allschwil, Switzerland
| | | | - Carlo Cifani
- Pharmacology Unit, School of Pharmacy, University of Camerino, Camerino, Italy
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Guo X, Zhang Z, Chen Q, Wang L, Xu X, Wei Z, Zhang Y, Chen K, Wang Z, Lu X, Liang Q. Whole Genome Sequencing Highlights the Pathogenic Profile in Nocardia Keratitis. Invest Ophthalmol Vis Sci 2024; 65:26. [PMID: 38502137 PMCID: PMC10959193 DOI: 10.1167/iovs.65.3.26] [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: 08/26/2023] [Accepted: 02/26/2024] [Indexed: 03/20/2024] Open
Abstract
Purpose Nocardia keratitis is a serious and sight-threatening condition. This study aims to reveal the virulence and antimicrobial resistance gene profile of Nocardia strains using whole genome sequencing. Methods Whole-genome sequencing was performed on 23 cornea-derived Nocardia strains. Together with genomic data from the respiratory tract and the environment, 141 genomes were then utilized for phylogenetic and pan-genome analyses, followed by virulence and antibiotic resistance analysis. The correlations between virulence genes and pathogenicity were experimentally validated, including the characteristics of Nocardia colonies and clinical and histopathological evaluations of Nocardia keratitis mice models. Results Whole-genome sequencing of 141 Nocardia strains revealed a mean of 220 virulence genes contributed to bacterial pathogenesis. The mce gene family analysis led to the categorization of strains from the cornea into groups A, B, and C. The colonies of group C had the largest diameter, height, and fastest growth rate. The size of corneal ulcers and the clinical scores showed a significant increase in mouse models induced by group C. The relative expression levels of pro-inflammatory cytokines (CD4, IFN-γ, IL-6Rα, and TNF-α) in the lesion area exhibited an increasing trend from group A to group C. Antibiotic resistance genes (ARGs) spanned nine distinct drug classes, four resistance mechanisms, and seven primary antimicrobial resistance gene families. Conclusions Whole genome sequencing highlights the pathogenic role of mce gene family in Nocardia keratitis. Its distribution pattern may contribute to the distinct characteristics of the growth of Nocardia colonies and the clinical severity of the mice models.
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Affiliation(s)
- Xiaoyan Guo
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Zijun Zhang
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Qiankun Chen
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Leying Wang
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Xizhan Xu
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Zhenyu Wei
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Yang Zhang
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Kexin Chen
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Zhiqun Wang
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Xinxin Lu
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Qingfeng Liang
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China
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Huang Y, Lei L, Zhu J, Zheng J, Li Z, Wang H, Wang J, Zheng Z. Pain behavior and phenotype in a modified anterior lumbar disc puncture mouse model. JOR Spine 2024; 7:e1284. [PMID: 38249720 PMCID: PMC10797215 DOI: 10.1002/jsp2.1284] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 09/03/2023] [Accepted: 09/06/2023] [Indexed: 01/23/2024] Open
Abstract
Background An experimental study was performed to improve the anterior approach model of intervertebral disc degeneration (IVDD). Objective The aims of this study were to investigate the anterior approach model of IVDD for the cause of death, phenotypes, and underlying mechanisms of low back pain in mice. Method In this study, we conducted an anterior puncture procedure on a cohort of 300 C57BL/6J mice that were 8 weeks old. Our investigation focused on exploring the causes of death in the study population (n = 300) and assessing the time-course changes in various parameters, including radiographical, histological, immunofluorescence, and immunohistochemistry analyses (n = 10). Additionally, we conducted behavioral assessments on a subset of the animals (n = 30). Results Transverse vertebral artery rupture is a major factor in surgical death. Radiographical analyses showed that the hydration of the nucleus pulposus began to decrease at 2 weeks after puncture and obviously disappeared over 4 weeks. 3D-CT showed that disc height was significantly decreased at 4 weeks. Osteophyte at the anterior vertebral rims was observed at 2 weeks after the puncture. As the time course increased, histological analyses showed progressive disruption of the destruction of the extracellular matrix and increased secretion of inflammatory cytokines and apoptosis. Behavioral signs of low back pain were increased between the puncture and sham groups at 4 weeks. Conclusion The improvement of anterior intervertebral disc approach model in mice will be useful to investigate underlying mechanisms and potential therapeutic strategies for behavior and phenotypes. Furthermore, the application of vibrational pre-treatment can be used to increase the sensitivity of axial back pain in the model, thereby providing researchers with a reliable method for measuring this critical phenotype.
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Affiliation(s)
- Yuming Huang
- Department of Spine SurgeryThe First Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina
- Sun Yan Sen UniversityPain Research CenterGuangzhouChina
- Guangdong Province Key Laboratory of Orthopaedics and TraumatologyGuangzhouChina
| | - Linchuan Lei
- Department of Spine SurgeryThe First Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina
- Sun Yan Sen UniversityPain Research CenterGuangzhouChina
- Laboratory of General Surgery, The First Affiliated HospitalSun Yat‐sen UniversityGuangzhouChina
| | - Jian Zhu
- Department of Spine SurgeryThe First Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina
- Sun Yan Sen UniversityPain Research CenterGuangzhouChina
- Guangdong Province Key Laboratory of Orthopaedics and TraumatologyGuangzhouChina
| | - Jinjian Zheng
- Department of Spine SurgeryThe First Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina
- Sun Yan Sen UniversityPain Research CenterGuangzhouChina
- Guangdong Province Key Laboratory of Orthopaedics and TraumatologyGuangzhouChina
| | - Zemin Li
- Department of Spine SurgeryThe First Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina
- Sun Yan Sen UniversityPain Research CenterGuangzhouChina
- Guangdong Province Key Laboratory of Orthopaedics and TraumatologyGuangzhouChina
| | - Hua Wang
- Department of Spine SurgeryThe First Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina
- Sun Yan Sen UniversityPain Research CenterGuangzhouChina
- Guangdong Province Key Laboratory of Orthopaedics and TraumatologyGuangzhouChina
| | - Jianru Wang
- Department of Spine SurgeryThe First Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina
- Sun Yan Sen UniversityPain Research CenterGuangzhouChina
| | - Zhaomin Zheng
- Department of Spine SurgeryThe First Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina
- Sun Yan Sen UniversityPain Research CenterGuangzhouChina
- Guangdong Province Key Laboratory of Orthopaedics and TraumatologyGuangzhouChina
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Almeida LKY, Battaglino RA, Araujo LDC, Lucisano MP, Massoni VV, da Silva LAB, Nelson-Filho P, Morse LR, da Silva RAB. TLR2 agonist prevents the progression of periapical lesions in mice by reducing osteoclast activity and regulating the frequency of Tregs. Int Endod J 2024; 57:328-343. [PMID: 38236318 DOI: 10.1111/iej.14015] [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: 09/08/2023] [Revised: 12/08/2023] [Accepted: 12/18/2023] [Indexed: 01/19/2024]
Abstract
AIM To evaluate the role of regulatory T lymphocytes (Tregs) in the presence or absence of the synthetic ligand Pam3Cys during the progression of periapical lesion in wild-type (WT) and toll-like receptor 2 knockout (TLR2KO) mice. METHODOLOGY A total of 130 C57BL/6 male WT and TLR2KO mice were allocated into control (n = 5) and experimental (periapical lesion induction) (n = 10) groups. In specific groups (WT+Pam3cys and TLR2KO+Pam3cys), the synthetic ligand Pam3cys was administered intraperitoneally every 7 days, according to the experimental period (14, 21 and 42 days). At the end of those periods, the animals were euthanized, and the mandible and the spleen were submitted to histotechnical processing. Mandible histological sections were analysed by haematoxylin and eosin, TRAP histoenzymology and immunohistochemistry (FOXP3, RANK, RANKL and OPG). Spleen sections were analysed by immunohistochemistry (FOXP3). RESULTS The inflammatory infiltrate and bone resorption were more intense in the TLR2KO group compared to the WT group. The animals that received the Pam3cys had smaller periapical lesions when compared to the animals that did not receive the ligand (p < .05). TLR2KO animals showed a significant increase in the number of osteoclasts when compared to TLR2KO+Pam3cys group (p < .05). At 21 days, the WT+Pam3cys group had a lower number of osteoclasts when compared to the WT animals (p = .02). FOXP3 expression was more intense in the WT+Pam3cys groups when compared to the WT animals in the 42 days (p = .03). In the spleen analysis, the WT+Pam3cys group also had a higher expression of FOXP3 when compared to the WT animals at 14 and 42 days (p = .02). Concerning RANKL, there was a reduction in staining in the KOTLR2+Pam3cys groups at 21 and 42 days (p = .03) and a higher binding ratio between RANK/RANKL in animals that did not receive the ligand. CONCLUSION Administration of the Pam3cys increased the proliferation of Tregs, showed by FOXP3 expression and prevented the progression of the periapical lesion in WT mice. On the other hand, in the TLR2KO animals, Treg expression was lower with larger areas of periapical lesions. Finally, systemic administration of the Pam3cys in KO animals was able to limit the deleterious effects of the absence of the TLR2 receptor.
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Affiliation(s)
- Lana Kei Yamamoto Almeida
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Ricardo Anibal Battaglino
- Department of Rehabilitation Medicine, School of Medicine, University of Minnesota, Minneapolis, Minnesota, USA
| | - Lisa Danielly Curcino Araujo
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Marília Pacífico Lucisano
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Vivian Vicentin Massoni
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Léa Assed Bezerra da Silva
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Paulo Nelson-Filho
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Leslie Rae Morse
- Department of Rehabilitation Medicine, School of Medicine, University of Minnesota, Minneapolis, Minnesota, USA
| | - Raquel Assed Bezerra da Silva
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
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Kreber L, Liu L, Dharmadhikari S, Tan ZH, Chan C, Huddle J, Hussein Z, Shontz K, Breuer CK, Johnson J, Chiang T. Assessing the Biocompatibility and Regeneration of Electrospun-Nanofiber Composite Tracheal Grafts. Laryngoscope 2024; 134:1155-1162. [PMID: 37578209 PMCID: PMC10864676 DOI: 10.1002/lary.30955] [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: 02/07/2023] [Revised: 07/25/2023] [Accepted: 07/26/2023] [Indexed: 08/15/2023]
Abstract
OBJECTIVE Composite tracheal grafts (CTG) combining decellularized scaffolds with external biomaterial support have been shown to support host-derived neotissue formation. In this study, we examine the biocompatibility, graft epithelialization, vascularization, and patency of three prototype CTG using a mouse microsurgical model. STUDY DESIGN Tracheal replacement, regenerative medicine, biocompatible airway splints, animal model. METHOD CTG electrospun splints made by combining partially decellularized tracheal grafts (PDTG) with polyglycolic acid (PGA), poly(lactide-co-ε-caprolactone) (PLCL), or PLCL/PGA were orthotopically implanted in mice (N = 10/group). Tracheas were explanted two weeks post-implantation. Micro-Computed Tomography was conducted to assess for graft patency, and histological analysis was used to assess for epithelialization and neovascularization. RESULT Most animals (greater than 80%) survived until the planned endpoint and did not exhibit respiratory symptoms. MicroCT confirmed the preservation of graft patency. Grossly, the PDTG component of CTG remained intact. Examining the electrospun component of CTG, PGA degraded significantly, while PLCL+PDTG and PLCL/PGA + PDTG maintained their structure. Microvasculature was observed across the surface of CTG and infiltrating the pores. There were no signs of excessive cellular infiltration or encapsulation. Graft microvasculature and epithelium appear similar in all groups, suggesting that CTG did not hinder endothelialization and epithelialization. CONCLUSION We found that all electrospun nanofiber CTGs are biocompatible and did not affect graft patency, endothelialization and epithelialization. Future directions will explore methods to accelerate graft regeneration of CTG. LEVEL OF EVIDENCE N/A Laryngoscope, 134:1155-1162, 2024.
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Affiliation(s)
- Lily Kreber
- College of Medicine, the Ohio State University, Columbus, OH, USA
| | - Lumei Liu
- Center of Regenerative Medicine, Abigail Wexner Research Institute, Nationwide Children’s Hospital, Columbus, OH, USA
| | - Sayali Dharmadhikari
- Center of Regenerative Medicine, Abigail Wexner Research Institute, Nationwide Children’s Hospital, Columbus, OH, USA
- College of Medicine, the Ohio State University, Columbus, OH, USA
| | - Zheng Hong Tan
- College of Medicine, the Ohio State University, Columbus, OH, USA
- Department of Pediatric Otolaryngology, Nationwide Children’s Hospital, Columbus, OH, USA
| | - Coreena Chan
- College of Medicine, the Ohio State University, Columbus, OH, USA
| | | | - Zakarie Hussein
- College of Medicine, the Ohio State University, Columbus, OH, USA
| | - Kimberly Shontz
- Center of Regenerative Medicine, Abigail Wexner Research Institute, Nationwide Children’s Hospital, Columbus, OH, USA
| | - Christopher K. Breuer
- Center of Regenerative Medicine, Abigail Wexner Research Institute, Nationwide Children’s Hospital, Columbus, OH, USA
- Department of Pediatric Surgery, Nationwide Children’s Hospital, Columbus, OH, USA
| | | | - Tendy Chiang
- Center of Regenerative Medicine, Abigail Wexner Research Institute, Nationwide Children’s Hospital, Columbus, OH, USA
- College of Medicine, the Ohio State University, Columbus, OH, USA
- Department of Pediatric Otolaryngology, Nationwide Children’s Hospital, Columbus, OH, USA
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Minten L, Langenaeken T, McCutcheon K, Bennett J, Van Hecke M, Algoet M, Bézy S, Duchenne J, Puvrez A, Wouters L, Voigt JU, Adriaenssens T, Desmet W, Sinnaeve P, Verbrugghe P, Oosterlinck W, Claus P, Meuris B, Dubois C. An interventional sheep model of severe aortic valve stenosis hemodynamics for the evaluation of alterations in coronary physiology and microvascular function. J Appl Physiol (1985) 2024; 136:606-617. [PMID: 38328825 DOI: 10.1152/japplphysiol.00737.2023] [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: 10/16/2023] [Accepted: 02/02/2024] [Indexed: 02/09/2024] Open
Abstract
We aimed to develop a large animal model of subcoronary aortic stenosis (AS) to study intracoronary and microcirculatory hemodynamics. A total of three surgical techniques inducing AS were evaluated in 12 sheep. Suturing the leaflets together around a dilator (n = 2) did not result in severe AS. Suturing of a pericardial patch with a variable opening just below the aortic valve (n = 5) created an AS which was poorly tolerated if the aortic valve area (AVA) was too small (0.38-1.02 cm2), but was feasible with an AVA of 1.2 cm2. However, standardization of aortic regurgitation (AR) with this technique is difficult. Therefore, we opted for implantation of an undersized AV-bioprosthesis with narrowing sutures on the leaflets (n = 5). Overall, five sheep survived the immediate postoperative period of which three had severe AS (one patch and two bioprostheses). The surviving sheep with severe AS developed left ventricular hypertrophy and signs of increased filling-pressures. Intracoronary assessment of physiological indices in these AS sheep pointed toward the development of functional microvascular dysfunction, with a significant increase in coronary resting flow and hyperemic coronary resistance, resulting in a significantly higher index of microvascular resistance (IMR) and lower myocardial resistance reserve (MRR). Microscopic analysis showed myocardial hypertrophy and signs of fibrosis without evidence of capillary rarefaction. In a large animal model of AS, microvascular changes are characterized by increased resting coronary flow and hyperemic coronary resistance resulting in increased IMR and decreased MRR. These physiological changes can influence the interpretation of regularly used coronary indices.NEW & NOTEWORTHY In an animal model of aortic valve stenosis (AS), coronary physiological changes are characterized by increased resting coronary flow and hyperemic coronary resistance. These changes can impact coronary indices frequently used to assess concomitant coronary artery disease (CAD). At this point, the best way to assess and treat CAD in AS remains unclear. Our data suggest that fractional flow reserve may underestimate CAD, and nonhyperemic pressure ratios may overestimate CAD severity before aortic valve replacement.
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Affiliation(s)
- Lennert Minten
- Department of Cardiovascular Sciences, KU Leuven, Leuven, Belgium
- Department of Cardiovascular Medicine, University Hospitals Leuven (UZ Leuven), Leuven, Belgium
| | - Tom Langenaeken
- Department of Cardiovascular Sciences, KU Leuven, Leuven, Belgium
- Department of Cardiac Surgery, University Hospitals Leuven (UZ Leuven), Leuven, Belgium
| | - Keir McCutcheon
- Department of Cardiovascular Sciences, KU Leuven, Leuven, Belgium
| | - Johan Bennett
- Department of Cardiovascular Sciences, KU Leuven, Leuven, Belgium
- Department of Cardiovascular Medicine, University Hospitals Leuven (UZ Leuven), Leuven, Belgium
| | - Manon Van Hecke
- Department of Imaging and Pathology, KU Leuven, Leuven, Belgium
| | - Michiel Algoet
- Department of Cardiovascular Sciences, KU Leuven, Leuven, Belgium
- Department of Cardiac Surgery, University Hospitals Leuven (UZ Leuven), Leuven, Belgium
| | - Stéphanie Bézy
- Department of Cardiovascular Sciences, KU Leuven, Leuven, Belgium
| | - Jürgen Duchenne
- Department of Cardiovascular Sciences, KU Leuven, Leuven, Belgium
| | - Alexis Puvrez
- Department of Cardiovascular Sciences, KU Leuven, Leuven, Belgium
| | - Laurine Wouters
- Department of Cardiovascular Sciences, KU Leuven, Leuven, Belgium
| | - Jens-Uwe Voigt
- Department of Cardiovascular Sciences, KU Leuven, Leuven, Belgium
- Department of Cardiovascular Medicine, University Hospitals Leuven (UZ Leuven), Leuven, Belgium
| | - Tom Adriaenssens
- Department of Cardiovascular Sciences, KU Leuven, Leuven, Belgium
- Department of Cardiovascular Medicine, University Hospitals Leuven (UZ Leuven), Leuven, Belgium
| | - Walter Desmet
- Department of Cardiovascular Sciences, KU Leuven, Leuven, Belgium
- Department of Cardiovascular Medicine, University Hospitals Leuven (UZ Leuven), Leuven, Belgium
| | - Peter Sinnaeve
- Department of Cardiovascular Sciences, KU Leuven, Leuven, Belgium
- Department of Cardiovascular Medicine, University Hospitals Leuven (UZ Leuven), Leuven, Belgium
| | - Peter Verbrugghe
- Department of Cardiovascular Sciences, KU Leuven, Leuven, Belgium
- Department of Cardiac Surgery, University Hospitals Leuven (UZ Leuven), Leuven, Belgium
| | - Wouter Oosterlinck
- Department of Cardiovascular Sciences, KU Leuven, Leuven, Belgium
- Department of Cardiac Surgery, University Hospitals Leuven (UZ Leuven), Leuven, Belgium
| | - Piet Claus
- Department of Cardiovascular Sciences, KU Leuven, Leuven, Belgium
| | - Bart Meuris
- Department of Cardiovascular Sciences, KU Leuven, Leuven, Belgium
- Department of Cardiac Surgery, University Hospitals Leuven (UZ Leuven), Leuven, Belgium
| | - Christophe Dubois
- Department of Cardiovascular Sciences, KU Leuven, Leuven, Belgium
- Department of Cardiovascular Medicine, University Hospitals Leuven (UZ Leuven), Leuven, Belgium
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Eshima K, Ohzono H, Gotoh M, Abe R, Nakamura H, Mitsui Y, Hiraoka K, Okawa T. Effects of adipose-derived cell supplementation on tendon-bone healing in a rat model of chronic rotator cuff tear with suprascapular nerve injury. J Int Med Res 2024; 52:3000605241232550. [PMID: 38456645 PMCID: PMC10924565 DOI: 10.1177/03000605241232550] [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: 08/30/2023] [Accepted: 01/29/2024] [Indexed: 03/09/2024] Open
Abstract
OBJECTIVE To investigate the effect of adipose-derived cells (ADCs) on tendon-bone healing in a rat model of chronic rotator cuff tear (RCT) with suprascapular nerve (SN) injury. METHODS Adult rats underwent right shoulder surgery whereby the supraspinatus was detached, and SN injury was induced. ADCs were cultured from the animals' abdominal fat. At 6 weeks post-surgery, the animals underwent surgical tendon repair; the ADC (+ve) group (n = 18) received an ADC injection, and the ADC (-ve) group (n = 18) received a saline injection. Shoulders were harvested at 10, 14, and 18 weeks and underwent histological, fluorescent, and biomechanical analyses. RESULTS In the ADC (+ve) group, a firm enthesis, including dense mature fibrocartilage and well-aligned cells, were observed in the bone-tendon junction and fatty infiltration was less than in the ADC (-ve) group. Mean maximum stress and linear stiffness was greater in the ADC (+ve) compared with the ADC (-ve) group at 18 weeks. CONCLUSION ADC supplementation showed a positive effect on tendon-bone healing in a rat model of chronic RCT with accompanying SN injury. Therefore, ADC injection may possibly accelerate recovery in massive RCT injuries.
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Affiliation(s)
- Kenichiro Eshima
- Department of Orthopedic Surgery, Social insurance Tagawa Hospital, 10-18 kamihon-machi, Tagawa, Fukuoka 826-0023, Japan
| | - Hiroki Ohzono
- Department of Orthopedic Surgery, Kurume University Medical Center, 151-1 Kokubu-machi, Kurume, Fukuoka 839-0863, Japan
| | - Masafumi Gotoh
- Department of Orthopedic Surgery, Kurume University Medical Center, 151-1 Kokubu-machi, Kurume, Fukuoka 839-0863, Japan
| | - Ryunosuke Abe
- Department of Orthopedic Surgery, Kurume University Medical Center, 151-1 Kokubu-machi, Kurume, Fukuoka 839-0863, Japan
| | - Hidehiro Nakamura
- Department of Orthopedic Surgery, Kurume University Medical Center, 151-1 Kokubu-machi, Kurume, Fukuoka 839-0863, Japan
| | - Yasuhiro Mitsui
- Department of Orthopedic Surgery, Hyakutake Hospital, 4-2-15 mizugae, Saga city, Saga 840-0054, Japan
| | - Koji Hiraoka
- Department of Orthopedic Surgery, Kurume University Hospital, 67 Asahi-machi, Kurume Fukuoka 830-0011, Japan
| | - Takahiro Okawa
- Department of Orthopedic Surgery, Kurume University Medical Center, 151-1 Kokubu-machi, Kurume, Fukuoka 839-0863, Japan
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Jung EK, Chu TH, Kim SA, Vo MC, Nguyen VT, Lee KH, Jung SH, Yoon M, Cho D, Lee JJ, Yoon TM. Efficacy of natural killer cell therapy combined with chemoradiotherapy in murine models of head and neck squamous cell carcinoma. Cytotherapy 2024; 26:242-251. [PMID: 38142382 DOI: 10.1016/j.jcyt.2023.11.002] [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: 04/22/2023] [Revised: 10/24/2023] [Accepted: 11/08/2023] [Indexed: 12/25/2023]
Abstract
BACKGROUND AIMS Natural killer (NK) cell-based cancer immunotherapy is effective when combined with other treatment modalities such as irradiation and chemotherapy. NK cell's antitumor function to treat solid tumor, including head and neck squamous cell carcinoma (HNSCC), has been targeted recently. This study assessed NK cell recruitment in response to chemoradiation therapy (CRT) in HNSCC. METHODS Ex vivo expansion of NK cell, flow cytometry, cell viability assay, cytotoxicity assay, immunohistochemistry, and animal model were performed. RESULTS Mouse NK cells were recruited to the tumor site by CRT in a nude mouse model. Furthermore, expanded and activated human NK cells (eNKs) were recruited to the tumor site in response to CRT, and CRT enhanced the anti-tumor activity of eNK in an NOD/SCID IL-2Rγnull mouse model. Various HNSCC cancer cell lines exhibited different NK cell ligand activation patterns in response to CRT that correlated with NK cell-mediated cytotoxicity. CONCLUSIONS Identifying the activation patterns of NK cell ligands during CRT might improve patient selection for adjuvant NK cell immunotherapy combined with CRT. This is the first study to investigate the NK cell's antitumor function and recruitment with CRT in HNSCC mouse model.
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Affiliation(s)
- Eun Kyung Jung
- Department of Otolaryngology-Head and Neck Surgery, Chonnam National University Medical School and Hwasun Hospital, Hwasun, Jeollanamdo, Korea
| | - Tan-Huy Chu
- Department of Hematology-Oncology, Chonnam National University Medical School and Hwasun Hospital, Hwasun, Jeollanamdo, Korea; Department of Hematology, Pham Ngoc Thach University of Medicine, Ho Chi Minh City, Vietnam
| | - Sun-Ae Kim
- Department of Otolaryngology-Head and Neck Surgery, Chonnam National University Medical School and Hwasun Hospital, Hwasun, Jeollanamdo, Korea
| | - Manh-Cuong Vo
- Department of Hematology-Oncology, Chonnam National University Medical School and Hwasun Hospital, Hwasun, Jeollanamdo, Korea
| | - Van-Tan Nguyen
- Department of Hematology-Oncology, Chonnam National University Medical School and Hwasun Hospital, Hwasun, Jeollanamdo, Korea
| | - Kyung-Hwa Lee
- Department of Pathology, Chonnam National University Medical School and Hwasun Hospital, Hwasun, Jeollanamdo, Korea
| | - Sung-Hoon Jung
- Department of Hematology-Oncology, Chonnam National University Medical School and Hwasun Hospital, Hwasun, Jeollanamdo, Korea
| | - Meesun Yoon
- Department of Radiation Oncology, Chonnam National University Medical School and Hwasun Hospital, Hwasun, Jeollanamdo, Korea
| | - Duck Cho
- Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Je-Jung Lee
- Department of Hematology-Oncology, Chonnam National University Medical School and Hwasun Hospital, Hwasun, Jeollanamdo, Korea.
| | - Tae Mi Yoon
- Department of Otolaryngology-Head and Neck Surgery, Chonnam National University Medical School and Hwasun Hospital, Hwasun, Jeollanamdo, Korea.
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Hewson L, Choo A, Webber DL, Trim PJ, Snel MF, Fedele AO, Hopwood JJ, Hemsley KM, O'Keefe LV. Drosophila melanogaster models of MPS IIIC (Hgsnat-deficiency) highlight the role of glia in disease presentation. J Inherit Metab Dis 2024; 47:340-354. [PMID: 38238109 DOI: 10.1002/jimd.12712] [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: 10/03/2023] [Revised: 12/18/2023] [Accepted: 12/21/2023] [Indexed: 03/16/2024]
Abstract
Sanfilippo syndrome (Mucopolysaccharidosis type III or MPS III) is a recessively inherited neurodegenerative lysosomal storage disorder. Mutations in genes encoding enzymes in the heparan sulphate degradation pathway lead to the accumulation of partially degraded heparan sulphate, resulting ultimately in the development of neurological deficits. Mutations in the gene encoding the membrane protein heparan-α-glucosaminide N-acetyltransferase (HGSNAT; EC2.3.1.78) cause MPS IIIC (OMIM#252930), typified by impaired cognition, sleep-wake cycle changes, hyperactivity and early death, often before adulthood. The precise disease mechanism that causes symptom emergence remains unknown, posing a significant challenge in the development of effective therapeutics. As HGSNAT is conserved in Drosophila melanogaster, we now describe the creation and characterisation of the first Drosophila models of MPS IIIC. Flies with either an endogenous insertion mutation or RNAi-mediated knockdown of hgsnat were confirmed to have a reduced level of HGSNAT transcripts and age-dependent accumulation of heparan sulphate leading to engorgement of the endo/lysosomal compartment. This resulted in abnormalities at the pre-synapse, defective climbing and reduced overall activity. Altered circadian rhythms (shift in peak morning activity) were seen in hgsnat neuronal knockdown lines. Further, when hgsnat was knocked down in specific glial subsets (wrapping, cortical, astrocytes or subperineural glia), impaired climbing or reduced activity was noted, implying that hgsnat function in these specific glial subtypes contributes significantly to this behaviour and targeting treatments to these cell groups may be necessary to ameliorate or prevent symptom onset. These novel models of MPS IIIC provide critical research tools for delineating the key cellular pathways causal in the onset of neurodegeneration in this presently untreatable disorder.
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Affiliation(s)
- Laura Hewson
- Department of Molecular and Biomedical Science, School of Biological Sciences, The University of Adelaide, Adelaide, South Australia, Australia
| | - Amanda Choo
- Department of Molecular and Biomedical Science, School of Biological Sciences, The University of Adelaide, Adelaide, South Australia, Australia
| | - Dani L Webber
- Department of Molecular and Biomedical Science, School of Biological Sciences, The University of Adelaide, Adelaide, South Australia, Australia
| | - Paul J Trim
- Proteomics, Metabolomics & MS-Imaging Core, South Australian Health and Medical Research Institute, Adelaide, South Australia, Australia
| | - Marten F Snel
- Proteomics, Metabolomics & MS-Imaging Core, South Australian Health and Medical Research Institute, Adelaide, South Australia, Australia
| | - Anthony O Fedele
- Hopwood Centre for Neurobiology, South Australian Health and Medical Research Institute, Adelaide, South Australia, Australia
| | - John J Hopwood
- Hopwood Centre for Neurobiology, South Australian Health and Medical Research Institute, Adelaide, South Australia, Australia
| | - Kim M Hemsley
- Childhood Dementia Research Group, Flinders Health and Medical Research Institute, Flinders University, Bedford Park, South Australia, Australia
| | - Louise V O'Keefe
- Department of Molecular and Biomedical Science, School of Biological Sciences, The University of Adelaide, Adelaide, South Australia, Australia
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