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Huerta MÁ, Cisneros E, Alique M, Roza C. Strategies for measuring non-evoked pain in preclinical models of neuropathic pain: Systematic review. Neurosci Biobehav Rev 2024; 163:105761. [PMID: 38852847 DOI: 10.1016/j.neubiorev.2024.105761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Revised: 05/28/2024] [Accepted: 06/04/2024] [Indexed: 06/11/2024]
Abstract
The development of new analgesics for neuropathic pain treatment is crucial. The failure of promising drugs in clinical trials may be related to the over-reliance on reflex-based responses (evoked pain) in preclinical drug testing, which may not fully represent clinical neuropathic pain, characterized by spontaneous non-evoked pain (NEP). Hence, strategies for assessing NEP in preclinical studies emerged. This systematic review identified 443 articles evaluating NEP in neuropathic pain models (mainly traumatic nerve injuries in male rodents). An exponential growth in NEP evaluation was observed, which was assessed using 48 different tests classified in 12 NEP-related outcomes: anxiety, exploration/locomotion, paw lifting, depression, conditioned place preference, gait, autotomy, wellbeing, facial grooming, cognitive impairment, facial pain expressions and vocalizations. Although most of these outcomes showed clear limitations, our analysis suggests that conditioning-associated outcomes, pain-related comorbidities, and gait evaluation may be the most effective strategies. Moreover, a minimal part of the studies evaluated standard analgesics. The greater emphasis on evaluating NEP aligning with clinical pain symptoms may enhance analgesic drug development, improving clinical translation.
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Affiliation(s)
- Miguel Á Huerta
- Department of Pharmacology, Faculty of Medicine, University of Granada, Granada 18016, Spain; Institute of Neuroscience, Biomedical Research Center, University of Granada, 18100 Armilla, Granada, Spain; Biosanitary Research Institute ibs.GRANADA, Granada 18012, Spain
| | - Elsa Cisneros
- Health Sciences School, Centro Universitario Internacional de Madrid (CUNIMAD), Madrid, Spain; Health Sciences School, Universidad Internacional de La Rioja (UNIR), Logroño, Spain
| | - Matilde Alique
- Department of System's Biology, Medical School, University of Alcala de Henares, Alcalá de Henares, Spain; Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid 28034, Spain
| | - Carolina Roza
- Department of System's Biology, Medical School, University of Alcala de Henares, Alcalá de Henares, Spain.
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2
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Shi YQ, Sun ZH, Wang ZZ, Su CY, Zhang W, Yu LY, Xu Y, Gao YL, Wang HB, Tian JW, Li CM. A novel role for microtubule affinity-regulating kinases in neuropathic pain. Br J Pharmacol 2024; 181:2012-2032. [PMID: 38112022 DOI: 10.1111/bph.16303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 09/15/2023] [Accepted: 10/03/2023] [Indexed: 12/20/2023] Open
Abstract
BACKGROUND AND PURPOSE Neuropathic pain affects millions of patients, but there are currently few viable therapeutic options available. Microtubule affinity-regulating kinases (MARKs) regulate the dynamics of microtubules and participate in synaptic remodelling. It is unclear whether these changes are involved in the central sensitization of neuropathic pain. This study examined the role of MARK1 or MARK2 in regulating neurosynaptic plasticity induced by neuropathic pain. EXPERIMENTAL APPROACH A rat spinal nerve ligation (SNL) model was established to induce neuropathic pain. The role of MARKs in nociceptive regulation was assessed by genetically knocking down MARK1 or MARK2 in amygdala and systemic administration of PCC0105003, a novel small molecule MARK inhibitor. Cognitive function, anxiety-like behaviours and motor coordination capability were also examined in SNL rats. Synaptic remodelling-associated signalling changes were detected with electrophysiological recording, Golgi-Cox staining, western blotting and qRT-PCR. KEY RESULTS MARK1 and MARK2 expression levels in amygdala and spinal dorsal horn were elevated in SNL rats. MARK1 or MARK2 knockdown in amygdala and PCC0105003 treatment partially attenuated pain-like behaviours along with improving cognitive deficit, anxiogenic-like behaviours and motor coordination in SNL rats. Inhibition of MARKs signalling reversed synaptic plasticity at the functional and structural levels by suppressing NR2B/GluR1 and EB3/Drebrin signalling pathways both in amygdala and spinal dorsal horn. CONCLUSION AND IMPLICATIONS These results suggest that MARKs-mediated synaptic remodelling plays a key role in the pathogenesis of neuropathic pain and that pharmacological inhibitors of MARKs such as PCC0105003 could represent a novel therapeutic strategy for the management of neuropathic pain.
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Affiliation(s)
- Yao-Qin Shi
- From the school of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong Province, China
| | - Zhi-Hong Sun
- From the school of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong Province, China
| | - Zhe-Zhe Wang
- From the school of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong Province, China
| | - Chun-Yu Su
- From the school of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong Province, China
| | - Wei Zhang
- From the school of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong Province, China
| | - Lin-Yao Yu
- From the school of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong Province, China
| | - Yang Xu
- From the school of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong Province, China
| | - Yong-Lin Gao
- College of Life Sciences, Yantai University, Yantai, China
| | - Hong-Bo Wang
- From the school of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong Province, China
| | - Jing-Wei Tian
- From the school of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong Province, China
| | - Chun-Mei Li
- From the school of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong Province, China
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3
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Nekanti U, Sakthivel PS, Zahedi A, Creasman DA, Nishi RA, Dumont CM, Piltti KM, Guardamondo GL, Hernandez N, Chen X, Song H, Lin X, Martinez J, On L, Lakatos A, Pawar K, David BT, Guo Z, Seidlits SK, Xu X, Shea LD, Cummings BJ, Anderson AJ. Multichannel bridges and NSC synergize to enhance axon regeneration, myelination, synaptic reconnection, and recovery after SCI. NPJ Regen Med 2024; 9:12. [PMID: 38499577 PMCID: PMC10948859 DOI: 10.1038/s41536-024-00356-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 02/15/2024] [Indexed: 03/20/2024] Open
Abstract
Regeneration in the injured spinal cord is limited by physical and chemical barriers. Acute implantation of a multichannel poly(lactide-co-glycolide) (PLG) bridge mechanically stabilizes the injury, modulates inflammation, and provides a permissive environment for rapid cellularization and robust axonal regrowth through this otherwise inhibitory milieu. However, without additional intervention, regenerated axons remain largely unmyelinated (<10%), limiting functional repair. While transplanted human neural stem cells (hNSC) myelinate axons after spinal cord injury (SCI), hNSC fate is highly influenced by the SCI inflammatory microenvironment, also limiting functional repair. Accordingly, we investigated the combination of PLG scaffold bridges with hNSC to improve histological and functional outcome after SCI. In vitro, hNSC culture on a PLG scaffold increased oligodendroglial lineage selection after inflammatory challenge. In vivo, acute PLG bridge implantation followed by chronic hNSC transplantation demonstrated a robust capacity of donor human cells to migrate into PLG bridge channels along regenerating axons and integrate into the host spinal cord as myelinating oligodendrocytes and synaptically integrated neurons. Axons that regenerated through the PLG bridge formed synaptic circuits that connected the ipsilateral forelimb muscle to contralateral motor cortex. hNSC transplantation significantly enhanced the total number of regenerating and myelinated axons identified within the PLG bridge. Finally, the combination of acute bridge implantation and hNSC transplantation exhibited robust improvement in locomotor recovery. These data identify a successful strategy to enhance neurorepair through a temporally layered approach using acute bridge implantation and chronic cell transplantation to spare tissue, promote regeneration, and maximize the function of new axonal connections.
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Affiliation(s)
- Usha Nekanti
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA.
- Department of Anatomy and Neurobiology, University of California, Irvine, CA, USA.
| | - Pooja S Sakthivel
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
- Department of Anatomy and Neurobiology, University of California, Irvine, CA, USA
| | - Atena Zahedi
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Dana A Creasman
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
- Department of Anatomy and Neurobiology, University of California, Irvine, CA, USA
| | - Rebecca A Nishi
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Courtney M Dumont
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Katja M Piltti
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Glenn L Guardamondo
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Norbert Hernandez
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Xingyuan Chen
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Hui Song
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Xiaoxiao Lin
- Department of Anatomy and Neurobiology, University of California, Irvine, CA, USA
| | - Joshua Martinez
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Lillian On
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Anita Lakatos
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Kiran Pawar
- Department of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Brian T David
- Department of Neurosurgery, Rush University Medical Center, Chicago, IL, USA
| | - Zhiling Guo
- Department of Medicine & Susan Samueli Integrative Health Institute, University of California, Irvine, CA, USA
| | - Stephanie K Seidlits
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Xiangmin Xu
- Department of Anatomy and Neurobiology, University of California, Irvine, CA, USA
- Center for Neural Circuit Mapping, University of California Irvine, Irvine, CA, USA
| | - Lonnie D Shea
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Brian J Cummings
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
- Department of Anatomy and Neurobiology, University of California, Irvine, CA, USA
- Department of Physical Medicine and Rehabilitation, University of California, Irvine, CA, USA
- Institute for Memory Impairments & Neurological Disorder, University of California Irvine, Irvine, CA, USA
| | - Aileen J Anderson
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA.
- Department of Anatomy and Neurobiology, University of California, Irvine, CA, USA.
- Department of Physical Medicine and Rehabilitation, University of California, Irvine, CA, USA.
- Institute for Memory Impairments & Neurological Disorder, University of California Irvine, Irvine, CA, USA.
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4
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Huang H, Li J, Wang C, Xing L, Cao H, Wang C, Leung CY, Li Z, Xi Y, Tian H, Li F, Sun D. Using Decellularized Magnetic Microrobots to Deliver Functional Cells for Cartilage Regeneration. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2304088. [PMID: 37939310 DOI: 10.1002/smll.202304088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 09/25/2023] [Indexed: 11/10/2023]
Abstract
The use of natural cartilage extracellular matrix (ECM) has gained widespread attention in the field of cartilage tissue engineering. However, current approaches for delivering functional scaffolds for osteoarthritis (OA) therapy rely on knee surgery, which is limited by the narrow and complex structure of the articular cavity and carries the risk of injuring surrounding tissues. This work introduces a novel cell microcarrier, magnetized cartilage ECM-derived scaffolds (M-CEDSs), which are derived from decellularized natural porcine cartilage ECM. Human bone marrow mesenchymal stem cells are selected for their therapeutic potential in OA treatments. Owing to their natural composition, M-CEDSs have a biomechanical environment similar to that of human cartilage and can efficiently load functional cells while maintaining high mobility. The cells are released spontaneously at a target location for at least 20 days. Furthermore, cell-seeded M-CEDSs show better knee joint function recovery than control groups 3 weeks after surgery in preclinical experiments, and ex vivo experiments reveal that M-CEDSs can rapidly aggregate inside tissue samples. This work demonstrates the use of decellularized microrobots for cell delivery and their in vivo therapeutic effects in preclinical tests.
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Affiliation(s)
- Hanjin Huang
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR, 999077, China
| | - Junyang Li
- Department of Electronic Engineering, Ocean University of China, Qingdao, 266100, China
| | - Cheng Wang
- Beijing Key Laboratory of Spinal Disease Research, Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Department of Orthopaedics, Peking University Third Hospital, Beijing, 100191, China
| | - Liuxi Xing
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR, 999077, China
| | - Hui Cao
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR, 999077, China
| | - Chang Wang
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR, 999077, China
| | - Chung Yan Leung
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR, 999077, China
| | - Zongze Li
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR, 999077, China
| | - Yue Xi
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR, 999077, China
| | - Hua Tian
- Beijing Key Laboratory of Spinal Disease Research, Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Department of Orthopaedics, Peking University Third Hospital, Beijing, 100191, China
| | - Feng Li
- Beijing Key Laboratory of Spinal Disease Research, Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Department of Orthopaedics, Peking University Third Hospital, Beijing, 100191, China
| | - Dong Sun
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR, 999077, China
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5
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Ozdemir Y, Nakamoto K, Boivin B, Bullock D, Andrews NA, González-Cano R, Costigan M. Quantification of stimulus-evoked tactile allodynia in free moving mice by the chainmail sensitivity test. Front Pharmacol 2024; 15:1352464. [PMID: 38464715 PMCID: PMC10920263 DOI: 10.3389/fphar.2024.1352464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 02/01/2024] [Indexed: 03/12/2024] Open
Abstract
Chronic pain occurs at epidemic levels throughout the population. Hypersensitivity to touch, is a cardinal symptom of chronic pain. Despite dedicated research for over a century, quantifying this hypersensitivity has remained impossible at scale. To address these issues, we developed the Chainmail Sensitivity Test (CST). Our results show that control mice spend significantly more time on the chainmail portion of the device than mice subject to neuropathy. Treatment with gabapentin abolishes this difference. CST-derived data correlate well with von Frey measurements and quantify hypersensitivity due to inflammation. Our study demonstrates the potential of the CST as a standardized tool for assessing mechanical hypersensitivity in mice with minimal operator input.
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Affiliation(s)
- Yildirim Ozdemir
- The Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, MA, United States
| | - Kazuo Nakamoto
- The Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, MA, United States
- Department of Clinical Pharmacy, School of Pharmaceutical Sciences, Kobe Gakuin University, Kobe, Japan
| | - Bruno Boivin
- The Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, MA, United States
| | - Daniel Bullock
- The Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, MA, United States
| | - Nick A. Andrews
- The Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, MA, United States
- In Vivo Scientific Services, The Salk Institute for Biological Studies, La Jolla, CA, United States
| | - Rafael González-Cano
- The Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, MA, United States
- Department of Pharmacology, Faculty of Medicine and Biomedical Research Center (Neurosciences Institute), Biosanitary Research Institute ibs.GRANADA, University of Granada, Granada, Spain
| | - Michael Costigan
- The Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, MA, United States
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6
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Amorim D, Fonseca-Rodrigues D, David-Pereira A, Costa O, Lima AP, Nogueira R, Cruz R, Martins AS, Sousa L, Oliveira F, Pereira H, Pirraco R, Pertovaara A, Almeida A, Pinto-Ribeiro F. Injection of kaolin/carrageenan in the rat knee joint induces progressive experimental knee osteoarthritis. Pain 2023; 164:2477-2490. [PMID: 37390363 DOI: 10.1097/j.pain.0000000000002954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Accepted: 04/25/2023] [Indexed: 07/02/2023]
Abstract
ABSTRACT Osteoarthritis (OA), the most common joint disorder worldwide, is characterized by progressive degeneration of articular and periarticular structures, leading to physical and emotional impairments that greatly affect the quality of life of patients. Unfortunately, no therapy has been able to halt the progression of the disease. Owing to the complexity of OA, most animal models are only able to mimic a specific stage or feature of the human disorder. In this work, we demonstrate the intraarticular injection of kaolin or carrageenan leads to the progressive degeneration of the rat's knee joint, accompanied by mechanical hyperalgesia and allodynia, gait impairments (reduced contact area of the affected limb), and radiological and histopathological findings concomitant with the development of human grade 4 OA. In addition, animals also display emotional impairments 4 weeks after induction, namely, anxious and depressive-like behaviour, important and common comorbidities of human OA patients. Overall, prolonging kaolin or carrageenan-induced monoarthritis mimics several important physical and psychological features of human OA in both male and female rodents and could be further applied in long-term studies of OA-associated chronic pain.
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Affiliation(s)
- Diana Amorim
- Life and Health Sciences Research Institute (ICVS), University of Minho, Braga, Portugal
- ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
- Institute of Biomedicine/Physiology, University of Helsinki, Helsinki, Finland
| | - Diana Fonseca-Rodrigues
- Life and Health Sciences Research Institute (ICVS), University of Minho, Braga, Portugal
- ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Ana David-Pereira
- Life and Health Sciences Research Institute (ICVS), University of Minho, Braga, Portugal
- ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
- Wolfson CARD, Institute of Psychology, Psychiatry and Neuroscience, King's College London, London, United Kingdom
| | - Octávia Costa
- Life and Health Sciences Research Institute (ICVS), University of Minho, Braga, Portugal
- ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Antónia Palhares Lima
- Life and Health Sciences Research Institute (ICVS), University of Minho, Braga, Portugal
- ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Rosete Nogueira
- Life and Health Sciences Research Institute (ICVS), University of Minho, Braga, Portugal
- ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Rute Cruz
- Life and Health Sciences Research Institute (ICVS), University of Minho, Braga, Portugal
- ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Ana Sofia Martins
- Life and Health Sciences Research Institute (ICVS), University of Minho, Braga, Portugal
- ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Liliana Sousa
- Life and Health Sciences Research Institute (ICVS), University of Minho, Braga, Portugal
- ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | | | - Hélder Pereira
- ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
- 3B's Research Group-Biomaterials, Biodegradables and Biomimetics, Minho University, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Guimarães, Portugal
| | - Rogério Pirraco
- ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
- 3B's Research Group-Biomaterials, Biodegradables and Biomimetics, Minho University, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Guimarães, Portugal
| | - Antti Pertovaara
- Institute of Biomedicine/Physiology, University of Helsinki, Helsinki, Finland
| | - Armando Almeida
- Life and Health Sciences Research Institute (ICVS), University of Minho, Braga, Portugal
- ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Filipa Pinto-Ribeiro
- Life and Health Sciences Research Institute (ICVS), University of Minho, Braga, Portugal
- ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
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7
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Fukui D, Nishiyama D, Yamanaka M, Tamai H, Nishio N, Kawakami M, Yamada H. Development of a Novel Rat Knee Osteoarthritis Model Induced by Medial Meniscus Extrusion. Cartilage 2023:19476035231205680. [PMID: 37837194 DOI: 10.1177/19476035231205680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/15/2023] Open
Abstract
OBJECTIVE The medial meniscus extrusion (MME) is associated with increased stress on the knee joint, which leads to cartilage degeneration. To evaluate the etiology of knee osteoarthritis, it is extremely important to create animal models of the disease that more closely resemble actual clinical conditions in terms of symptomatology, molecular biology, and histology. This study aimed to create a clinically relevant model of MME in rats. DESIGN Behavioral, molecular biological, and histological changes in the newly developed rat MME model were compared with those in sham and medial meniscus transection and medial collateral ligament transection (MMT) models to examine the characteristics of this model. RESULTS In the MME rat model, behavioral evaluation shows abnormalities in gait compared with the other 2 groups, and molecular biological evaluation of the infrapatellar synovia of rats shows that gene expression of inflammatory cytokines, matrix-degrading enzymes, and pain-related nerve growth factor was increased compared with the sham group. Furthermore, histological evaluation reveals that cartilage degeneration was the most severe in the MME group. CONCLUSIONS The newly developed MME model reproduced the characteristic pathology of MME in clinical practice, such as severe pain, inflammation, and rapid progression of osteoarthritis. The MME model, which might more closely mimic human knee osteoarthritis (OA), could be a useful model for elucidating the pathophysiology and considering therapeutic management for knee OA.
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Affiliation(s)
- Daisuke Fukui
- Department of Orthopedic Surgery, Wakayama Medical University, Wakayama, Japan
| | - Daisuke Nishiyama
- Department of Orthopedic Surgery, Wakayama Medical University, Wakayama, Japan
| | - Manabu Yamanaka
- Department of Orthopedic Surgery, Wakayama Medical University, Wakayama, Japan
| | - Hidenobu Tamai
- Department of Orthopedic Surgery, Wakayama Medical University, Wakayama, Japan
| | - Naoko Nishio
- Department of Orthopedic Surgery, Wakayama Medical University, Wakayama, Japan
| | - Mamoru Kawakami
- Department of Orthopedic Surgery, Saiseikai Wakayama Hospital, Wakayama, Japan
| | - Hiroshi Yamada
- Department of Orthopedic Surgery, Wakayama Medical University, Wakayama, Japan
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8
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Fogarty NL, Johnson T, Kwok B, Lin A, Tsinman TK, Jiang X, Koyama E, Han L, Baxter JR, Mauck RL, Dyment NA. Reduction in postnatal weight-bearing does not alter the trajectory of murine meniscus growth and maturation. J Orthop Res 2023. [PMID: 37804210 DOI: 10.1002/jor.25711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 09/27/2023] [Accepted: 10/05/2023] [Indexed: 10/09/2023]
Abstract
The early postnatal period represents a critical window for the maturation and development of orthopedic tissues, including those within the knee joint. To understand how mechanical loading impacts the maturational trajectory of the meniscus and other tissues of the hindlimb, perturbation of postnatal weight bearing was achieved through surgical resection of the sciatic nerve in neonatal mice at 1 or 14 days old. Sciatic nerve resection (SNR) produced significant and persistent disruptions in gait, leading to reduced tibial length and reductions in Achilles tendon mechanical properties. However, SNR resulted in minimal disruptions in morphometric parameters of the menisci and other structures in the knee joint, with no detectable differences in Col1a1-YFP or Col2a1-CFP expressing cells within the menisci. Furthermore, micromechanical properties of the meniscus and cartilage (as assessed by atomic force microscopy-based nanoindentation testing) were not different between experimental groups. In contrast to our initial hypothesis, reduced hindlimb weight bearing via neonatal SNR did not significantly impact the growth and development of the knee meniscus. This unexpected finding demonstrates that the input mechanical threshold required to sustain meniscus development may be lower than previously hypothesized, though future studies incorporating skeletal kinematic models coupled with force plate measurements will be required to calculate the loads passing through the affected hindlimb and precisely define these thresholds. Collectively, these results provide insight into the mechanobiological responses of the meniscus to alterations in load, and contribute to our understanding of the factors that influence normal postnatal development.
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Affiliation(s)
- Natalie L Fogarty
- McKay Orthopaedic Research Laboratory, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Talayah Johnson
- McKay Orthopaedic Research Laboratory, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Bryan Kwok
- School of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia, Pennsylvania, USA
| | - Alisia Lin
- McKay Orthopaedic Research Laboratory, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Tonia K Tsinman
- McKay Orthopaedic Research Laboratory, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Xi Jiang
- McKay Orthopaedic Research Laboratory, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Eiki Koyama
- Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Lin Han
- School of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia, Pennsylvania, USA
| | - Josh R Baxter
- McKay Orthopaedic Research Laboratory, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Robert L Mauck
- McKay Orthopaedic Research Laboratory, University of Pennsylvania, Philadelphia, Pennsylvania, USA
- Translational Musculoskeletal Research Laboratory, CMC VA Medical Center, Philadelphia, Pennsylvania, USA
| | - Nathaniel A Dyment
- McKay Orthopaedic Research Laboratory, University of Pennsylvania, Philadelphia, Pennsylvania, USA
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9
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Ritter J, Menger M, Herath SC, Histing T, Kolbenschlag J, Daigeler A, Heinzel JC, Prahm C. Translational evaluation of gait behavior in rodent models of arthritic disorders with the CatWalk device - a narrative review. Front Med (Lausanne) 2023; 10:1255215. [PMID: 37869169 PMCID: PMC10587608 DOI: 10.3389/fmed.2023.1255215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Accepted: 09/21/2023] [Indexed: 10/24/2023] Open
Abstract
Arthritic disorders have become one of the main contributors to the global burden of disease. Today, they are one of the leading causes of chronic pain and disability worldwide. Current therapies are incapable of treating pain sufficiently and preventing disease progression. The lack of understanding basic mechanisms underlying the initiation, maintenance and progression of arthritic disorders and related symptoms represent the major obstacle in the search for adequate treatments. For a long time, histological evaluation of joint pathology was the predominant outcome parameter in preclinical arthritis models. Nevertheless, quantification of pain and functional limitations analogs to arthritis related symptoms in humans is essential to enable bench to bedside translation and to evaluate the effectiveness of new treatment strategies. As the experience of pain and functional deficits are often associated with altered gait behavior, in the last decades, automated gait analysis has become a well-established tool for the quantitative evaluation of the sequalae of arthritic disorders in animal models. The purpose of this review is to provide a detailed overview on the current literature on the use of the CatWalk gait analysis system in rodent models of arthritic disorders, e.g., Osteoarthritis, Monoarthritis and Rheumatoid Arthritis. Special focus is put on the assessment and monitoring of pain-related behavior during the course of the disease. The capability of evaluating the effect of distinct treatment strategies and the future potential for the application of the CatWalk in rodent models of arthritic disorders is also addressed in this review. Finally, we discuss important consideration and provide recommendations on the use of the CatWalk in preclinical models of arthritic diseases.
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Affiliation(s)
- Jana Ritter
- Department of Hand-, Plastic, Reconstructive and Burn Surgery, BG Klinik Tuebingen, University of Tuebingen, Tuebingen, Germany
| | - Maximilian Menger
- Department of Trauma and Reconstructive Surgery, BG Klinik Tuebingen, University of Tuebingen, Tuebingen, Germany
| | - Steven C Herath
- Department of Trauma and Reconstructive Surgery, BG Klinik Tuebingen, University of Tuebingen, Tuebingen, Germany
| | - Tina Histing
- Department of Trauma and Reconstructive Surgery, BG Klinik Tuebingen, University of Tuebingen, Tuebingen, Germany
| | - Jonas Kolbenschlag
- Department of Hand-, Plastic, Reconstructive and Burn Surgery, BG Klinik Tuebingen, University of Tuebingen, Tuebingen, Germany
| | - Adrien Daigeler
- Department of Hand-, Plastic, Reconstructive and Burn Surgery, BG Klinik Tuebingen, University of Tuebingen, Tuebingen, Germany
| | - Johannes C Heinzel
- Department of Hand-, Plastic, Reconstructive and Burn Surgery, BG Klinik Tuebingen, University of Tuebingen, Tuebingen, Germany
- Ludwig Boltzmann Institute for Traumatology - The Research Center in Cooperation with AUVA, Vienna, Austria
- Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Cosima Prahm
- Department of Hand-, Plastic, Reconstructive and Burn Surgery, BG Klinik Tuebingen, University of Tuebingen, Tuebingen, Germany
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10
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Valdrighi N, Blom AB, Vago JP, van Beuningen HM, Vitters EL, Helsen MM, Walgreen B, Arntz OJ, Koenders MI, van der Kraan PM, Blaney Davidson EN, van de Loo FAJ. Innate Immunity and Sex: Distinct Inflammatory Profiles Associated with Murine Pain in Acute Synovitis. Cells 2023; 12:1913. [PMID: 37508577 PMCID: PMC10378550 DOI: 10.3390/cells12141913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Revised: 07/15/2023] [Accepted: 07/20/2023] [Indexed: 07/30/2023] Open
Abstract
Joint pain severity in arthritic diseases differs between sexes and is often more pronounced in women. This disparity is thought to stem from biological mechanisms, particularly innate immunity, yet the understanding of sex-specific differences in arthritic pain remains incomplete. This study aims to investigate these disparities using an innate immunity-driven inflammation model induced by intra-articular injections of Streptococcus Cell Wall fragments to mimic both acute and pre-sensitized joint conditions. Nociceptive behavior was evaluated via gait analysis and static weight-bearing, and inflammation was evaluated via joint histology and the synovial gene expression involved in immune response. Although acute inflammation and pain severity were comparable between sexes, distinct associations between synovial inflammatory gene expression and static nociceptive behavior emerged. These associations delineated sex-specific relationships with pain, highlighting differential gene interactions (Il6 versus Cybb on day 1 and Cyba/Gas6 versus Nos2 on day 8) between sexes. In conclusion, our study found that, despite similar pain severity between sexes, the association of inflammatory synovial genes revealed sex-specific differences in the molecular inflammatory mechanisms underlying pain. These findings suggest a path towards more personalized treatment strategies for pain management in arthritis and other inflammatory joint diseases.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - Fons A. J. van de Loo
- Experimental Rheumatology, Radboud University Medical Center, Geert Grooteplein Zuid 8, 6525 GA Nijmegen, The Netherlands; (N.V.); (A.B.B.); (J.P.V.); (H.M.v.B.); (E.L.V.); (M.M.H.); (B.W.); (O.J.A.); (M.I.K.); (P.M.v.d.K.); (E.N.B.D.)
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11
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Jensen NO, Burris B, Zhou L, Yamada H, Reyes C, Pincus Z, Mokalled MH. Functional trajectories during innate spinal cord repair. Front Mol Neurosci 2023; 16:1155754. [PMID: 37492522 PMCID: PMC10365889 DOI: 10.3389/fnmol.2023.1155754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 05/26/2023] [Indexed: 07/27/2023] Open
Abstract
Adult zebrafish are capable of anatomical and functional recovery following severe spinal cord injury. Axon growth, glial bridging and adult neurogenesis are hallmarks of cellular regeneration during spinal cord repair. However, the correlation between these cellular regenerative processes and functional recovery remains to be elucidated. Whereas the majority of established functional regeneration metrics measure swim capacity, we hypothesize that gait quality is more directly related to neurological health. Here, we performed a longitudinal swim tracking study for 60 individual zebrafish spanning 8 weeks of spinal cord regeneration. Multiple swim parameters as well as axonal and glial bridging were integrated. We established rostral compensation as a new gait quality metric that highly correlates with functional recovery. Tensor component analysis of longitudinal data supports a correspondence between functional recovery trajectories and neurological outcomes. Moreover, our studies predicted and validated that a subset of functional regeneration parameters measured 1 to 2 weeks post-injury is sufficient to predict the regenerative outcomes of individual animals at 8 weeks post-injury. Our findings established new functional regeneration parameters and generated a comprehensive correlative database between various functional and cellular regeneration outputs.
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Affiliation(s)
- Nicholas O. Jensen
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO, United States
- Center of Regenerative Medicine, Washington University School of Medicine, St. Louis, MO, United States
| | - Brooke Burris
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO, United States
- Center of Regenerative Medicine, Washington University School of Medicine, St. Louis, MO, United States
| | - Lili Zhou
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO, United States
- Center of Regenerative Medicine, Washington University School of Medicine, St. Louis, MO, United States
| | - Hunter Yamada
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO, United States
- Center of Regenerative Medicine, Washington University School of Medicine, St. Louis, MO, United States
| | - Catrina Reyes
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO, United States
- Center of Regenerative Medicine, Washington University School of Medicine, St. Louis, MO, United States
| | - Zachary Pincus
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO, United States
- Department of Genetics, Washington University School of Medicine, St. Louis, MO, United States
| | - Mayssa H. Mokalled
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO, United States
- Center of Regenerative Medicine, Washington University School of Medicine, St. Louis, MO, United States
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12
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von der Ahe C, Marahrens H, Schwarze M, Angrisani N, Reifenrath J. Pressure sensing mat as an objective and sensitive tool for the evaluation of lameness in rabbits. PLoS One 2023; 18:e0286918. [PMID: 37418422 PMCID: PMC10328299 DOI: 10.1371/journal.pone.0286918] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 05/25/2023] [Indexed: 07/09/2023] Open
Abstract
In orthopaedic research, the analysis of the gait pattern is an often-used evaluation method. It allows an assessment of changes in motion sequence and pain level during postoperative follow up periods. Visual assessments are highly subjective and dependent on the circumstances. Particular challenge in rabbits is their hopping gait pattern. The aim of the present study was to establish a more objective and sensitive lameness evaluation using a pressure sensing mat. Twelve NZW rabbits were implemented in the study. They got an artificial anterior cruciate ligament transection of the right knee in connection with an experimental study, which investigated PTOA treatment. Rabbits were examined by a visual lameness score. Additionally, load of the hindlimbs was measured by the use of a pressure sensing mat and a video was recorded. Peak pressure and time force integral, defined as cumulated integral of all sensors associated to a hind paw, were evaluated. Preoperative data were collected on three independent days. As postoperative measurement time points, week 1 and week 12 after surgery were chosen. The subjective visual scoring was compared to the objective data of the pressure sensing mat. Following the visual score, lameness in week one was mild to moderate. In week twelve, rabbits were evaluated as lame free bar one. Contrary, following the values of the sensor mat, lameness in week one appeared to be more pronounced and almost all rabbits still showed low-grade lameness in week twelve. Consequently, the pressure sensing mat is more sensitive than the visual score and captures the grade of lameness much more accurately. For specific orthopaedic issues, where subtle differences in lameness are important to detect, the used system is a good supplementary evaluation method.
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Affiliation(s)
- Christin von der Ahe
- Clinic for Orthopaedic Surgery, Hannover Medical School, Hannover, Lower Saxony, Germany
- Lower Saxony Centre for Biomedical Engineering, Implant Research and Development (NIFE), Hannover Medical School, Hannover, Lower Saxony, Germany
| | - Hannah Marahrens
- Clinic for Orthopaedic Surgery, Hannover Medical School, Hannover, Lower Saxony, Germany
- Clinic for Small Cloven-hoofed Animals and Forensic Medicine and Ambulatory Clinic, University of Veterinary Medicine Hannover, Hannover, Lower Saxony, Germany
| | - Michael Schwarze
- Clinic for Orthopaedic Surgery, Hannover Medical School, Hannover, Lower Saxony, Germany
| | - Nina Angrisani
- Clinic for Orthopaedic Surgery, Hannover Medical School, Hannover, Lower Saxony, Germany
- Lower Saxony Centre for Biomedical Engineering, Implant Research and Development (NIFE), Hannover Medical School, Hannover, Lower Saxony, Germany
| | - Janin Reifenrath
- Clinic for Orthopaedic Surgery, Hannover Medical School, Hannover, Lower Saxony, Germany
- Lower Saxony Centre for Biomedical Engineering, Implant Research and Development (NIFE), Hannover Medical School, Hannover, Lower Saxony, Germany
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Manto M, Cendelin J, Strupp M, Mitoma H. Advances in cerebellar disorders: pre-clinical models, therapeutic targets, and challenges. Expert Opin Ther Targets 2023; 27:965-987. [PMID: 37768297 DOI: 10.1080/14728222.2023.2263911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 09/24/2023] [Indexed: 09/29/2023]
Abstract
INTRODUCTION Cerebellar ataxias (CAs) represent neurological disorders with multiple etiologies and a high phenotypic variability. Despite progress in the understanding of pathogenesis, few therapies are available so far. Closing the loop between preclinical studies and therapeutic trials is important, given the impact of CAs upon patients' health and the roles of the cerebellum in multiple domains. Because of a rapid advance in research on CAs, it is necessary to summarize the main findings and discuss future directions. AREAS COVERED We focus our discussion on preclinical models, cerebellar reserve, the therapeutic management of CAs, and suitable surrogate markers. We searched Web of Science and PubMed using keywords relevant to cerebellar diseases, therapy, and preclinical models. EXPERT OPINION There are many symptomatic and/or disease-modifying therapeutic approaches under investigation. For therapy development, preclinical studies, standardization of disease evaluation, safety assessment, and demonstration of clinical improvements are essential. Stage of the disease and the level of the cerebellar reserve determine the goals of the therapy. Deficits in multiple categories and heterogeneity of CAs may require disease-, stage-, and symptom-specific therapies. More research is needed to clarify how therapies targeting the cerebellum influence both basal ganglia and the cerebral cortex, poorly explored domains in CAs.
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Affiliation(s)
- Mario Manto
- Service des Neurosciences, University of Mons, Mons, Belgium
| | - Jan Cendelin
- Department of Pathophysiology, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
| | - Michael Strupp
- Department of Neurology and German Center for Vertigo and Balance Disorders, Ludwig Maximilians University, Munich, Germany
| | - Hiroshi Mitoma
- Department of Medical Education, Tokyo medical University, Tokyo, Japan
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Sucha M, Benediktova S, Tichanek F, Jedlicka J, Kapl S, Jelinkova D, Purkartova Z, Tuma J, Kuncova J, Cendelin J. Experimental Treatment with Edaravone in a Mouse Model of Spinocerebellar Ataxia 1. Int J Mol Sci 2023; 24:10689. [PMID: 37445867 DOI: 10.3390/ijms241310689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 06/19/2023] [Accepted: 06/21/2023] [Indexed: 07/15/2023] Open
Abstract
Edaravone is a mitochondrially targeted drug with a suggested capability to modify the course of diverse neurological diseases. Nevertheless, edaravone has not been tested yet in the context of spinocerebellar ataxia 1 (SCA1), an incurable neurodegenerative disease characterized mainly by cerebellar disorder, with a strong contribution of inflammation and mitochondrial dysfunction. This study aimed to address this gap, exploring the potential of edaravone to slow down SCA1 progression in a mouse knock-in SCA1 model. SCA1154Q/2Q and healthy SCA12Q/2Q mice were administered either edaravone or saline daily for more than 13 weeks. The functional impairments were assessed via a wide spectrum of behavioral assays reflecting motor and cognitive deficits and behavioral abnormalities. Moreover, we used high-resolution respirometry to explore mitochondrial function, and immunohistochemical and biochemical tools to assess the magnitude of neurodegeneration, inflammation, and neuroplasticity. Data were analyzed using (hierarchical) Bayesian regression models, combined with the methods of multivariate statistics. Our analysis pointed out various previously documented neurological and behavioral deficits of SCA1 mice. However, we did not detect any plausible therapeutic effect of edaravone on either behavioral dysfunctions or other disease hallmarks in SCA1 mice. Thus, our results did not provide support for the therapeutic potential of edaravone in SCA1.
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Affiliation(s)
- Martina Sucha
- Department of Pathological Physiology, Faculty of Medicine in Pilsen, Charles University, alej Svobody 76, 323 00 Pilsen, Czech Republic
- Laboratory of Neurodegenerative Disorders, Biomedical Center, Faculty of Medicine in Pilsen, Charles University, alej Svobody 76, 323 00 Pilsen, Czech Republic
| | - Simona Benediktova
- Department of Pathological Physiology, Faculty of Medicine in Pilsen, Charles University, alej Svobody 76, 323 00 Pilsen, Czech Republic
| | - Filip Tichanek
- Department of Pathological Physiology, Faculty of Medicine in Pilsen, Charles University, alej Svobody 76, 323 00 Pilsen, Czech Republic
- Laboratory of Neurodegenerative Disorders, Biomedical Center, Faculty of Medicine in Pilsen, Charles University, alej Svobody 76, 323 00 Pilsen, Czech Republic
| | - Jan Jedlicka
- Department of Physiology, Faculty of Medicine in Pilsen, Charles University, alej Svobody 76, 323 00 Pilsen, Czech Republic
- Mitochondrial Laboratory, Biomedical Center, Faculty of Medicine in Pilsen, Charles University, alej Svobody 76, 323 00 Pilsen, Czech Republic
| | - Stepan Kapl
- Department of Pathological Physiology, Faculty of Medicine in Pilsen, Charles University, alej Svobody 76, 323 00 Pilsen, Czech Republic
- Laboratory of Experimental Neurophysiology, Biomedical Center, Faculty of Medicine in Pilsen, Charles University, alej Svobody 76, 323 00 Pilsen, Czech Republic
| | - Dana Jelinkova
- Department of Pathological Physiology, Faculty of Medicine in Pilsen, Charles University, alej Svobody 76, 323 00 Pilsen, Czech Republic
- Laboratory of Neurodegenerative Disorders, Biomedical Center, Faculty of Medicine in Pilsen, Charles University, alej Svobody 76, 323 00 Pilsen, Czech Republic
| | - Zdenka Purkartova
- Department of Pathological Physiology, Faculty of Medicine in Pilsen, Charles University, alej Svobody 76, 323 00 Pilsen, Czech Republic
| | - Jan Tuma
- Department of Pathological Physiology, Faculty of Medicine in Pilsen, Charles University, alej Svobody 76, 323 00 Pilsen, Czech Republic
| | - Jitka Kuncova
- Department of Physiology, Faculty of Medicine in Pilsen, Charles University, alej Svobody 76, 323 00 Pilsen, Czech Republic
- Mitochondrial Laboratory, Biomedical Center, Faculty of Medicine in Pilsen, Charles University, alej Svobody 76, 323 00 Pilsen, Czech Republic
| | - Jan Cendelin
- Department of Pathological Physiology, Faculty of Medicine in Pilsen, Charles University, alej Svobody 76, 323 00 Pilsen, Czech Republic
- Laboratory of Neurodegenerative Disorders, Biomedical Center, Faculty of Medicine in Pilsen, Charles University, alej Svobody 76, 323 00 Pilsen, Czech Republic
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15
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Valdrighi N, Blom AB, van Beuningen HM, Vitters EL, Helsen MM, Walgreen B, van Lent PL, Koenders MI, van der Kraan PM, van de Loo FA, Blaney Davidson EN. Early pain in females is linked to late pathological features in murine experimental osteoarthritis. PeerJ 2023; 11:e15482. [PMID: 37366428 PMCID: PMC10290834 DOI: 10.7717/peerj.15482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Accepted: 05/09/2023] [Indexed: 06/28/2023] Open
Abstract
Background Osteoarthritis (OA) is a progressive joint disease and a major cause of chronic pain in adults. The prevalence of OA is higher in female patients, who tend to have worse OA outcomes, partially due to pain. The association between joint pain and OA pathology is often inconclusive. Preclinical research studies have largely overlooked sex as a potential determinant in joint pain during OA. This study aimed to investigate the role of sex in joint pain in the collagenase-induced OA (CiOA) model and its link with joint pathology. Methods Multiple aspects of pain were evaluated during identically executed experiments of CiOA in male and female C57BL/6J mice. Cartilage damage, osteophyte formation, synovial thickness, and cellularity were assessed by histology on day 56. The association between pain and pathology was investigated, disaggregated by sex. Results Differences in pain behavior between sexes were found in the majority of the evaluated pain methods. Females displayed lower weight bearing ability in the affected leg compared to males during the early phase of the disease, however, the pathology at the end stage was comparable between sexes. In the second cohort, males displayed increased mechanical sensitivity in the affected joint compared to females but also showed more cartilage damage at the end stage of the model. Within this cohort, gait analysis showed varied results. Males used the affected paw less often and displayed dynamic weight-bearing compensation in the early phase of the model. These differences were not observed in females. Other evaluated parameters displayed comparable gait behavior between males and females. A detailed analysis of individual mice revealed that seven out of 10 pain measurements highly correlated with OA histopathology in females (Pearson r range: 0.642-0.934), whereas in males this measurement was only two (Pearson r range: 0.645-0.748). Conclusion Our data show that sex is a determinant in the link between pain-related behavior with OA features. Therefore, to accurately interpret pain data it is crucial to segregate data analysis by sex to draw the correct mechanistic conclusion.
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Alkholifi FK, Aodah AH, Foudah AI, Alam A. Exploring the Therapeutic Potential of Berberine and Tocopherol in Managing Diabetic Neuropathy: A Comprehensive Approach towards Alleviating Chronic Neuropathic Pain. Biomedicines 2023; 11:1726. [PMID: 37371821 DOI: 10.3390/biomedicines11061726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Revised: 06/12/2023] [Accepted: 06/13/2023] [Indexed: 06/29/2023] Open
Abstract
Diabetic neuropathy (DN) causes sensory dysfunction, such as numbness, tingling, or burning sensations. Traditional medication may not ease pain and discomfort, but natural remedies such as Berberine (BR) and vitamin E or Tocopherol (TOC) have therapeutic potential to reduce inflammation while improving nerve function. Novel substances offer a more potent alternative method for managing severe chronic neuropathic pain that does not react to standard drug therapy by targeting various pathways that regulate it. Rats with diabetic control received oral doses of BR + TOC that showed significant changes in serum insulin levels compared to DN controls after 90 days, suggesting a decrease in sensitivity to painful stimuli partly by modulating the oxidative stress of the inflammatory pathway such as TNF-α suppression or stimulation of TNF-α depending on the amount of dose consumed by them. NF-kB also played its role here. Administering doses of BR and TOC reduced heightened levels of NF-kB and AGEs, effectively counteracting inflammation-targeted key factors in diabetes, promising possibilities for the benefits of these molecules revealed through in vivo investigation. In summary, treating neuropathy pain with a more comprehensive and organic approach can involve harnessing the powerful capabilities of BR and TOC. These compounds have been found to not only considerably decrease inflammation but also provide effective nerve protection while enhancing overall nerve function. With their multifunctional impacts on various neuropathic pain pathways in the body, these naturally occurring substances offer an exciting possibility for those who encounter high levels of neuropathic distress that do not respond well to conventional medication-centred therapies.
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Affiliation(s)
- Faisal K Alkholifi
- Department of Pharmacology & Toxicology, College of Pharmacy, Prince Sattam bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia
| | - Alhussain H Aodah
- Department of Pharmaceutics, College of Pharmacy, Prince Sattam bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia
| | - Ahmed I Foudah
- Department of Pharmacognosy, College of Pharmacy, Prince Sattam bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia
| | - Aftab Alam
- Department of Pharmacognosy, College of Pharmacy, Prince Sattam bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia
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Shahpasand-Kroner H, Siddique I, Malik R, Linares GR, Ivanova MI, Ichida J, Weil T, Münch J, Sanchez-Garcia E, Klärner FG, Schrader T, Bitan G. Molecular Tweezers: Supramolecular Hosts with Broad-Spectrum Biological Applications. Pharmacol Rev 2023; 75:263-308. [PMID: 36549866 PMCID: PMC9976797 DOI: 10.1124/pharmrev.122.000654] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 10/14/2022] [Accepted: 10/19/2022] [Indexed: 12/24/2022] Open
Abstract
Lysine-selective molecular tweezers (MTs) are supramolecular host molecules displaying a remarkably broad spectrum of biologic activities. MTs act as inhibitors of the self-assembly and toxicity of amyloidogenic proteins using a unique mechanism. They destroy viral membranes and inhibit infection by enveloped viruses, such as HIV-1 and SARS-CoV-2, by mechanisms unrelated to their action on protein self-assembly. They also disrupt biofilm of Gram-positive bacteria. The efficacy and safety of MTs have been demonstrated in vitro, in cell culture, and in vivo, suggesting that these versatile compounds are attractive therapeutic candidates for various diseases, infections, and injuries. A lead compound called CLR01 has been shown to inhibit the aggregation of various amyloidogenic proteins, facilitate their clearance in vivo, prevent infection by multiple viruses, display potent anti-biofilm activity, and have a high safety margin in animal models. The inhibitory effect of CLR01 against amyloidogenic proteins is highly specific to abnormal self-assembly of amyloidogenic proteins with no disruption of normal mammalian biologic processes at the doses needed for inhibition. Therapeutic effects of CLR01 have been demonstrated in animal models of proteinopathies, lysosomal-storage diseases, and spinal-cord injury. Here we review the activity and mechanisms of action of these intriguing compounds and discuss future research directions. SIGNIFICANCE STATEMENT: Molecular tweezers are supramolecular host molecules with broad biological applications, including inhibition of abnormal protein aggregation, facilitation of lysosomal clearance of toxic aggregates, disruption of viral membranes, and interference of biofilm formation by Gram-positive bacteria. This review discusses the molecular and cellular mechanisms of action of the molecular tweezers, including the discovery of distinct mechanisms acting in vitro and in vivo, and the application of these compounds in multiple preclinical disease models.
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Affiliation(s)
- Hedieh Shahpasand-Kroner
- Department of Neurology, David Geffen School of Medicine (H.S.-K., I.S., R.M., G.B.), Brain Research Institute (G.B.), and Molecular Biology Institute (G.B.), University of California, Los Angeles, California; Department of Stem Cell Biology & Regenerative Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California (G.R.L., J.I.); Department of Neurology, University of Michigan, Ann Arbor, Michigan (M.I.I.); Institute of Molecular Virology, Ulm University Medical Center, Ulm, Germany (T.W., J.M.); and Department of Computational Biochemistry (E.S.-G.) and Faculty of Chemistry (F-G.K., T.S.), University of Duisburg-Essen, Essen, Germany
| | - Ibrar Siddique
- Department of Neurology, David Geffen School of Medicine (H.S.-K., I.S., R.M., G.B.), Brain Research Institute (G.B.), and Molecular Biology Institute (G.B.), University of California, Los Angeles, California; Department of Stem Cell Biology & Regenerative Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California (G.R.L., J.I.); Department of Neurology, University of Michigan, Ann Arbor, Michigan (M.I.I.); Institute of Molecular Virology, Ulm University Medical Center, Ulm, Germany (T.W., J.M.); and Department of Computational Biochemistry (E.S.-G.) and Faculty of Chemistry (F-G.K., T.S.), University of Duisburg-Essen, Essen, Germany
| | - Ravinder Malik
- Department of Neurology, David Geffen School of Medicine (H.S.-K., I.S., R.M., G.B.), Brain Research Institute (G.B.), and Molecular Biology Institute (G.B.), University of California, Los Angeles, California; Department of Stem Cell Biology & Regenerative Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California (G.R.L., J.I.); Department of Neurology, University of Michigan, Ann Arbor, Michigan (M.I.I.); Institute of Molecular Virology, Ulm University Medical Center, Ulm, Germany (T.W., J.M.); and Department of Computational Biochemistry (E.S.-G.) and Faculty of Chemistry (F-G.K., T.S.), University of Duisburg-Essen, Essen, Germany
| | - Gabriel R Linares
- Department of Neurology, David Geffen School of Medicine (H.S.-K., I.S., R.M., G.B.), Brain Research Institute (G.B.), and Molecular Biology Institute (G.B.), University of California, Los Angeles, California; Department of Stem Cell Biology & Regenerative Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California (G.R.L., J.I.); Department of Neurology, University of Michigan, Ann Arbor, Michigan (M.I.I.); Institute of Molecular Virology, Ulm University Medical Center, Ulm, Germany (T.W., J.M.); and Department of Computational Biochemistry (E.S.-G.) and Faculty of Chemistry (F-G.K., T.S.), University of Duisburg-Essen, Essen, Germany
| | - Magdalena I Ivanova
- Department of Neurology, David Geffen School of Medicine (H.S.-K., I.S., R.M., G.B.), Brain Research Institute (G.B.), and Molecular Biology Institute (G.B.), University of California, Los Angeles, California; Department of Stem Cell Biology & Regenerative Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California (G.R.L., J.I.); Department of Neurology, University of Michigan, Ann Arbor, Michigan (M.I.I.); Institute of Molecular Virology, Ulm University Medical Center, Ulm, Germany (T.W., J.M.); and Department of Computational Biochemistry (E.S.-G.) and Faculty of Chemistry (F-G.K., T.S.), University of Duisburg-Essen, Essen, Germany
| | - Justin Ichida
- Department of Neurology, David Geffen School of Medicine (H.S.-K., I.S., R.M., G.B.), Brain Research Institute (G.B.), and Molecular Biology Institute (G.B.), University of California, Los Angeles, California; Department of Stem Cell Biology & Regenerative Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California (G.R.L., J.I.); Department of Neurology, University of Michigan, Ann Arbor, Michigan (M.I.I.); Institute of Molecular Virology, Ulm University Medical Center, Ulm, Germany (T.W., J.M.); and Department of Computational Biochemistry (E.S.-G.) and Faculty of Chemistry (F-G.K., T.S.), University of Duisburg-Essen, Essen, Germany
| | - Tatjana Weil
- Department of Neurology, David Geffen School of Medicine (H.S.-K., I.S., R.M., G.B.), Brain Research Institute (G.B.), and Molecular Biology Institute (G.B.), University of California, Los Angeles, California; Department of Stem Cell Biology & Regenerative Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California (G.R.L., J.I.); Department of Neurology, University of Michigan, Ann Arbor, Michigan (M.I.I.); Institute of Molecular Virology, Ulm University Medical Center, Ulm, Germany (T.W., J.M.); and Department of Computational Biochemistry (E.S.-G.) and Faculty of Chemistry (F-G.K., T.S.), University of Duisburg-Essen, Essen, Germany
| | - Jan Münch
- Department of Neurology, David Geffen School of Medicine (H.S.-K., I.S., R.M., G.B.), Brain Research Institute (G.B.), and Molecular Biology Institute (G.B.), University of California, Los Angeles, California; Department of Stem Cell Biology & Regenerative Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California (G.R.L., J.I.); Department of Neurology, University of Michigan, Ann Arbor, Michigan (M.I.I.); Institute of Molecular Virology, Ulm University Medical Center, Ulm, Germany (T.W., J.M.); and Department of Computational Biochemistry (E.S.-G.) and Faculty of Chemistry (F-G.K., T.S.), University of Duisburg-Essen, Essen, Germany
| | - Elsa Sanchez-Garcia
- Department of Neurology, David Geffen School of Medicine (H.S.-K., I.S., R.M., G.B.), Brain Research Institute (G.B.), and Molecular Biology Institute (G.B.), University of California, Los Angeles, California; Department of Stem Cell Biology & Regenerative Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California (G.R.L., J.I.); Department of Neurology, University of Michigan, Ann Arbor, Michigan (M.I.I.); Institute of Molecular Virology, Ulm University Medical Center, Ulm, Germany (T.W., J.M.); and Department of Computational Biochemistry (E.S.-G.) and Faculty of Chemistry (F-G.K., T.S.), University of Duisburg-Essen, Essen, Germany
| | - Frank-Gerrit Klärner
- Department of Neurology, David Geffen School of Medicine (H.S.-K., I.S., R.M., G.B.), Brain Research Institute (G.B.), and Molecular Biology Institute (G.B.), University of California, Los Angeles, California; Department of Stem Cell Biology & Regenerative Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California (G.R.L., J.I.); Department of Neurology, University of Michigan, Ann Arbor, Michigan (M.I.I.); Institute of Molecular Virology, Ulm University Medical Center, Ulm, Germany (T.W., J.M.); and Department of Computational Biochemistry (E.S.-G.) and Faculty of Chemistry (F-G.K., T.S.), University of Duisburg-Essen, Essen, Germany
| | - Thomas Schrader
- Department of Neurology, David Geffen School of Medicine (H.S.-K., I.S., R.M., G.B.), Brain Research Institute (G.B.), and Molecular Biology Institute (G.B.), University of California, Los Angeles, California; Department of Stem Cell Biology & Regenerative Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California (G.R.L., J.I.); Department of Neurology, University of Michigan, Ann Arbor, Michigan (M.I.I.); Institute of Molecular Virology, Ulm University Medical Center, Ulm, Germany (T.W., J.M.); and Department of Computational Biochemistry (E.S.-G.) and Faculty of Chemistry (F-G.K., T.S.), University of Duisburg-Essen, Essen, Germany
| | - Gal Bitan
- Department of Neurology, David Geffen School of Medicine (H.S.-K., I.S., R.M., G.B.), Brain Research Institute (G.B.), and Molecular Biology Institute (G.B.), University of California, Los Angeles, California; Department of Stem Cell Biology & Regenerative Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California (G.R.L., J.I.); Department of Neurology, University of Michigan, Ann Arbor, Michigan (M.I.I.); Institute of Molecular Virology, Ulm University Medical Center, Ulm, Germany (T.W., J.M.); and Department of Computational Biochemistry (E.S.-G.) and Faculty of Chemistry (F-G.K., T.S.), University of Duisburg-Essen, Essen, Germany
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18
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Hu X, Du L, Liu S, Lan Z, Zang K, Feng J, Zhao Y, Yang X, Xie Z, Wang PL, Ver Heul AM, Chen L, Samineni VK, Wang YQ, Lavine KJ, Gereau RW, Wu GF, Hu H. A TRPV4-dependent neuroimmune axis in the spinal cord promotes neuropathic pain. J Clin Invest 2023; 133:e161507. [PMID: 36701202 PMCID: PMC9974096 DOI: 10.1172/jci161507] [Citation(s) in RCA: 29] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 01/12/2023] [Indexed: 01/27/2023] Open
Abstract
Microglia, resident macrophages of the CNS, are essential to brain development, homeostasis, and disease. Microglial activation and proliferation are hallmarks of many CNS diseases, including neuropathic pain. However, molecular mechanisms that govern the spinal neuroimmune axis in the setting of neuropathic pain remain incompletely understood. Here, we show that genetic ablation or pharmacological blockade of transient receptor potential vanilloid type 4 (TRPV4) markedly attenuated neuropathic pain-like behaviors in a mouse model of spared nerve injury. Mechanistically, microglia-expressed TRPV4 mediated microglial activation and proliferation and promoted functional and structural plasticity of excitatory spinal neurons through release of lipocalin-2. Our results suggest that microglial TRPV4 channels reside at the center of the neuroimmune axis in the spinal cord, which transforms peripheral nerve injury into central sensitization and neuropathic pain, thereby identifying TRPV4 as a potential new target for the treatment of chronic pain.
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Affiliation(s)
- Xueming Hu
- Department of Anesthesiology, Center for the Study of Itch and Sensory Disorders, and Washington University Pain Center and
| | - Lixia Du
- Department of Anesthesiology, Center for the Study of Itch and Sensory Disorders, and Washington University Pain Center and
| | - Shenbin Liu
- Department of Anesthesiology, Center for the Study of Itch and Sensory Disorders, and Washington University Pain Center and
| | - Zhou Lan
- Department of Anesthesiology, Center for the Study of Itch and Sensory Disorders, and Washington University Pain Center and
| | - Kaikai Zang
- Department of Anesthesiology, Center for the Study of Itch and Sensory Disorders, and Washington University Pain Center and
| | - Jing Feng
- Department of Anesthesiology, Center for the Study of Itch and Sensory Disorders, and Washington University Pain Center and
| | - Yonghui Zhao
- Department of Anesthesiology, Center for the Study of Itch and Sensory Disorders, and Washington University Pain Center and
| | - Xingliang Yang
- Department of Anesthesiology, Center for the Study of Itch and Sensory Disorders, and Washington University Pain Center and
| | - Zili Xie
- Department of Anesthesiology, Center for the Study of Itch and Sensory Disorders, and Washington University Pain Center and
| | - Peter L. Wang
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Aaron M. Ver Heul
- Department of Anesthesiology, Center for the Study of Itch and Sensory Disorders, and Washington University Pain Center and
| | - Lvyi Chen
- Department of Anesthesiology, Center for the Study of Itch and Sensory Disorders, and Washington University Pain Center and
| | - Vijay K. Samineni
- Department of Anesthesiology, Center for the Study of Itch and Sensory Disorders, and Washington University Pain Center and
| | - Yan-Qing Wang
- Institute of Acupuncture and Moxibustion and Institute of Integrative Medicine; Department of Integrative Medicine and Neurobiology, School of Basic Medical Science; and State Key Laboratory of Medical Neurobiology, Institutes of Brain Science, Fudan University, Shanghai, China
| | - Kory J. Lavine
- Department of Internal Medicine, Cardiovascular Division and
| | - Robert W. Gereau
- Department of Anesthesiology, Center for the Study of Itch and Sensory Disorders, and Washington University Pain Center and
| | - Gregory F. Wu
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri, USA
- Department of Neurology, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Hongzhen Hu
- Department of Anesthesiology, Center for the Study of Itch and Sensory Disorders, and Washington University Pain Center and
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19
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Sang S, Mao X, Cao Y, Liu Z, Shen Z, Li M, Jia W, Guo Z, Wang Z, Xiang C, Sun L. 3D Bioprinting Using Synovium-Derived MSC-Laden Photo-Cross-Linked ECM Bioink for Cartilage Regeneration. ACS APPLIED MATERIALS & INTERFACES 2023; 15:8895-8913. [PMID: 36779653 DOI: 10.1021/acsami.2c19058] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
In this study, inspired by the components of cartilage matrix, a photo-cross-linked extracellular matrix (ECM) bioink composed of modified proteins and polysaccharides was presented, including gelatin methacrylate, hyaluronic acid methacrylate, and chondroitin sulfate methacrylate. The systematic experiments were performed, including morphology, swelling, degradation, mechanical and rheological tests, printability analysis, biocompatibility and chondrogenic differentiation characterization, and RNA sequencing (RNA-seq). The results indicated that the photo-cross-linked ECM hydrogels possessed suitable degradation rate and excellent mechanical properties, and the three-dimensional (3D) bioprinted ECM scaffolds obtained favorable shape fidelity and improved the basic properties, biological properties, and chondrogenesis of synovium-derived MSCs (SMSCs). The strong stimulation of transforming growth factor-beta 1 (TGF-β1) enhanced the aggregation, proliferation, and differentiation of SMSCs, thereby enhancing chondrogenic ECM deposition. In vivo animal experiments and gait analysis further confirmed that the ECM scaffold combined with TGF-β1 could effectively promote cartilage regeneration and functional recovery of injured joints. To sum up, the photo-cross-linked ECM bioink for 3D printing of functional cartilage tissue may become an attractive strategy for cartilage regeneration.
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Affiliation(s)
- Shengbo Sang
- Shanxi Key Laboratory of Micro Nano Sensors & Artificial Intelligence Perception, College of Information and Computer, Taiyuan University of Technology, Taiyuan 030024, China
- Key Lab of Advanced Transducers and Intelligent Control System of the Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China
| | - Xingjia Mao
- Department of Basic Medicine Sciences, and Department of Orthopaedics of Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Yanyan Cao
- College of Information Science and Engineering, Hebei North University, Zhangjiakou 075000, China
| | - Zixian Liu
- Shanxi Key Laboratory of Micro Nano Sensors & Artificial Intelligence Perception, College of Information and Computer, Taiyuan University of Technology, Taiyuan 030024, China
- Key Lab of Advanced Transducers and Intelligent Control System of the Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China
| | - Zhizhong Shen
- Shanxi Key Laboratory of Micro Nano Sensors & Artificial Intelligence Perception, College of Information and Computer, Taiyuan University of Technology, Taiyuan 030024, China
- Shanxi Research Institute of 6D Artificial Intelligence Biomedical Science, Taiyuan 030031, China
| | - Meng Li
- Shanxi Key Laboratory of Micro Nano Sensors & Artificial Intelligence Perception, College of Information and Computer, Taiyuan University of Technology, Taiyuan 030024, China
- Shanxi Research Institute of 6D Artificial Intelligence Biomedical Science, Taiyuan 030031, China
| | - Wendan Jia
- Shanxi Key Laboratory of Micro Nano Sensors & Artificial Intelligence Perception, College of Information and Computer, Taiyuan University of Technology, Taiyuan 030024, China
- Shanxi Research Institute of 6D Artificial Intelligence Biomedical Science, Taiyuan 030031, China
| | - Zijian Guo
- Department of Orthopedics, Shanxi Key Laboratory of Bone and Soft Tissue Injury Repair, The Second Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - Zehua Wang
- Department of Orthopedics, Shanxi Key Laboratory of Bone and Soft Tissue Injury Repair, The Second Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - Chuan Xiang
- Department of Orthopedics, Shanxi Key Laboratory of Bone and Soft Tissue Injury Repair, The Second Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - Lei Sun
- Shanxi Key Laboratory of Micro Nano Sensors & Artificial Intelligence Perception, College of Information and Computer, Taiyuan University of Technology, Taiyuan 030024, China
- Key Lab of Advanced Transducers and Intelligent Control System of the Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China
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20
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Fil D, Conley RL, Zuberi AR, Lutz CM, Gemelli T, Napierala M, Napierala JS. Neurobehavioral deficits of mice expressing a low level of G127V mutant frataxin. Neurobiol Dis 2023; 177:105996. [PMID: 36638893 PMCID: PMC9901512 DOI: 10.1016/j.nbd.2023.105996] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 12/20/2022] [Accepted: 01/06/2023] [Indexed: 01/11/2023] Open
Abstract
Friedreich's ataxia (FRDA) is a neurodegenerative disease caused by reduced expression of the mitochondrial protein frataxin (FXN). Most FRDA patients are homozygous for large expansions of GAA repeats in intron 1 of FXN, while some are compound heterozygotes with an expanded GAA tract in one allele and a missense or nonsense mutation in the other. A missense mutation, changing a glycine to valine at position 130 (G130V), is prevalent among the clinical variants. We and others have demonstrated that levels of mature FXN protein in FRDA G130V samples are reduced below those detected in samples harboring homozygous repeat expansions. Little is known regarding expression and function of endogenous FXN-G130V protein due to lack of reagents and models that can distinguish the mutant FXN protein from the wild-type FXN produced from the GAA-expanded allele. We aimed to determine the effect of the G130V (murine G127V) mutation on Fxn expression and to define its multi-system impact in vivo. We used CRISPR/Cas9 to introduce the G127V missense mutation in the Fxn coding sequence and generated homozygous mice (FxnG127V/G127V). We also introduced the G127V mutation into a GAA repeat expansion FRDA mouse model (FxnGAA230/KO; KIKO) to generate a compound heterozygous strain (FxnG127V/GAA230). We performed neurobehavioral tests on cohorts of WT and Fxn mutant animals at three-month intervals for one year, and collected tissue samples to analyze molecular changes during that time. The endogenous Fxn G127V protein is detected at much lower levels in all tissues analyzed from FxnG127V/G127V mice compared to age and sex-matched WT mice without differences in Fxn transcript levels. FxnG127V/G127V mice are significantly smaller than WT counterparts, but perform similarly in most neurobehavioral tasks. RNA sequencing analysis revealed reduced expression of genes in oxidative phosphorylation and protein synthesis, underscoring the metabolic consequences in our mouse model expressing extremely low levels of Fxn. Results of these studies provide insight into the unique pathogenic mechanism of the FXN G130V mechanism and the tolerable limit of Fxn/FXN expression in vivo.
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Affiliation(s)
- Daniel Fil
- Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Robbie L Conley
- Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Aamir R Zuberi
- Technology Evaluation and Development, JAX Center for Precision Genetics, Rare Disease Translational Center, The Jackson Laboratory, Bar Harbor, ME 04609, USA
| | - Cathleen M Lutz
- The Rare and Orphan Disease Center, JAX Center for Precision Genetics, Rare Disease Translational Center, The Jackson Laboratory, Bar Harbor, ME 04609, USA
| | - Terry Gemelli
- Department of Neurology, Peter O'Donnell Jr. Brain Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Marek Napierala
- Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Jill S Napierala
- Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
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21
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Jensen NO, Burris B, Zhou L, Yamada H, Reyes C, Mokalled MH. Functional Trajectories during innate spinal cord repair. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.01.31.526502. [PMID: 36778427 PMCID: PMC9915574 DOI: 10.1101/2023.01.31.526502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Adult zebrafish are capable of anatomical and functional recovery following severe spinal cord injury. Axon growth, glial bridging and adult neurogenesis are hallmarks of cellular regeneration during spinal cord repair. However, the correlation between these cellular regenerative processes and functional recovery remains to be elucidated. Whereas the majority of established functional regeneration metrics measure swim capacity, we hypothesize that gait quality is more directly related to neurological health. Here, we performed a longitudinal swim tracking study for sixty individual zebrafish spanning eight weeks of spinal cord regeneration. Multiple swim parameters as well as axonal and glial bridging were integrated. We established rostral compensation as a new gait quality metric that highly correlates with functional recovery. Tensor component analysis of longitudinal data supports a correspondence between functional recovery trajectories and neurological outcomes. Moreover, our studies predicted and validated that a subset of functional regeneration parameters measured 1 to 2 weeks post-injury is sufficient to predict the regenerative outcomes of individual animals at 8 weeks post-injury. Our findings established new functional regeneration parameters and generated a comprehensive correlative database between various functional and cellular regeneration outputs.
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22
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Zhang Z, Roberson DP, Kotoda M, Boivin B, Bohnslav JP, González-Cano R, Yarmolinsky DA, Turnes BL, Wimalasena NK, Neufeld SQ, Barrett LB, Quintão NLM, Fattori V, Taub DG, Wiltschko AB, Andrews NA, Harvey CD, Datta SR, Woolf CJ. Automated preclinical detection of mechanical pain hypersensitivity and analgesia. Pain 2022; 163:2326-2336. [PMID: 35543646 PMCID: PMC9649838 DOI: 10.1097/j.pain.0000000000002680] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 04/01/2022] [Accepted: 04/14/2022] [Indexed: 11/26/2022]
Abstract
ABSTRACT The lack of sensitive and robust behavioral assessments of pain in preclinical models has been a major limitation for both pain research and the development of novel analgesics. Here, we demonstrate a novel data acquisition and analysis platform that provides automated, quantitative, and objective measures of naturalistic rodent behavior in an observer-independent and unbiased fashion. The technology records freely behaving mice, in the dark, over extended periods for continuous acquisition of 2 parallel video data streams: (1) near-infrared frustrated total internal reflection for detecting the degree, force, and timing of surface contact and (2) simultaneous ongoing video graphing of whole-body pose. Using machine vision and machine learning, we automatically extract and quantify behavioral features from these data to reveal moment-by-moment changes that capture the internal pain state of rodents in multiple pain models. We show that these voluntary pain-related behaviors are reversible by analgesics and that analgesia can be automatically and objectively differentiated from sedation. Finally, we used this approach to generate a paw luminance ratio measure that is sensitive in capturing dynamic mechanical hypersensitivity over a period and scalable for high-throughput preclinical analgesic efficacy assessment.
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Affiliation(s)
- Zihe Zhang
- Boston Children's Hospital, F.M. Kirby Neurobiology Center, Boston, MA, United States. D.P. Roberson is now with Blackbox Bio, LLC, Dallas, TX, United States. R. González-Cano is now with the Department of Pharmacology, University of Granada, Granada, Spain. N.K. Wimalasena is now with Decibel Therapeutics, Boston, MA, United States. N.L.M. Quintão is now with the Postgraduate Programe in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil. V. Fattori is now with the Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Paraná, Brazil. A.B. Wiltschko is now with the Google Research, Brain Team, Cambridge, MA, United States. N.A. Andrews is now with the Salk Institute for Biological Studies, La Jolla, CA, United States
- Department of Neurobiology, Harvard Medical School, Boston, MA, United States
| | - David P. Roberson
- Boston Children's Hospital, F.M. Kirby Neurobiology Center, Boston, MA, United States. D.P. Roberson is now with Blackbox Bio, LLC, Dallas, TX, United States. R. González-Cano is now with the Department of Pharmacology, University of Granada, Granada, Spain. N.K. Wimalasena is now with Decibel Therapeutics, Boston, MA, United States. N.L.M. Quintão is now with the Postgraduate Programe in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil. V. Fattori is now with the Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Paraná, Brazil. A.B. Wiltschko is now with the Google Research, Brain Team, Cambridge, MA, United States. N.A. Andrews is now with the Salk Institute for Biological Studies, La Jolla, CA, United States
- Department of Neurobiology, Harvard Medical School, Boston, MA, United States
| | - Masakazu Kotoda
- Boston Children's Hospital, F.M. Kirby Neurobiology Center, Boston, MA, United States. D.P. Roberson is now with Blackbox Bio, LLC, Dallas, TX, United States. R. González-Cano is now with the Department of Pharmacology, University of Granada, Granada, Spain. N.K. Wimalasena is now with Decibel Therapeutics, Boston, MA, United States. N.L.M. Quintão is now with the Postgraduate Programe in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil. V. Fattori is now with the Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Paraná, Brazil. A.B. Wiltschko is now with the Google Research, Brain Team, Cambridge, MA, United States. N.A. Andrews is now with the Salk Institute for Biological Studies, La Jolla, CA, United States
- Department of Neurobiology, Harvard Medical School, Boston, MA, United States
| | - Bruno Boivin
- Boston Children's Hospital, F.M. Kirby Neurobiology Center, Boston, MA, United States. D.P. Roberson is now with Blackbox Bio, LLC, Dallas, TX, United States. R. González-Cano is now with the Department of Pharmacology, University of Granada, Granada, Spain. N.K. Wimalasena is now with Decibel Therapeutics, Boston, MA, United States. N.L.M. Quintão is now with the Postgraduate Programe in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil. V. Fattori is now with the Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Paraná, Brazil. A.B. Wiltschko is now with the Google Research, Brain Team, Cambridge, MA, United States. N.A. Andrews is now with the Salk Institute for Biological Studies, La Jolla, CA, United States
- Department of Neurobiology, Harvard Medical School, Boston, MA, United States
| | - James P. Bohnslav
- Department of Neurobiology, Harvard Medical School, Boston, MA, United States
| | - Rafael González-Cano
- Boston Children's Hospital, F.M. Kirby Neurobiology Center, Boston, MA, United States. D.P. Roberson is now with Blackbox Bio, LLC, Dallas, TX, United States. R. González-Cano is now with the Department of Pharmacology, University of Granada, Granada, Spain. N.K. Wimalasena is now with Decibel Therapeutics, Boston, MA, United States. N.L.M. Quintão is now with the Postgraduate Programe in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil. V. Fattori is now with the Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Paraná, Brazil. A.B. Wiltschko is now with the Google Research, Brain Team, Cambridge, MA, United States. N.A. Andrews is now with the Salk Institute for Biological Studies, La Jolla, CA, United States
- Department of Neurobiology, Harvard Medical School, Boston, MA, United States
| | - David A. Yarmolinsky
- Boston Children's Hospital, F.M. Kirby Neurobiology Center, Boston, MA, United States. D.P. Roberson is now with Blackbox Bio, LLC, Dallas, TX, United States. R. González-Cano is now with the Department of Pharmacology, University of Granada, Granada, Spain. N.K. Wimalasena is now with Decibel Therapeutics, Boston, MA, United States. N.L.M. Quintão is now with the Postgraduate Programe in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil. V. Fattori is now with the Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Paraná, Brazil. A.B. Wiltschko is now with the Google Research, Brain Team, Cambridge, MA, United States. N.A. Andrews is now with the Salk Institute for Biological Studies, La Jolla, CA, United States
- Department of Neurobiology, Harvard Medical School, Boston, MA, United States
| | - Bruna Lenfers Turnes
- Boston Children's Hospital, F.M. Kirby Neurobiology Center, Boston, MA, United States. D.P. Roberson is now with Blackbox Bio, LLC, Dallas, TX, United States. R. González-Cano is now with the Department of Pharmacology, University of Granada, Granada, Spain. N.K. Wimalasena is now with Decibel Therapeutics, Boston, MA, United States. N.L.M. Quintão is now with the Postgraduate Programe in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil. V. Fattori is now with the Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Paraná, Brazil. A.B. Wiltschko is now with the Google Research, Brain Team, Cambridge, MA, United States. N.A. Andrews is now with the Salk Institute for Biological Studies, La Jolla, CA, United States
- Department of Neurobiology, Harvard Medical School, Boston, MA, United States
| | - Nivanthika K. Wimalasena
- Boston Children's Hospital, F.M. Kirby Neurobiology Center, Boston, MA, United States. D.P. Roberson is now with Blackbox Bio, LLC, Dallas, TX, United States. R. González-Cano is now with the Department of Pharmacology, University of Granada, Granada, Spain. N.K. Wimalasena is now with Decibel Therapeutics, Boston, MA, United States. N.L.M. Quintão is now with the Postgraduate Programe in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil. V. Fattori is now with the Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Paraná, Brazil. A.B. Wiltschko is now with the Google Research, Brain Team, Cambridge, MA, United States. N.A. Andrews is now with the Salk Institute for Biological Studies, La Jolla, CA, United States
- Department of Neurobiology, Harvard Medical School, Boston, MA, United States
| | - Shay Q. Neufeld
- Department of Neurobiology, Harvard Medical School, Boston, MA, United States
| | - Lee B. Barrett
- Boston Children's Hospital, F.M. Kirby Neurobiology Center, Boston, MA, United States. D.P. Roberson is now with Blackbox Bio, LLC, Dallas, TX, United States. R. González-Cano is now with the Department of Pharmacology, University of Granada, Granada, Spain. N.K. Wimalasena is now with Decibel Therapeutics, Boston, MA, United States. N.L.M. Quintão is now with the Postgraduate Programe in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil. V. Fattori is now with the Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Paraná, Brazil. A.B. Wiltschko is now with the Google Research, Brain Team, Cambridge, MA, United States. N.A. Andrews is now with the Salk Institute for Biological Studies, La Jolla, CA, United States
- Department of Neurobiology, Harvard Medical School, Boston, MA, United States
| | - Nara L. M. Quintão
- Boston Children's Hospital, F.M. Kirby Neurobiology Center, Boston, MA, United States. D.P. Roberson is now with Blackbox Bio, LLC, Dallas, TX, United States. R. González-Cano is now with the Department of Pharmacology, University of Granada, Granada, Spain. N.K. Wimalasena is now with Decibel Therapeutics, Boston, MA, United States. N.L.M. Quintão is now with the Postgraduate Programe in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil. V. Fattori is now with the Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Paraná, Brazil. A.B. Wiltschko is now with the Google Research, Brain Team, Cambridge, MA, United States. N.A. Andrews is now with the Salk Institute for Biological Studies, La Jolla, CA, United States
- Department of Neurobiology, Harvard Medical School, Boston, MA, United States
| | - Victor Fattori
- Boston Children's Hospital, F.M. Kirby Neurobiology Center, Boston, MA, United States. D.P. Roberson is now with Blackbox Bio, LLC, Dallas, TX, United States. R. González-Cano is now with the Department of Pharmacology, University of Granada, Granada, Spain. N.K. Wimalasena is now with Decibel Therapeutics, Boston, MA, United States. N.L.M. Quintão is now with the Postgraduate Programe in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil. V. Fattori is now with the Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Paraná, Brazil. A.B. Wiltschko is now with the Google Research, Brain Team, Cambridge, MA, United States. N.A. Andrews is now with the Salk Institute for Biological Studies, La Jolla, CA, United States
- Department of Neurobiology, Harvard Medical School, Boston, MA, United States
| | - Daniel G. Taub
- Boston Children's Hospital, F.M. Kirby Neurobiology Center, Boston, MA, United States. D.P. Roberson is now with Blackbox Bio, LLC, Dallas, TX, United States. R. González-Cano is now with the Department of Pharmacology, University of Granada, Granada, Spain. N.K. Wimalasena is now with Decibel Therapeutics, Boston, MA, United States. N.L.M. Quintão is now with the Postgraduate Programe in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil. V. Fattori is now with the Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Paraná, Brazil. A.B. Wiltschko is now with the Google Research, Brain Team, Cambridge, MA, United States. N.A. Andrews is now with the Salk Institute for Biological Studies, La Jolla, CA, United States
- Department of Neurobiology, Harvard Medical School, Boston, MA, United States
| | | | - Nick A. Andrews
- Boston Children's Hospital, F.M. Kirby Neurobiology Center, Boston, MA, United States. D.P. Roberson is now with Blackbox Bio, LLC, Dallas, TX, United States. R. González-Cano is now with the Department of Pharmacology, University of Granada, Granada, Spain. N.K. Wimalasena is now with Decibel Therapeutics, Boston, MA, United States. N.L.M. Quintão is now with the Postgraduate Programe in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil. V. Fattori is now with the Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Paraná, Brazil. A.B. Wiltschko is now with the Google Research, Brain Team, Cambridge, MA, United States. N.A. Andrews is now with the Salk Institute for Biological Studies, La Jolla, CA, United States
- Department of Neurobiology, Harvard Medical School, Boston, MA, United States
| | | | | | - Clifford J. Woolf
- Boston Children's Hospital, F.M. Kirby Neurobiology Center, Boston, MA, United States. D.P. Roberson is now with Blackbox Bio, LLC, Dallas, TX, United States. R. González-Cano is now with the Department of Pharmacology, University of Granada, Granada, Spain. N.K. Wimalasena is now with Decibel Therapeutics, Boston, MA, United States. N.L.M. Quintão is now with the Postgraduate Programe in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil. V. Fattori is now with the Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Paraná, Brazil. A.B. Wiltschko is now with the Google Research, Brain Team, Cambridge, MA, United States. N.A. Andrews is now with the Salk Institute for Biological Studies, La Jolla, CA, United States
- Department of Neurobiology, Harvard Medical School, Boston, MA, United States
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Allgood JE, Roballo KCS, Sparks BB, Bushman JS. The effects of graft source and orientation on outcomes after ablation of a branched peripheral nerve. Front Cell Neurosci 2022; 16:1055490. [DOI: 10.3389/fncel.2022.1055490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 10/28/2022] [Indexed: 11/15/2022] Open
Abstract
Segmental peripheral nerve injuries (PNI) are the most common cause of enduring nervous system dysfunction. The peripheral nervous system (PNS) has an extensive and highly branching organization. While much is known about the factors that affect regeneration through sharp bisections and linear ablations of peripheral nerves, very little has been investigated or documented about PNIs that ablate branch points. Such injuries present additional complexity compared to linear segmental defects. This study compared outcomes following ablation of a branch point with branched grafts, specifically examining how graft source and orientation of the branched graft contributed to regeneration. The model system was Lewis rats that underwent a 2.5 cm ablation that started in the sciatic nerve trunk and included the peroneal/tibial branch point. Rats received grafts that were rat sciatic autograft, inbred sciatic allograft, and inbred femoral allograft, each of which was a branched graft of 2.5 cm. Allografts were obtained from Lewis rats, which is an inbred strain. Both branches of the sciatic grafts were mixed motor and sensory while the femoral grafts were smaller in diameter than sciatic grafts and one branch of the femoral graft is sensory and the other motor. All branched grafts were sutured into the defect in two orientations dictated by which branch in the graft was sutured to the tibial vs peroneal stumps in recipients. Outcome measures include compound muscle action potentials (CMAPs) and CatWalk gait analysis throughout the recovery period, with toluidine blue for intrinsic nerve morphometry and retrograde labeling conducted at the 36-week experimental end point. Results indicate that graft source and orientation does play a significant role earlier in the regenerative process but by 36 weeks all groups showed very similar indications of regeneration across multiple outcomes.
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Cui Z, Guo Z, Wei L, Zou X, Zhu Z, Liu Y, Wang J, Chen L, Wang D, Ke Z. Altered pain sensitivity in 5×familial Alzheimer disease mice is associated with dendritic spine loss in anterior cingulate cortex pyramidal neurons. Pain 2022; 163:2138-2153. [PMID: 35384934 PMCID: PMC9578529 DOI: 10.1097/j.pain.0000000000002648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 03/25/2022] [Accepted: 03/28/2022] [Indexed: 11/26/2022]
Abstract
ABSTRACT Chronic pain is highly prevalent. Individuals with cognitive disorders such as Alzheimer disease are a susceptible population in which pain is frequently difficult to diagnosis. It is still unclear whether the pathological changes in patients with Alzheimer disease will affect pain processing. Here, we leverage animal behavior, neural activity recording, optogenetics, chemogenetics, and Alzheimer disease modeling to examine the contribution of the anterior cingulate cortex (ACC) neurons to pain response. The 5× familial Alzheimer disease mice show alleviated mechanical allodynia which can be regained by the genetic activation of ACC excitatory neurons. Furthermore, the lower peak neuronal excitation, delayed response initiation, as well as the dendritic spine reduction of ACC pyramidal neurons in 5×familial Alzheimer disease mice can be mimicked by Rac1 or actin polymerization inhibitor in wild-type (WT) mice. These findings indicate that abnormal of pain sensitivity in Alzheimer disease modeling mice is closely related to the variation of neuronal activity and dendritic spine loss in ACC pyramidal neurons, suggesting the crucial role of dendritic spine density in pain processing.
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Affiliation(s)
- Zhengyu Cui
- Academy of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Department of Internal Medicine of Traditional Chinese Medicine, Shanghai East Hospital, Tongji University, Shanghai, China
| | - Zhongzhao Guo
- Academy of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Luyao Wei
- Academy of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xiang Zou
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Zilu Zhu
- Department of Physiology, School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yuchen Liu
- Department of Physiology, School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jie Wang
- Academy of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Liang Chen
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Deheng Wang
- Department of Physiology, School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Zunji Ke
- Academy of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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25
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da Costa RHS, Martins AOBPB, Pessoa RT, Alshehri SA, Wahab S, Ahmad MF, Suliman M, da Silva LYS, Alcântara IS, Ramos AGB, de Oliveira MRC, Batista FLA, Delmondes GDA, de Farias PAM, Rocha JE, Coutinho HDM, Raposo A, Carrascosa C, Jaber JR, de Menezes IRA. Mechanisms of Actions Involved in The Antinociceptive Effect of Estragole and its β-Cyclodextrin Inclusion Complex in Animal Models. PLANTS (BASEL, SWITZERLAND) 2022; 11:2854. [PMID: 36365307 PMCID: PMC9654024 DOI: 10.3390/plants11212854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 10/04/2022] [Accepted: 10/18/2022] [Indexed: 06/16/2023]
Abstract
(1) Background: estragole is a monoterpene found in the essential oils of several aromatic plants, which can be used for several pharmacological activities. The aim of this study was to evaluate the antinociceptive effect of estragole (Es) and its β-cyclodextrins inclusion complex (Es/β-CD). (2) Methods: the effects of Es and Es/β-CD on the central nervous system (CNS) were evaluated through open field and rota-rod assays, and the antinociceptive effect in formalin models, abdominal writhing induced by acetic acid, hot plate, tail flick test and plantar mechanical hyperalgesia. (3) Results: Es and Es/β-CD showed no alterations on the CNS evaluated parameters and the results suggested there was an antinociceptive action in the formalin, abdominal writhing, hot plate, tail flick tests and plantar mechanical hyperalgesia, proposing the involvement of the nitric oxide, glutamatergic signaling pathways, cyclic guanosine monophosphate and vanilloid pathways. (4) Conclusion: the results suggest that Es and Es/β-CD have a promising antinociceptive potential as a possible alternative for the pharmacological treatment of pain, also showing that the encapsulation of Es in β-cyclodextrins probably improves its pharmacological properties, since the complexation process involves much lower amounts of the compound, contributing to better bioavailability and a lower probability of adverse effect development.
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Affiliation(s)
- Roger Henrique Sousa da Costa
- Laboratory of Pharmacology and Molecular Chemistry (LFQM), Department of Biological Chemistry, Regional University of Cariri-URCA, Pimenta 63.100-000, Ceará, Brazil
| | | | - Renata Torres Pessoa
- Laboratory of Pharmacology and Molecular Chemistry (LFQM), Department of Biological Chemistry, Regional University of Cariri-URCA, Pimenta 63.100-000, Ceará, Brazil
| | - Saad Ali Alshehri
- Department of Pharmacognosy, College of Pharmacy, King Khalid University, Abha 61421, Saudi Arabia
| | - Shadma Wahab
- Department of Pharmacognosy, College of Pharmacy, King Khalid University, Abha 61421, Saudi Arabia
| | - Md Faruque Ahmad
- Department of Clinical Nutrition, College of Applied Medical Sciences, Jazan University, Jazan 45142, Saudi Arabia
| | - Muath Suliman
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Khalid University, Abha 61421, Saudi Arabia
| | - Lucas Yure Santos da Silva
- Laboratory of Pharmacology and Molecular Chemistry (LFQM), Department of Biological Chemistry, Regional University of Cariri-URCA, Pimenta 63.100-000, Ceará, Brazil
| | - Isabel Sousa Alcântara
- Laboratory of Pharmacology and Molecular Chemistry (LFQM), Department of Biological Chemistry, Regional University of Cariri-URCA, Pimenta 63.100-000, Ceará, Brazil
| | - Andreza Guedes Barbosa Ramos
- Laboratory of Pharmacology and Molecular Chemistry (LFQM), Department of Biological Chemistry, Regional University of Cariri-URCA, Pimenta 63.100-000, Ceará, Brazil
| | - Maria Rayane Correia de Oliveira
- Laboratory of Pharmacology and Molecular Chemistry (LFQM), Department of Biological Chemistry, Regional University of Cariri-URCA, Pimenta 63.100-000, Ceará, Brazil
- Graduate Program in Biotechnology-Northeast Biotechnology Network (RENORBIO), State University of Ceará (UECE), Fortaleza 60741-000, Ceará, Brazil
| | - Francisco Lucas Alves Batista
- Laboratory of Pharmacology and Molecular Chemistry (LFQM), Department of Biological Chemistry, Regional University of Cariri-URCA, Pimenta 63.100-000, Ceará, Brazil
| | | | | | - Janaína Esmeraldo Rocha
- Laboratory of Microbiology and Molecular Biology, Department of Biological Chemistry, Regional University of Cariri-URCA, Pimenta 63.100-000, Ceará, Brazil
| | - Henrique Douglas Melo Coutinho
- Laboratory of Microbiology and Molecular Biology, Department of Biological Chemistry, Regional University of Cariri-URCA, Pimenta 63.100-000, Ceará, Brazil
| | - António Raposo
- CBIOS (Research Center for Biosciences and Health Technologies), Universidade Lusófona de Humanidades e Tecnologias, Campo Grande 376, 1749-024 Lisboa, Portugal
| | - Conrado Carrascosa
- Department of Animal Pathology and Production, Bromatology and Food Technology, Faculty of Veterinary, Universidad de Las Palmas de Gran Canaria, Trasmontaña s/n, 35413 Arucas, Spain
| | - José Raduan Jaber
- Departamento de Morfologia, Facultad de Veterinaria, Universidad de Las Palmas de Gran Canaria, 35413 Las Palmas de Gran Canaria, Spain
| | - Irwin Rose Alencar de Menezes
- Laboratory of Microbiology and Molecular Biology, Department of Biological Chemistry, Regional University of Cariri-URCA, Pimenta 63.100-000, Ceará, Brazil
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A Preliminary Study on Grip-Induced Nerve Damage Caused by a Soft Pneumatic Elastomeric Gripper. Polymers (Basel) 2022; 14:polym14204272. [PMID: 36297851 PMCID: PMC9611661 DOI: 10.3390/polym14204272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 09/10/2022] [Accepted: 10/08/2022] [Indexed: 11/17/2022] Open
Abstract
Forceps, clamps, and haemostats are essential surgical tools required for all surgical interventions. While they are widely used to grasp, hold, and manipulate soft tissue, their metallic rigid structure may cause tissue damage due to the potential risk of applying excessive gripping forces. Soft pneumatic surgical grippers fabricated by silicone elastomeric materials with low Young’s modulus may offer a promising solution to minimize this unintentional damage due to their inherent excellent compliance and compressibility. The goal of this work is to evaluate and compare the grip-induced nerve damage caused by the soft pneumatic elastomeric gripper and conventional haemostats during surgical manipulation. Twenty-four Wistar rats (male, seven weeks) are subjected to sciatic nerve compression (right hind limb) using the soft pneumatic elastomer gripper and haemostats. A histopathological analysis is conducted at different time-points (Day 0, Day 3, Day 7 and Day 13) after the nerve compression to examine the morphological tissue changes between the rats in the ‘soft gripper’ group and the ‘haemostats’ group. A free walking analysis is also performed to examine the walking function of the rats after recovery from different time points. Comparing the rigid haemostats and soft gripper groups, there is a visible difference in the degree of axonal vacuolar degeneration between the groups, which could suggest the presence of substantial nerve damage in the ‘haemostats’ group. The rats in the haemostats group exhibited reduced right hind paw pressure and paw size after the nerve compression. It shows that the rats tend not to exert more force on the affected right hind limb in the haemostats group compared to the soft gripper group. In addition, the stance duration was reduced in the injured right hind limb compared to the normal left hind limb in the haemostats group. These observations show that the soft pneumatic surgical gripper made of silicone elastomeric materials might reduce the severity of grip-induced damage by providing a safe compliant grip compared to the conventional haemostats. The soft pneumatic elastomer gripper could complement the current surgical gripping tool in delicate tissue manipulation.
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Dallazen JL, da Luz BB, Maria-Ferreira D, Nascimento AM, Cipriani TR, de Souza LM, Geppetti P, de Paula Werner MF. Local effects of natural alkylamides from Acmella oleracea and synthetic isobutylalkyl amide on neuropathic and postoperative pain models in mice. Fitoterapia 2022; 160:105224. [PMID: 35659524 DOI: 10.1016/j.fitote.2022.105224] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 05/25/2022] [Accepted: 05/26/2022] [Indexed: 11/25/2022]
Abstract
Neuropathic and postoperative pain are clinical conditions that impair the patient's quality of life. The current pharmacotherapy of both painful states is ineffective and accompanied by several side effects. In order to develop new therapeutics targets, the secondary metabolites of plants have been extensively studied. Acmella oleracea ("jambu") is a native plant from the Amazon region and rich in alkylamides, bioactive compounds responsible for inducing anesthetic and chemesthetic sensations. We previously demonstrated that the intraplantar administration of an hexanic fraction (HF) rich in alkylamides from jambu and the synthetic isobutylalkyl amide (IBA) at 0.1 μg/20 μL can promote antinociceptive and anti-inflammatory effects. Thus, this study aimed to evaluate the local effect of HF and IBA (0.1 μg/20 μL) on neuropathic (partial sciatic nerve ligation, PSNL) and postoperative pain (plantar incision surgery, PIS) models in mice. Seven days after the PSNL, the mechanical (von Frey test) and cold (acetone-evoked evaporative cooling) allodynia, and digital gait parameters were analyzed. The intraplantar HF and IBA treatments attenuated the mechanical and cold allodynia as well as the static (max. Contact and print area) and dynamic (stand duration) parameters of digital gait analyses. On the day after PIS, the mechanical allodynia, heat hyperalgesia (hot plate, 52 ± 0.1°C), and spontaneous nociception scores were evaluated. Topical treatment with HF reduced the mechanical allodynia, heat hyperalgesia, and spontaneous nociception scores. In contrast, IBA treatment only partially reduced the mechanical allodynia. In summary, the local treatment with HF was effective on both neuropathic and postoperative pain, as opposed to IBA, which only had an effect on neuropathic pain.
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Affiliation(s)
| | | | - Daniele Maria-Ferreira
- Department of Pharmacology, Federal University of Parana, Curitiba, Brazil; Instituto de Pesquisa Pelé Pequeno Príncipe, Faculdades Pequeno Príncipe, Curitiba, Brazil
| | - Adamara Machado Nascimento
- Department of Biochemistry and Molecular Biology, Federal University of Parana, Curitiba, Brazil; Multidisciplinary Center, Federal University of Acre, Cruzeiro do Sul, Brazil
| | - Thales Ricardo Cipriani
- Department of Biochemistry and Molecular Biology, Federal University of Parana, Curitiba, Brazil
| | - Lauro Mera de Souza
- Instituto de Pesquisa Pelé Pequeno Príncipe, Faculdades Pequeno Príncipe, Curitiba, Brazil
| | - Pierangelo Geppetti
- Department of Health Sciences, Section of Clinical Pharmacology and Oncology, University of Florence, Florence, Italy
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28
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Martins LA, Schiavo A, Xavier LL, Mestriner RG. The Foot Fault Scoring System to Assess Skilled Walking in Rodents: A Reliability Study. Front Behav Neurosci 2022; 16:892010. [PMID: 35571280 PMCID: PMC9100421 DOI: 10.3389/fnbeh.2022.892010] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 03/28/2022] [Indexed: 11/21/2022] Open
Abstract
The foot fault scoring system of the ladder rung walking test (LRWT) is used to assess skilled walking in rodents. However, the reliability of the LRWT foot fault score has not been properly addressed. This study was designed to address this issue. Two independent and blinded raters analyzed 20 rats and 20 mice videos. Each video was analyzed twice by the same rater (80 analyses per rater). The intraclass correlation coefficient (ICC) and the Kappa coefficient were employed to check the accuracy of agreement and reliability in the intra- and inter-rater analyses of the LRWT outcomes. Excellent intra- and inter-rater agreements were found for the forelimb, hindlimb, and both limbs combined in rats and mice. The agreement level was also excellent for total crossing time, total time stopped, and the number of stops during the walking path. Rating individual scores in the foot fault score system (0–6) ranged from satisfactory to excellent, in terms of the intraclass correlation indexes. Moreover, we showed that experienced and inexperienced raters can obtain reliable results if supervised training is provided. We concluded that the LRWT is a reliable and useful tool to study skilled walking in rodents and can help researchers address walking-related neurobiological questions.
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Affiliation(s)
- Lucas Athaydes Martins
- Graduate Program in Biomedical Gerontology, School of Medicine, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
- Neurorehabilitation and Neural Repair Research Group (NEUROPLAR), Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Aniuska Schiavo
- Graduate Program in Biomedical Gerontology, School of Medicine, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
- Neurorehabilitation and Neural Repair Research Group (NEUROPLAR), Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Léder Leal Xavier
- School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Régis Gemerasca Mestriner
- Graduate Program in Biomedical Gerontology, School of Medicine, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
- Neurorehabilitation and Neural Repair Research Group (NEUROPLAR), Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
- School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
- *Correspondence: Régis Gemerasca Mestriner, , orcid.org/0000-0001-9837-1691
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29
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de la Puente B, Zamanillo D, Romero L, Carceller A, Vela JM, Merlos M, Portillo-Salido E. Comprehensive Preclinical Assessment of Sensory, Functional, Motivational-Affective, and Neurochemical Outcomes in Neuropathic Pain: The Case of the Sigma-1 Receptor. ACS Pharmacol Transl Sci 2022; 5:240-254. [PMID: 35434530 PMCID: PMC9003638 DOI: 10.1021/acsptsci.2c00005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Indexed: 12/19/2022]
Abstract
Chronic pain remains a major health problem and is currently facing slow drug innovation. New drug treatments should address not only the sensory-discriminative but also functional and motivational-affective components of chronic pain. In a mouse model of neuropathic pain induced by partial sciatic nerve ligation (PSNL), we analyzed sensory and functional-like outcomes by hindpaw mechanical stimulation and automated gait analysis (CatWalk). We characterized over time a reward-seeking task based on diminished motivation for natural reinforcers (anhedonic-like behavior). To differentiate the appetitive ("wanting") and consummatory ("liking") aspects of motivational behavior, we quantified the latency and number of approaches to eat white chocolate, as well as the eating duration and amount consumed. We explored a putative chronic pain-induced dysregulation of monoamine function by measuring monoamine levels in the nucleus accumbens (NAc), a well-known brain reward area. Finally, we investigated the role of sigma-1 receptor (σ1R) modulation, a nonopioid target, in these multiple dimensions by genetic deletion and pharmacological dose-response studies. After 6 weeks, PSNL increased the approach latency and reduced the consumption of white chocolate in 20-25% of the mice, while around 50-60% had one or the other parameter affected independently. After 10 weeks, sham-operated mice also displayed anhedonic-like behavior. PSNL was associated with reduced extracellular baseline dopamine and increased norepinephrine in the NAc and with a suppression of increased dopamine and serotonin efflux in response to the rewarding stimulus. Genetic and pharmacological blockade of σ1R relieved these multiple alterations in nerve-injured mice. We comprehensively describe sensory, functional, and depression-like impairment of key components of motivated behavior associated with nerve injury. We provide a neurochemical substrate for the depressed mesocorticolimbic reward processing in chronic pain, with a potentially increased translational value. Our results also highlight σ1R for the therapeutic intervention of neuropathic pain.
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Affiliation(s)
| | - Daniel Zamanillo
- Welab Barcelona, Parc Científic de Barcelona, 08028 Barcelona, Spain
| | - Luz Romero
- Welab Barcelona, Parc Científic de Barcelona, 08028 Barcelona, Spain
| | - Alicia Carceller
- Welab Barcelona, Parc Científic de Barcelona, 08028 Barcelona, Spain
| | - José Miguel Vela
- Welab Barcelona, Parc Científic de Barcelona, 08028 Barcelona, Spain
| | - Manuel Merlos
- Welab Barcelona, Parc Científic de Barcelona, 08028 Barcelona, Spain
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30
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Martin-Lopez M, Fernandez-Muñoz B, Canovas S. Pluripotent Stem Cells for Spinal Cord Injury Repair. Cells 2021; 10:cells10123334. [PMID: 34943842 PMCID: PMC8699436 DOI: 10.3390/cells10123334] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 11/20/2021] [Accepted: 11/25/2021] [Indexed: 12/19/2022] Open
Abstract
Spinal cord injury (SCI) is a devastating condition of the central nervous system that strongly reduces the patient’s quality of life and has large financial costs for the healthcare system. Cell therapy has shown considerable therapeutic potential for SCI treatment in different animal models. Although many different cell types have been investigated with the goal of promoting repair and recovery from injury, stem cells appear to be the most promising. Here, we review the experimental approaches that have been carried out with pluripotent stem cells, a cell type that, due to its inherent plasticity, self-renewal, and differentiation potential, represents an attractive source for the development of new cell therapies for SCI. We will focus on several key observations that illustrate the potential of cell therapy for SCI, and we will attempt to draw some conclusions from the studies performed to date.
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Affiliation(s)
- Maria Martin-Lopez
- Cellular Reprogramming and Production Unit, Andalusian Network for the Design and Translation of Advanced Therapies, 41092 Sevilla, Spain;
- Correspondence: (M.M.-L.); (S.C.)
| | - Beatriz Fernandez-Muñoz
- Cellular Reprogramming and Production Unit, Andalusian Network for the Design and Translation of Advanced Therapies, 41092 Sevilla, Spain;
| | - Sebastian Canovas
- Physiology of Reproduction Group, Physiology Department, Mare Nostrum Campus, University of Murcia, 30100 Murcia, Spain
- Biomedical Research Institute of Murcia, IMIB-Arrixaca-UMU, 30120 Murcia, Spain
- Correspondence: (M.M.-L.); (S.C.)
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A Low-Cost, Autonomous Gait Detection and Estimation System for Analyzing Gait Impairments in Mice. JOURNAL OF HEALTHCARE ENGINEERING 2021; 2021:9937904. [PMID: 34804462 PMCID: PMC8604610 DOI: 10.1155/2021/9937904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 09/03/2021] [Accepted: 10/27/2021] [Indexed: 11/18/2022]
Abstract
With the advancement in imaging technology, many commercial systems have been developed for performing motion analysis in mice. However, available commercial systems are expensive and use proprietary software. In this paper, we describe a low-cost, camera-based design of an autonomous gait acquisition and analysis system for inspecting gait deficits in C57BL/6 mice. Our system includes video acquisition, autonomous gait-event detection, gait-parameter extraction, and result visualization. We provide a simple, user-friendly, step-by-step detailed methodology to apply well-known image processing techniques for detecting mice footfalls and calculating various gait parameters for analyzing gait abnormalities in healthy and neurotraumatic mice. The system was used in a live animal study for assessing recovery in a mouse model of Parkinson's disease. Using the videos acquired in the study, we validate the performance of our system with receiver operating characteristic (ROC) and Hit : Miss : False (H : M : F) detection analyses. Our system correctly detected the mice footfalls with an average H : M : F score of 92.1 : 2.3 : 5.6. The values for the area under an ROC curve for all the ROC plots are above 0.95, which indicates an almost perfect detection model. The ROC and H : M : F analyses show that our system produces accurate gait detection. The results observed from the gait assessment study are in agreement with the known literature. This demonstrates the practical viability of our system as a gait analysis tool.
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Liu Y, Peng L, Li L, Huang C, Shi K, Meng X, Wang P, Wu M, Li L, Cao H, Wu K, Zeng Q, Pan H, Lu WW, Qin L, Ruan C, Wang X. 3D-bioprinted BMSC-laden biomimetic multiphasic scaffolds for efficient repair of osteochondral defects in an osteoarthritic rat model. Biomaterials 2021; 279:121216. [PMID: 34739982 DOI: 10.1016/j.biomaterials.2021.121216] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 10/13/2021] [Accepted: 10/20/2021] [Indexed: 01/09/2023]
Abstract
Osteochondral defect repair in osteoarthritis (OA) remains an unsolved clinical problem due to the lack of enough seed cells in the defect and chronic inflammation in the joint. To address this clinical need, we designed a bone marrow-derived mesenchymal stem cell (BMSC)-laden 3D-bioprinted multilayer scaffold with methacrylated hyaluronic acid (MeHA)/polycaprolactone incorporating kartogenin and β-TCP for osteochondral defect repair within each region. BMSC-laden MeHA was designed to actively introduce BMSCs in situ, and diclofenac sodium (DC)-incorporated matrix metalloproteinase-sensitive peptide-modified MeHA was induced on the BMSC-laden scaffold as an anti-inflammatory strategy. BMSCs in the scaffolds survived, proliferated, and produced large amounts of cartilage-specific extracellular matrix in vitro. The effect of BMSC-laden scaffolds on osteochondral defect repair was investigated in an animal model of medial meniscectomy-induced OA. BMSC-laden scaffolds facilitated chondrogenesis by promoting collagen II and suppressed interleukin 1β in osteochondral defects of the femoral trochlea. Congruently, BMSC-laden scaffolds significantly improved joint function of the injured leg with respect to the ground support force, paw grip force, and walk gait parameters. Therefore, this research demonstrates the potential of 3D-bioprinted BMSC-laden scaffolds to simultaneously inhibit joint inflammation and promote cartilage defect repair in OA joints.
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Affiliation(s)
- Yanzhi Liu
- Translational Medicine R&D Center, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China; Guangdong Key Laboratory for Research and Development of Natural Drugs, Marine Medical Research Institute, Guangdong Medical University, Zhanjiang, 524023, China
| | - Liuqi Peng
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Lingli Li
- Translational Medicine R&D Center, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Cuishan Huang
- Translational Medicine R&D Center, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Keda Shi
- Translational Medicine R&D Center, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Xiangbo Meng
- Translational Medicine R&D Center, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Pinpin Wang
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Mingming Wu
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Ling Li
- Translational Medicine R&D Center, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Huijuan Cao
- Translational Medicine R&D Center, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Kefeng Wu
- Guangdong Key Laboratory for Research and Development of Natural Drugs, Marine Medical Research Institute, Guangdong Medical University, Zhanjiang, 524023, China
| | - Qingqiang Zeng
- Translational Medicine R&D Center, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Haobo Pan
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - William Weijia Lu
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China; Department of Orthopaedic and Traumatology, The University of Hong Kong, 21 Sassoon Road, Pokfulam, Hong Kong SAR, China
| | - Ling Qin
- Translational Medicine R&D Center, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China; Musculoskeletal Research Laboratory of Department of Orthopaedics & Traumatology and Innovative Orthopaedic Biomaterial and Drug Translational Research Laboratory of Li Ka Shing Institute of Health, The Chinese University of Hong Kong, Hong Kong SAR, China.
| | - Changshun Ruan
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China.
| | - Xinluan Wang
- Translational Medicine R&D Center, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China.
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Jia D, Sun Y, Liu G, Xue M, Huang Z, Huang C. Trifluoro-icaritin alleviates mechanical hypersensitivity and improves motor coordination and balance in rats with spared nerve injury-induced neuropathic pain. Neurosci Lett 2021; 761:136125. [PMID: 34302890 DOI: 10.1016/j.neulet.2021.136125] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 04/21/2021] [Accepted: 07/09/2021] [Indexed: 12/25/2022]
Abstract
Neuropathic pain is still one of the unsolved public health problems worldwide. Although the current reagents can attenuate neuropathic pain to a certain extent, their clinical application is very limited owing to larger toxicity and serious side effects. Trifluoro-icaritin (ICTF) has been documented to possess profound anti-inflammatory and neuroprotective activities, but whether ICTF exerts an anti-nociceptive effect on neuropathic pain remains unknown. Here, a rat model of spared nerve injury (SNI)-induced neuropathic pain was used. SNI rats were administrated with ICTF (i.p.) once daily lasting for 21 days, and subsequently the pain-related behaviors were evaluated by applying mechanical or thermal pain threshold, CatWalk gait parameter, and rotarod test on day 1 before and day 1, 3, 7, 10, 14, and 21 after SNI surgery, respectively. The results showed that ICTF (0.5 mg/kg, 1.5 mg/kg, and 5.0 mg/kg, i.p.) treatment alleviated SNI-induced mechanical allodynia but not thermal hyperalgesia in a dose-dependent manner. After administration of ICTF at the most effective dose of 5.0 mg/kg to SNI rats, CatWalk gait analysis revealed that ICTF not only significantly enhanced gait parameters including max contact max intensity, max intensity, print area, and stand time but also decreased the swing time; Rotarod test further exhibited that ICTF could effectively prolong the time on rod and increase the rotating speed in SNI rats. Additionally, following ICTF (5.0 mg/kg) treatment of SNI rats for 21 consecutive days, the max contact max intensity was found to be positively correlated with the rotating speed. Taken together, ICTF successfully ameliorates mechanical hypersensitivity and improves the motor coordination and balance in SNI rats, suggesting that ICTF may be exploited as a potential candidate in the management of neuropathic pain.
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Affiliation(s)
- Dandan Jia
- Department of Physiology, School of Basic Medicine Sciences, Gannan Medical University, Ganzhou 341000, PR China
| | - Yalan Sun
- Department of Physiology, School of Basic Medicine Sciences, Gannan Medical University, Ganzhou 341000, PR China
| | - Guangsen Liu
- Department of Physiology, School of Basic Medicine Sciences, Gannan Medical University, Ganzhou 341000, PR China
| | - Meng Xue
- Department of Physiology, School of Basic Medicine Sciences, Gannan Medical University, Ganzhou 341000, PR China
| | - Zhihua Huang
- Department of Physiology, School of Basic Medicine Sciences, Gannan Medical University, Ganzhou 341000, PR China; Pain Medicine Research Institute, Gannan Medical University, Ganzhou 341000, PR China
| | - Cheng Huang
- Department of Physiology, School of Basic Medicine Sciences, Gannan Medical University, Ganzhou 341000, PR China; Pain Medicine Research Institute, Gannan Medical University, Ganzhou 341000, PR China.
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Kang DW, Choi JG, Kim J, Park JB, Lee JH, Kim HW. Bee venom reduces burn-induced pain via the suppression of peripheral and central substance P expression in mice. J Vet Sci 2021; 22:e9. [PMID: 33522161 PMCID: PMC7850793 DOI: 10.4142/jvs.2021.22.e9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 12/03/2020] [Accepted: 12/13/2020] [Indexed: 11/20/2022] Open
Abstract
Background Scalding burn injuries can occur in everyday life but occur more frequently in young children. Therefore, it is important to develop more effective burn treatments. Objectives This study examined the effects of bee venom (BV) stimulation on scalding burn injury-induced nociception in mice as a new treatment for burn pain. Methods To develop a burn injury model, the right hind paw was immersed temporarily in hot water (65°C, 3 seconds). Immediately after the burn, BV (0.01, 0.02, or 0.1 mg/kg) was injected subcutaneously into the ipsilateral knee area once daily for 14 days. A von Frey test was performed to assess the nociceptive response, and the altered walking parameters were evaluated using an automated gait analysis system. In addition, the peripheral and central expression changes in substance P (Sub P) were measured in the dorsal root ganglion and spinal cord by immunofluorescence. Results Repeated BV treatment at the 2 higher doses used in this study (0.02 and 0.1 mg/kg) alleviated the pain responses remarkably and recovered the gait performances to the level of acetaminophen (200 mg/kg, intraperitoneal, once daily), which used as the positive control group. Moreover, BV stimulation had an inhibitory effect on the increased expression of Sub P in the peripheral and central nervous systems by a burn injury. Conclusions These results suggest that a peripheral BV treatment may have positive potency in treating burn-induced pain.
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Affiliation(s)
- Dong Wook Kang
- Department of Physiology and Medical Science, College of Medicine and Brain Research Institute, Chungnam National University, Daejeon 35015, Korea
| | - Jae Gyun Choi
- Department of Physiology and Medical Science, College of Medicine and Brain Research Institute, Chungnam National University, Daejeon 35015, Korea
| | - Jaehyuk Kim
- Department of Physiology and Medical Science, College of Medicine and Brain Research Institute, Chungnam National University, Daejeon 35015, Korea
| | - Jin Bong Park
- Department of Physiology and Medical Science, College of Medicine and Brain Research Institute, Chungnam National University, Daejeon 35015, Korea
| | - Jang Hern Lee
- Department of Veterinary Physiology, BK21 PLUS Program for Creative Veterinary Science Research, Research Institute for Veterinary Science and College of Veterinary Medicine, Seoul National University, Seoul 08826, Korea
| | - Hyun Woo Kim
- Department of Physiology and Medical Science, College of Medicine and Brain Research Institute, Chungnam National University, Daejeon 35015, Korea.
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Bouali-Benazzouz R, Landry M, Benazzouz A, Fossat P. Neuropathic pain modeling: Focus on synaptic and ion channel mechanisms. Prog Neurobiol 2021; 201:102030. [PMID: 33711402 DOI: 10.1016/j.pneurobio.2021.102030] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Accepted: 02/22/2021] [Indexed: 12/28/2022]
Abstract
Animal models of pain consist of modeling a pain-like state and measuring the consequent behavior. The first animal models of neuropathic pain (NP) were developed in rodents with a total lesion of the sciatic nerve. Later, other models targeting central or peripheral branches of nerves were developed to identify novel mechanisms that contribute to persistent pain conditions in NP. Objective assessment of pain in these different animal models represents a significant challenge for pre-clinical research. Multiple behavioral approaches are used to investigate and to validate pain phenotypes including withdrawal reflex to evoked stimuli, vocalizations, spontaneous pain, but also emotional and affective behaviors. Furthermore, animal models were very useful in investigating the mechanisms of NP. This review will focus on a detailed description of rodent models of NP and provide an overview of the assessment of the sensory and emotional components of pain. A detailed inventory will be made to examine spinal mechanisms involved in NP-induced hyperexcitability and underlying the current pharmacological approaches used in clinics with the possibility to present new avenues for future treatment. The success of pre-clinical studies in this area of research depends on the choice of the relevant model and the appropriate test based on the objectives of the study.
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Affiliation(s)
- Rabia Bouali-Benazzouz
- Université de Bordeaux, Institut des Maladies Neurodégénératives, UMR 5293, Bordeaux, France; CNRS, Institut des Maladies Neurodégénératives, UMR 5293, Bordeaux, France.
| | - Marc Landry
- Université de Bordeaux, Institut des Maladies Neurodégénératives, UMR 5293, Bordeaux, France; CNRS, Institut des Maladies Neurodégénératives, UMR 5293, Bordeaux, France
| | - Abdelhamid Benazzouz
- Université de Bordeaux, Institut des Maladies Neurodégénératives, UMR 5293, Bordeaux, France; CNRS, Institut des Maladies Neurodégénératives, UMR 5293, Bordeaux, France
| | - Pascal Fossat
- Université de Bordeaux, Institut des Maladies Neurodégénératives, UMR 5293, Bordeaux, France; CNRS, Institut des Maladies Neurodégénératives, UMR 5293, Bordeaux, France
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Kankowski S, Grothe C, Haastert-Talini K. Neuropathic pain: Spotlighting anatomy, experimental models, mechanisms, and therapeutic aspects. Eur J Neurosci 2021; 54:4475-4496. [PMID: 33942412 DOI: 10.1111/ejn.15266] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 04/19/2021] [Accepted: 04/28/2021] [Indexed: 12/30/2022]
Abstract
The International Association for the Study of Pain defines neuropathic pain as "pain arising as a direct consequence of a lesion or disease affecting the somatosensory system". The associated changes can be observed in the peripheral as well as the central nervous system. The available literature discusses a wide variety of causes as predisposing for the development and amplification of neuropathic pain. Further, key interactions within sensory pathways have been discovered, but no common molecular mechanism leading to neuropathic pain has been identified until now. In the first part of this review, the pain mediating lateral spinothalamic tract is described. Different in vivo models are presented that allow studying trauma-, chemotherapy-, virus-, and diabetes-induced neuropathic pain in rodents. We furthermore discuss approaches to assess neuropathic pain in these models. Second, the current knowledge about cellular and molecular mechanisms suggested to underlie the development of neuropathic pain is presented and discussed. A summary of established therapies that are already applied in the clinic and novel, promising approaches closes the paper. In conclusion, the established animal models are able to emulate the diversity of neuropathic pain observed in the clinics. However, the assessment of neuropathic pain in the presented in vivo models should be improved. The determination of common molecular markers with suitable in vitro models would simplify the assessment of neuropathic pain in vivo. This would furthermore provide insights into common molecular mechanisms of the disease and establish a basis to search for satisfying therapeutic approaches.
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Affiliation(s)
- Svenja Kankowski
- Institute of Neuroanatomy and Cell Biology, Hannover Medical School (MHH), Hannover, Germany
| | - Claudia Grothe
- Institute of Neuroanatomy and Cell Biology, Hannover Medical School (MHH), Hannover, Germany.,Center for Systems Neuroscience (ZNS) Hannover, Hannover, Germany
| | - Kirsten Haastert-Talini
- Institute of Neuroanatomy and Cell Biology, Hannover Medical School (MHH), Hannover, Germany.,Center for Systems Neuroscience (ZNS) Hannover, Hannover, Germany
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37
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Rui F, Jiawei K, Yuntao H, Xinran L, Jiani H, Ruixue M, Rui L, Na Z, Meihong X, Yong L. Undenatured type II collagen prevents and treats osteoarthritis and motor function degradation in T2DM patients and db/db mice. Food Funct 2021; 12:4373-4391. [PMID: 33890588 DOI: 10.1039/d0fo03011b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Osteoarthritis (OA) has been scarcely researched among patients with diabetes mellitus. This study aims to confirm the preventive and therapeutic effects of undenatured type II collagen (UC II) on OA in aging db/db mice and in patients with T2DM. Firstly, aging db/db mice were randomly assigned to three groups: the UC II intervention (UC II) group, old model (OM) group and positive control group. Meanwhile db/m mice and young db/db mice were used as the normal control and young control groups, respectively. Secondly, fifty-five T2DM patients diagnosed with knee OA were randomly assigned to two groups: UC-II and placebo control groups. After a three-month intervention in both mice and T2DM patients, the subjects' gait and physical activities were assessed and the serum biomarkers including inflammatory cytokines, oxidative stress factors and matrix metalloproteinases (MMPs) were measured. Compared with the OM group mice, those in the UC II group showed a significantly greater superiority in terms of motor functions including the movement trajectories area (163.25 ± 20.3 vs. 78.52 ± 20.14 cm2), the tremor index (0.42 vs. 1.23), standing time (left hind: 0.089 ± 0.03 vs. 0.136 ± 0.04 s), swing (right front: 0.12 ± 0.02 vs. 0.216 ± 0.02 s), stride length (right hind: 7.2 ± 0.9 vs. 5.7 ± 1.1 cm), step cycle (right hind: 0.252 ± 0.05 vs. 0.478 ± 0.11 s) and cadence (14.12 ± 2.7 vs. 7.35 ± 4.4 steps per s). In addition, the levels of IL-4, IL-10, CTX- II and TGF-β in the UC II group were 1.74, 2.23, 1.67 and 1.84 times higher than those in the OM group, respectively, while the levels of MMP-3 and MMP-13 in the UC II group were half those in the OM group. Correspondingly, UC II intervention significantly decreased the scores of pain, stiffness and physical function (p < 0.05), whereas the 6 MWT and total MET distances in the UC II group increased remarkably (p < 0.05). After a three-month period of intervention, the varus angle significantly decreased from 4.6 ± 2.0° to 3.0 ± 1.4° and the knee flexion range obviously increased from 57.9 ± 14.0° to 66.9 ± 10.4°. Importantly, the declining trend in the levels of hs-CRP and MDA and the incremental trend in the SOD level were consistent in the db/db mice and OA patients following UC II administration.
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Affiliation(s)
- Fan Rui
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China.
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Ohnesorge N, Heinl C, Lewejohann L. Current Methods to Investigate Nociception and Pain in Zebrafish. Front Neurosci 2021; 15:632634. [PMID: 33897350 PMCID: PMC8061727 DOI: 10.3389/fnins.2021.632634] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 03/16/2021] [Indexed: 12/13/2022] Open
Abstract
Pain is an unpleasant, negative emotion and its debilitating effects are complex to manage. Mammalian models have long dominated research on nociception and pain, but there is increasing evidence for comparable processes in fish. The need to improve existing pain models for drug research and the obligation for 3R refinement of fish procedures facilitated the development of numerous new assays of nociception and pain in fish. The zebrafish is already a well-established animal model in many other research areas like toxicity testing, as model for diseases or regeneration and has great potential in pain research, too. Methods of electrophysiology, molecular biology, analysis of reflexive or non-reflexive behavior and fluorescent imaging are routinely applied but it is the combination of these tools what makes the zebrafish model so powerful. Simultaneously, observing complex behavior in free-swimming larvae, as well as their neuronal activity at the cellular level, opens new avenues for pain research. This review aims to supply a toolbox for researchers by summarizing current methods to study nociception and pain in zebrafish. We identify treatments with the best algogenic potential, be it chemical, thermal or electric stimuli and discuss options of analgesia to counter effects of nociception and pain by opioids, non-steroidal anti-inflammatory drugs (NSAIDs) or local anesthetics. In addition, we critically evaluate these practices, identify gaps of knowledge and outline potential future developments.
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Affiliation(s)
- Nils Ohnesorge
- German Federal Institute for Risk Assessment (BfR), German Centre for the Protection of Laboratory Animals (Bf3R), Berlin, Germany
| | - Céline Heinl
- German Federal Institute for Risk Assessment (BfR), German Centre for the Protection of Laboratory Animals (Bf3R), Berlin, Germany
| | - Lars Lewejohann
- German Federal Institute for Risk Assessment (BfR), German Centre for the Protection of Laboratory Animals (Bf3R), Berlin, Germany
- Institute of Animal Welfare, Animal Behavior and Laboratory Animal Science, Freie Universität Berlin, Berlin, Germany
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Heinzel JC, Oberhauser V, Keibl C, Swiadek N, Längle G, Frick H, Kolbenschlag J, Prahm C, Grillari J, Hercher D. Evaluation of Functional Recovery in Rats After Median Nerve Resection and Autograft Repair Using Computerized Gait Analysis. Front Neurosci 2021; 14:593545. [PMID: 33551723 PMCID: PMC7859340 DOI: 10.3389/fnins.2020.593545] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 12/11/2020] [Indexed: 12/12/2022] Open
Abstract
Computerized gait analysis is a common evaluation method in rat models of hind limb nerve injuries, but its use remains unpublished in models of segmental nerve injury of the forelimb. It was the aim of this work to investigate if computerized gait analysis is a feasible evaluation method in a rat model of segmental median nerve injury and autograft repair. Ten male Lewis rats underwent 7-mm resection of the right median nerve with immediate autograft repair. The left median nerve was resected without repair and served as an internal control. Animals were assessed for 12 weeks after surgery via CatWalk (CW) gait analysis every 2 weeks. Evaluation of motor recovery by means of the grasping test was performed weekly while electrophysiological measurements were performed at the end of the observation period. CW data were correlated with grasping strength at each post-operative time point. CW data were also correlated with electrophysiology using linear regression analysis. Principal component analysis was performed to identify clusters of outcome metrics. Recovery of motor function was observable 4 weeks after surgery, but grasping strength was significantly reduced (p < 0.01) compared to baseline values until post-operative week 6. In terms of sensory recovery, the pain-related parameter Duty Cycle showed significant (p < 0.05) recovery starting from post-operative week 8. The Print Area of the right paw was significantly (p < 0.05) increased compared to the left side starting from post-operative week 10. Various parameters of gait correlated significantly (p < 0.05) with mean and maximum grasping strength. However, only Stand Index showed a significant correlation with compound muscle action potential (CMAP) amplitude (p < 0.05). With this work, we prove that computerized gait analysis is a valid and feasible method to evaluate functional recovery after autograft repair of the rat median nerve. We were able to identify parameters such as Print Area, Duty Cycle, and Stand Index, which allow assessment of nerve regeneration. The course of these parameters following nerve resection without repair was also assessed. Additionally, external paw rotation was identified as a valid parameter to evaluate motor reinnervation. In summary, computerized gait analysis is a valuable additional tool to study nerve regeneration in rats with median nerve injury.
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Affiliation(s)
- Johannes C Heinzel
- Department of Hand, Plastic, Reconstructive and Burn Surgery, BG Trauma Center Tuebingen, Eberhard Karls University Tuebingen, Tuebingen, Germany.,Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Viola Oberhauser
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Claudia Keibl
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Nicole Swiadek
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Gregor Längle
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Helen Frick
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Jonas Kolbenschlag
- Department of Hand, Plastic, Reconstructive and Burn Surgery, BG Trauma Center Tuebingen, Eberhard Karls University Tuebingen, Tuebingen, Germany
| | - Cosima Prahm
- Department of Hand, Plastic, Reconstructive and Burn Surgery, BG Trauma Center Tuebingen, Eberhard Karls University Tuebingen, Tuebingen, Germany
| | - Johannes Grillari
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria.,Department of Biotechnology, Institute of Molecular Biotechnology, BOKU-University of Natural Resources and Life Sciences Vienna, Vienna, Austria
| | - David Hercher
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
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40
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Koshimizu H, Ohkawara B, Nakashima H, Ota K, Kanbara S, Inoue T, Tomita H, Sayo A, Kiryu-Seo S, Konishi H, Ito M, Masuda A, Ishiguro N, Imagama S, Kiyama H, Ohno K. Zonisamide ameliorates neuropathic pain partly by suppressing microglial activation in the spinal cord in a mouse model. Life Sci 2020; 263:118577. [DOI: 10.1016/j.lfs.2020.118577] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 09/26/2020] [Accepted: 10/03/2020] [Indexed: 01/19/2023]
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41
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The influence of rat strain on the development of neuropathic pain and comorbid anxio-depressive behaviour after nerve injury. Sci Rep 2020; 10:20981. [PMID: 33262364 PMCID: PMC7708988 DOI: 10.1038/s41598-020-77640-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 11/13/2020] [Indexed: 12/16/2022] Open
Abstract
Back-translating the clinical manifestations of human disease burden into animal models is increasingly recognized as an important facet of preclinical drug discovery. We hypothesized that inbred rat strains possessing stress hyper-reactive-, depressive- or anxiety-like phenotypes may possess more translational value than common outbred strains for modeling neuropathic pain. Rats (inbred: LEW, WKY, F344/ICO and F344/DU, outbred: Crl:SD) were exposed to Spared Nerve Injury (SNI) and evaluated routinely for 6 months on behaviours related to pain (von Frey stimulation and CatWalk-gait analysis), anxiety (elevated plus maze, EPM) and depression (sucrose preference test, SPT). Markers of stress reactivity together with spinal/brain opioid receptor expression were also measured. All strains variously developed mechanical allodynia after SNI with the exception of stress-hyporesponsive LEW rats, despite all strains displaying similar functional gait-deficits after injury. However, affective changes reflective of anxiety- and depressive-like behaviour were only observed for F344/DU in the EPM, and for Crl:SD in SPT. Although differences in stress reactivity and opioid receptor expression occurred, overall they were relatively unaffected by SNI. Thus, anxio-depressive behaviours did not develop in all strains after nerve injury, and correlated only modestly with degree of pain sensitivity or with genetic predisposition to stress and/or affective disturbances.
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Zhu YB, Jia GL, Wang JW, Ye XY, Lu JH, Chen JL, Zhang MB, Xie CS, Shen YJ, Tao YX, Li J, Cao H. Activation of CaMKII and GluR1 by the PSD-95-GluN2B Coupling-Dependent Phosphorylation of GluN2B in the Spinal Cord in a Rat Model of Type-2 Diabetic Neuropathic Pain. J Neuropathol Exp Neurol 2020; 79:800-808. [PMID: 32386416 DOI: 10.1093/jnen/nlaa035] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Accepted: 04/02/2020] [Indexed: 12/29/2022] Open
Abstract
The mechanisms underlying type-2 diabetic neuropathic pain (DNP) are unclear. This study investigates the coupling of postsynaptic density-95 (PSD-95) to N-methyl-D-aspartate receptor subunit 2B (GluN2B), and the subsequent phosphorylation of GluN2B (Tyr1472-GluN2B) in the spinal cord in a rat model of type-2 DNP. Expression levels of PSD-95, Tyr1472-GluN2B, Ca2+/calmodulin-dependent protein kinase II (CaMKII) and its phosphorylated counterpart (Thr286-CaMKII), and α-amino-3-hydroxy-5-methyl-4-soxazole propionic acid receptor subtype 1 (GluR1) and its phosphorylated counterpart (Ser831-GluR1) were significantly increased versus controls in the spinal cord of type-2 DNP rats whereas the expression of total spinal GluN2B did not change. The intrathecal injection of Ro25-6981 (a specific antagonist of GluN2B) or Tat-NR2B9c (a mimetic peptide disrupting the interaction between PSD-95 and GluN2B) induced an antihyperalgesic effect and blocked the increased expression of Tyr1472-GluN2B, CaMKII, GluR1, Thr286-CaMKII, and Ser831-GluR1 in the spinal cords; the increase in spinal cord PSD-95 was not affected. These findings indicate that the PSD-95-GluN2B interaction may increase phosphorylation of GluN2B, and subsequently induce the expression of phosphorylation of CaMKII and GluR1 in the spinal cord of type-2 DNP rats. Targeting the interaction of PSD-95 with GluN2B may provide a new therapeutic strategy for type-2 DNP.
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Affiliation(s)
- Ya-Bing Zhu
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Pain Medicine Institute of Wenzhou Medical University, Zhejiang, China.,Department of Anesthesiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Gai-Li Jia
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Pain Medicine Institute of Wenzhou Medical University, Zhejiang, China
| | - Jun-Wu Wang
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Pain Medicine Institute of Wenzhou Medical University, Zhejiang, China
| | - Xiu-Ying Ye
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Pain Medicine Institute of Wenzhou Medical University, Zhejiang, China
| | - Jia-Hui Lu
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Pain Medicine Institute of Wenzhou Medical University, Zhejiang, China
| | - Jia-Li Chen
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Pain Medicine Institute of Wenzhou Medical University, Zhejiang, China
| | - Mao-Biao Zhang
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Pain Medicine Institute of Wenzhou Medical University, Zhejiang, China
| | - Ci-Shan Xie
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Pain Medicine Institute of Wenzhou Medical University, Zhejiang, China
| | - Yu-Jing Shen
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Pain Medicine Institute of Wenzhou Medical University, Zhejiang, China
| | - Yuan-Xiang Tao
- Department of Anesthesiology, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, New Jersey
| | - Jun Li
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Pain Medicine Institute of Wenzhou Medical University, Zhejiang, China
| | - Hong Cao
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Pain Medicine Institute of Wenzhou Medical University, Zhejiang, China
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Bluette CT, Shoieb AM, Peng Q, Manickam B, Huang W, Shin E, Zhang W, Song YH, Liu CN. Behavioral, Histopathologic, and Molecular Biological Responses of Nanoparticle- and Solution-Based Formulations of Vincristine in Mice. Int J Toxicol 2020; 40:40-51. [PMID: 33148080 DOI: 10.1177/1091581820968255] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Clinical use of the chemotherapeutic agent vincristine (VCR) is limited by chemotherapy-induced peripheral neuropathy (CiPN). A new formulation of VCR encapsulated by nanoparticles has been proposed and developed to alleviate CiPN. We hypothesized in nonclinical animals that the nanoparticle drug would be less neurotoxic due to different absorption and distribution properties to the peripheral nerve from the unencapsulated free drug. Here, we assessed whether VCR encapsulation in nanoparticles alleviates CiPN using behavioral gait analysis (CatWalk), histopathologic and molecular biological (RT-qPCR) approaches. Adult male C57BL/6 mice were assigned to 3 groups (empty nanoparticle, nano-VCR, solution-based VCR, each n = 8). After 15 days of dosing, animals were euthanized for tissue collection. It was shown that intraperitoneal administration of nano-VCR (0.15 mg/kg, every other day) and the empty nanoparticle resulted in no changes in gait parameters; whereas, injection of solution-based VCR resulted in decreased run speed and increased step cycle and stance (P < 0.05). There were no differences in incidence and severity of degeneration in the sciatic nerves between the nano-VCR-dosed and solution-based VCR-dosed animals. Likewise, decreased levels of a nervous tissue-enriched microRNA-183 in circulating blood did not show a significant difference between the nano- and solution-based VCR groups (P > 0.05). Empty nanoparticle administration did not cause any behavioral, microRNA, or structural changes. In conclusion, this study suggests that the nano-VCR formulation may alleviate behavioral changes in CiPN, but it does not improve the structural changes of CiPN in peripheral nerve. Nanoparticle properties may need to be optimized to improve biological observations.
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Affiliation(s)
- Crystal T Bluette
- Comparative Medicine, 105623Pfizer Worldwide RD&M, Cambridge, MA, USA
| | - Ahmed M Shoieb
- Drug Safety R&D, 105623Pfizer Worldwide RD&M, Groton, CT, USA
| | - Qinghai Peng
- Drug Safety R&D, 105623Pfizer Worldwide RD&M, San Diego, CA, USA
| | | | - Wenhu Huang
- Drug Safety R&D, 105623Pfizer Worldwide RD&M, San Diego, CA, USA
| | - Eyoung Shin
- Oncology, 105623Pfizer Worldwide RD&M, Pearl River, NY, USA
| | - Wei Zhang
- Oncology, 105623Pfizer Worldwide RD&M, Pearl River, NY, USA
| | - Young-Ho Song
- Oncology, 105623Pfizer Worldwide RD&M, Pearl River, NY, USA
| | - Chang-Ning Liu
- Comparative Medicine, 105623Pfizer Worldwide RD&M, Groton, CT, USA. Peng is now with Protego Biopharma, San Diego, CA, USA
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Heinzel J, Längle G, Oberhauser V, Hausner T, Kolbenschlag J, Prahm C, Grillari J, Hercher D. Use of the CatWalk gait analysis system to assess functional recovery in rodent models of peripheral nerve injury – a systematic review. J Neurosci Methods 2020; 345:108889. [DOI: 10.1016/j.jneumeth.2020.108889] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 07/28/2020] [Accepted: 07/28/2020] [Indexed: 02/07/2023]
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Liu BL, Cao QL, Zhao X, Liu HZ, Zhang YQ. Inhibition of TRPV1 by SHP-1 in nociceptive primary sensory neurons is critical in PD-L1 analgesia. JCI Insight 2020; 5:137386. [PMID: 32960817 PMCID: PMC7605531 DOI: 10.1172/jci.insight.137386] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 09/10/2020] [Indexed: 12/15/2022] Open
Abstract
Recently programmed death-ligand 1 (PD-L1) receptor PD-1 was found in dorsal root ganglion (DRG) neurons, and PD-L1 activates PD-1 to inhibit inflammatory and neuropathic pain by modulating neuronal excitability. However, the downstream signaling of PD-1 in sensory neurons remains unclear. Here, we show that PD-L1 activated Src homology 2 domain-containing tyrosine phosphatase-1 (SHP-1) to downregulate transient receptor potential vanilloid 1 (TRPV1) in DRG neurons and inhibit bone cancer pain in mice. Local injection of PD-L1 produced analgesia. PD-1 in DRG neurons colocalized with TRPV1 and SHP-1. PD-L1 induced the phosphorylation of SHP-1 in DRG TRPV1 neurons and inhibited TRPV1 currents. Loss of TRPV1 in mice abolished bone cancer–induced thermal hyperalgesia and PD-L1 analgesia. Conditioned deletion of SHP-1 in NaV1.8+ neurons aggravated bone cancer pain and diminished the inhibition of PD-L1 on TRPV1 currents and pain. Together, our findings suggest that PD-L1/PD-1 signaling suppresses bone cancer pain via inhibition of TRPV1 activity. Our results also suggest that SHP-1 in sensory neurons is an endogenous pain inhibitor and delays the development of bone cancer pain via suppressing TRPV1 function. PD-L1/PD-1 signaling suppresses TRPV1 activity and alleviates pain-like behaviors via phosphorylation of SHP-1 in nociceptive primary sensory neurons in a mouse bone cancer model.
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Affiliation(s)
- Ben-Long Liu
- State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Department of Translational Neuroscience, Jing'an District Centre Hospital of Shanghai, Institutes of Brain Science, Fudan University, Shanghai, China
| | - Qi-Lai Cao
- State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Department of Translational Neuroscience, Jing'an District Centre Hospital of Shanghai, Institutes of Brain Science, Fudan University, Shanghai, China
| | - Xin Zhao
- State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Department of Translational Neuroscience, Jing'an District Centre Hospital of Shanghai, Institutes of Brain Science, Fudan University, Shanghai, China
| | - Hui-Zhu Liu
- State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Department of Translational Neuroscience, Jing'an District Centre Hospital of Shanghai, Institutes of Brain Science, Fudan University, Shanghai, China
| | - Yu-Qiu Zhang
- State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Department of Translational Neuroscience, Jing'an District Centre Hospital of Shanghai, Institutes of Brain Science, Fudan University, Shanghai, China.,Institutes of Integrative Medicine, Fudan University, Shanghai, China
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Nelvagal HR, Dearborn JT, Ostergaard JR, Sands MS, Cooper JD. Spinal manifestations of CLN1 disease start during the early postnatal period. Neuropathol Appl Neurobiol 2020; 47:251-267. [PMID: 32841420 PMCID: PMC7867600 DOI: 10.1111/nan.12658] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 07/29/2020] [Accepted: 08/25/2020] [Indexed: 01/28/2023]
Abstract
Aim To understand the progression of CLN1 disease and develop effective therapies we need to characterize early sites of pathology. Therefore, we performed a comprehensive evaluation of the nature and timing of early CLN1 disease pathology in the spinal cord, which appears especially vulnerable, and how this may affect behaviour. Methods We measured the spinal volume and neuronal number, and quantified glial activation, lymphocyte infiltration and oligodendrocyte maturation, as well as cytokine profile analysis during the early stages of pathology in Ppt1‐deficient (Ppt1−/−) mouse spinal cords. We then performed quantitative gait analysis and open‐field behaviour tests to investigate the behavioural correlates during this period. Results We detected significant microglial activation in Ppt1−/− spinal cords at 1 month. This was followed by astrocytosis, selective interneuron loss, altered spinal volumes and oligodendrocyte maturation at 2 months, before significant storage material accumulation and lymphocyte infiltration at 3 months. The same time course was apparent for inflammatory cytokine expression that was altered as early as one month. There was a transient early period at 2 months when Ppt1−/− mice had a significantly altered gait that resembles the presentation in children with CLN1 disease. This occurred before an anticipated decline in overall locomotor performance across all ages. Conclusion These data reveal disease onset 2 months (25% of life‐span) earlier than expected, while spinal maturation is still ongoing. Our multi‐disciplinary data provide new insights into the spatio‐temporal staging of CLN1 pathogenesis during ongoing postnatal maturation, and highlight the need to deliver therapies during the presymptomatic period.
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Affiliation(s)
- H R Nelvagal
- Department of Pediatrics, Washington University in St Louis, School of Medicine, St Louis, MO, USA
| | - J T Dearborn
- Department of Medicine, Washington University in St Louis, School of Medicine, St Louis, MO, USA
| | - J R Ostergaard
- Centre for Rare Diseases, Department of Paediatrics and Adolescent Medicine, Aarhus University Hospital, Aarhus, Denmark
| | - M S Sands
- Department of Medicine, Washington University in St Louis, School of Medicine, St Louis, MO, USA.,Department of Genetics, Washington University in St Louis, School of Medicine, St Louis, MO, USA
| | - J D Cooper
- Department of Pediatrics, Washington University in St Louis, School of Medicine, St Louis, MO, USA.,Department of Genetics, Washington University in St Louis, School of Medicine, St Louis, MO, USA.,Department of Neurology, Washington University in St Louis, School of Medicine, St Louis, MO, USA
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Vieira WF, Malange KF, de Magalhães SF, dos Santos GG, de Oliveira ALR, da Cruz-Höfling MA, Parada CA. Gait analysis correlates mechanical hyperalgesia in a model of streptozotocin-induced diabetic neuropathy: A CatWalk dynamic motor function study. Neurosci Lett 2020; 736:135253. [DOI: 10.1016/j.neulet.2020.135253] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 07/02/2020] [Accepted: 07/14/2020] [Indexed: 01/03/2023]
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Effect of Systemic Adipose-derived Stem Cell Therapy on Functional Nerve Regeneration in a Rodent Model. PLASTIC AND RECONSTRUCTIVE SURGERY-GLOBAL OPEN 2020; 8:e2953. [PMID: 32802651 PMCID: PMC7413771 DOI: 10.1097/gox.0000000000002953] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 05/07/2020] [Indexed: 12/15/2022]
Abstract
Supplemental Digital Content is available in the text. Regardless of etiology, peripheral nerve injuries (PNI) result in disruption/loss of neuromuscular junctions, target muscle denervation, and poor sensorimotor outcomes with associated pain and disability. Adipose-derived stem cells (ASCs) have shown promise in neuroregeneration. However, there is a paucity of objective assessments reflective of functional neuroregeneration in experimental PNI. Here, we use a multimodal, static, and dynamic approach to evaluate functional outcomes after ASC therapy in a rodent PNI model.
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Jacobs BY, Allen KD. Factors affecting the reliability of behavioral assessments for rodent osteoarthritis models. Lab Anim 2020; 54:317-329. [PMID: 31431137 PMCID: PMC7830740 DOI: 10.1177/0023677219867715] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The translational value of osteoarthritis (OA) models is often debated because numerous studies have shown that animal models frequently fail to predict the efficacy of therapies in humans. In part, this failing may be due to the paucity of preclinical studies that include behavioral assessments in their metrics. Behavioral assessments of animal OA models can provide valuable data on the pain and disability associated with disease-sequelae of significant clinical relevance. Clinical definitions of efficacy for OA therapeutics often center on their palliative effects. Thus, the widespread inclusion of behaviors indicative of pain and disability in preclinical animal studies may contribute to greater success identifying clinically relevant interventions. Unfortunately, studies that include behavioral assays still frequently encounter pitfalls in assay selection, protocol consistency, and data/methods transparency. Targeted selection of behavioral assays, with consideration of the array of clinical OA phenotypes and the limitations of individual behavioral assays, is necessary to identify clinically relevant outcomes in OA animal models appropriately. Furthermore, to facilitate accurate comparisons across research groups and studies, it is necessary to improve the transparency of methods. Finally, establishing agreed-upon and clear definitions of behavioral data will reduce the convolution of data both within and between studies. Improvement in these areas is critical to the continued benefit of preclinical animal studies as translationally relevant data in OA research. As such, this review highlights the current state of behavioral analyses in preclinical OA models.
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Affiliation(s)
- Brittany Y Jacobs
- J. Crayton Pruitt Family Department of Biomedical Engineering, Herbert Wertheim College of Engineering, University of Florida, Gainesville, FL, USA
| | - Kyle D Allen
- J. Crayton Pruitt Family Department of Biomedical Engineering, Herbert Wertheim College of Engineering, University of Florida, Gainesville, FL, USA
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The effects of mouse strain and age on a model of unilateral cervical contusion spinal cord injury. PLoS One 2020; 15:e0234245. [PMID: 32542053 PMCID: PMC7295191 DOI: 10.1371/journal.pone.0234245] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 05/21/2020] [Indexed: 12/30/2022] Open
Abstract
There are approximately 1.2 million people currently living with spinal cord injury (SCI), with a majority of cases at the cervical level and half involving incomplete injuries. Yet, as most preclinical research has been focused on bilateral thoracic models, there remains a disconnect between bench and bedside that limits translational success. Here, we profile a clinically relevant model of unilateral cervical contusion injury in the mouse (30kD with 0, 2, 5, or 10 second dwell time). We demonstrate sustained behavioral deficits in performance on grip strength, cylinder reaching, horizontal ladderbeam and CatWalk automated gait analysis tasks. Beyond highlighting reliable parameters for injury assessment, we also explored the effect of mouse strain and age on injury outcome, including evaluation of constitutively immunodeficient mice relevant for neurotransplantation and cellular therapy testing. Comparison of C57Bl/6 and immunodeficient Rag2gamma(c)-/- as well as Agouti SCIDxRag2Gamma(c)-/- hybrid mouse strains revealed fine differences in post-injury ipsilateral grip strength as well as total number of rearings on the cylinder task. Differences in post-SCI contralateral forepaw duty cycle and regularity index as measured by CatWalk gait analysis between the two immunodeficient strains were also observed. Further, assessment of young (3–4 months old) and aging (16–17 months old) Rag2gamma(c)-/- mice identified age-related pre-injury differences in strength and rearing that were largely masked following cervical contusion injury; observations that may help interpret previous results in aged rodents as well as human clinical trials. Collectively, the work provides useful insight for experimental design and analysis of future pre-clinical studies in a translational unilateral cervical contusion injury model.
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