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Lu S, Zhou Y, Liu M, Gong L, Liu L, Duan Z, Chen K, Gonzalez FJ, Wei F, Xiang R, Li G. Superoxide is an Intrinsic Signaling Molecule Triggering Muscle Hypertrophy. Antioxid Redox Signal 2024. [PMID: 38877802 DOI: 10.1089/ars.2024.0595] [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: 06/16/2024]
Abstract
Aims: Redox signaling plays a key role in skeletal muscle remodeling induced by exercise and prolonged inactivity, but it is unclear which oxidant triggers myofiber hypertrophy due to the lack of strategies to precisely regulate individual oxidants in vivo. In this study, we used tetrathiomolybdate (TM) to dissociate the link between superoxide (O2•-) and hydrogen peroxide and thereby to specifically explore the role of O2•- in muscle hypertrophy in C2C12 cells and mice. Results: TM can linearly regulate intracellular O2•- levels by inhibition of superoxide dismutase 1 (SOD1). A 70% increase in O2•- levels in C2C12 myoblast cells and mice is necessary and sufficient for triggering hypertrophy of differentiated myotubes and can enhance exercise performance by more than 50% in mice. SOD1 knockout blocks TM-induced O2•- increments and thereby prevents hypertrophy, whereas SOD1 restoration rescues all these effects. Scavenging O2•- with antioxidants abolishes TM-induced hypertrophy and the enhancement of exercise performance, whereas the restoration of O2•- levels with a O2•- generator promotes muscle hypertrophy independent of SOD1 activity. Innovation and Conclusion: These findings suggest that O2•- is an endogenous initiator of myofiber hypertrophy and that TM may be used to treat muscle wasting diseases. Our work not only suggests a novel druggable mechanism to increase muscle mass but also provides a tool for precisely regulating O2•- levels in vivo.
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Affiliation(s)
- Siyu Lu
- Center for Aging Biomedicine, National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Yiming Zhou
- Center for Aging Biomedicine, National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Mincong Liu
- Center for Aging Biomedicine, National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Lijun Gong
- Center for Aging Biomedicine, National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Li Liu
- Center for Aging Biomedicine, National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Zhigui Duan
- Center for Aging Biomedicine, National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Keke Chen
- Center for Aging Biomedicine, National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Frank J Gonzalez
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Fang Wei
- Center for Aging Biomedicine, National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, China
- Key Laboratory of Hunan Province for Model Animal and Stem Cell Biology, School of Medicine, Hunan Normal University, Changsha, China
- FuRong Laboratory, Changsha, China
| | - Rong Xiang
- Department of Cell Biology, School of Life Sciences, Central South University, Changsha, China
| | - Guolin Li
- Center for Aging Biomedicine, National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, China
- Key Laboratory of Hunan Province for Model Animal and Stem Cell Biology, School of Medicine, Hunan Normal University, Changsha, China
- FuRong Laboratory, Changsha, China
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2
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Marshall GF, Fasol M, Davies FCJ, Le Seelleur M, Fernandez Alvarez A, Bennett-Ness C, Gonzalez-Sulser A, Abbott CM. Face-valid phenotypes in a mouse model of the most common mutation in EEF1A2-related neurodevelopmental disorder. Dis Model Mech 2024; 17:dmm050501. [PMID: 38179821 PMCID: PMC10855229 DOI: 10.1242/dmm.050501] [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: 09/07/2023] [Accepted: 12/21/2023] [Indexed: 01/06/2024] Open
Abstract
De novo heterozygous missense mutations in EEF1A2, encoding neuromuscular translation-elongation factor eEF1A2, are associated with developmental and epileptic encephalopathies. We used CRISPR/Cas9 to recapitulate the most common mutation, E122K, in mice. Although E122K heterozygotes were not observed to have convulsive seizures, they exhibited frequent electrographic seizures and EEG abnormalities, transient early motor deficits and growth defects. Both E122K homozygotes and Eef1a2-null mice developed progressive motor abnormalities, with E122K homozygotes reaching humane endpoints by P31. The null phenotype is driven by progressive spinal neurodegeneration; however, no signs of neurodegeneration were observed in E122K homozygotes. The E122K protein was relatively stable in neurons yet highly unstable in skeletal myocytes, suggesting that the E122K/E122K phenotype is instead driven by loss of function in muscle. Nevertheless, motor abnormalities emerged far earlier in E122K homozygotes than in nulls, suggesting a toxic gain of function and/or a possible dominant-negative effect. This mouse model represents the first animal model of an EEF1A2 missense mutation with face-valid phenotypes and has provided mechanistic insights needed to inform rational treatment design.
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Affiliation(s)
- Grant F. Marshall
- Centre for Genomic & Experimental Medicine, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Crewe Road, Edinburgh EH4 2XU, UK
- Simons Initiative for the Developing Brain, University of Edinburgh, Edinburgh EH8 9XD, UK
| | - Melissa Fasol
- Simons Initiative for the Developing Brain, University of Edinburgh, Edinburgh EH8 9XD, UK
- Centre for Discovery Brain Sciences, University of Edinburgh, Edinburgh EH8 9XD, UK
| | - Faith C. J. Davies
- Centre for Genomic & Experimental Medicine, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Crewe Road, Edinburgh EH4 2XU, UK
- Simons Initiative for the Developing Brain, University of Edinburgh, Edinburgh EH8 9XD, UK
| | - Matthew Le Seelleur
- Centre for Genomic & Experimental Medicine, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Crewe Road, Edinburgh EH4 2XU, UK
| | - Alejandra Fernandez Alvarez
- Centre for Genomic & Experimental Medicine, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Crewe Road, Edinburgh EH4 2XU, UK
| | - Cavan Bennett-Ness
- Centre for Genomic & Experimental Medicine, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Crewe Road, Edinburgh EH4 2XU, UK
| | - Alfredo Gonzalez-Sulser
- Simons Initiative for the Developing Brain, University of Edinburgh, Edinburgh EH8 9XD, UK
- Centre for Discovery Brain Sciences, University of Edinburgh, Edinburgh EH8 9XD, UK
| | - Catherine M. Abbott
- Centre for Genomic & Experimental Medicine, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Crewe Road, Edinburgh EH4 2XU, UK
- Simons Initiative for the Developing Brain, University of Edinburgh, Edinburgh EH8 9XD, UK
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3
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Razavi MS, Ruscic KJ, Korn EG, Marquez M, Houle TT, Singhal D, Munn LL, Padera TP. A Multiresolution Approach with Method-Informed Statistical Analysis for Quantifying Lymphatic Pumping Dynamics. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.04.24.590950. [PMID: 38712181 PMCID: PMC11071510 DOI: 10.1101/2024.04.24.590950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Despite significant strides in lymphatic system imaging, the timely diagnosis of lymphatic disorders remains elusive. One main cause for this is the absence of standardized, quantitative methods for real-time analysis of lymphatic contractility. Here, we address this unmet need by combining near-infrared lymphangiography imaging with an innovative analytical workflow. We combined data acquisition, signal processing, and statistical analysis to integrate traditional peak and-valley with advanced wavelet time-frequency analyses. Decision theory was used to evaluate the primary drivers of attributable variance in lymphangiography measurements to generate a strategy for optimizing the number of repeat measurements needed per subject to increase measurement reliability. This approach not only offers detailed insights into lymphatic pumping behaviors across species, sex and age, but also significantly boosts the reliability of these measurements by incorporating multiple regions of interest and evaluating the lymphatic system under various gravitational loads. By addressing the critical need for improved imaging and quantification methods, our study offers a new standard approach for the imaging and analysis of lymphatic function that can improve our understanding, diagnosis, and treatment of lymphatic diseases. The results highlight the importance of comprehensive data acquisition strategies to fully capture the dynamic behavior of the lymphatic system.
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4
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El Brouzi MY, Lamtai M, Zghari O, El Hamzaoui A, Rezqaoui A, Hadch Z, Fath N, Ouichou A, El Hessni A, Mesfioui A. Melatonin is a Neuroprotective and Antioxidant Agent against Neurotoxicity Induced by an Intrahippocampal Injection of Nickel in Rats. Neurotox Res 2024; 42:24. [PMID: 38598025 DOI: 10.1007/s12640-024-00700-8] [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: 12/18/2023] [Revised: 02/27/2024] [Accepted: 03/16/2024] [Indexed: 04/11/2024]
Abstract
The investigation into the hippocampal function and its response to heavy metal exposure is crucial for understanding the mechanisms underlying neurotoxicity, this can potentially inform strategies for mitigating the adverse effects associated with heavy metal exposure. Melatonin is an essential neuromodulator known for its efficacy as an antioxidant. In this study, we aimed to determine whether melatonin could protect against Nickel (Ni) neurotoxicity. To achieve this, we performed an intracerebral injection of Ni (300 µM NiCl2) into the right hippocampus of male Wistar rats, followed by melatonin treatment. Based on neurobehavioral and neurobiochemical assessments, our results demonstrate that melatonin efficiently enhances Ni-induced behavioral dysfunction and cognitive impairment. Specifically, melatonin treatment positively influences anxious behavior, significantly reduces immobility time in the forced swim test (FST), and improves learning and spatial memory abilities. Moreover, neurobiochemical assays revealed that melatonin treatment modulates the Ni-induced alterations in oxidative stress balance by increasing antioxidant enzyme activities, such as superoxide dismutase (SOD) and catalase (CAT). Additionally, we observed that melatonin significantly attenuated the increased levels of lipid peroxidation (LPO) and nitric oxide (NO). In conclusion, the data from this study suggests that melatonin attenuates oxidative stress, which is the primary mechanism responsible for Ni-induced neurotoxicity. Considering that the hippocampus is the main structure involved in the pathology associated with heavy metal intoxication, such as Ni, these findings underscore the potential therapeutic efficacy of melatonin in mitigating heavy metal-induced brain damage.
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Affiliation(s)
- Mohamed Yassine El Brouzi
- Laboratory of Biology and Health, Neuro-Immunology and Behavior Unit, Faculty of Science, Ibn Tofail University, Kénitra, Morocco.
| | - Mouloud Lamtai
- Laboratory of Biology and Health, Neuro-Immunology and Behavior Unit, Faculty of Science, Ibn Tofail University, Kénitra, Morocco
| | - Oussama Zghari
- Laboratory of Biology and Health, Neuro-Immunology and Behavior Unit, Faculty of Science, Ibn Tofail University, Kénitra, Morocco
| | - Abdelghafour El Hamzaoui
- Laboratory of Biology and Health, Neuro-Immunology and Behavior Unit, Faculty of Science, Ibn Tofail University, Kénitra, Morocco
| | - Ayoub Rezqaoui
- Laboratory of Biology and Health, Neuro-Immunology and Behavior Unit, Faculty of Science, Ibn Tofail University, Kénitra, Morocco
| | - Zahra Hadch
- Laboratory of Biology and Health, Neuro-Immunology and Behavior Unit, Faculty of Science, Ibn Tofail University, Kénitra, Morocco
| | - Nada Fath
- Compared Anatomy Unit, School of Veterinary Medicine, Hassan II Institute of Agronomy and Veterinary Medicine, Rabat, Morocco
| | - Ali Ouichou
- Laboratory of Biology and Health, Neuro-Immunology and Behavior Unit, Faculty of Science, Ibn Tofail University, Kénitra, Morocco
| | - Aboubaker El Hessni
- Laboratory of Biology and Health, Neuro-Immunology and Behavior Unit, Faculty of Science, Ibn Tofail University, Kénitra, Morocco
| | - Abdelhalem Mesfioui
- Laboratory of Biology and Health, Neuro-Immunology and Behavior Unit, Faculty of Science, Ibn Tofail University, Kénitra, Morocco
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5
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Mitra J, Dharmalingam P, Kodavati MM, Guerrero EN, Rao KS, Garruto R, Hegde ML. Endogenous TDP-43 mislocalization in a novel knock-in mouse model reveals DNA repair impairment, inflammation, and neuronal senescence. RESEARCH SQUARE 2024:rs.3.rs-3879966. [PMID: 38343852 PMCID: PMC10854316 DOI: 10.21203/rs.3.rs-3879966/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/19/2024]
Abstract
TDP-43 mislocalization and aggregation are key pathological features of motor neuron diseases (MND) including amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD). However, transgenic hTDP-43 WT or ∆NLS-overexpression animal models mainly capture late-stages TDP-43 proteinopathy, and do not provide a complete understanding of early motor neuron-specific pathology during pre-symptomatic phases. We have now addressed this shortcoming by generating a new endogenous knock-in (KI) mouse model using a combination of CRISPR/Cas9 and FLEX Cre-switch strategy for the conditional expression of a mislocalized Tdp-43∆NLS variant of mouse Tdp-43. This variant is either expressed conditionally in whole mice or specifically in the motor neurons. The mice exhibit loss of nuclear Tdp-43 concomitant with its cytosolic accumulation and aggregation in targeted cells, leading to increased DNA double-strand breaks (DSBs), signs of inflammation and DNA damage-associated cellular senescence. Notably, unlike WT Tdp43 which functionally interacts with Xrcc4 and DNA Ligase 4, the key DSB repair proteins in the non-homologous end-joining (NHEJ) pathway, the Tdp-43∆NLS mutant sequesters them into cytosolic aggregates, exacerbating neuronal damage in mice brain. The mutant mice also exhibit myogenic degeneration in limb muscles and distinct motor deficits, consistent with the characteristics of MND. Our findings reveal progressive degenerative mechanisms in motor neurons expressing endogenous Tdp-43∆NLS mutant, independent of TDP-43 overexpression or other confounding etiological factors. Thus, this unique Tdp-43 KI mouse model, which displays key molecular and phenotypic features of Tdp-43 proteinopathy, offers a significant opportunity to further characterize the early-stage progression of MND and also opens avenues for developing DNA repair-targeted approaches for treating TDP-43 pathology-linked neurodegenerative diseases.
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6
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Cross C, Davies M, Bateman E, Crame E, Joyce P, Wignall A, Ariaee A, Gladman MA, Wardill H, Bowen J. Fibre-rich diet attenuates chemotherapy-related neuroinflammation in mice. Brain Behav Immun 2024; 115:13-25. [PMID: 37757978 DOI: 10.1016/j.bbi.2023.09.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 09/19/2023] [Accepted: 09/23/2023] [Indexed: 09/29/2023] Open
Abstract
The gastrointestinal microbiota has received increasing recognition as a key mediator of neurological conditions with neuroinflammatory features, through its production of the bioactive metabolites, short-chain fatty acids (SCFAs). Although neuroinflammation is a hallmark shared by the neuropsychological complications of chemotherapy (including cognitive impairment, fatigue and depression), the use of microbial-based therapeutics has not previously been studied in this setting. Therefore, we aimed to investigate the effect of a high fibre diet known to modulate the microbiota, and its associated metabolome, on neuroinflammation caused by the common chemotherapeutic agent 5-fluorouracil (5-FU). Twenty-four female C57Bl/6 mice were treated with 5-FU (400 mg/kg, intraperitoneal, i.p.) or vehicle control, with or without a high fibre diet (constituting amylose starch; 4.7 % crude fibre content), given one week prior to 5-FU and until study completion (16 days after 5-FU). Faecal pellets were collected longitudinally for 16S rRNA gene sequencing and terminal SCFA concentrations of the caecal contents were quantified using gas chromatography-mass spectrometry (GC-MS). Neuroinflammation was determined by immunofluorescent analysis of astrocyte density (GFAP). The high fibre diet significantly altered gut microbiota composition, increasing the abundance of Bacteroidaceae and Akkermansiaceae (p < 0.0001 and p = 0.0179) whilst increasing the production of propionate (p = 0.0097). In the context of 5-FU, the diet reduced GFAP expression in the CA1 region of the hippocampus (p < 0.0001) as well as the midbrain (p = 0.0216). Astrocyte density negatively correlated with propionate concentrations and the abundance of Bacteroidaceae and Akkermansiaceae, suggesting a relationship between neuroinflammatory and gastrointestinal markers in this model. This study provides the first evidence of the neuroprotective effects of fibre via dietary intake in alleviating the neuroimmune changes seen in response to systemically administered 5-FU, indicating that the microbiota-gut-brain axis is a targetable mediator to reduce the neurotoxic effects of chemotherapy treatment.
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Affiliation(s)
- Courtney Cross
- School of Biomedicine, University of Adelaide, South Australia, Australia; Supportive Oncology Research Group, Precision Cancer Medicine (Theme), South Australian Health and Medical Research Institute (SAHMRI), University of Adelaide, South Australia, Australia
| | - Maya Davies
- School of Biomedicine, University of Adelaide, South Australia, Australia; Supportive Oncology Research Group, Precision Cancer Medicine (Theme), South Australian Health and Medical Research Institute (SAHMRI), University of Adelaide, South Australia, Australia
| | - Emma Bateman
- School of Biomedicine, University of Adelaide, South Australia, Australia; Supportive Oncology Research Group, Precision Cancer Medicine (Theme), South Australian Health and Medical Research Institute (SAHMRI), University of Adelaide, South Australia, Australia
| | - Elise Crame
- School of Biomedicine, University of Adelaide, South Australia, Australia; Supportive Oncology Research Group, Precision Cancer Medicine (Theme), South Australian Health and Medical Research Institute (SAHMRI), University of Adelaide, South Australia, Australia
| | - Paul Joyce
- UniSA Clinical & Health Sciences, University of South Australia, South Australia, Australia
| | - Anthony Wignall
- UniSA Clinical & Health Sciences, University of South Australia, South Australia, Australia
| | - Amin Ariaee
- UniSA Clinical & Health Sciences, University of South Australia, South Australia, Australia
| | | | - Hannah Wardill
- School of Biomedicine, University of Adelaide, South Australia, Australia; Supportive Oncology Research Group, Precision Cancer Medicine (Theme), South Australian Health and Medical Research Institute (SAHMRI), University of Adelaide, South Australia, Australia.
| | - Joanne Bowen
- School of Biomedicine, University of Adelaide, South Australia, Australia
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7
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Di Bisceglie Caballero S, Ces A, Liberge M, Ambroggi F, Amalric M, Ouagazzal AM. Optogenetic Globus Pallidus Stimulation Improves Motor Deficits in 6-Hydroxydopamine-Lesioned Mouse Model of Parkinson's Disease. Int J Mol Sci 2023; 24:ijms24097935. [PMID: 37175643 PMCID: PMC10178372 DOI: 10.3390/ijms24097935] [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: 01/31/2023] [Revised: 03/31/2023] [Accepted: 04/24/2023] [Indexed: 05/15/2023] Open
Abstract
Excessive inhibition of the external globus pallidus (GPe) by striatal GABAergic neurons is considered a central mechanism contributing to motor symptoms of Parkinson's disease (PD). While electrophysiological findings support this view, behavioral studies assessing the beneficial effects of global GPe activations are scarce and the reported results are controversial. We used an optogenetic approach and the standard unilateral 6-hydroxydopamine nigrostriatal dopamine (DA) lesion model of PD to explore the effects of GPe photostimulation on motor deficits in mice. Global optogenetic GPe inhibition was used in normal mice to verify whether it reproduced the typical motor impairment induced by DA lesions. GPe activation improved ipsilateral circling, contralateral forelimb akinesia, locomotor hypoactivity, and bradykinesia in 6-OHDA-lesioned mice at ineffective photostimulation parameters (532 nm, 5 Hz, 3 mW) in normal mice. GPe photoinhibition (450 nm, 12 mW) had no effect on locomotor activity and forelimb use in normal mice. Bilateral photoinhibition (450 nm, 6 mW/side) reduced directed exploration and improved working memory performances indicating that recruitment of GPe in physiological conditions may depend on the behavioral task involved. Collectively, these findings shed new light on the functional role of GPe and suggest that it is a promising target for neuromodulatory restoration of motor deficits in PD.
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Affiliation(s)
| | - Aurelia Ces
- Aix-Marseille Université, CNRS, LNC (UMR 729), 13331 Marseille, France
| | - Martine Liberge
- Aix-Marseille Université, CNRS, LNC (UMR 729), 13331 Marseille, France
| | - Frederic Ambroggi
- Aix-Marseille Université, CNRS, LNC (UMR 729), 13331 Marseille, France
| | - Marianne Amalric
- Aix-Marseille Université, CNRS, LNC (UMR 729), 13331 Marseille, France
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8
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Shemesh Y, Chen A. A paradigm shift in translational psychiatry through rodent neuroethology. Mol Psychiatry 2023; 28:993-1003. [PMID: 36635579 PMCID: PMC10005947 DOI: 10.1038/s41380-022-01913-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 12/05/2022] [Accepted: 12/07/2022] [Indexed: 01/14/2023]
Abstract
Mental disorders are a significant cause of disability worldwide. They profoundly affect individuals' well-being and impose a substantial financial burden on societies and governments. However, despite decades of extensive research, the effectiveness of current therapeutics for mental disorders is often not satisfactory or well tolerated by the patient. Moreover, most novel therapeutic candidates fail in clinical testing during the most expensive phases (II and III), which results in the withdrawal of pharma companies from investing in the field. It also brings into question the effectiveness of using animal models in preclinical studies to discover new therapeutic agents and predict their potential for treating mental illnesses in humans. Here, we focus on rodents as animal models and propose that they are essential for preclinical investigations of candidate therapeutic agents' mechanisms of action and for testing their safety and efficiency. Nevertheless, we argue that there is a need for a paradigm shift in the methodologies used to measure animal behavior in laboratory settings. Specifically, behavioral readouts obtained from short, highly controlled tests in impoverished environments and social contexts as proxies for complex human behavioral disorders might be of limited face validity. Conversely, animal models that are monitored in more naturalistic environments over long periods display complex and ethologically relevant behaviors that reflect evolutionarily conserved endophenotypes of translational value. We present how semi-natural setups in which groups of mice are individually tagged, and video recorded continuously can be attainable and affordable. Moreover, novel open-source machine-learning techniques for pose estimation enable continuous and automatic tracking of individual body parts in groups of rodents over long periods. The trajectories of each individual animal can further be subjected to supervised machine learning algorithms for automatic detection of specific behaviors (e.g., chasing, biting, or fleeing) or unsupervised automatic detection of behavioral motifs (e.g., stereotypical movements that might be harder to name or label manually). Compared to studies of animals in the wild, semi-natural environments are more compatible with neural and genetic manipulation techniques. As such, they can be used to study the neurobiological mechanisms underlying naturalistic behavior. Hence, we suggest that such a paradigm possesses the best out of classical ethology and the reductive behaviorist approach and may provide a breakthrough in discovering new efficient therapies for mental illnesses.
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Affiliation(s)
- Yair Shemesh
- Department of Brain Sciences, Weizmann Institute of Science, Rehovot, 7610001, Israel
- Department of Molecular Neuroscience, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Alon Chen
- Department of Brain Sciences, Weizmann Institute of Science, Rehovot, 7610001, Israel.
- Department of Molecular Neuroscience, Weizmann Institute of Science, Rehovot, 7610001, Israel.
- Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, 80804, Munich, Germany.
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9
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Subramaniam CB, Wardill HR, Davies MR, Heng V, Gladman MA, Bowen JM. 5-Fluorouracil Induces an Acute Reduction in Neurogenesis and Persistent Neuroinflammation in a Mouse Model of the Neuropsychological Complications of Chemotherapy. Mol Neurobiol 2023; 60:1408-1424. [PMID: 36449255 DOI: 10.1007/s12035-022-03136-3] [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: 02/08/2022] [Accepted: 11/12/2022] [Indexed: 12/05/2022]
Abstract
The neuropsychological symptoms associated with chemotherapy treatment remain a major challenge with their prevention hampered by insufficient understanding of pathophysiology. While long-term neuroimmune changes have been identified as a hallmark feature shared by neurological symptoms, the exact timeline of mechanistic events preceding neuroinflammation, and the relationship between the glial cells driving this neuroinflammatory response, remain unclear. We therefore aimed to longitudinally characterize the neuroimmunological changes following systemic 5-fluorouracil (5-FU) treatment to gain insight into the timeline of events preceding the well-documented chronic neuroinflammation seen following chemotherapy. Eighteen female C57Bl/6 mice received a single intraperitoneal dose of 5-FU and groups were killed at days 1 and 2 (acute timepoint), days 4 and 8 (subacute timepoint), and days 16 and 32 (chronic timepoint). A further six mice were administered with vehicle control with tissues collected from three mice on day 1 and day 32 of the study. The expression of key genes of interest, BCL2, BDNF, TIMP1, MMP-9, MMP-2, TNFα, IL-1β, and IL-6R were assessed using real time polymerase chain reaction. Levels of neurogenesis were determined through immunofluorescent staining of doublecortin (DCX). The density of microglia and astrocytes were assessed using immunofluorescence staining of Iba1 and GFAP respectively. 5-FU treatment caused significant decreases to DCX staining at acute timepoints (p = 0.0030) which was positively correlated with BCL2 expression levels. An increase to microglial density was observed in the prefrontal cortex (p = 0.0256), CA3 region (p = 0.0283), and dentate gyrus (p = 0.0052) of the hippocampus at acute timepoints. 5-FU caused increases to astrocyte density, across multiple brains regions, at subacute and chronic timepoints which were positively correlated with TNFα, TIMP-1, MMP-2, and IL-6R expression. This study has identified acute objective neuroinflammatory changes suggesting that the role of early intervention should be explored to prevent the development of neuropsychological deficits in the longer-term following chemotherapy.
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Affiliation(s)
- Courtney B Subramaniam
- School of Biomedicine, Adelaide Medical School, University of Adelaide, Adelaide, South Australia, Australia.
- Supportive Oncology Research Group, Precision Medicine (Cancer), South Australian Health and Medical Research Institute (SAHMRI), University of Adelaide, Adelaide, South Australia, Australia.
| | - Hannah R Wardill
- Supportive Oncology Research Group, Precision Medicine (Cancer), South Australian Health and Medical Research Institute (SAHMRI), University of Adelaide, Adelaide, South Australia, Australia
| | - Maya R Davies
- Supportive Oncology Research Group, Precision Medicine (Cancer), South Australian Health and Medical Research Institute (SAHMRI), University of Adelaide, Adelaide, South Australia, Australia
| | - Vivien Heng
- School of Biomedicine, Adelaide Medical School, University of Adelaide, Adelaide, South Australia, Australia
| | - Marc A Gladman
- School of Biomedicine, Adelaide Medical School, University of Adelaide, Adelaide, South Australia, Australia
| | - Joanne M Bowen
- School of Biomedicine, Adelaide Medical School, University of Adelaide, Adelaide, South Australia, Australia
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10
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Experimenter familiarization is a crucial prerequisite for assessing behavioral outcomes and reduces stress in mice not only under chronic pain conditions. Sci Rep 2023; 13:2289. [PMID: 36759654 PMCID: PMC9911644 DOI: 10.1038/s41598-023-29052-7] [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: 10/11/2022] [Accepted: 01/30/2023] [Indexed: 02/11/2023] Open
Abstract
Rodent behavior is affected by different environmental conditions. These do not only comprise experimental and housing conditions but also familiarization with the experimenter. However, specific effects on pain-related behavior and chronic pain conditions have not been examined. Therefore, we aimed to investigate the impact of different housing conditions, using individually ventilated and standard open top cages, inverted day-night cycles, and experimenter familiarization on male mice following peripheral neuropathy using the spared nerve injury (SNI) model. Using a multimodal approach, we evaluated evoked pain-related- using von Frey hair filaments, measured gait pattern with the CatWalk system, assessed anxiety- and depression-like behavior with the Elevated plus maze and tail suspension test, measured corticosterone metabolite levels in feces and utilized an integrative approach for relative-severity-assessment. Mechanical sensitivity differed between the cage systems and experimenter familiarization and was affected in both sham and SNI mice. Experimenter familiarization and an inverted day-night cycle reduced mechanical hypersensitivity in SNI and sham mice. SNI mice of the inverted day-night group displayed the slightest pronounced alterations in gait pattern in the Catwalk test. Anxiety-related behavior was only found in SNI mice of experimenter-familiarized mice compared to the sham controls. In addition, familiarization reduced the stress level measured by fecal corticosteroid metabolites caused by the pain and the behavioral tests. Although no environmental condition significantly modulated the severity in SNI mice, it influenced pain-affected phenotypes and is, therefore, crucial for designing and interpreting preclinical pain studies. Moreover, environmental conditions should be considered more in the reporting guidelines, described in more detail, and discussed as a potential influence on pain phenotypes.
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d'Isa R, Gerlai R. Designing animal-friendly behavioral tests for neuroscience research: The importance of an ethological approach. Front Behav Neurosci 2023; 16:1090248. [PMID: 36703720 PMCID: PMC9871504 DOI: 10.3389/fnbeh.2022.1090248] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Accepted: 12/16/2022] [Indexed: 01/12/2023] Open
Affiliation(s)
- Raffaele d'Isa
- Institute of Experimental Neurology (INSPE), Division of Neuroscience (DNS), IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Robert Gerlai
- Department of Psychology, University of Toronto Mississauga, Mississauga, ON, Canada
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12
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Mittal D, Mease R, Kuner T, Flor H, Kuner R, Andoh J. Data management strategy for a collaborative research center. Gigascience 2022; 12:giad049. [PMID: 37401720 PMCID: PMC10318494 DOI: 10.1093/gigascience/giad049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 02/20/2023] [Accepted: 06/11/2023] [Indexed: 07/05/2023] Open
Abstract
The importance of effective research data management (RDM) strategies to support the generation of Findable, Accessible, Interoperable, and Reusable (FAIR) neuroscience data grows with each advance in data acquisition techniques and research methods. To maximize the impact of diverse research strategies, multidisciplinary, large-scale neuroscience research consortia face a number of unsolved challenges in RDM. While open science principles are largely accepted, it is practically difficult for researchers to prioritize RDM over other pressing demands. The implementation of a coherent, executable RDM plan for consortia spanning animal, human, and clinical studies is becoming increasingly challenging. Here, we present an RDM strategy implemented for the Heidelberg Collaborative Research Consortium. Our consortium combines basic and clinical research in diverse populations (animals and humans) and produces highly heterogeneous and multimodal research data (e.g., neurophysiology, neuroimaging, genetics, behavior). We present a concrete strategy for initiating early-stage RDM and FAIR data generation for large-scale collaborative research consortia, with a focus on sustainable solutions that incentivize incremental RDM while respecting research-specific requirements.
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Affiliation(s)
- Deepti Mittal
- Institute of Pharmacology, Heidelberg University, 69120 Heidelberg, Germany
| | - Rebecca Mease
- Institute of Physiology and Pathophysiology, Heidelberg University, 69120 Heidelberg, Germany
| | - Thomas Kuner
- Institute for Anatomy and Cell Biology, Heidelberg University, 69120 Mannheim, Germany
| | - Herta Flor
- Department of Cognitive and Clinical Neuroscience, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, 68159 Mannheim, Germany
| | - Rohini Kuner
- Institute of Pharmacology, Heidelberg University, 69120 Heidelberg, Germany
| | - Jamila Andoh
- Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, 68159 Mannheim, Germany
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Prolonged contextual fear memory in AMPA receptor palmitoylation-deficient mice. Neuropsychopharmacology 2022; 47:2150-2159. [PMID: 35618841 PMCID: PMC9556755 DOI: 10.1038/s41386-022-01347-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 04/26/2022] [Accepted: 05/07/2022] [Indexed: 11/24/2022]
Abstract
Long-lasting fear-related disorders depend on the excessive retention of traumatic fear memory. We previously showed that the palmitoylation-dependent removal of synaptic α-amino-3-hydroxy-5-methyl-4-isoxazole propionate (AMPA) receptors prevents hyperexcitation-based epileptic seizures and that AMPA receptor palmitoylation maintains neural network stability. In this study, AMPA receptor subunit GluA1 C-terminal palmitoylation-deficient (GluA1C811S) mice were subjected to comprehensive behavioral battery tests to further examine whether the mutation causes other neuropsychiatric disease-like symptoms. The behavioral analyses revealed that palmitoylation-deficiency in GluA1 is responsible for characteristic prolonged contextual fear memory formation, whereas GluA1C811S mice showed no impairment of anxiety-like behaviors at the basal state. In addition, fear generalization gradually increased in these mutant mice without affecting their cued fear. Furthermore, fear extinction training by repeated exposure of mice to conditioned stimuli had little effect on GluA1C811S mice, which is in line with augmentation of synaptic transmission in pyramidal neurons in the basolateral amygdala. In contrast, locomotion, sociability, depression-related behaviors, and spatial learning and memory were unaffected by the GluA1 non-palmitoylation mutation. These results indicate that impairment of AMPA receptor palmitoylation specifically causes posttraumatic stress disorder (PTSD)-like symptoms.
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14
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Díaz-García D, Ferrer-Donato Á, Méndez-Arriaga JM, Cabrera-Pinto M, Díaz-Sánchez M, Prashar S, Fernandez-Martos CM, Gómez-Ruiz S. Design of Mesoporous Silica Nanoparticles for the Treatment of Amyotrophic Lateral Sclerosis (ALS) with a Therapeutic Cocktail Based on Leptin and Pioglitazone. ACS Biomater Sci Eng 2022; 8:4838-4849. [PMID: 36240025 PMCID: PMC9667463 DOI: 10.1021/acsbiomaterials.2c00865] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
Amyotrophic lateral sclerosis (ALS) is a devasting neurodegenerative
disease with no cure to date. Therapeutic agents used to treat ALS
are very limited, although combined therapies may offer a more effective
treatment strategy. Herein, we have studied the potential of nanomedicine
to prepare a single platform based on mesoporous silica nanoparticles
(MSNs) for the treatment of an ALS animal model with a cocktail of
agents such as leptin (neuroprotective) and pioglitazone (anti-inflammatory),
which have already demonstrated promising therapeutic ability in other
neurodegenerative diseases. Our goal is to study the potential of
functionalized mesoporous materials as therapeutic agents against
ALS using MSNs as nanocarriers for the proposed drug cocktail leptin/pioglitazone
(MSN-LEP-PIO). The nanostructured materials have been
characterized by different techniques, which confirmed the incorporation
of both agents in the nanosystem. Subsequently, the effect, in vivo, of the proposed drug cocktail, MSN-LEP-PIO, was used in the murine model of TDP-43 proteinopathy (TDP-43A315T mice). Body weight loss was studied, and using the rotarod
test, motor performance was assessed, observing a continuous reduction
in body weight and motor coordination in TDP-43A315T mice
and wild-type (WT) mice. Nevertheless, the disease progression was
slower and showed significant improvements in motor performance, indicating
that TDP-43A315T mice treated with MSN-LEP-PIO seem to have less energy demand in the late stage of the symptoms
of ALS. Collectively, these results seem to indicate the efficiency
of the systems in vivo and the usefulness of their
use in neurodegenerative models, including ALS.
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Affiliation(s)
- Diana Díaz-García
- COMET-NANO Group, Departamento de Biología y Geología, Física y Química Inorgánica, E.S.C.E.T., Universidad Rey Juan Carlos, Calle Tulipán s/n, E-28933 Móstoles, Madrid, Spain
| | - Águeda Ferrer-Donato
- Neurometabolism Group, Research Unit of the National Hospital of Paraplegics (UDI-HNP), Finca La Peraleda s/n, 45071 Toledo, Spain
| | - José M Méndez-Arriaga
- COMET-NANO Group, Departamento de Biología y Geología, Física y Química Inorgánica, E.S.C.E.T., Universidad Rey Juan Carlos, Calle Tulipán s/n, E-28933 Móstoles, Madrid, Spain
| | - Marta Cabrera-Pinto
- Neurometabolism Group, Research Unit of the National Hospital of Paraplegics (UDI-HNP), Finca La Peraleda s/n, 45071 Toledo, Spain
| | - Miguel Díaz-Sánchez
- COMET-NANO Group, Departamento de Biología y Geología, Física y Química Inorgánica, E.S.C.E.T., Universidad Rey Juan Carlos, Calle Tulipán s/n, E-28933 Móstoles, Madrid, Spain
| | - Sanjiv Prashar
- COMET-NANO Group, Departamento de Biología y Geología, Física y Química Inorgánica, E.S.C.E.T., Universidad Rey Juan Carlos, Calle Tulipán s/n, E-28933 Móstoles, Madrid, Spain
| | - Carmen M Fernandez-Martos
- Neurometabolism Group, Research Unit of the National Hospital of Paraplegics (UDI-HNP), Finca La Peraleda s/n, 45071 Toledo, Spain.,Wicking Dementia Research and Education Centre, College of Health and Medicine, University of Tasmania, Hobart, Tasmania 7005, Australia
| | - Santiago Gómez-Ruiz
- COMET-NANO Group, Departamento de Biología y Geología, Física y Química Inorgánica, E.S.C.E.T., Universidad Rey Juan Carlos, Calle Tulipán s/n, E-28933 Móstoles, Madrid, Spain
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15
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Khademullah CS, De Koninck Y. A novel assessment of fine-motor function reveals early hindlimb and detectable forelimb deficits in an experimental model of ALS. Sci Rep 2022; 12:17010. [PMID: 36220871 PMCID: PMC9553953 DOI: 10.1038/s41598-022-20333-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 09/12/2022] [Indexed: 12/29/2022] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disorder associated with the loss of cortical and spinal motor neurons (MNs) and muscle degeneration (Kiernan et al. in Lancet 377:942-955, 2011). In the preclinical setting, functional tests that can detect early changes in motor function in rodent models of ALS are critical to understanding the etiology of the disease and treatment development. Here, we established a string-pulling paradigm that can detect forelimb and hindlimb motor deficits in the SOD1 mouse model of ALS earlier than traditional motor performance tasks. Additionally, our findings indicate that early loss of forelimb and hindlimb function is correlated with cortical and spinal MN loss, respectively. This task is not only ecological, low-cost, efficient, and non-onerous, it also requires little animal handling and reduces the stress placed on the animal. It has long been a concern in the field that the SOD1 mouse does not display forelimb motor deficits and does not give researchers a complete picture of the disease. Here, we provide evidence that the SOD1 model does in fact develop early forelimb motor deficits due to the task's ability to assess fine-motor function, reconciling this model with the various clinical presentation of ALS. Taken together, the string-pulling paradigm may provide novel insights into the pathogenesis of ALS, offer nuanced evaluation of prospective treatments, and has high translational potential to the clinic.
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Affiliation(s)
- C. Sahara Khademullah
- grid.23856.3a0000 0004 1936 8390CERVO Brain Research Centre, Université Laval, 2601 Chemin de la Canardière, Quebec, QC G1J 2G3 Canada
| | - Yves De Koninck
- grid.23856.3a0000 0004 1936 8390CERVO Brain Research Centre, Université Laval, 2601 Chemin de la Canardière, Quebec, QC G1J 2G3 Canada
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16
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New Properties of a Well-Known Antioxidant: Pleiotropic Effects of Human Lactoferrin in Mice Exposed to Gamma Irradiation in a Sublethal Dose. Antioxidants (Basel) 2022; 11:antiox11091833. [PMID: 36139907 PMCID: PMC9495689 DOI: 10.3390/antiox11091833] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 09/12/2022] [Accepted: 09/15/2022] [Indexed: 11/28/2022] Open
Abstract
We studied the effects of human lactoferrin (hLf), a multifunctional protein from the transferrin family, on integral (survival, lifespan during the experiment, body weight, behavior, subfractional compositions of blood serum) and systemic (hemoglobin level, leukocyte number, differential leukocyte count, histological structure of the liver and spleen) parameters of the body in mice after acute gamma irradiation in a sublethal dose. The experiments were performed on male C57BL/6 mice. The mice in the experimental groups were exposed to whole-body gamma radiation in a dose of 7.5 Gy from a 60Co source. Immediately after irradiation and 24 h after it, some animals received an intraperitoneal injection of hLf (4 mg/mouse). Single or repeated administration of hLf had a positive pleiotropic effect on irradiated animals: animal survival increased from 28% to 78%, and the mean life expectancy during the experiment (30 days) increased from 16 to 26 days. A compensatory effect of hLf on radiation-induced body weight loss, changes in homeostasis parameters, and a protective effect on the structural organization of the spleen were demonstrated. These data indicate that Lf has potential as a means of early therapy after radiation exposure.
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17
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Mabrouk M, El Ayed M, Démosthènes A, Aissouni Y, Aouani E, Daulhac-Terrail L, Mokni M, Bégou M. Antioxidant effect of grape seed extract corrects experimental autoimmune encephalomyelitis behavioral dysfunctions, demyelination, and glial activation. Front Immunol 2022; 13:960355. [PMID: 36059517 PMCID: PMC9428676 DOI: 10.3389/fimmu.2022.960355] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 07/15/2022] [Indexed: 12/01/2022] Open
Abstract
Background and purpose Multiple sclerosis (MS), a multifactorial autoimmune disease of the central nervous system (CNS), is characterized by demyelination and chronic inflammation, as well as axonal and neuronal loss. There is no cure for MS, and despite a significant improvement in the therapeutic management of patients during the last 20 years, some symptoms are still resistant to treatment, and the evolution of the disease to progressive form seems still ineluctable. The etiology of MS is complex and still not fully understood. However, inflammation is a major driver of physiopathology and oxidative stress contributes to CNS lesions and promotes existing inflammatory response. Plant polyphenols are endowed with many therapeutic benefits through alleviating oxidative stress and inflammation, thus providing neuroprotection in MS. We presently evaluated the curative effect of grape seed extract (GSE) in an experimental autoimmune encephalomyelitis (EAE) mouse model of MS. Experimental approach Six-week-old C57Bl/6J females were subjected to the EAE paradigm (using myelin oligodendrocyte glycoprotein peptide fragment (35-55), complete Freund’s adjuvant, and pertussis toxin) and then chronically treated with GSE from day 10 to day 30 post-induction. Clinical score and body weight were monitored daily, while evaluation of sensitive, motor, cognitive, and anxiety-related behaviors was performed weekly. Then, the GSE effect was evaluated on whole brain and spinal cord samples through the evaluation of oxidative stress damage, antioxidant capacities, myelin alteration, astroglial and microglial proliferation, and sirtuin expression. Key results Grape seed extract curative chronic treatment corrected the clinical course of EAE, as well as the mechanical hypersensitivity, and avoided the development of EAE mouse thermal cold allodynia. The neuropathological evaluation showed that GSE reduced oxidative stress in the brain and spinal cord by decreasing the lipid and protein oxidation through correction of the three main antioxidant enzyme activities, namely, superoxide dismutase, catalase, and glutathione peroxidase, as well as restoring normal myelin protein expression and correcting microglial and astroglial protein overexpression and sirtuin downregulation. Conclusion and implications These data strongly support GSE as an effective therapeutic approach in MS treatment.
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Affiliation(s)
- Maha Mabrouk
- Université Clermont Auvergne, INSERM 1107, Neuro-Dol, Clermont-Ferrand, France
- Université Clermont Auvergne, Faculté de Pharmacie, Clermont-Ferrand, France
- Laboratoire de substances bioactives, Centre de Biotechnologie, Technopole de Borj Cedria, Hammam-Lif, Tunisia
- Faculté des Sciences de Tunis (FST), Université de Tunis el Manar (UTM), Tunis, Tunisia
| | - Mohamed El Ayed
- Laboratoire de substances bioactives, Centre de Biotechnologie, Technopole de Borj Cedria, Hammam-Lif, Tunisia
- Faculté des Sciences de Tunis (FST), Université de Tunis el Manar (UTM), Tunis, Tunisia
| | - Amélie Démosthènes
- Université Clermont Auvergne, INSERM 1107, Neuro-Dol, Clermont-Ferrand, France
- Université Clermont Auvergne, Faculté de Pharmacie, Clermont-Ferrand, France
| | - Youssef Aissouni
- Université Clermont Auvergne, INSERM 1107, Neuro-Dol, Clermont-Ferrand, France
- Université Clermont Auvergne, Faculté de Pharmacie, Clermont-Ferrand, France
| | - Ezzedine Aouani
- Laboratoire de substances bioactives, Centre de Biotechnologie, Technopole de Borj Cedria, Hammam-Lif, Tunisia
- Faculté des Sciences de Tunis (FST), Université de Tunis el Manar (UTM), Tunis, Tunisia
| | - Laurence Daulhac-Terrail
- Université Clermont Auvergne, INSERM 1107, Neuro-Dol, Clermont-Ferrand, France
- Université Clermont Auvergne, Faculté de Pharmacie, Clermont-Ferrand, France
| | - Meherzia Mokni
- Laboratoire de substances bioactives, Centre de Biotechnologie, Technopole de Borj Cedria, Hammam-Lif, Tunisia
- Faculté des Sciences de Tunis (FST), Université de Tunis el Manar (UTM), Tunis, Tunisia
| | - Mélina Bégou
- Université Clermont Auvergne, INSERM 1107, Neuro-Dol, Clermont-Ferrand, France
- Université Clermont Auvergne, Faculté de Pharmacie, Clermont-Ferrand, France
- *Correspondence: Mélina Bégou,
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Affiliation(s)
- Alicja Puścian
- Nencki-EMBL Partnership for Neural Plasticity and Brain Disorders – BRAINCITY, Nencki Institute of Experimental Biology of Polish Academy of Sciences, Pasteur 3 Street, 02-093 Warsaw, Poland
| | - Ewelina Knapska
- Nencki-EMBL Partnership for Neural Plasticity and Brain Disorders – BRAINCITY, Nencki Institute of Experimental Biology of Polish Academy of Sciences, Pasteur 3 Street, 02-093 Warsaw, Poland
- Corresponding author
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Ueno H, Takahashi Y, Murakami S, Wani K, Matsumoto Y, Okamoto M, Ishihara T. Effect of simultaneous testing of two mice in the tail suspension test and forced swim test. Sci Rep 2022; 12:9224. [PMID: 35654971 PMCID: PMC9163059 DOI: 10.1038/s41598-022-12986-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 05/19/2022] [Indexed: 11/30/2022] Open
Abstract
In mouse studies, the results of behavioural experiments are greatly affected by differences in the experimental environment and handling methods. The Porsolt forced swim test and tail suspension test are widely used to evaluate predictive models of depression-like behaviour in mice. It has not been clarified how the results of these tests are affected by testing single or multiple mice simultaneously. Therefore, this study evaluated the differences between testing two mice simultaneously or separately. To investigate the effect of testing multiple mice simultaneously, the Porsolt forced swim test and tail suspension test were performed in three patterns: (1) testing with an opaque partition between two mice, (2) testing without a partition between two mice, and (3) testing a single mouse. In the Porsolt forced swim test, the mice tested simultaneously without a partition demonstrated increased immobility time as compared to mice tested alone. No difference in immobility time was observed between the three groups in the tail suspension test. Our results showed that the environment of behavioural experiments investigating depression-like behaviour in mice can cause a difference in depression-like behaviour. The results of this experiment indicated that it is necessary to describe the method used for behavioural testing in detail.
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Affiliation(s)
- Hiroshi Ueno
- Department of Medical Technology, Kawasaki University of Medical Welfare, 288, Matsushima, Kurashiki, Okayama, 701-0193, Japan.
| | - Yu Takahashi
- Department of Psychiatry, Kawasaki Medical School, Kurashiki, 701-0192, Japan
| | - Shinji Murakami
- Department of Psychiatry, Kawasaki Medical School, Kurashiki, 701-0192, Japan
| | - Kenta Wani
- Department of Psychiatry, Kawasaki Medical School, Kurashiki, 701-0192, Japan
| | - Yosuke Matsumoto
- Department of Neuropsychiatry, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, 700-8558, Japan
| | - Motoi Okamoto
- Department of Medical Technology, Graduate School of Health Sciences, Okayama University, Okayama, 700-8558, Japan
| | - Takeshi Ishihara
- Department of Psychiatry, Kawasaki Medical School, Kurashiki, 701-0192, Japan
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Byeon HR, Jang SY, Lee Y, Kim D, Hong MG, Lee D, Shin JH, Seo JG. New Strains of Akkermansia muciniphila and Faecalibacterium prausnitzii are Effective for Improving the Muscle Strength of Mice with Immobilization-Induced Muscular Atrophy. J Med Food 2022; 25:565-575. [PMID: 35708632 DOI: 10.1089/jmf.2021.k.0148] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Muscular atrophy is a muscle disease in which muscle mass and strength decrease due to aging, injury, metabolic disorders, or chronic conditions. Proteins in muscle tissue are degraded by the ubiquitin-proteasome pathway, and atrophy accelerates this pathway. Akkermansia muciniphila and Faecalibacterium prausnitzii strains are effective agents against metabolic and inflammatory diseases in next-generation probiotic research. In this study, we evaluated the efficacy of A. muciniphila strain EB-AMDK19 and F. prausnitzii strain EB-FPDK11 in a mouse model of muscular atrophy, since atrophy inhibits energy metabolism and immune activation. After oral administration of each strain for 4 weeks, the hind legs of the mice were fixed with a plaster cast to immobilize them for a week. As a result, the administration of EB-AMDK19 and EB-FPDK11 strains improved grip strength but did not increase muscle mass. At the molecular level, A. muciniphila and F. prausnitzii treatments decreased the expression levels of ubiquitin-proteasome genes, atrogin-1, MuRF, and cathepsin L. They increased the expression level of the mitochondrial biogenesis regulatory gene, PGC-1α. The effect of the strains was confirmed by a decrease in myostatin. Furthermore, A. muciniphila and F. prausnitzii modulated the immune function by enhancing ZO-1 and inhibiting IL-6. In particular, EB-AMDK19 promoted the expression of IL-10, an anti-inflammatory cytokine. These results suggest that A. muciniphila and F. prausnitzii may have beneficial effects on muscular atrophy, verified by newly isolated EB-AMDK19 and EB-FPDK11 as potential next-generation probiotics.
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Affiliation(s)
- Hye Rim Byeon
- Efficacy Assessment Team, R&D Center, Enterobiome Inc., Siksa-dong, Ilsandong-gu, Goyang-si, Korea
| | - Seo-Yul Jang
- Efficacy Assessment Team, R&D Center, Enterobiome Inc., Siksa-dong, Ilsandong-gu, Goyang-si, Korea
| | - Yoonmi Lee
- Efficacy Assessment Team, R&D Center, Enterobiome Inc., Siksa-dong, Ilsandong-gu, Goyang-si, Korea
| | - Dohak Kim
- Strain Development Team, R&D Center, Enterobiome Inc., Siksa-dong, Ilsandong-gu, Goyang-si, Korea
| | - Moon-Gi Hong
- Strain Development Team, R&D Center, Enterobiome Inc., Siksa-dong, Ilsandong-gu, Goyang-si, Korea
| | - Dokyung Lee
- Strain Development Team, R&D Center, Enterobiome Inc., Siksa-dong, Ilsandong-gu, Goyang-si, Korea
| | - Joo-Hyun Shin
- R&D Center, Enterobiome Inc., Siksa-dong, Ilsandong-gu, Goyang-si, Korea
| | - Jae-Gu Seo
- R&D Center, Enterobiome Inc., Siksa-dong, Ilsandong-gu, Goyang-si, Korea
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21
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MCC950 ameliorates the dementia symptom at the early age of line M83 mouse and reduces hippocampal α-synuclein accumulation. Biochem Biophys Res Commun 2022; 611:23-30. [DOI: 10.1016/j.bbrc.2022.04.076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 04/17/2022] [Indexed: 11/19/2022]
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22
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Gerbatin RR, Augusto J, Boutouil H, Reschke CR, Henshall DC. Life-span characterization of epilepsy and comorbidities in Dravet syndrome mice carrying a targeted deletion of exon 1 of the Scn1a gene. Exp Neurol 2022; 354:114090. [PMID: 35487274 DOI: 10.1016/j.expneurol.2022.114090] [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: 10/29/2021] [Revised: 04/06/2022] [Accepted: 04/21/2022] [Indexed: 11/17/2022]
Abstract
OBJECTIVE Dravet Syndrome (DS) is a catastrophic form of paediatric epilepsy associated with multiple comorbidities mainly caused by mutations in the SCN1A gene. DS progresses in three different phases termed febrile, worsening and stabilization stage. Mice that are haploinsufficient for Scn1a faithfully model each stage of DS, although various aspects have not been fully described, including the temporal appearance and sex differences of the epilepsy and comorbidities. The aim of the present study was to investigate the epilepsy landscape according to the progression of DS and the long-term co-morbidities in the Scn1a(+/-)tm1Kea DS mouse line that are not fully understood yet. METHODS Male and female F1.Scn1a(+/+) and F1.Scn1a(+/-)tm1Kea mice were assessed in the hyperthermia model or monitored by video electroencephalogram (vEEG) and wireless video-EEG according to the respective stage of DS. Long-term comorbidities were investigated through a battery of behaviour assessments in ~6 month-old mice. RESULTS At P18, F1.Scn1a(+/-)tm1Kea mice showed the expected sensitivity to hyperthermia-induced seizures. Between P21 and P28, EEG recordings in F1.Scn1a(+/-)tm1Kea mice combined with video monitoring revealed a high frequency of SRS and SUDEP. Power spectral analyses of background EEG activity also revealed that low EEG power in multiple frequency bands was associated with SUDEP risk in F1.Scn1a(+/-)tm1Kea mice during the worsening stage of DS. Later, SRS and SUDEP rates stabilized and then declined in F1.Scn1a(+/-)tm1kea mice. Incidence of SRS ending with death in F1.Scn1a(+/-)tm1kea mice displayed variations with the time of day and sex, with female mice displaying higher numbers of severe seizures resulting in greater SUDEP risk. F1.Scn1a(+/-)tm1kea mice ~6 month-old displayed fewer behavioural impairments than expected including hyperactivity, impaired exploratory behaviour and poor nest building performance. SIGNIFICANCE These results reveal new features of this model that will optimize use and selection of phenotype assays for future studies on the mechanisms, diagnosis, and treatment of DS.
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Affiliation(s)
- Rogério R Gerbatin
- Department of Physiology and Medical Physics, RCSI University of Medicine and Health Sciences, Dublin, Ireland; FutureNeuro SFI Research Centre, RCSI University of Medicine and Health Sciences, Dublin, Ireland
| | - Joana Augusto
- Department of Physiology, Faculty of Medicine, Trinity College Dublin, Dublin, Ireland
| | - Halima Boutouil
- School of Mechanical and Manufacturing Engineering, Dublin City University, Dublin, Ireland
| | - Cristina R Reschke
- Department of Physiology and Medical Physics, RCSI University of Medicine and Health Sciences, Dublin, Ireland; FutureNeuro SFI Research Centre, RCSI University of Medicine and Health Sciences, Dublin, Ireland; School of Pharmacy and Biomolecular Sciences, RCSI University of Medicine and Health Sciences, Dublin, Ireland
| | - David C Henshall
- Department of Physiology and Medical Physics, RCSI University of Medicine and Health Sciences, Dublin, Ireland; FutureNeuro SFI Research Centre, RCSI University of Medicine and Health Sciences, Dublin, Ireland.
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Chen Z, Raj A, Prateek GV, Di Francesco A, Liu J, Keyes BE, Kolumam G, Jojic V, Freund A. Automated, high-dimensional evaluation of physiological aging and resilience in outbred mice. eLife 2022; 11:e72664. [PMID: 35404230 PMCID: PMC9000950 DOI: 10.7554/elife.72664] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 03/29/2022] [Indexed: 02/06/2023] Open
Abstract
Behavior and physiology are essential readouts in many studies but have not benefited from the high-dimensional data revolution that has transformed molecular and cellular phenotyping. To address this, we developed an approach that combines commercially available automated phenotyping hardware with a systems biology analysis pipeline to generate a high-dimensional readout of mouse behavior/physiology, as well as intuitive and health-relevant summary statistics (resilience and biological age). We used this platform to longitudinally evaluate aging in hundreds of outbred mice across an age range from 3 months to 3.4 years. In contrast to the assumption that aging can only be measured at the limits of animal ability via challenge-based tasks, we observed widespread physiological and behavioral aging starting in early life. Using network connectivity analysis, we found that organism-level resilience exhibited an accelerating decline with age that was distinct from the trajectory of individual phenotypes. We developed a method, Combined Aging and Survival Prediction of Aging Rate (CASPAR), for jointly predicting chronological age and survival time and showed that the resulting model is able to predict both variables simultaneously, a behavior that is not captured by separate age and mortality prediction models. This study provides a uniquely high-resolution view of physiological aging in mice and demonstrates that systems-level analysis of physiology provides insights not captured by individual phenotypes. The approach described here allows aging, and other processes that affect behavior and physiology, to be studied with improved throughput, resolution, and phenotypic scope.
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Affiliation(s)
- Zhenghao Chen
- Calico Life Sciences LLC, South San FranciscoSouth San FranciscoUnited States
| | - Anil Raj
- Calico Life Sciences LLC, South San FranciscoSouth San FranciscoUnited States
| | - GV Prateek
- Calico Life Sciences LLC, South San FranciscoSouth San FranciscoUnited States
| | - Andrea Di Francesco
- Calico Life Sciences LLC, South San FranciscoSouth San FranciscoUnited States
| | - Justin Liu
- Calico Life Sciences LLC, South San FranciscoSouth San FranciscoUnited States
| | - Brice E Keyes
- Calico Life Sciences LLC, South San FranciscoSouth San FranciscoUnited States
| | - Ganesh Kolumam
- Calico Life Sciences LLC, South San FranciscoSouth San FranciscoUnited States
| | - Vladimir Jojic
- Calico Life Sciences LLC, South San FranciscoSouth San FranciscoUnited States
| | - Adam Freund
- Calico Life Sciences LLC, South San FranciscoSouth San FranciscoUnited States
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24
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Jamison CN, Dayton RD, Latimer B, McKinney MP, Mitchell HG, McMartin KE. Diethylene glycol produces nephrotoxic and neurotoxic effects in female rats. Clin Toxicol (Phila) 2022; 60:324-331. [PMID: 34278906 PMCID: PMC9661884 DOI: 10.1080/15563650.2021.1953049] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
CONTEXT Diethylene glycol (DEG) is an organic compound found in household products but also as a counterfeit solvent in medicines. DEG poisonings are characterized by acute kidney injury (AKI) and by neurological sequelae such as decreased reflexes or face and limb weakness. Previous studies in male rats have demonstrated that neurotoxic effects develop only with the establishment of AKI, but the dose sensitivity of females to DEG toxicity is unknown. OBJECTIVES Assessing whether subacute administration of DEG in female rats would delineate any sex-differences in neuropathy or in kidney injury. METHODS Female Wistar-Han rats were orally administered doses of 4 - 6 g/kg DEG every 12 h and monitored for 7 days. Urine was collected every 12 h and endpoint blood and cerebrospinal fluid (CSF) were collected for renal plasma parameters and total protein estimation, respectively. Motor function tests were conducted before and after treatment. Kidney and brain tissue were analyzed for metabolite content. RESULTS Of 12 animals treated with DEG, 3 developed AKI as confirmed by increased BUN and creatinine concentrations. Renal and brain DGA contents were increased in animals that developed AKI compared to animals without AKI. Total CSF protein content in animals with AKI was markedly elevated compared to control and to treated animals without AKI. Decreases in forelimb grip strength and in locomotor and rearing activity were observed in animals with AKI compared to control and to animals without AKI. DISCUSSION Repeated dosing with DEG in a female model produced nephrotoxic effects at a dose similar to that in males. The decrease in motor function and increase in CSF protein were only present in females that developed AKI. However, kidney and neurologic effects were assessed only at the end of the treatments, thus limiting determination of which effect occurs first. Limb function and coordination were measured globally and more sensitive tests such as nerve conduction studies might offer a detailed neurotoxicity assessment of the effects of DEG. CONCLUSIONS These studies show that DEG toxicity does not appear to be sex-specific and that, in males and females, neurological symptoms are present only when DGA accumulation and kidney injury also occur.
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Affiliation(s)
- Courtney N. Jamison
- Department of Pharmacology, Toxicology and Neuroscience, LSU Health Sciences Center, Shreveport, LA, USA
| | - Robert D. Dayton
- Department of Pharmacology, Toxicology and Neuroscience, LSU Health Sciences Center, Shreveport, LA, USA
| | - Brian Latimer
- Department of Pharmacology, Toxicology and Neuroscience, LSU Health Sciences Center, Shreveport, LA, USA
| | - Mary P. McKinney
- Department of Pharmacology, Toxicology and Neuroscience, LSU Health Sciences Center, Shreveport, LA, USA
| | - Hannah G. Mitchell
- Department of Pharmacology, Toxicology and Neuroscience, LSU Health Sciences Center, Shreveport, LA, USA
| | - Kenneth E. McMartin
- Department of Pharmacology, Toxicology and Neuroscience, LSU Health Sciences Center, Shreveport, LA, USA
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25
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Riet F, Mittelhaeuser C, Lux A, Bour R, Selloum M, Sorg T, Herault Y, Meziane H. Behavioral Testing Design for Evaluation of Cognitive Disabilities. Curr Protoc 2022; 2:e382. [PMID: 35195951 DOI: 10.1002/cpz1.382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Intellectual disabilities (ID) constitute a class of human neurodevelopmental diseases and are a major medical and socioeconomic problem owing to their high incidence and enormous burden to the families of those affected. In the past three decades, mutant mouse technologies have provided powerful tools for elucidating the pathophysiological mechanisms underlying behavioral and developmental alterations related to IDs and for addressing new therapeutic strategies, and major progress has been made revealing previously unidentified genes involved in ID. However, the pathological hallmarks of IDs are very heterogeneous in regard to both the functional deficits observed and the severity of the phenotype, even within the same mutation types. For this reason, an appropriate experimental design is required to reduce the risk of false negatives and positives in animal functional genomic studies. This experimental design should address functions important to evaluate, tests, and the appropriate workflow. Here, we propose an extensive behavioral screen with detailed protocols, which was successfully used in a systematic mouse functional genomic approach to gain pathway-based insights into mechanisms leading to cognitive dysfunction in humans. © 2022 Wiley Periodicals LLC. Basic Protocol 1: Assessment of circadian activity and ingestive behavior Basic Protocol 2: Assessment of neurological reflexes and motor abilities using the grip and rotarod tests Basic Protocol 3: Evaluation of anxiety-related behavior using the elevated plus maze Basic Protocol 4: Evaluation of recognition memory using the object recognition task Basic Protocol 5: Evaluation of social behavior using the social recognition test Basic Protocol 6: Evaluation of working memory using the Y-maze spontaneous alternation test Basic Protocol 7: Evaluation of emotional learning and memory using the fear conditioning test.
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Affiliation(s)
- Fabrice Riet
- Université de Strasbourg, CNRS, INSERM, CELPHEDIA, PHENOMIN, Institut Clinique de la Souris (ICS), Illkirch, France
| | - Christophe Mittelhaeuser
- Université de Strasbourg, CNRS, INSERM, CELPHEDIA, PHENOMIN, Institut Clinique de la Souris (ICS), Illkirch, France
| | - Aline Lux
- Université de Strasbourg, CNRS, INSERM, CELPHEDIA, PHENOMIN, Institut Clinique de la Souris (ICS), Illkirch, France
| | - Raphael Bour
- Université de Strasbourg, CNRS, INSERM, CELPHEDIA, PHENOMIN, Institut Clinique de la Souris (ICS), Illkirch, France
| | - Mohammed Selloum
- Université de Strasbourg, CNRS, INSERM, CELPHEDIA, PHENOMIN, Institut Clinique de la Souris (ICS), Illkirch, France
| | - Tania Sorg
- Université de Strasbourg, CNRS, INSERM, CELPHEDIA, PHENOMIN, Institut Clinique de la Souris (ICS), Illkirch, France
| | - Yann Herault
- Université de Strasbourg, CNRS, INSERM, CELPHEDIA, PHENOMIN, Institut Clinique de la Souris (ICS), Illkirch, France.,Université de Strasbourg, CNRS, INSERM, Institut de Génétique et de Biologie Moléculaire et Cellulaire, IGBMC, Illkirch, France
| | - Hamid Meziane
- Université de Strasbourg, CNRS, INSERM, CELPHEDIA, PHENOMIN, Institut Clinique de la Souris (ICS), Illkirch, France
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26
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Nigri M, Åhlgren J, Wolfer DP, Voikar V. Role of Environment and Experimenter in Reproducibility of Behavioral Studies With Laboratory Mice. Front Behav Neurosci 2022; 16:835444. [PMID: 35250504 PMCID: PMC8895324 DOI: 10.3389/fnbeh.2022.835444] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 01/26/2022] [Indexed: 11/13/2022] Open
Abstract
Behavioral phenotyping of mice has received a great deal of attention during the past three decades. However, there is still a pressing need to understand the variability caused by environmental and biological factors, human interference, and poorly standardized experimental protocols. The inconsistency of results is often attributed to the inter-individual difference between the experimenters and environmental conditions. The present work aims to dissect the combined influence of the experimenter and the environment on the detection of behavioral traits in two inbred strains most commonly used in behavioral genetics due to their contrasting phenotypes, the C57BL/6J and DBA/2J mice. To this purpose, the elevated O-maze, the open field with object, the accelerating rotarod and the Barnes maze tests were performed by two experimenters in two diverse laboratory environments. Our findings confirm the well-characterized behavioral differences between these strains in exploratory behavior, motor performance, learning and memory. Moreover, the results demonstrate how the experimenter and the environment influence the behavioral tests with a variable-dependent effect, often with mutually exclusive contributions. In this context, our study highlights how both the experimenter and the environment can have an impact on the strain effect size without altering the direction of the conclusions. Importantly, the general agreement on the results is reached by converging evidence from multiple measures addressing the same trait. In conclusion, the present work elucidates the contribution of both the experimenter and the laboratory environment in the intricate field of reproducibility in mouse behavioral phenotyping.
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Affiliation(s)
- Martina Nigri
- Faculty of Medicine, Institute of Anatomy, University of Zurich, Zurich, Switzerland
- Department of Health Sciences and Technology, Institute of Human Movement Sciences and Sport, ETH Zürich, Zurich, Switzerland
- *Correspondence: Martina Nigri,
| | - Johanna Åhlgren
- Laboratory Animal Center, HiLIFE, University of Helsinki, Helsinki, Finland
| | - David P. Wolfer
- Faculty of Medicine, Institute of Anatomy, University of Zurich, Zurich, Switzerland
- Department of Health Sciences and Technology, Institute of Human Movement Sciences and Sport, ETH Zürich, Zurich, Switzerland
| | - Vootele Voikar
- Laboratory Animal Center, HiLIFE, University of Helsinki, Helsinki, Finland
- Neuroscience Center, HiLIFE, University of Helsinki, Helsinki, Finland
- Vootele Voikar,
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27
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Démosthènes A, Sion B, Giraudet F, Moisset X, Daulhac L, Eschalier A, Bégou M. In-Depth Characterization of Somatic and Orofacial Sensitive Dysfunctions and Interfering-Symptoms in a Relapsing-Remitting Experimental Autoimmune Encephalomyelitis Mouse Model. Front Neurol 2022; 12:789432. [PMID: 35111128 PMCID: PMC8801881 DOI: 10.3389/fneur.2021.789432] [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: 10/04/2021] [Accepted: 12/16/2021] [Indexed: 11/23/2022] Open
Abstract
Among the many symptoms (motor, sensory, and cognitive) associated with multiple sclerosis (MS), chronic pain is a common disabling condition. In particular, neuropathic pain symptoms are very prevalent and debilitating, even in early stages of the disease. Unfortunately, chronic pain still lacks efficient therapeutic agents. Progress is needed (i) clinically by better characterizing pain symptoms in MS and understanding the underlying mechanisms, and (ii) preclinically by developing a more closely dedicated model to identify new therapeutic targets and evaluate new drugs. In this setting, new variants of experimental autoimmune encephalomyelitis (EAE) are currently developed in mice to exhibit less severe motor impairments, thereby avoiding confounding factors in assessing pain behaviors over the disease course. Among these, the optimized relapsing-remitting EAE (QuilA-EAE) mouse model, induced using myelin oligodendrocyte glycoprotein peptide fragment (35–55), pertussis toxin, and quillaja bark saponin, seems very promising. Our study sought (i) to better define sensitive dysfunctions and (ii) to extend behavioral characterization to interfering symptoms often associated with pain during MS, such as mood disturbances, fatigue, and cognitive impairment, in this optimized QuilA-EAE model. We made an in-depth characterization of this optimized QuilA-EAE model, describing for the first time somatic thermal hyperalgesia associated with mechanical and cold allodynia. Evaluation of orofacial pain sensitivity showed no mechanical or thermal allodynia. Detailed evaluation of motor behaviors highlighted slight defects in fine motor coordination in the QuilA-EAE mice but without impact on pain evaluation. Finally, no anxiety-related or cognitive impairment was observed during the peak of sensitive symptoms. Pharmacologically, as previously described, we found that pregabalin, a treatment commonly used in neuropathic pain patients, induced an analgesic effect on mechanical allodynia. In addition, we showed an anti-hyperalgesic thermal effect on this model. Our results demonstrate that this QuilA-EAE model is clearly of interest for studying pain symptom development and so could be used to identify and evaluate new therapeutic targets. The presence of interfering symptoms still needs to be further characterized.
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Affiliation(s)
- Amélie Démosthènes
- Université Clermont Auvergne, Inserm, Neuro-Dol, Faculté de Pharmacie, Faculté de Médecine, Institut Analgesia, BP38, Clermont-Ferrand, France
| | - Benoît Sion
- Université Clermont Auvergne, Inserm, Neuro-Dol, Faculté de Pharmacie, Faculté de Médecine, Institut Analgesia, BP38, Clermont-Ferrand, France
| | - Fabrice Giraudet
- Université Clermont Auvergne, Inserm, Neuro-Dol, Faculté de Pharmacie, Faculté de Médecine, Institut Analgesia, BP38, Clermont-Ferrand, France
| | - Xavier Moisset
- Université Clermont Auvergne, CHU de Clermont-Ferrand, Inserm, Neuro-Dol, Faculté de Médecine, Institut Analgesia, BP38, Clermont-Ferrand, France
| | - Laurence Daulhac
- Université Clermont Auvergne, Inserm, Neuro-Dol, Faculté de Pharmacie, Faculté de Médecine, Institut Analgesia, BP38, Clermont-Ferrand, France
| | - Alain Eschalier
- Université Clermont Auvergne, Inserm, Neuro-Dol, Faculté de Pharmacie, Faculté de Médecine, Institut Analgesia, BP38, Clermont-Ferrand, France
| | - Mélina Bégou
- Université Clermont Auvergne, Inserm, Neuro-Dol, Faculté de Pharmacie, Faculté de Médecine, Institut Analgesia, BP38, Clermont-Ferrand, France
- *Correspondence: Mélina Bégou
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28
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Zhang G, Deighan A, Raj A, Robinson L, Donato HJ, Garland G, Leland M, Martin-McNulty B, Kolumam GA, Riegler J, Freund A, Wright KM, Churchill GA. Intermittent fasting and caloric restriction interact with genetics to shape physiological health in mice. Genetics 2022; 220:iyab157. [PMID: 34791228 PMCID: PMC8733459 DOI: 10.1093/genetics/iyab157] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 08/10/2021] [Indexed: 11/20/2022] Open
Abstract
Dietary interventions can dramatically affect physiological health and organismal lifespan. The degree to which organismal health is improved depends upon genotype and the severity of dietary intervention, but neither the effects of these factors, nor their interaction, have been quantified in an outbred population. Moreover, it is not well understood what physiological changes occur shortly after dietary change and how these may affect the health of an adult population. In this article, we investigated the effect of 6-month exposure of either caloric restriction (CR) or intermittent fasting (IF) on a broad range of physiological traits in 960 1-year old Diversity Outbred mice. We found CR and IF affected distinct aspects of physiology and neither the magnitude nor the direction (beneficial or detrimental) of effects were concordant with the severity of the intervention. In addition to the effects of diet, genetic variation significantly affected 31 of 36 traits (heritabilities ranged from 0.04 to 0.65). We observed significant covariation between many traits that was due to both diet and genetics and quantified these effects with phenotypic and genetic correlations. We genetically mapped 16 diet-independent and 2 diet-dependent significant quantitative trait loci, both of which were associated with cardiac physiology. Collectively, these results demonstrate the degree to which diet and genetics interact to shape the physiological health of adult mice following 6 months of dietary intervention.
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Affiliation(s)
- Guozhu Zhang
- Calico Life Sciences LLC, South San Francisco, CA 94080, USA
| | | | - Anil Raj
- Calico Life Sciences LLC, South San Francisco, CA 94080, USA
| | | | | | | | | | | | | | | | - Adam Freund
- Calico Life Sciences LLC, South San Francisco, CA 94080, USA
| | - Kevin M Wright
- Calico Life Sciences LLC, South San Francisco, CA 94080, USA
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29
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Ferrer-Donato A, Contreras A, Fernandez P, Fernandez-Martos CM. The potential benefit of leptin therapy against amyotrophic lateral sclerosis (ALS). Brain Behav 2022; 12:e2465. [PMID: 34935299 PMCID: PMC8785645 DOI: 10.1002/brb3.2465] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 11/02/2021] [Accepted: 11/15/2021] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND Targeting leptin could represent a rational strategy to treat amyotrophic lateral sclerosis (ALS), as previously clinical studies have shown its levels to be associated with a lower risk of ALS disease. However, very little is known about the potential influence of leptin in altering disease progression in ALS, as it has thus far been correlated with the protection exerted by increased fat mass stores. METHODS We studied the impact of leptin treatment beginning at 42-days of age (asymptomatic stage of disease) in the TDP-43 (TDP43A315T ) transgenic (Tg) ALS mouse model. RESULTS Our study shows that leptin treatment was associated with altered expression of adipokines and metabolic proteins in TDP43A315T mice. We also observed that weight loss decline was less prominent after leptin treatment in TDP43A315T mice relative to vehicle-treated animals. In TDP43A315T mice treated with leptin the disease duration lasted longer along with an improvement in motor performance relative to vehicle-treated animals. CONCLUSIONS Collectively, our results support leptin as a potential novel treatment approach for ALS.
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Affiliation(s)
- Agueda Ferrer-Donato
- Neurometabolism Research Lab., Hospital Nacional de Paraplejicos, SESCAM, Toledo, Spain
| | - Ana Contreras
- Centro de Investigación en Salud (CEINSA), Universidad de Almería, Almería, Spain
| | - Paloma Fernandez
- Institute of Applied Molecular Medicine (IMMA), Faculty of Medicine, Universidad San Pablo CEU, Madrid, Spain
| | - Carmen M Fernandez-Martos
- Neurometabolism Research Lab., Hospital Nacional de Paraplejicos, SESCAM, Toledo, Spain.,Wicking Dementia Research and Education Centre, College of Health and Medicine, University of Tasmania, Hobart, Australia
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30
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Yu H, Liu X, Chen B, Vickstrom CR, Friedman V, Kelly TJ, Bai X, Zhao L, Hillard CJ, Liu QS. The Neuroprotective Effects of the CB2 Agonist GW842166x in the 6-OHDA Mouse Model of Parkinson's Disease. Cells 2021; 10:3548. [PMID: 34944056 PMCID: PMC8700250 DOI: 10.3390/cells10123548] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 12/09/2021] [Accepted: 12/13/2021] [Indexed: 12/21/2022] Open
Abstract
Parkinson's disease (PD) is a chronic neurodegenerative disorder associated with dopamine neuron loss and motor dysfunction. Neuroprotective agents that prevent dopamine neuron death hold great promise for slowing the disease's progression. The activation of cannabinoid (CB) receptors has shown neuroprotective effects in preclinical models of neurodegenerative disease, traumatic brain injury, and stroke, and may provide neuroprotection against PD. Here, we report that the selective CB2 agonist GW842166x exerted protective effects against the 6-hydroxydopamine (6-OHDA)-induced loss of dopamine neurons and its associated motor function deficits in mice, as shown by an improvement in balance beam walking, pole, grip strength, rotarod, and amphetamine-induced rotation tests. The neuroprotective effects of GW842166x were prevented by the CB2 receptor antagonist AM630, suggesting a CB2-dependent mechanism. To investigate potential mechanisms for the neuroprotective effects of GW842166x, we performed electrophysiological recordings from substantia nigra pars compacta (SNc) dopamine neurons in ex vivo midbrain slices prepared from drug-naïve mice. We found that the bath application of GW842166x led to a decrease in action potential firing, likely due to a decrease in hyperpolarization-activated currents (Ih) and a shift of the half-activation potential (V1/2) of Ih to a more hyperpolarized level. Taken together, the CB2 agonist GW842166x may reduce the vulnerability of dopamine neurons to 6-OHDA by decreasing the action potential firing of these neurons and the associated calcium load.
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Affiliation(s)
- Hao Yu
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, USA; (H.Y.); (X.L.); (B.C.); (C.R.V.); (V.F.); (T.J.K.); (C.J.H.)
- Department of Exercise Physiology, Beijing Sport University, Beijing 100084, China;
| | - Xiaojie Liu
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, USA; (H.Y.); (X.L.); (B.C.); (C.R.V.); (V.F.); (T.J.K.); (C.J.H.)
| | - Bixuan Chen
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, USA; (H.Y.); (X.L.); (B.C.); (C.R.V.); (V.F.); (T.J.K.); (C.J.H.)
| | - Casey R. Vickstrom
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, USA; (H.Y.); (X.L.); (B.C.); (C.R.V.); (V.F.); (T.J.K.); (C.J.H.)
| | - Vladislav Friedman
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, USA; (H.Y.); (X.L.); (B.C.); (C.R.V.); (V.F.); (T.J.K.); (C.J.H.)
| | - Thomas J. Kelly
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, USA; (H.Y.); (X.L.); (B.C.); (C.R.V.); (V.F.); (T.J.K.); (C.J.H.)
| | - Xiaowen Bai
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, USA;
| | - Li Zhao
- Department of Exercise Physiology, Beijing Sport University, Beijing 100084, China;
| | - Cecilia J. Hillard
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, USA; (H.Y.); (X.L.); (B.C.); (C.R.V.); (V.F.); (T.J.K.); (C.J.H.)
| | - Qing-Song Liu
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, USA; (H.Y.); (X.L.); (B.C.); (C.R.V.); (V.F.); (T.J.K.); (C.J.H.)
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31
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La Cognata V, Golini E, Iemmolo R, Balletta S, Morello G, De Rosa C, Villari A, Marinelli S, Vacca V, Bonaventura G, Dell'Albani P, Aronica E, Mammano F, Mandillo S, Cavallaro S. CXCR2 increases in ALS cortical neurons and its inhibition prevents motor neuron degeneration in vitro and improves neuromuscular function in SOD1G93A mice. Neurobiol Dis 2021; 160:105538. [PMID: 34743985 DOI: 10.1016/j.nbd.2021.105538] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 10/13/2021] [Accepted: 10/27/2021] [Indexed: 11/26/2022] Open
Abstract
Amyotrophic Lateral Sclerosis (ALS) is a progressive neurodegenerative disease characterized by depletion of motor neurons (MNs), for which effective medical treatments are still required. Previous transcriptomic analysis revealed the up-regulation of C-X-C motif chemokine receptor 2 (CXCR2)-mRNA in a subset of sporadic ALS patients and SOD1G93A mice. Here, we confirmed the increase of CXCR2 in human ALS cortex, and showed that CXCR2 is mainly localized in cell bodies and axons of cortical neurons. We also investigated the effects of reparixin, an allosteric inhibitor of CXCR2, in degenerating human iPSC-derived MNs and SOD1G93A mice. In vitro, reparixin rescued MNs from apoptotic cell death, preserving neuronal morphology, mitochondrial membrane potential and cytoplasmic membrane integrity, whereas in vivo it improved neuromuscular function of SOD1G93A mice. Altogether, these data suggest a role for CXCR2 in ALS pathology and support its pharmacological inhibition as a candidate therapeutic strategy against ALS at least in a specific subgroup of patients.
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Affiliation(s)
- Valentina La Cognata
- Institute for Biomedical Research and Innovation, National Research Council, Via P. Gaifami 18, 95126 Catania, CT, Italy.
| | - Elisabetta Golini
- Institute of Biochemistry and Cell Biology, National Research Council, Via E. Ramarini 32, 00015 Monterotondo Scalo, RM, Italy.
| | - Rosario Iemmolo
- Institute for Biomedical Research and Innovation, National Research Council, Via P. Gaifami 18, 95126 Catania, CT, Italy.
| | - Sara Balletta
- Institute of Biochemistry and Cell Biology, National Research Council, Via E. Ramarini 32, 00015 Monterotondo Scalo, RM, Italy.
| | - Giovanna Morello
- Institute for Biomedical Research and Innovation, National Research Council, Via P. Gaifami 18, 95126 Catania, CT, Italy.
| | - Carla De Rosa
- Institute of Biochemistry and Cell Biology, National Research Council, Via E. Ramarini 32, 00015 Monterotondo Scalo, RM, Italy.
| | - Ambra Villari
- Institute for Biomedical Research and Innovation, National Research Council, Via P. Gaifami 18, 95126 Catania, CT, Italy.
| | - Sara Marinelli
- Institute of Biochemistry and Cell Biology, National Research Council, Via E. Ramarini 32, 00015 Monterotondo Scalo, RM, Italy.
| | - Valentina Vacca
- Institute of Biochemistry and Cell Biology, National Research Council, Via E. Ramarini 32, 00015 Monterotondo Scalo, RM, Italy.
| | - Gabriele Bonaventura
- Institute for Biomedical Research and Innovation, National Research Council, Via P. Gaifami 18, 95126 Catania, CT, Italy.
| | - Paola Dell'Albani
- Institute for Biomedical Research and Innovation, National Research Council, Via P. Gaifami 18, 95126 Catania, CT, Italy.
| | - Eleonora Aronica
- Department of (Neuro) Pathology, Amsterdam UMC, University of Amsterdam, Amsterdam Neuroscience, Meibergdreef 9, 1105 Amsterdam, the Netherlands.
| | - Fabio Mammano
- Institute of Biochemistry and Cell Biology, National Research Council, Via E. Ramarini 32, 00015 Monterotondo Scalo, RM, Italy; Department of Physics and Astronomy "G. Galilei", University of Padua, Padova, Italy.
| | - Silvia Mandillo
- Institute of Biochemistry and Cell Biology, National Research Council, Via E. Ramarini 32, 00015 Monterotondo Scalo, RM, Italy.
| | - Sebastiano Cavallaro
- Institute for Biomedical Research and Innovation, National Research Council, Via P. Gaifami 18, 95126 Catania, CT, Italy.
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32
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Chan JZ, Fernandes MF, Hashemi A, Grewal RS, Mardian EB, Bradley RM, Duncan RE. Age-associated increase in anxiety-like behavior in Lpaatδ/Agpat4 knockout mice. CURRENT RESEARCH IN BEHAVIORAL SCIENCES 2021. [DOI: 10.1016/j.crbeha.2021.100042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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33
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Grieco F, Bernstein BJ, Biemans B, Bikovski L, Burnett CJ, Cushman JD, van Dam EA, Fry SA, Richmond-Hacham B, Homberg JR, Kas MJH, Kessels HW, Koopmans B, Krashes MJ, Krishnan V, Logan S, Loos M, McCann KE, Parduzi Q, Pick CG, Prevot TD, Riedel G, Robinson L, Sadighi M, Smit AB, Sonntag W, Roelofs RF, Tegelenbosch RAJ, Noldus LPJJ. Measuring Behavior in the Home Cage: Study Design, Applications, Challenges, and Perspectives. Front Behav Neurosci 2021; 15:735387. [PMID: 34630052 PMCID: PMC8498589 DOI: 10.3389/fnbeh.2021.735387] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 08/27/2021] [Indexed: 12/14/2022] Open
Abstract
The reproducibility crisis (or replication crisis) in biomedical research is a particularly existential and under-addressed issue in the field of behavioral neuroscience, where, in spite of efforts to standardize testing and assay protocols, several known and unknown sources of confounding environmental factors add to variance. Human interference is a major contributor to variability both within and across laboratories, as well as novelty-induced anxiety. Attempts to reduce human interference and to measure more "natural" behaviors in subjects has led to the development of automated home-cage monitoring systems. These systems enable prolonged and longitudinal recordings, and provide large continuous measures of spontaneous behavior that can be analyzed across multiple time scales. In this review, a diverse team of neuroscientists and product developers share their experiences using such an automated monitoring system that combines Noldus PhenoTyper® home-cages and the video-based tracking software, EthoVision® XT, to extract digital biomarkers of motor, emotional, social and cognitive behavior. After presenting our working definition of a "home-cage", we compare home-cage testing with more conventional out-of-cage tests (e.g., the open field) and outline the various advantages of the former, including opportunities for within-subject analyses and assessments of circadian and ultradian activity. Next, we address technical issues pertaining to the acquisition of behavioral data, such as the fine-tuning of the tracking software and the potential for integration with biotelemetry and optogenetics. Finally, we provide guidance on which behavioral measures to emphasize, how to filter, segment, and analyze behavior, and how to use analysis scripts. We summarize how the PhenoTyper has applications to study neuropharmacology as well as animal models of neurodegenerative and neuropsychiatric illness. Looking forward, we examine current challenges and the impact of new developments. Examples include the automated recognition of specific behaviors, unambiguous tracking of individuals in a social context, the development of more animal-centered measures of behavior and ways of dealing with large datasets. Together, we advocate that by embracing standardized home-cage monitoring platforms like the PhenoTyper, we are poised to directly assess issues pertaining to reproducibility, and more importantly, measure features of rodent behavior under more ethologically relevant scenarios.
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Affiliation(s)
| | - Briana J Bernstein
- Neurobiology Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC, United States
| | | | - Lior Bikovski
- Myers Neuro-Behavioral Core Facility, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
- School of Behavioral Sciences, Netanya Academic College, Netanya, Israel
| | - C Joseph Burnett
- Nash Family Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Jesse D Cushman
- Neurobiology Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC, United States
| | | | - Sydney A Fry
- Neurobiology Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC, United States
| | - Bar Richmond-Hacham
- Department of Anatomy and Anthropology, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Judith R Homberg
- Department of Cognitive Neuroscience, Donders Institute for Brain, Cognition and Behaviour, Radboud University Nijmegen Medical Centre, Nijmegen, Netherlands
| | - Martien J H Kas
- Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, Netherlands
| | - Helmut W Kessels
- Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam, Netherlands
| | | | - Michael J Krashes
- National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, United States
| | - Vaishnav Krishnan
- Laboratory of Epilepsy and Emotional Behavior, Baylor Comprehensive Epilepsy Center, Departments of Neurology, Neuroscience, and Psychiatry & Behavioral Sciences, Baylor College of Medicine, Houston, TX, United States
| | - Sreemathi Logan
- Department of Rehabilitation Sciences, College of Allied Health, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States
| | - Maarten Loos
- Sylics (Synaptologics BV), Amsterdam, Netherlands
| | - Katharine E McCann
- Neurobiology Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC, United States
| | | | - Chaim G Pick
- Department of Anatomy and Anthropology, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
- Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
- The Dr. Miriam and Sheldon G. Adelson Chair and Center for the Biology of Addictive Diseases, Tel Aviv University, Tel Aviv, Israel
| | - Thomas D Prevot
- Centre for Addiction and Mental Health and Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Gernot Riedel
- Institute of Medical Sciences, University of Aberdeen, Aberdeen, United Kingdom
| | - Lianne Robinson
- Institute of Medical Sciences, University of Aberdeen, Aberdeen, United Kingdom
| | - Mina Sadighi
- Department of Cognitive Neuroscience, Donders Institute for Brain, Cognition and Behaviour, Radboud University Nijmegen Medical Centre, Nijmegen, Netherlands
| | - August B Smit
- Department of Molecular and Cellular Neurobiology, Center for Neurogenomics and Cognitive Research, VU University Amsterdam, Amsterdam, Netherlands
| | - William Sonntag
- Department of Biochemistry & Molecular Biology, Center for Geroscience, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States
| | | | | | - Lucas P J J Noldus
- Noldus Information Technology BV, Wageningen, Netherlands
- Department of Biophysics, Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, Netherlands
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Elkes M, Andonovski M, Vidal D, Farago M, Modafferi R, Claypool SM, LeBlanc PJ. The Influence of Supplemental Dietary Linoleic Acid on Skeletal Muscle Contractile Function in a Rodent Model of Barth Syndrome. Front Physiol 2021; 12:731961. [PMID: 34489741 PMCID: PMC8416984 DOI: 10.3389/fphys.2021.731961] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 08/02/2021] [Indexed: 11/13/2022] Open
Abstract
Barth syndrome is a rare and incurable X-linked (male-specific) genetic disease that affects the protein tafazzin (Taz). Taz is an important enzyme responsible for synthesizing biologically relevant cardiolipin (for heart and skeletal muscle, cardiolipin rich in linoleic acid), a critical phospholipid of mitochondrial form and function. Mutations to Taz cause dysfunctional mitochondria, resulting in exercise intolerance due to skeletal muscle weakness. To date, there has been limited research on improving skeletal muscle function, with interventions focused on endurance and resistance exercise. Previous cell culture research has shown therapeutic potential for the addition of exogenous linoleic acid in improving Taz-deficient mitochondrial function but has not been examined in vivo. The purpose of this study was to examine the influence of supplemental dietary linoleic acid on skeletal muscle function in a rodent model of Barth syndrome, the inducible Taz knockdown (TazKD) mouse. One of the main findings was that TazKD soleus demonstrated an impaired contractile phenotype (slower force development and rates of relaxation) in vitro compared to their WT littermates. Interestingly, this impaired contractile phenotype seen in vitro did not translate to altered muscle function in vivo at the whole-body level. Also, supplemental linoleic acid attenuated, to some degree, in vitro impaired contractile phenotype in TazKD soleus, and these findings appear to be partially mediated by improvements in cardiolipin content and resulting mitochondrial supercomplex formation. Future research will further examine alternative mechanisms of dietary supplemental LA on improving skeletal muscle contractile dysfunction in TazKD mice.
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Affiliation(s)
- Mario Elkes
- Faculty of Applied Health Sciences, Center for Bone and Muscle Health, Brock University, St. Catharines, ON, Canada
| | - Martin Andonovski
- Faculty of Applied Health Sciences, Center for Bone and Muscle Health, Brock University, St. Catharines, ON, Canada
| | - Daislyn Vidal
- Faculty of Applied Health Sciences, Center for Bone and Muscle Health, Brock University, St. Catharines, ON, Canada
| | - Madison Farago
- Faculty of Applied Health Sciences, Center for Bone and Muscle Health, Brock University, St. Catharines, ON, Canada
| | - Ryan Modafferi
- Faculty of Applied Health Sciences, Center for Bone and Muscle Health, Brock University, St. Catharines, ON, Canada
| | - Steven M Claypool
- Department of Physiology, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Paul J LeBlanc
- Faculty of Applied Health Sciences, Center for Bone and Muscle Health, Brock University, St. Catharines, ON, Canada
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35
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Wei Z, Xu J, Chen L, Hirschler L, Barbier EL, Li T, Wong PC, Lu H. Brain metabolism in tau and amyloid mouse models of Alzheimer's disease: An MRI study. NMR IN BIOMEDICINE 2021; 34:e4568. [PMID: 34050996 PMCID: PMC9574887 DOI: 10.1002/nbm.4568] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 05/17/2021] [Accepted: 05/20/2021] [Indexed: 06/12/2023]
Abstract
Alzheimer's disease (AD) is the leading cause of cognitive impairment and dementia in elderly individuals. According to the current biomarker framework for "unbiased descriptive classification", biomarkers of neurodegeneration, "N", constitute a critical component in the tri-category "A/T/N" system. Current biomarkers of neurodegeneration suffer from potential drawbacks such as requiring invasive lumbar puncture, involving ionizing radiation, or representing a late, irreversible marker. Recent human studies have suggested that reduced brain oxygen metabolism may be a new functional marker of neurodegeneration in AD, but the heterogeneity and the presence of mixed pathology in human patients did not allow a full understanding of the role of oxygen extraction and metabolism in AD. In this report, global brain oxygen metabolism and related physiological parameters were studied in two AD mouse models with relatively pure pathology, using advanced MRI techniques including T2 -relaxation-under-spin-tagging (TRUST) and phase contrast (PC) MRI. Additionally, regional cerebral blood flow (CBF) was determined with pseudocontinuous arterial spin labeling. Reduced global oxygen extraction fraction (by -18.7%, p = 0.008), unit-mass cerebral metabolic rate of oxygen (CMRO2 ) (by -17.4%, p = 0.04) and total CMRO2 (by -30.8%, p < 0.001) were observed in Tau4RΔK mice-referred to as the tau AD model-which manifested pronounced neurodegeneration, as measured by diminished brain volume (by -15.2%, p < 0.001). Global and regional CBF in these mice were not different from those of wild-type mice (p > 0.05), suggesting normal vascular function. By contrast, in B6;SJL-Tg [APPSWE]2576Kha (APP) mice-referred to as the amyloid AD model-no brain volume reduction, as well as relatively intact brain oxygen extraction and metabolism, were found (p > 0.05). Consistent with the imaging data, behavioral measures of walking distance were impaired in Tau4RΔK mice (p = 0.004), but not in APP mice (p = 0.88). Collectively, these findings support the hypothesis that noninvasive MRI measurement of brain oxygen metabolism may be a promising biomarker of neurodegeneration in AD.
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Affiliation(s)
- Zhiliang Wei
- Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- F. M. Kirby Research Center for Functional Brain Imaging, Kennedy Krieger Research Institute, Baltimore, Maryland, USA
| | - Jiadi Xu
- Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- F. M. Kirby Research Center for Functional Brain Imaging, Kennedy Krieger Research Institute, Baltimore, Maryland, USA
| | - Lin Chen
- Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- F. M. Kirby Research Center for Functional Brain Imaging, Kennedy Krieger Research Institute, Baltimore, Maryland, USA
- Department of Electronic Science, Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Xiamen University, Xiamen, Fujian, China
| | - Lydiane Hirschler
- Université Grenoble Alpes, Inserm, U1216, Grenoble Institut Neurosciences, Grenoble, France
- C.J. Gorter Center for High Field MRI, Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Emmanuel L. Barbier
- Université Grenoble Alpes, Inserm, U1216, Grenoble Institut Neurosciences, Grenoble, France
| | - Tong Li
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Philip C. Wong
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Hanzhang Lu
- Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- F. M. Kirby Research Center for Functional Brain Imaging, Kennedy Krieger Research Institute, Baltimore, Maryland, USA
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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36
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El Brouzi MY, Lamtai M, Zghari O, Ouakki S, Azizoun I, El Hessni A, Mesfioui A, Ouichou A. Intrahippocampal Effects of Nickel Injection on the Affective and Cognitive Response in Wistar Rat: Potential Role of Oxidative Stress. Biol Trace Elem Res 2021; 199:3382-3392. [PMID: 33230633 DOI: 10.1007/s12011-020-02457-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 10/21/2020] [Indexed: 02/07/2023]
Abstract
The present study focused on affective and cognitive behaviors in male Wistar rats, following direct and unique exposure to nickel chloride (NiCl2), as well as the possible involvement of oxidative stress. The rats were exposed to NiCl2 (300 μM), by intracerebral administration of 2 μL of this metal at the right hippocampus, using the stereotaxic approach. Five days after the surgery, a battery of behavioral tests was performed, including the open-field test (OFT) and elevated plus maze test (EPM) to assess the state of anxiety-like behavior and forced swimming test (FST) for depressive-like behavior. Y-maze and Morris Water Maze (MWM) were used to evaluate working memory and spatial learning. Thereafter, oxidative stress markers of the hippocampus were evaluated. The results confirm that NiCl2 exerts anxiogenic effects in both anxiety tests and depressogenic effects in the FST. In addition, MWM and Y-maze data show that NiCl2 causes memory and spatial learning disorders. The biochemical assay results showed that intrahippocampal injection of NiCl2 increased the levels of nitric oxide and lipid peroxidation (p < 0.001), while the activities of catalase and superoxide dismutase were significantly decreased in the hippocampus (p < 0.01). Overall, these results suggest that NiCl2 causes affective and cognitive disorders and oxidative stress in rats.
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Affiliation(s)
- Mohamed Yassine El Brouzi
- Laboratory of Genetics, Neuroendocrinology and Biotechnology, Faculty of Sciences, Ibn Tofaïl University, Kénitra, Morocco.
| | - Mouloud Lamtai
- Laboratory of Genetics, Neuroendocrinology and Biotechnology, Faculty of Sciences, Ibn Tofaïl University, Kénitra, Morocco
| | - Oussama Zghari
- Laboratory of Genetics, Neuroendocrinology and Biotechnology, Faculty of Sciences, Ibn Tofaïl University, Kénitra, Morocco
| | - Sihame Ouakki
- Laboratory of Genetics, Neuroendocrinology and Biotechnology, Faculty of Sciences, Ibn Tofaïl University, Kénitra, Morocco
| | - Ibrahim Azizoun
- Laboratory of Genetics, Neuroendocrinology and Biotechnology, Faculty of Sciences, Ibn Tofaïl University, Kénitra, Morocco
| | - Aboubaker El Hessni
- Laboratory of Genetics, Neuroendocrinology and Biotechnology, Faculty of Sciences, Ibn Tofaïl University, Kénitra, Morocco
| | - Abdelhalem Mesfioui
- Laboratory of Genetics, Neuroendocrinology and Biotechnology, Faculty of Sciences, Ibn Tofaïl University, Kénitra, Morocco
| | - Ali Ouichou
- Laboratory of Genetics, Neuroendocrinology and Biotechnology, Faculty of Sciences, Ibn Tofaïl University, Kénitra, Morocco
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37
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Neto T, Faustino-Rocha AI, Gil da Costa RM, Medeiros R, Oliveira PA. A quick and low-intensity method for oral administration to large numbers of mice: A possible alternative to oral gavage. Lab Anim 2021; 56:185-190. [PMID: 34338062 DOI: 10.1177/00236772211035250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Oral administration of medication to experimental animals is a cause of significant stress. When coupled to animals who are already under strenuous circumstances due to the disease being modelled, there is a significant risk for increased morbidity and mortality, thus influencing the results. Faced with these constraints, a low-intensity method for oral administration was developed, based solely on the natural behaviour of the animals and minimal conditioning, in which precise doses of medication were administered in a locally available, standard wheat cookie fragment, providing both a palatable vehicle and an absorbent matrix for the medication. Fast administration to large numbers of animals was thus achieved, safeguarding the animals' welfare and ensuring ease of handling. This method is a promising alternative to oral gavage in pre-clinical drug studies with laboratory mice.
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Affiliation(s)
- Tiago Neto
- Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Portugal.,Molecular Oncology and Viral Pathology Group, CI-IPOP, Portuguese Institute of Oncology (IPO), Portugal.,Center for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Trás-os-Montes and Alto Douro (UTAD), Portugal
| | - Ana I Faustino-Rocha
- Center for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Trás-os-Montes and Alto Douro (UTAD), Portugal.,Department of Zootechnics, School of Sciences and Technology, University of Évora, Portugal.,Comprehensive Health Research Centre (CHRC), University of Évora, Évora, Portugal
| | - Rui M Gil da Costa
- Molecular Oncology and Viral Pathology Group, CI-IPOP, Portuguese Institute of Oncology (IPO), Portugal.,Center for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Trás-os-Montes and Alto Douro (UTAD), Portugal.,Postgraduate Programme in Adult Health (PPGSAD) and Tumour Biobank, Federal University of Maranhão (UFMA), Brazil
| | - Rui Medeiros
- Molecular Oncology and Viral Pathology Group, CI-IPOP, Portuguese Institute of Oncology (IPO), Portugal.,Faculty of Medicine, University of Porto, Portugal.,Virology Service, Portuguese Oncology Institute of Porto (IPO Porto), Portugal.,Biomedical Research Center (CEBIMED), Faculty of Health Sciences of the Fernando Pessoa University, Portugal.,Research Department, Portuguese League Against Cancer - Regional Nucleus of the North (Liga Portuguesa Contra o Cancro - Núcleo Regional do Norte), Portugal
| | - Paula A Oliveira
- Center for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Trás-os-Montes and Alto Douro (UTAD), Portugal.,Department of Veterinary Sciences, UTAD, Portugal
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38
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Cathiard L, Fraulob V, Lam DD, Torres M, Winkelmann J, Krężel W. Investigation of dopaminergic signalling in Meis homeobox 1 (Meis1) deficient mice as an animal model of restless legs syndrome. J Sleep Res 2021; 30:e13311. [PMID: 34008292 DOI: 10.1111/jsr.13311] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 01/28/2021] [Accepted: 01/28/2021] [Indexed: 12/24/2022]
Abstract
Restless legs syndrome (RLS) is a common neurological disorder in which sensorimotor symptoms lead to sleep disturbances with substantial impact on life quality. RLS is caused by a combination of genetic and environmental factors, and Meis homeobox 1 (MEIS1) was identified as the main genetic risk factor. The efficacy of dopaminergic agonists, including dopamine D2 receptor (DRD2) agonists, for treating RLS led to the hypothesis of dopaminergic impairment. However, it remains unclear whether it is directly involved in the disease aetiology and what the role of MEIS1 is considering its developmental and postnatal expression in the striatum, a critical structure in motor control. We addressed the role of MEIS1 in striatal dopaminergic signalling in Meis1+/- mice, a valid animal model of RLS, and in Meis1Drd2 -/- mice carrying a somatic null mutation of Meis1 in Drd2+ neurones. Motor behaviours, pharmacological exploration of DRD2 signalling, and quantitative analyses of DRD2+ and DRD1+ expressing neurones were investigated. Although Meis1+/- mice displayed an RLS-like phenotype, including motor hyperactivity at the beginning of the rest phase, no reduction of dopaminoceptive neurones was observed in the striatum. Moreover, the null mutation of Meis1 in DRD2+ cells did not lead to RLS-like symptoms and dysfunction of the DRD2 pathway. These data indicate that MEIS1 does not modulate DRD2-dependent signalling in a cell-autonomous manner. Thus, the efficiency of D2 -like agonists may reflect the involvement of other dopaminergic receptors or normalisation of motor circuit abnormalities downstream from defects caused by MEIS1 dysfunction.
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Affiliation(s)
- Lucile Cathiard
- Institute of Genetics and Molecular and Cellular Biology, CNRS UMR7104, INSERM U1258, University of Strasbourg, Illkirch, France
| | - Valerie Fraulob
- Institute of Genetics and Molecular and Cellular Biology, CNRS UMR7104, INSERM U1258, University of Strasbourg, Illkirch, France
| | - Daniel D Lam
- Institute for Human Genetic, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Miguel Torres
- Cardiovascular Development Program, Centro Nacional de Investigaciones Cardiovasculares, CNIC, Madrid, Spain
| | - Juliane Winkelmann
- Institute for Human Genetic, Klinikum rechts der Isar, Technische Universität München, Munich, Germany.,Chair for Neucgenetic, Klinikum rechts der Isar, Technische Universität München; Institute for Neurogenomics, Helmholtz Zentrum München; Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
| | - Wojciech Krężel
- Institute of Genetics and Molecular and Cellular Biology, CNRS UMR7104, INSERM U1258, University of Strasbourg, Illkirch, France
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39
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Abstract
The SmithKline, Harwell, Imperial College, Royal Hospital, Phenotype Assessment (SHIRPA) is a rapid battery of tests comprising 42 measurements of motor activity, coordination, postural control, muscle tone, autonomic functions, and emotional reactivity, as well as reflexes dependent on visual, auditory, and tactile modalities. Individual scores in SHIRPA are sensitive in detecting phenotypes of several experimental models of neural disease, especially cerebellar degeneration and Alzheimer disease, and combined subscores have been useful in estimating the impact of vascular anomalies and exposure to infectious agents. In cerebellar degeneration, weak forelimb grip, impaired wire maneuver and air righting, and negative geotaxis appear as prevalent features. Most of the measures in the battery are susceptible to change after gene modifications or physiological alterations. SHIRPA can be used both in adult mice and mice in the preweaning period to screen for sensorimotor function and emotional reactivity, not selective attention or memory. © 2021 Wiley Periodicals LLC Basic Protocol: Step-by-step procedure for SHIRPA.
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Affiliation(s)
- Robert Lalonde
- Department of Psychology, University of Rouen, Mont-Saint-Aignan, France
- Laboratory of Stress, Immunity, Pathogens, Medical School, University of Lorraine, Vandœuvre-les-Nancy, France
| | | | - Catherine Strazielle
- Laboratory of Stress, Immunity, Pathogens, Medical School, University of Lorraine, Vandœuvre-les-Nancy, France
- CHRU Nancy, Vandœuvre-les-Nancy, France
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40
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Duchon A, Del Mar Muniz Moreno M, Martin Lorenzo S, Silva de Souza MP, Chevalier C, Nalesso V, Meziane H, Loureiro de Sousa P, Noblet V, Armspach JP, Brault V, Herault Y. Multi-influential genetic interactions alter behaviour and cognition through six main biological cascades in Down syndrome mouse models. Hum Mol Genet 2021; 30:771-788. [PMID: 33693642 PMCID: PMC8161522 DOI: 10.1093/hmg/ddab012] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 12/21/2020] [Accepted: 12/22/2020] [Indexed: 12/13/2022] Open
Abstract
Down syndrome (DS) is the most common genetic form of intellectual disability caused by the presence of an additional copy of human chromosome 21 (Hsa21). To provide novel insights into genotype–phenotype correlations, we used standardized behavioural tests, magnetic resonance imaging and hippocampal gene expression to screen several DS mouse models for the mouse chromosome 16 region homologous to Hsa21. First, we unravelled several genetic interactions between different regions of chromosome 16 and how they contribute significantly to altering the outcome of the phenotypes in brain cognition, function and structure. Then, in-depth analysis of misregulated expressed genes involved in synaptic dysfunction highlighted six biological cascades centred around DYRK1A, GSK3β, NPY, SNARE, RHOA and NPAS4. Finally, we provide a novel vision of the existing altered gene–gene crosstalk and molecular mechanisms targeting specific hubs in DS models that should become central to better understanding of DS and improving the development of therapies.
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Affiliation(s)
- Arnaud Duchon
- Université de Strasbourg, CNRS, INSERM, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), department of translational medicine and neurogenetics 1 rue Laurent Fries, 67404 Illkirch Graffenstaden, France
| | - Maria Del Mar Muniz Moreno
- Université de Strasbourg, CNRS, INSERM, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), department of translational medicine and neurogenetics 1 rue Laurent Fries, 67404 Illkirch Graffenstaden, France
| | - Sandra Martin Lorenzo
- Université de Strasbourg, CNRS, INSERM, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), department of translational medicine and neurogenetics 1 rue Laurent Fries, 67404 Illkirch Graffenstaden, France
| | - Marcia Priscilla Silva de Souza
- Université de Strasbourg, CNRS, INSERM, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), department of translational medicine and neurogenetics 1 rue Laurent Fries, 67404 Illkirch Graffenstaden, France
| | - Claire Chevalier
- Université de Strasbourg, CNRS, INSERM, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), department of translational medicine and neurogenetics 1 rue Laurent Fries, 67404 Illkirch Graffenstaden, France
| | - Valérie Nalesso
- Université de Strasbourg, CNRS, INSERM, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), department of translational medicine and neurogenetics 1 rue Laurent Fries, 67404 Illkirch Graffenstaden, France
| | - Hamid Meziane
- Université de Strasbourg, CNRS, INSERM, Institut Clinique de la Souris (ICS), CELPHEDIA, PHENOMIN, 1 rue Laurent Fries, 67404 Illkirch Graffenstaden, France
| | | | - Vincent Noblet
- Université de Strasbourg, CNRS UMR 7357, ICube, FMTS, 67000 Strasbourg, France
| | - Jean-Paul Armspach
- Université de Strasbourg, CNRS UMR 7357, ICube, FMTS, 67000 Strasbourg, France
| | - Veronique Brault
- Université de Strasbourg, CNRS, INSERM, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), department of translational medicine and neurogenetics 1 rue Laurent Fries, 67404 Illkirch Graffenstaden, France
| | - Yann Herault
- Université de Strasbourg, CNRS, INSERM, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), department of translational medicine and neurogenetics 1 rue Laurent Fries, 67404 Illkirch Graffenstaden, France.,Université de Strasbourg, CNRS, INSERM, Institut Clinique de la Souris (ICS), CELPHEDIA, PHENOMIN, 1 rue Laurent Fries, 67404 Illkirch Graffenstaden, France
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41
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Jamison CN, Dayton RD, Latimer B, McKinney MP, Mitchell HG, McMartin KE. Neurotoxic effects of nephrotoxic compound diethylene glycol. Clin Toxicol (Phila) 2021; 59:810-821. [PMID: 33475432 DOI: 10.1080/15563650.2021.1874403] [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: 10/22/2022]
Abstract
CONTEXT Diethylene glycol (DEG) is an organic compound found in household products but also as an adulterant in medicines by acting as a counterfeit solvent. DEG poisonings have been characterized predominately by acute kidney injury (AKI), but also by delayed neurological sequelae such as decreased reflexes or face and limb weakness. OBJECTIVES Characterizing the neurological symptoms of DEG poisoning in a subacute animal model would create a clearer picture of overall toxicity and possibly make mechanistic connections between kidney injury and neuropathy. METHODS Male Wistar-Han rats were orally administered doses of 4 - 6 g/kg DEG every 12 or 24 h and monitored for 7 days. Urine was collected every 12 h and endpoint blood and cerebrospinal fluid (CSF) were collected for a renal plasma panel and total protein estimation, respectively. Motor function tests were conducted before and after treatment. Kidney and brain tissue was harvested for metabolic analysis. RESULTS Of the 43 animals treated with DEG, 11 developed AKI as confirmed by increased BUN and creatinine levels. Renal and brain DGA accumulation was markedly increased in animals that developed AKI compared to animals without AKI. The total protein content in CSF in animals with kidney injury was markedly elevated compared to control and to treated animals without AKI. Significant decreases in forelimb grip strength and decreases in locomotor and rearing activity were observed in animals with AKI compared to control and to animals without AKI. DISCUSSION Repeated dosing with DEG in an animal model produced nephrotoxic effects like those in studies with acute DEG administration. The decrease in motor function and increase in CSF protein were only present in animals that developed AKI. CONCLUSIONS These studies show development of neurotoxicity in this DEG animal model and suggest that neurological symptoms are observed only when DGA accumulation and kidney injury also occur.
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Affiliation(s)
- Courtney N Jamison
- Department of Pharmacology, Toxicology and Neuroscience, LSU Health Sciences Center, Shreveport, LA, USA
| | - Robert D Dayton
- Department of Pharmacology, Toxicology and Neuroscience, LSU Health Sciences Center, Shreveport, LA, USA
| | - Brian Latimer
- Department of Pharmacology, Toxicology and Neuroscience, LSU Health Sciences Center, Shreveport, LA, USA
| | - Mary P McKinney
- Department of Pharmacology, Toxicology and Neuroscience, LSU Health Sciences Center, Shreveport, LA, USA
| | - Hannah G Mitchell
- Department of Pharmacology, Toxicology and Neuroscience, LSU Health Sciences Center, Shreveport, LA, USA
| | - Kenneth E McMartin
- Department of Pharmacology, Toxicology and Neuroscience, LSU Health Sciences Center, Shreveport, LA, USA
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42
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Masuya H, Usuda D, Nakata H, Yuhara N, Kurihara K, Namiki Y, Iwase S, Takada T, Tanaka N, Suzuki K, Yamagata Y, Kobayashi N, Yoshiki A, Kushida T. Establishment and application of information resource of mutant mice in RIKEN BioResource Research Center. Lab Anim Res 2021; 37:6. [PMID: 33455583 PMCID: PMC7811887 DOI: 10.1186/s42826-020-00068-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Accepted: 09/21/2020] [Indexed: 12/12/2022] Open
Abstract
Online databases are crucial infrastructures to facilitate the wide effective and efficient use of mouse mutant resources in life sciences. The number and types of mouse resources have been rapidly growing due to the development of genetic modification technology with associated information of genomic sequence and phenotypes. Therefore, data integration technologies to improve the findability, accessibility, interoperability, and reusability of mouse strain data becomes essential for mouse strain repositories. In 2020, the RIKEN BioResource Research Center released an integrated database of bioresources including, experimental mouse strains, Arabidopsis thaliana as a laboratory plant, cell lines, microorganisms, and genetic materials using Resource Description Framework-related technologies. The integrated database shows multiple advanced features for the dissemination of bioresource information. The current version of our online catalog of mouse strains which functions as a part of the integrated database of bioresources is available from search bars on the page of the Center (https://brc.riken.jp) and the Experimental Animal Division (https://mus.brc.riken.jp/) websites. The BioResource Research Center also released a genomic variation database of mouse strains established in Japan and Western Europe, MoG+ (https://molossinus.brc.riken.jp/mogplus/), and a database for phenotype-phenotype associations across the mouse phenome using data from the International Mouse Phenotyping Platform. In this review, we describe features of current version of databases related to mouse strain resources in RIKEN BioResource Research Center and discuss future views.
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Affiliation(s)
- Hiroshi Masuya
- Integrated Bioresource Information Division, RIKEN BioResource Research Center, 3-1-1 Koyadai, Tsukuba-shi, Ibaraki, 305-0074, Japan.
| | - Daiki Usuda
- Integrated Bioresource Information Division, RIKEN BioResource Research Center, 3-1-1 Koyadai, Tsukuba-shi, Ibaraki, 305-0074, Japan
| | - Hatsumi Nakata
- Experimental Animal Division, BioResource Research Center, RIKEN, Tsukuba, Japan
| | - Naomi Yuhara
- Integrated Bioresource Information Division, RIKEN BioResource Research Center, 3-1-1 Koyadai, Tsukuba-shi, Ibaraki, 305-0074, Japan
| | - Keiko Kurihara
- Integrated Bioresource Information Division, RIKEN BioResource Research Center, 3-1-1 Koyadai, Tsukuba-shi, Ibaraki, 305-0074, Japan
| | - Yuri Namiki
- Integrated Bioresource Information Division, RIKEN BioResource Research Center, 3-1-1 Koyadai, Tsukuba-shi, Ibaraki, 305-0074, Japan
| | - Shigeru Iwase
- Integrated Bioresource Information Division, RIKEN BioResource Research Center, 3-1-1 Koyadai, Tsukuba-shi, Ibaraki, 305-0074, Japan
| | - Toyoyuki Takada
- Integrated Bioresource Information Division, RIKEN BioResource Research Center, 3-1-1 Koyadai, Tsukuba-shi, Ibaraki, 305-0074, Japan
| | - Nobuhiko Tanaka
- Integrated Bioresource Information Division, RIKEN BioResource Research Center, 3-1-1 Koyadai, Tsukuba-shi, Ibaraki, 305-0074, Japan
| | - Kenta Suzuki
- Integrated Bioresource Information Division, RIKEN BioResource Research Center, 3-1-1 Koyadai, Tsukuba-shi, Ibaraki, 305-0074, Japan
| | - Yuki Yamagata
- Laboratory for Developmental Dynamics, Center for Biosystems Dynamics Research, RIKEN, Kobe, Japan
| | - Norio Kobayashi
- Integrated Bioresource Information Division, RIKEN BioResource Research Center, 3-1-1 Koyadai, Tsukuba-shi, Ibaraki, 305-0074, Japan.,Data Knowledge Organization Unit, Head Office for Information Systems and Cybersecurity, RIKEN, Wako, Japan
| | - Atsushi Yoshiki
- Experimental Animal Division, BioResource Research Center, RIKEN, Tsukuba, Japan
| | - Tatsuya Kushida
- Integrated Bioresource Information Division, RIKEN BioResource Research Center, 3-1-1 Koyadai, Tsukuba-shi, Ibaraki, 305-0074, Japan
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43
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Cover CG, Kesner AJ, Ukani S, Stein EA, Ikemoto S, Yang Y, Lu H. Whole brain dynamics during optogenetic self-stimulation of the medial prefrontal cortex in mice. Commun Biol 2021; 4:66. [PMID: 33446857 PMCID: PMC7809041 DOI: 10.1038/s42003-020-01612-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 12/01/2020] [Indexed: 11/08/2022] Open
Abstract
Intracranial self-stimulation, in which an animal performs an operant response to receive regional brain electrical stimulation, is a widely used procedure to study motivated behavior. While local neuronal activity has long been measured immediately before or after the operant, imaging the whole brain in real-time remains a challenge. Herein we report a method that permits functional MRI (fMRI) of brain dynamics while mice are cued to perform an operant task: licking a spout to receive optogenetic stimulation to the medial prefrontal cortex (MPFC) during a cue ON, but not cue OFF. Licking during cue ON results in activation of a widely distributed network consistent with underlying MPFC projections, while licking during cue OFF (without optogenetic stimulation) leads to negative fMRI signal in brain regions involved in acute extinction. Noninvasive whole brain readout combined with circuit-specific neuromodulation opens an avenue for investigating adaptive behavior in both healthy and disease models.
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Affiliation(s)
- Christopher G Cover
- Neuroimaging Research Branch, National Institute on Drug Abuse, Intramural Research Program, NIH, Baltimore, MD, 21224, USA
| | - Andrew J Kesner
- Behavioral Neuroscience Research Branch, National Institute on Drug Abuse, Intramural Research Program, NIH, Baltimore, MD, 21224, USA
| | - Shehzad Ukani
- Neuroimaging Research Branch, National Institute on Drug Abuse, Intramural Research Program, NIH, Baltimore, MD, 21224, USA
| | - Elliot A Stein
- Neuroimaging Research Branch, National Institute on Drug Abuse, Intramural Research Program, NIH, Baltimore, MD, 21224, USA
| | - Satoshi Ikemoto
- Behavioral Neuroscience Research Branch, National Institute on Drug Abuse, Intramural Research Program, NIH, Baltimore, MD, 21224, USA
| | - Yihong Yang
- Neuroimaging Research Branch, National Institute on Drug Abuse, Intramural Research Program, NIH, Baltimore, MD, 21224, USA.
| | - Hanbing Lu
- Neuroimaging Research Branch, National Institute on Drug Abuse, Intramural Research Program, NIH, Baltimore, MD, 21224, USA.
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44
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Howarth ER, Kemp C, Thatcher HR, Szott ID, Farningham D, Witham CL, Holmes A, Semple S, Bethell EJ. Developing and validating attention bias tools for assessing trait and state affect in animals: A worked example with Macaca mulatta. Appl Anim Behav Sci 2021. [DOI: 10.1016/j.applanim.2020.105198] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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45
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A fish is not a mouse: understanding differences in background genetics is critical for reproducibility. Lab Anim (NY) 2020; 50:19-25. [PMID: 33268901 DOI: 10.1038/s41684-020-00683-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 10/23/2020] [Indexed: 02/06/2023]
Abstract
Poorly controlled background genetics in animal models contributes to the lack of reproducibility that is increasingly recognized in biomedical research. The laboratory zebrafish, Danio rerio, has been an important model organism for decades in many research areas, yet inbred strains and traditionally managed outbred stocks are not available for this species. Sometimes incorrectly referred to as 'inbred strains' or 'strains', zebrafish wild-type lines possess background genetics that are often not well characterized, and breeding practices for these lines have not been consistent over time or among institutions. In this Perspective, we trace key milestones in the history of one of the most widely used genetic backgrounds, the AB line, to illustrate the dynamic complexity within an example background that is largely invisible when reading the scientific literature. Failure to adequately control for genetic background compromises the validity of experimental outcomes. We therefore propose that authors provide as much specific detail about the origin and genetic makeup of zebrafish lines as is reasonable and possible, and that the terms used to describe background genetics be applied in a way that is consistent with other fish and mammalian model organisms. We strongly encourage the adoption of genetic monitoring for the characterization of existing zebrafish lines, to help detect genetic contamination in breeding colonies and to verify the level of genetic heterogeneity in breeding colonies over time. Careful attention to background genetics will improve transparency and reproducibility, therefore improving the utility of the zebrafish as a model organism.
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46
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Sensini F, Inta D, Palme R, Brandwein C, Pfeiffer N, Riva MA, Gass P, Mallien AS. The impact of handling technique and handling frequency on laboratory mouse welfare is sex-specific. Sci Rep 2020; 10:17281. [PMID: 33057118 PMCID: PMC7560820 DOI: 10.1038/s41598-020-74279-3] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 09/10/2020] [Indexed: 02/07/2023] Open
Abstract
Handling is a well-known source of stress to laboratory animals and can affect variability of results and even compromise animal welfare. The conventional tail handling in mice has been shown to induce aversion and anxiety-like behaviour. Recent findings demonstrate that the use of alternative handling techniques, e.g. tunnel handling, can mitigate negative handling-induced effects. Here, we show that technique and frequency of handling influence affective behaviour and stress hormone release of subjects in a sex-dependent manner. While frequent tail handling led to a reduction of wellbeing-associated burrowing and increased despair-like behaviour in male mice, females seemed unaffected. Instead, they displayed a stress response to a low handling frequency, which was not detectable in males. This could suggest that in terms of refinement, the impact in handling could differ between the sexes. Independently from this observation, both sexes preferred to interact with the tunnel. Mice generally explored the tunnel more often than the tail-handling hands of the experimenter and showed more positively rated approaches, e.g. touching or climbing, and at the same time, less defensive burrowing, indicating a strong preference for the tunnel.
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Affiliation(s)
- Federica Sensini
- Department of Pharmacological and Biomolecular Sciences, University of Milan, Milan, Italy
| | - Dragos Inta
- RG Animal Models in Psychiatry, Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.,Department of Psychiatry (UPK), University of Basel, Basel, Switzerland
| | - Rupert Palme
- Department of Biomedical Sciences, University of Veterinary Medicine, Vienna, Austria
| | - Christiane Brandwein
- RG Animal Models in Psychiatry, Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Natascha Pfeiffer
- RG Animal Models in Psychiatry, Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Marco Andrea Riva
- Department of Pharmacological and Biomolecular Sciences, University of Milan, Milan, Italy
| | - Peter Gass
- RG Animal Models in Psychiatry, Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Anne Stephanie Mallien
- RG Animal Models in Psychiatry, Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.
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47
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von Kortzfleisch VT, Karp NA, Palme R, Kaiser S, Sachser N, Richter SH. Improving reproducibility in animal research by splitting the study population into several 'mini-experiments'. Sci Rep 2020; 10:16579. [PMID: 33024165 PMCID: PMC7538440 DOI: 10.1038/s41598-020-73503-4] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 09/11/2020] [Indexed: 01/16/2023] Open
Abstract
In light of the hotly discussed 'reproducibility crisis', a rethinking of current methodologies appears essential. Implementing multi-laboratory designs has been shown to enhance the external validity and hence the reproducibility of findings from animal research. We here aimed at proposing a new experimental strategy that transfers this logic into a single-laboratory setting. We systematically introduced heterogeneity into our study population by splitting an experiment into several 'mini-experiments' spread over different time points a few weeks apart. We hypothesised to observe improved reproducibility in such a 'mini-experiment' design in comparison to a conventionally standardised design, according to which all animals are tested at one specific point in time. By comparing both designs across independent replicates, we could indeed show that the use of such a 'mini-experiment' design improved the reproducibility and accurate detection of exemplary treatment effects (behavioural and physiological differences between four mouse strains) in about half of all investigated strain comparisons. Thus, we successfully implemented and empirically validated an easy-to-handle strategy to tackle poor reproducibility in single-laboratory studies. Since other experiments within different life science disciplines share the main characteristics with the investigation reported here, these studies are likely to also benefit from this approach.
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Affiliation(s)
- Vanessa Tabea von Kortzfleisch
- Department of Behavioural Biology, University of Münster, Badestraße 13, Münster, Germany.
- Otto Creutzfeldt Center for Cognitive and Behavioral Neuroscience, University of Münster, Münster, Germany.
| | - Natasha A Karp
- Data Sciences and Quantitative Biology, Discovery Sciences, R&D, AstraZeneca, Cambridge, UK
| | - Rupert Palme
- Department of Biomedical Sciences, University of Veterinary Medicine, Vienna, Austria
| | - Sylvia Kaiser
- Department of Behavioural Biology, University of Münster, Badestraße 13, Münster, Germany
- Otto Creutzfeldt Center for Cognitive and Behavioral Neuroscience, University of Münster, Münster, Germany
| | - Norbert Sachser
- Department of Behavioural Biology, University of Münster, Badestraße 13, Münster, Germany
- Otto Creutzfeldt Center for Cognitive and Behavioral Neuroscience, University of Münster, Münster, Germany
| | - S Helene Richter
- Department of Behavioural Biology, University of Münster, Badestraße 13, Münster, Germany.
- Otto Creutzfeldt Center for Cognitive and Behavioral Neuroscience, University of Münster, Münster, Germany.
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48
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Neves K, Guercio GD, Anjos-Travassos Y, Costa S, Perozzo A, Montezuma K, Herculano-Houzel S, Panizzutti R. The relationship between the number of neurons and behavioral performance in Swiss mice. Neurosci Lett 2020; 735:135202. [PMID: 32599318 DOI: 10.1016/j.neulet.2020.135202] [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: 05/15/2020] [Accepted: 06/21/2020] [Indexed: 10/24/2022]
Abstract
Neuronal number varies by several orders of magnitude across species, and has been proposed to predict cognitive capability across species. Remarkably, numbers of neurons vary across individual mice by a factor of 2 or more. We directly addressed the question of whether there is a relationship between performance in behavioral tests and the number of neurons in functionally relevant structures in the mouse brain. Naïve Swiss mice went through a battery of behavioral tasks designed to measure cognitive, motor and olfactory skills. We estimated the number of neurons in different brain regions (cerebral cortex, hippocampus, olfactory bulb, cerebellum and remaining areas) and crossed the two datasets to test the a priori hypothesis of correlation between cognitive abilities and numbers of neurons. Surprisingly, performance in the behavioral tasks did not correlate strongly with number of neurons in any of the brain regions studied. Our results show that whereas neuronal number is a predictor of cognitive skills across species, it is not a good predictor of cognitive, sensory or motor ability across individuals within a species, which suggests that other factors are more relevant for explaining cognitive differences between individuals of the same species.
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Affiliation(s)
- Kleber Neves
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Brazil; Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Brazil.
| | - Gerson Duarte Guercio
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Brazil; Department of Psychiatry, University of Minnesota, 2312 S 6th St., Minneapolis, MN, United States.
| | - Yuri Anjos-Travassos
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Brazil
| | - Stella Costa
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Brazil
| | - Ananda Perozzo
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Brazil
| | - Karine Montezuma
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Brazil
| | - Suzana Herculano-Houzel
- Department of Psychology, Department of Biological Sciences, Vanderbilt Brain Institute, Vanderbilt University, United States
| | - Rogério Panizzutti
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Brazil; Instituto de Psiquiatria, Universidade Federal do Rio de Janeiro, Brazil
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49
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Golini E, Rigamonti M, Iannello F, De Rosa C, Scavizzi F, Raspa M, Mandillo S. A Non-invasive Digital Biomarker for the Detection of Rest Disturbances in the SOD1G93A Mouse Model of ALS. Front Neurosci 2020; 14:896. [PMID: 32982678 PMCID: PMC7490341 DOI: 10.3389/fnins.2020.00896] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 07/31/2020] [Indexed: 12/12/2022] Open
Abstract
Amyotrophic Lateral Sclerosis (ALS) is a devastating neurodegenerative disease that affects both central and peripheral nervous system, leading to the degeneration of motor neurons, which eventually results in muscle atrophy, paralysis, and death. Sleep disturbances are common in patients with ALS, leading to even further deteriorated quality of life. Investigating methods to potentially assess sleep and rest disturbances in animal models of ALS is thus of crucial interest. We used an automated home cage monitoring system (DVC®) to capture irregular activity patterns that can potentially be associated with sleep and rest disturbances and thus to the progression of ALS in the SOD1G93A mouse model. DVC® enables non-intrusive 24/7 long term animal activity monitoring, which we assessed together with body weight decline and neuromuscular function deterioration measured by grid hanging and grip strength tests in male and female mice from 7 until 24 weeks of age. We show that as the ALS progresses over time in SOD1G93A mice, activity patterns start becoming irregular, especially during day time, with frequent activity bouts that are neither observed in control mice nor in SOD1G93A at a younger age. The increasing irregularities of activity pattern are quantitatively captured by designing a novel digital biomarker, referred to as Regularity Disruption Index (RDI). We show that RDI is a robust measure capable of detecting home cage activity patterns that could be related to rest/sleep-related disturbances during the disease progression. Moreover, the RDI rise during the early symptomatic stage parallels grid hanging and body weight decline. The non-intrusive long-term continuous monitoring of animal activity enabled by DVC® has been instrumental in discovering novel activity patterns potentially correlated, once validated, with sleep and rest disturbances in the SOD1G93A mouse model of the ALS disease.
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Affiliation(s)
- Elisabetta Golini
- Institute of Biochemistry and Cell Biology-National Research Council (IBBC-CNR), CNR-Campus International Development (EMMA-INFRAFRONTIER-IMPC), Monterotondo, Italy
| | | | | | - Carla De Rosa
- Institute of Biochemistry and Cell Biology-National Research Council (IBBC-CNR), CNR-Campus International Development (EMMA-INFRAFRONTIER-IMPC), Monterotondo, Italy
| | - Ferdinando Scavizzi
- Institute of Biochemistry and Cell Biology-National Research Council (IBBC-CNR), CNR-Campus International Development (EMMA-INFRAFRONTIER-IMPC), Monterotondo, Italy
| | - Marcello Raspa
- Institute of Biochemistry and Cell Biology-National Research Council (IBBC-CNR), CNR-Campus International Development (EMMA-INFRAFRONTIER-IMPC), Monterotondo, Italy
| | - Silvia Mandillo
- Institute of Biochemistry and Cell Biology-National Research Council (IBBC-CNR), CNR-Campus International Development (EMMA-INFRAFRONTIER-IMPC), Monterotondo, Italy
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50
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Ohba T, Nakamura S, Shimazawa M, Hayashi Y, Kono H, Hara H. Protective effects of Huperzia serrata and its components against oxidative damage and cognitive dysfunction. PHARMANUTRITION 2020. [DOI: 10.1016/j.phanu.2020.100203] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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