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Vejar S, Pizarro IS, Pulgar-Sepúlveda R, Vicencio SC, Polit A, Amador CA, Del Rio R, Varas R, Orellana JA, Ortiz FC. A preclinical mice model of multiple sclerosis based on the toxin-induced double-site demyelination of callosal and cerebellar fibers. Biol Res 2024; 57:48. [PMID: 39034395 PMCID: PMC11265164 DOI: 10.1186/s40659-024-00529-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Accepted: 07/08/2024] [Indexed: 07/23/2024] Open
Abstract
BACKGROUND Multiple sclerosis (MS) is an irreversible progressive CNS pathology characterized by the loss of myelin (i.e. demyelination). The lack of myelin is followed by a progressive neurodegeneration triggering symptoms as diverse as fatigue, motor, locomotor and sensory impairments and/or bladder, cardiac and respiratory dysfunction. Even though there are more than fourteen approved treatments for reducing MS progression, there are still no cure for the disease. Thus, MS research is a very active field and therefore we count with different experimental animal models for studying mechanisms of demyelination and myelin repair, however, we still lack a preclinical MS model assembling demyelination mechanisms with relevant clinical-like signs. RESULTS Here, by inducing the simultaneous demyelination of both callosal and cerebellar white matter fibers by the double-site injection of lysolecithin (LPC), we were able to reproduce CNS demyelination, astrocyte recruitment and increases levels of proinflammatory cytokines levels along with motor, locomotor and urinary impairment, as well as cardiac and respiratory dysfunction, in the same animal model. Single site LPC-injections either in corpus callosum or cerebellum only, fails in to reproduce such a complete range of MS-like signs. CONCLUSION We here report that the double-site LPC injections treatment evoke a complex MS-like mice model. We hope that this experimental approach will help to deepen our knowledge about the mechanisms of demyelinated diseases such as MS.
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Affiliation(s)
- Sebastián Vejar
- Mechanisms of Myelin Formation and Repair Laboratory, Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile
| | - Ignacio S Pizarro
- Mechanisms of Myelin Formation and Repair Laboratory, Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile
| | - Raúl Pulgar-Sepúlveda
- Mechanisms of Myelin Formation and Repair Laboratory, Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile
| | - Sinay C Vicencio
- Mechanisms of Myelin Formation and Repair Laboratory, Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile
- Laboratory of Cardiorespiratory Control, Department of Physiology, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Andrés Polit
- Mechanisms of Myelin Formation and Repair Laboratory, Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile
| | - Cristian A Amador
- Faculty of Medicine and Science, Universidad San Sebastián, Santiago, Chile
| | - Rodrigo Del Rio
- Laboratory of Cardiorespiratory Control, Department of Physiology, Pontificia Universidad Católica de Chile, Santiago, Chile
- Department of Cell Biology and Physiology, School of Medicine, University of Kansas Medical Center, Kansas City, KS, United States
| | - Rodrigo Varas
- Facultad de Ciencias de Salud, Universidad Autónoma de Chile, 8910060, Santiago, Chile
| | - Juan A Orellana
- Departamento de Neurología, Escuela de Medicina and Centro Interdisciplinario de Neurociencias, Facultad de Medicina, Pontificia Universidad Católica de Chile, Marcoleta 391, 8330024, Santiago, Chile.
| | - Fernando C Ortiz
- Mechanisms of Myelin Formation and Repair Laboratory, Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile.
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Gemikonakli G, Mach J, Tran T, Wu H, Hilmer SN. Probing polypharmacy, ageing and sex effects on physical function using different tests. Fundam Clin Pharmacol 2024; 38:561-574. [PMID: 38247119 DOI: 10.1111/fcp.12978] [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: 06/24/2023] [Revised: 12/01/2023] [Accepted: 12/14/2023] [Indexed: 01/23/2024]
Abstract
BACKGROUND Ageing, sex and polypharmacy affect physical function. OBJECTIVES This mouse study investigates how ageing, sex and polypharmacy interact and affect grip strength, balance beam and wire hang, correlating and comparing the different test results between and within subgroups. METHODS Young (2.5 months) and old (21.5 months) C57BL/6 J male and female mice (n = 10-6/group) were assessed for physical function at baseline on grip strength, balance beam and wire hang with three trials of 60 s (WH60s) and one trial of 300 s (WH300s). Mice were randomised to control or diet containing a high Drug Burden Index (DBI, total anticholinergic and sedative drug exposure) polypharmacy regimen (metoprolol, simvastatin, citalopram, oxycodone and oxybutynin at therapeutic oral doses). Following 6-8 weeks of treatment, mice were reassessed. RESULTS High DBI polypharmacy and control mice both showed age group differences on all tests (p < 0.05). Only control mice showed sex differences, with females outperforming males on the WH60s and balance beam for old mice, WH300s for young mice (p < 0.05). Polypharmacy reduced grip strength in all subgroups (p < 0.05) and only in old females reduced wire hang time and cumulative behaviour and balance beam time and %walked (p < 0.05). Physical function assessments were all correlated with each other, with differences between subgroups (p < 0.05), and mice within subgroups showed interindividual variability in performance. CONCLUSION Age, sex and polypharmacy have variable effects on different tests, and behavioural measures are useful adjuvants to assessing performance. There was considerable within-group variability in change in measures over time. These findings can inform design and sample size of future studies.
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Affiliation(s)
- Gizem Gemikonakli
- Laboratory of Ageing and Pharmacology, Kolling Institute, Faculty of Medicine and Health, The University of Sydney and the Northern Sydney Local Health District, Sydney, New South Wales, Australia
| | - John Mach
- Laboratory of Ageing and Pharmacology, Kolling Institute, Faculty of Medicine and Health, The University of Sydney and the Northern Sydney Local Health District, Sydney, New South Wales, Australia
| | - Trang Tran
- Laboratory of Ageing and Pharmacology, Kolling Institute, Faculty of Medicine and Health, The University of Sydney and the Northern Sydney Local Health District, Sydney, New South Wales, Australia
| | - Harry Wu
- Laboratory of Ageing and Pharmacology, Kolling Institute, Faculty of Medicine and Health, The University of Sydney and the Northern Sydney Local Health District, Sydney, New South Wales, Australia
| | - Sarah N Hilmer
- Laboratory of Ageing and Pharmacology, Kolling Institute, Faculty of Medicine and Health, The University of Sydney and the Northern Sydney Local Health District, Sydney, New South Wales, Australia
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Kostin A, Alam MA, Saevskiy A, Alam MN. Chronic Astrocytic TNFα Production in the Preoptic-Basal Forebrain Causes Aging-like Sleep-Wake Disturbances in Young Mice. Cells 2024; 13:894. [PMID: 38891027 PMCID: PMC11171867 DOI: 10.3390/cells13110894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Revised: 05/06/2024] [Accepted: 05/17/2024] [Indexed: 06/20/2024] Open
Abstract
Sleep disruption is a frequent problem of advancing age, often accompanied by low-grade chronic central and peripheral inflammation. We examined whether chronic neuroinflammation in the preoptic and basal forebrain area (POA-BF), a critical sleep-wake regulatory structure, contributes to this disruption. We developed a targeted viral vector designed to overexpress tumor necrosis factor-alpha (TNFα), specifically in astrocytes (AAV5-GFAP-TNFα-mCherry), and injected it into the POA of young mice to induce heightened neuroinflammation within the POA-BF. Compared to the control (treated with AAV5-GFAP-mCherry), mice with astrocytic TNFα overproduction within the POA-BF exhibited signs of increased microglia activation, indicating a heightened local inflammatory milieu. These mice also exhibited aging-like changes in sleep-wake organization and physical performance, including (a) impaired sleep-wake functions characterized by disruptions in sleep and waking during light and dark phases, respectively, and a reduced ability to compensate for sleep loss; (b) dysfunctional VLPO sleep-active neurons, indicated by fewer neurons expressing c-fos after suvorexant-induced sleep; and (c) compromised physical performance as demonstrated by a decline in grip strength. These findings suggest that inflammation-induced dysfunction of sleep- and wake-regulatory mechanisms within the POA-BF may be a critical component of sleep-wake disturbances in aging.
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Affiliation(s)
- Andrey Kostin
- Research Service (151A3), Veterans Affairs Greater Los Angeles Healthcare System, Sepulveda, CA 91343, USA; (A.K.); (M.A.A.)
| | - Md. Aftab Alam
- Research Service (151A3), Veterans Affairs Greater Los Angeles Healthcare System, Sepulveda, CA 91343, USA; (A.K.); (M.A.A.)
- Department of Psychiatry, University of California, Los Angeles, CA 90025, USA
| | - Anton Saevskiy
- Scientific Research and Technology Center for Neurotechnology, Southern Federal University, 344006 Rostov-on-Don, Russia;
| | - Md. Noor Alam
- Research Service (151A3), Veterans Affairs Greater Los Angeles Healthcare System, Sepulveda, CA 91343, USA; (A.K.); (M.A.A.)
- Department of Medicine, University of California, Los Angeles, CA 90025, USA
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Khan MB, Alam H, Siddiqui S, Shaikh MF, Sharma A, Rehman A, Baban B, Arbab AS, Hess DC. Exercise Improves Cerebral Blood Flow and Functional Outcomes in an Experimental Mouse Model of Vascular Cognitive Impairment and Dementia (VCID). Transl Stroke Res 2024; 15:446-461. [PMID: 36689081 PMCID: PMC10363247 DOI: 10.1007/s12975-023-01124-w] [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: 10/05/2022] [Revised: 12/14/2022] [Accepted: 01/04/2023] [Indexed: 01/24/2023]
Abstract
Vascular cognitive impairment and dementia (VCID) are a growing threat to public health without any known treatment. The bilateral common carotid artery stenosis (BCAS) mouse model is valid for VCID. Previously, we have reported that remote ischemic postconditioning (RIPostC) during chronic cerebral hypoperfusion (CCH) induced by BCAS increases cerebral blood flow (CBF), improves cognitive function, and reduces white matter damage. We hypothesized that physical exercise (EXR) would augment CBF during CCH and prevent cognitive impairment in the BCAS model. BCAS was performed in C57/B6 mice of both sexes to establish CCH. One week after the BCAS surgery, mice were randomized to treadmill exercise once daily or no EXR for four weeks. CBF was monitored with an LSCI pre-, post, and 4 weeks post-BCAS. Cognitive testing was performed for post-BCAS after exercise training, and brain tissue was harvested for histopathology and biochemical test. BCAS led to chronic hypoperfusion resulting in impaired cognitive function and other functional outcomes. Histological examination revealed that BCAS caused changes in neuronal morphology and cell death in the cortex and hippocampus. Immunoblotting showed that BCAS was associated with a significant downregulate of AMPK and pAMPK and NOS3 and pNOS3. BCAS also decreased red blood cell (RBC) deformability. EXR therapy increased and sustained improved CBF and cognitive function, muscular strength, reduced cell death, and loss of white matter. EXR is effective in the BCAS model, improving CBF and cognitive function, reducing white matter damage, improving RBC deformability, and increasing RBC NOS3 and AMPK. The mechanisms by which EXR improves CBF and attenuates tissue damage need further investigation.
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Affiliation(s)
- Mohammad Badruzzaman Khan
- Department of Neurology, Medical College of Georgia, Augusta University, 1120 15thStreet, CA 1053, Augusta, GA, 30912, USA.
| | - Haroon Alam
- Department of Neurology, Medical College of Georgia, Augusta University, 1120 15thStreet, CA 1053, Augusta, GA, 30912, USA
| | - Shahneela Siddiqui
- Department of Neurology, Medical College of Georgia, Augusta University, 1120 15thStreet, CA 1053, Augusta, GA, 30912, USA
| | - Muhammad Fasih Shaikh
- Department of Neurology, Medical College of Georgia, Augusta University, 1120 15thStreet, CA 1053, Augusta, GA, 30912, USA
| | - Abhinav Sharma
- Department of Neurology, Medical College of Georgia, Augusta University, 1120 15thStreet, CA 1053, Augusta, GA, 30912, USA
| | - Amna Rehman
- Department of Neurology, Medical College of Georgia, Augusta University, 1120 15thStreet, CA 1053, Augusta, GA, 30912, USA
| | - Babak Baban
- Department of Oral Biology, Dental College of Georgia, Augusta University, Augusta, GA, 30912, USA
| | - Ali S Arbab
- Georgia Cancer Center, Augusta University, Augusta, GA, 30912, USA
| | - David C Hess
- Department of Neurology, Medical College of Georgia, Augusta University, 1120 15thStreet, CA 1053, Augusta, GA, 30912, USA
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Lundt S, Zhang N, Polo-Parada L, Wang X, Ding S. Dietary NMN supplementation enhances motor and NMJ function in ALS. Exp Neurol 2024; 374:114698. [PMID: 38266764 DOI: 10.1016/j.expneurol.2024.114698] [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: 10/16/2023] [Revised: 01/15/2024] [Accepted: 01/20/2024] [Indexed: 01/26/2024]
Abstract
Amyotrophic lateral sclerosis (ALS) is an adult-onset neurodegenerative disease that causes the degeneration of motor neurons in the motor cortex and spinal cord. Patients with ALS experience muscle weakness and atrophy in the limbs which eventually leads to paralysis and death. NAD+ is critical for energy metabolism, such as glycolysis and oxidative phosphorylation, but is also involved in non-metabolic cellular reactions. In the current study, we determined whether the supplementation of nicotinamide mononucleotide (NMN), an NAD+ precursor, in the diet had beneficial impacts on disease progression using a SOD1G93A mouse model of ALS. We found that the ALS mice fed with an NMN-supplemented diet (ALS+NMN mice) had modestly extended lifespan and exhibited delayed motor dysfunction. Using electrophysiology, we studied the effect of NMN on synaptic transmission at neuromuscular junctions (NMJs) in symptomatic of ALS mice (18 weeks old). ALS+NMN mice had larger end-plate potential (EPP) amplitudes and maintained better responses than ALS mice, and also had restored EPP facilitation. While quantal content was not affected by NMN, miniature EPP (mEPP) amplitude and frequency were elevated in ALS+NMN mice. NMN supplementation in diet also improved NMJ morphology, innervation, mitochondrial structure, and reduced reactive astrogliosis in the ventral horn of the lumbar spinal cord. Overall, our results indicate that dietary consumption of NMN can slow motor impairment, enhance NMJ function and improve healthspan of ALS mice.
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Affiliation(s)
- Samuel Lundt
- Interdisciplinary Neuroscience Program, University of Missouri, Columbia, MO 65211, United States of America; Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO 65211, United States of America
| | - Nannan Zhang
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO 65211, United States of America
| | - Luis Polo-Parada
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO 65211, United States of America; Department of Medical, Physiology and Pharmacology, University of Missouri, Columbia, MO 65211, United States of America
| | - Xinglong Wang
- Department of Pharmacology & Toxicology, University of Arizona, Tucson, AZ 85721, United States of America
| | - Shinghua Ding
- Interdisciplinary Neuroscience Program, University of Missouri, Columbia, MO 65211, United States of America; Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO 65211, United States of America; Department of Chemical and Biomedical Engineering, University of Missouri, Columbia, MO 65211, United States of America.
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6
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Liu L, Ding M, Wu J, Zhang Y, Wang Q, Wang N, Luo L, Yu K, Fan Y, Zhang J, Wu Y, Xiao X, Zhang Q. High-frequency repetitive transcranial magnetic stimulation promotes ipsilesional functional hyperemia and motor recovery in mice with ischemic stroke. Cereb Cortex 2024; 34:bhae074. [PMID: 38511722 DOI: 10.1093/cercor/bhae074] [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: 11/04/2023] [Revised: 02/05/2024] [Accepted: 02/06/2024] [Indexed: 03/22/2024] Open
Abstract
Neurovascular decoupling plays a significant role in dysfunction following an ischemic stroke. This study aimed to explore the effect of low- and high-frequency repetitive transcranial magnetic stimulation on neurovascular remodeling after ischemic stroke. To achieve this goal, we compared functional hyperemia, cerebral blood flow regulatory factors, and neurochemical transmitters in the peri-infract cortex 21 days after a photothrombotic stroke. Our findings revealed that low- and high-frequency repetitive transcranial magnetic stimulation increased the real-time cerebral blood flow in healthy mice and improved neurobehavioral outcomes after stroke. Furthermore, high-frequency (5-Hz) repetitive transcranial magnetic stimulation revealed stronger functional hyperemia recovery and increased the levels of post-synaptic density 95, neuronal nitric oxide synthase, phosphorylated-endothelial nitric oxide synthase, and vascular endothelial growth factor in the peri-infract cortex compared with low-frequency (1-Hz) repetitive transcranial magnetic stimulation. The magnetic resonance spectroscopy data showed that low- and high-frequency repetitive transcranial magnetic stimulation reduced neuronal injury and maintained excitation/inhibition balance. However, 5-Hz repetitive transcranial magnetic stimulation showed more significant regulation of excitatory and inhibitory neurotransmitters after stroke than 1-Hz repetitive transcranial magnetic stimulation. These results indicated that high-frequency repetitive transcranial magnetic stimulation could more effectively promote neurovascular remodeling after stroke, and specific repetitive transcranial magnetic stimulation frequencies might be used to selectively regulate the neurovascular unit.
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Affiliation(s)
- Li Liu
- Department of Rehabilitation Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Ming Ding
- Department of Rehabilitation Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China
- Behavioral and Cognitive Neuroscience Center, Institute of Science and Technology for Brain-Inspired Intelligence, Fudan University, Shanghai, China
| | - Junfa Wu
- Department of Rehabilitation Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Yuwen Zhang
- Institute of Science and Technology for Brain-Inspired Intelligence, Fudan University, Shanghai, China
| | - Qianfeng Wang
- Institute of Science and Technology for Brain-Inspired Intelligence, Fudan University, Shanghai, China
| | - Nianhong Wang
- Department of Rehabilitation Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Lu Luo
- Department of Rehabilitation Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Kewei Yu
- Department of Rehabilitation Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Yunhui Fan
- Department of Rehabilitation Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Jingjun Zhang
- Department of Rehabilitation Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Yi Wu
- Department of Rehabilitation Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Xiao Xiao
- Behavioral and Cognitive Neuroscience Center, Institute of Science and Technology for Brain-Inspired Intelligence, Fudan University, Shanghai, China
| | - Qun Zhang
- Department of Rehabilitation Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China
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7
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Thompson SD, Barrett KL, Rugel CL, Redmond R, Rudofski A, Kurian J, Curtin JL, Dayanidhi S, Lavasani M. Sex-specific preservation of neuromuscular function and metabolism following systemic transplantation of multipotent adult stem cells in a murine model of progeria. GeroScience 2024; 46:1285-1302. [PMID: 37535205 PMCID: PMC10828301 DOI: 10.1007/s11357-023-00892-5] [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: 06/13/2023] [Accepted: 07/25/2023] [Indexed: 08/04/2023] Open
Abstract
Onset and rates of sarcopenia, a disease characterized by a loss of muscle mass and function with age, vary greatly between sexes. Currently, no clinical interventions successfully arrest age-related muscle impairments since the decline is frequently multifactorial. Previously, we found that systemic transplantation of our unique adult multipotent muscle-derived stem/progenitor cells (MDSPCs) isolated from young mice-but not old-extends the health-span in DNA damage mouse models of progeria, a disease of accelerated aging. Additionally, induced neovascularization in the muscles and brain-where no transplanted cells were detected-strongly suggests a systemic therapeutic mechanism, possibly activated through circulating secreted factors. Herein, we used ZMPSTE24-deficient mice, a lamin A defect progeria model, to investigate the ability of young MDSPCs to preserve neuromuscular tissue structure and function. We show that progeroid ZMPST24-deficient mice faithfully exhibit sarcopenia and age-related metabolic dysfunction. However, systemic transplantation of young MDSPCs into ZMPSTE24-deficient progeroid mice sustained healthy function and histopathology of muscular tissues throughout their 6-month life span in a sex-specific manner. Indeed, female-but not male-mice systemically transplanted with young MDSPCs demonstrated significant preservation of muscle endurance, muscle fiber size, mitochondrial respirometry, and neuromuscular junction morphometrics. These novel findings strongly suggest that young MDSPCs modulate the systemic environment of aged animals by secreted rejuvenating factors to maintain a healthy homeostasis in a sex-specific manner and that the female muscle microenvironment remains responsive to exogenous regenerative cues in older age. This work highlights the age- and sex-related differences in neuromuscular tissue degeneration and the future prospect of preserving health in older adults with systemic regenerative treatments.
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Affiliation(s)
- Seth D Thompson
- Shirley Ryan AbilityLab, 355 E. Erie St, Chicago, IL, 60611, USA.
- Department of Physical Medicine and Rehabilitation, Northwestern University, Chicago, IL, 60611, USA.
- Northwestern University Interdepartmental Neuroscience (NUIN) Graduate Program, Northwestern University, Chicago, IL, 60611, USA.
| | - Kelsey L Barrett
- Shirley Ryan AbilityLab, 355 E. Erie St, Chicago, IL, 60611, USA
| | - Chelsea L Rugel
- Shirley Ryan AbilityLab, 355 E. Erie St, Chicago, IL, 60611, USA
- Department of Physical Medicine and Rehabilitation, Northwestern University, Chicago, IL, 60611, USA
- Northwestern University Interdepartmental Neuroscience (NUIN) Graduate Program, Northwestern University, Chicago, IL, 60611, USA
| | - Robin Redmond
- Shirley Ryan AbilityLab, 355 E. Erie St, Chicago, IL, 60611, USA
| | - Alexia Rudofski
- Shirley Ryan AbilityLab, 355 E. Erie St, Chicago, IL, 60611, USA
| | - Jacob Kurian
- Department of Biomedical Engineering, Northwestern University, Chicago, IL, 60611, USA
| | - Jodi L Curtin
- Shirley Ryan AbilityLab, 355 E. Erie St, Chicago, IL, 60611, USA
| | - Sudarshan Dayanidhi
- Shirley Ryan AbilityLab, 355 E. Erie St, Chicago, IL, 60611, USA
- Department of Physical Medicine and Rehabilitation, Northwestern University, Chicago, IL, 60611, USA
| | - Mitra Lavasani
- Shirley Ryan AbilityLab, 355 E. Erie St, Chicago, IL, 60611, USA.
- Department of Physical Medicine and Rehabilitation, Northwestern University, Chicago, IL, 60611, USA.
- Northwestern University Interdepartmental Neuroscience (NUIN) Graduate Program, Northwestern University, Chicago, IL, 60611, USA.
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Andreou T, Ishikawa-Learmonth Y, Bigger BW. Phenotypic characterisation of the Mucopolysaccharidosis Type I (MPSI) Idua-W392X mouse model reveals increased anxiety-related traits in female mice. Mol Genet Metab 2023; 139:107651. [PMID: 37473537 DOI: 10.1016/j.ymgme.2023.107651] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 07/05/2023] [Accepted: 07/07/2023] [Indexed: 07/22/2023]
Abstract
Mucopolysaccharidosis Type I (MPSI) is a rare inherited lysosomal storage disease that arises due to mutations in the IDUA gene. Defective alpha-L-iduronidase (IDUA) enzyme is unable to break down glucosaminoglycans (GAGs) within the lysosomes and, as a result, there is systemic accumulation of undegraded products in lysosomes throughout the body leading to multi-system disease. Here, we characterised the skeletal/craniofacial, neuromuscular and behavioural outcomes of the MPSI Idua-W392X mouse model. We demonstrate that Idua-W392X mice have gross craniofacial abnormalities, showed signs of kyphosis, and show signs of hypoactivity compared to wild-type mice. X-ray imaging analysis revealed significantly shorter and wider tibias and femurs, significantly wider snouts, increased skull width and significantly thicker zygomatic arch bones in Idua-W392X female mice compared to wild-type mice at 9 and 10.5 months of age. Idua-W392X mice display decreased muscle strength, especially in the forelimbs, which is already apparent from 3 months of age. Female Idua-W392X mice display hypoactivity in the open-field test from 9 months of age and anxiety-like behaviour at 10 months of age. As these behaviours have been identified in Hurler children, the MPSI Idua-W392X mouse model may be important for the investigation of new therapeutic approaches for MPSI-Hurler.
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Affiliation(s)
- Tereza Andreou
- Stem Cell and Neurotherapies Group, Faculty of Biology, Medicine and Health, The University of Manchester, United Kingdom
| | - Yuko Ishikawa-Learmonth
- Stem Cell and Neurotherapies Group, Faculty of Biology, Medicine and Health, The University of Manchester, United Kingdom
| | - Brian W Bigger
- Stem Cell and Neurotherapies Group, Faculty of Biology, Medicine and Health, The University of Manchester, United Kingdom.
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Kanazawa Y, Ikeda-Matsuo Y, Sato H, Nagano M, Koinuma S, Takahashi T, Suzuki H, Miyachi R, Shigeyoshi Y. Effects of Obesity in Old Age on the Basement Membrane of Skeletal Muscle in Mice. Int J Mol Sci 2023; 24:ijms24119209. [PMID: 37298161 DOI: 10.3390/ijms24119209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 05/19/2023] [Accepted: 05/21/2023] [Indexed: 06/12/2023] Open
Abstract
Obesity and aging are known to affect the skeletal muscles. Obesity in old age may result in a poor basement membrane (BM) construction response, which serves to protect the skeletal muscle, thus making the skeletal muscle more vulnerable. In this study, older and young male C57BL/6J mice were divided into two groups, each fed a high-fat or regular diet for eight weeks. A high-fat diet decreased the relative gastrocnemius muscle weight in both age groups, and obesity and aging individually result in a decline in muscle function. Immunoreactivity of collagen IV, the main component of BM, BM width, and BM-synthetic factor expression in young mice on a high-fat diet were higher than that in young mice on a regular diet, whereas such changes were minimal in obese older mice. Furthermore, the number of central nuclei fibers in obese older mice was higher than in old mice fed a regular diet and young mice fed a high-fat diet. These results suggest that obesity at a young age promotes skeletal muscle BM formation in response to weight gain. In contrast, this response is less pronounced in old age, suggesting that obesity in old age may lead to muscle fragility.
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Affiliation(s)
- Yuji Kanazawa
- Department of Physical Therapy, Hokuriku University, Ishikawa, Kanazawa 920-1180, Japan
- Department of Anatomy and Neurobiology, Faculty of Medicine, Kindai University, Ohnohigashi, Osakasayama 589-8511, Japan
| | - Yuri Ikeda-Matsuo
- Department of Clinical Pharmacology, Hokuriku University, Ishikawa, Kanazawa 920-1181, Japan
| | - Hiaki Sato
- Department of Medical Technology and Clinical Engineering, Hokuriku University, Ishikawa, Kanazawa 920-1180, Japan
| | - Mamoru Nagano
- Department of Anatomy and Neurobiology, Faculty of Medicine, Kindai University, Ohnohigashi, Osakasayama 589-8511, Japan
| | - Satoshi Koinuma
- Department of Anatomy and Neurobiology, Faculty of Medicine, Kindai University, Ohnohigashi, Osakasayama 589-8511, Japan
| | - Tatsuo Takahashi
- Department of Clinical Pharmacology, Hokuriku University, Ishikawa, Kanazawa 920-1181, Japan
| | - Hirokazu Suzuki
- Department of Synthetic Chemistry, Hokuriku University, Ishikawa, Kanazawa 920-1181, Japan
| | - Ryo Miyachi
- Department of Physical Therapy, Hokuriku University, Ishikawa, Kanazawa 920-1180, Japan
| | - Yasufumi Shigeyoshi
- Department of Anatomy and Neurobiology, Faculty of Medicine, Kindai University, Ohnohigashi, Osakasayama 589-8511, Japan
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10
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Wang X, Wang G, Yang H, Fu S, He Y, Li F, Wang H, Wang Z. A mouse model of peripheral nerve injury induced by Japanese encephalitis virus. PLoS Negl Trop Dis 2022; 16:e0010961. [PMID: 36441775 PMCID: PMC9731479 DOI: 10.1371/journal.pntd.0010961] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 12/08/2022] [Accepted: 11/16/2022] [Indexed: 11/29/2022] Open
Abstract
Japanese encephalitis virus (JEV) is the most important cause of acute encephalitis in Eastern/Southern Asia. Infection with this virus also induces peripheral nerve injury. However, the disease pathogenesis is still not completely understood. Reliable animal models are needed to investigate the molecular pathogenesis of this condition. We studied the effect of Japanese encephalitis virus infection in C57BL/6 mice after a subcutaneous challenge. Limb paralysis was determined in mice using behavioral tests, including a viral paralysis scale and the hanging wire test, as well as by changes in body weight. Nerve conduction velocity and electromyography testing indicated the presence of demyelinating neuropathy of the sciatic nerve. Pathological changes in neural tissues were examined by immunofluorescence and transmission electron microscopy, which confirmed that the predominant pathologic change was demyelination. Although Western blots confirmed the presence of the virus in neural tissue, additional studies demonstrated that an immune-induced inflammatory response resulted in severe never injury. Immunofluorescence confirmed the presence of Japanese encephalitis virus in the brains of infected mice, and an inflammatory reaction was observed with hematoxylin-eosin staining as well. However, these observations were inconsistent at the time of paralysis onset. In summary, our results demonstrated that Japanese encephalitis virus infection could cause inflammatory demyelination of the peripheral nervous system in C57BL/6 mice.
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Affiliation(s)
- Xiaoli Wang
- The NO.1 People’s Hospital of Shizuishan, Shizuishan, China
- Ningxia Medical University, Yinchuan, China
| | | | - Huan Yang
- Ningxia Medical University, Yinchuan, China
- General Hospital of Ningxia Medical University, Yinchuan, China
| | - Shihong Fu
- Department of Arbovirus, NHC Key Laboratory of Biosafety, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
- State Key Laboratory for Infectious Disease Prevention and Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Ying He
- Department of Arbovirus, NHC Key Laboratory of Biosafety, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
- State Key Laboratory for Infectious Disease Prevention and Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Fan Li
- Department of Arbovirus, NHC Key Laboratory of Biosafety, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
- State Key Laboratory for Infectious Disease Prevention and Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Huanyu Wang
- Department of Arbovirus, NHC Key Laboratory of Biosafety, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
- State Key Laboratory for Infectious Disease Prevention and Control, Chinese Center for Disease Control and Prevention, Beijing, China
- * E-mail: (HYW); (ZHW)
| | - Zhenhai Wang
- Neurology Center, General Hospital of Ningxia Medical University, Yinchuan, China
- Diagnosis and Treatment Engineering Technology Research Center of Nervous System Diseases of Ningxia Hui Autonomous Region, Yinchuan, China
- * E-mail: (HYW); (ZHW)
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11
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Morotti M, Garofalo S, Cocozza G, Antonangeli F, Bianconi V, Mozzetta C, De Stefano ME, Capitani R, Wulff H, Limatola C, Catalano M, Grassi F. Muscle Damage in Dystrophic mdx Mice Is Influenced by the Activity of Ca2+-Activated KCa3.1 Channels. Life (Basel) 2022; 12:life12040538. [PMID: 35455028 PMCID: PMC9025295 DOI: 10.3390/life12040538] [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: 02/28/2022] [Revised: 03/30/2022] [Accepted: 03/31/2022] [Indexed: 11/16/2022] Open
Abstract
Duchenne muscular dystrophy (DMD) is an X-linked disease, caused by a mutant dystrophin gene, leading to muscle membrane instability, followed by muscle inflammation, infiltration of pro-inflammatory macrophages and fibrosis. The calcium-activated potassium channel type 3.1 (KCa3.1) plays key roles in controlling both macrophage phenotype and fibroblast proliferation, two critical contributors to muscle damage. In this work, we demonstrate that pharmacological blockade of the channel in the mdx mouse model during the early degenerative phase favors the acquisition of an anti-inflammatory phenotype by tissue macrophages and reduces collagen deposition in muscles, with a concomitant reduction of muscle damage. As already observed with other treatments, no improvement in muscle performance was observed in vivo. In conclusion, this work supports the idea that KCa3.1 channels play a contributing role in controlling damage-causing cells in DMD. A more complete understanding of their function could lead to the identification of novel therapeutic approaches.
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Affiliation(s)
- Marta Morotti
- Department of Physiology and Pharmacology, Sapienza University of Rome, 00185 Rome, Italy; (M.M.); (S.G.); (R.C.); (M.C.)
| | - Stefano Garofalo
- Department of Physiology and Pharmacology, Sapienza University of Rome, 00185 Rome, Italy; (M.M.); (S.G.); (R.C.); (M.C.)
| | - Germana Cocozza
- Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Neuromed, 86077 Pozzilli, Italy; (G.C.); (C.L.)
| | - Fabrizio Antonangeli
- Institute of Molecular Biology and Pathology-National Research Council (CNR), Department of Molecular Medicine, Sapienza University of Rome, 00185 Rome, Italy;
| | - Valeria Bianconi
- Institute of Molecular Biology and Pathology-National Research Council (CNR), Department of Biology and Biotechnology, Sapienza University of Rome, 00185 Rome, Italy; (V.B.); (C.M.)
| | - Chiara Mozzetta
- Institute of Molecular Biology and Pathology-National Research Council (CNR), Department of Biology and Biotechnology, Sapienza University of Rome, 00185 Rome, Italy; (V.B.); (C.M.)
| | - Maria Egle De Stefano
- Department of Biology and Biotechnology, Sapienza University of Rome, 00185 Rome, Italy;
| | - Riccardo Capitani
- Department of Physiology and Pharmacology, Sapienza University of Rome, 00185 Rome, Italy; (M.M.); (S.G.); (R.C.); (M.C.)
| | - Heike Wulff
- Department of Pharmacology, University of California, Davis, CA 95616, USA;
| | - Cristina Limatola
- Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Neuromed, 86077 Pozzilli, Italy; (G.C.); (C.L.)
- Laboratory Affiliated to Istituto Pasteur Italia, Department of Physiology and Pharmacology, Sapienza University of Rome, 00185 Rome, Italy
| | - Myriam Catalano
- Department of Physiology and Pharmacology, Sapienza University of Rome, 00185 Rome, Italy; (M.M.); (S.G.); (R.C.); (M.C.)
| | - Francesca Grassi
- Department of Physiology and Pharmacology, Sapienza University of Rome, 00185 Rome, Italy; (M.M.); (S.G.); (R.C.); (M.C.)
- Correspondence:
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12
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Chae SY, Jeong E, Kang S, Yim Y, Kim JS, Min DH. Rationally designed nanoparticle delivery of Cas9 ribonucleoprotein for effective gene editing. J Control Release 2022; 345:108-119. [PMID: 35247491 DOI: 10.1016/j.jconrel.2022.02.035] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 02/25/2022] [Accepted: 02/28/2022] [Indexed: 11/18/2022]
Abstract
Programmable endonucleases such as CRISPR/Cas9 system emerge as a promising tool to treat genetic and non-genetic diseases such as hypercholesterolemia, Duchenne muscular dystrophy, and cancer. However, the lack of safe and efficient vehicles that enable intracellular delivery of CRISPR/Cas9 endonuclease is a big hurdle for its therapeutic applications. Here, we employed porous nanoparticle for the Cas9 ribonucleoprotein (RNP) delivery and achieved efficient knockout of target genes in vitro and in vivo. The porous nanoparticle, called 'BALL', enabled safe and direct intracellular Cas9 RNP delivery by improving bioavailability and serum stability. The BALL-mediated delivery of Cas9 RNP showed superior indel efficiency of about 40% in vitro and 20% in vivo in a model system employing green fluorescent protein (GFP). More importantly, intramuscular injection of the Cas9 RNP-BALL complex targeting the myostatin (MSTN) gene which is known to suppress muscle growth achieved successful knockout of the MSTN gene, resulting in the increase of muscle and the improved motor functions. Thus, we believe that the BALL is a promising delivery system for CRISPR-based genome editing technology, which can be applied to the treatment of various genetic diseases.
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Affiliation(s)
- Se-Youl Chae
- Department of Chemistry, Seoul National University, Seoul 08826, Republic of Korea
| | - Euihwan Jeong
- Department of Chemistry, Seoul National University, Seoul 08826, Republic of Korea; Center for Genome Engineering, Institute for Basic Science (IBS), Seoul, Republic of Korea
| | - Seounghun Kang
- Department of Chemistry, Seoul National University, Seoul 08826, Republic of Korea
| | - Yeajee Yim
- Department of Chemistry, Seoul National University, Seoul 08826, Republic of Korea
| | - Jin-Soo Kim
- Center for Genome Engineering, Institute for Basic Science (IBS), Seoul, Republic of Korea.
| | - Dal-Hee Min
- Department of Chemistry, Seoul National University, Seoul 08826, Republic of Korea; Institute of BioTherapeutics Convergence Technology, Lemonex Inc., Seoul 06683, Republic of Korea.
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13
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Restoration of HDAC1 Enzymatic Activity after Stroke Protects Neurons from Ischemia/Reperfusion Damage and Attenuates Behavioral Deficits in Rats. Int J Mol Sci 2021; 22:ijms221910654. [PMID: 34638996 PMCID: PMC8508747 DOI: 10.3390/ijms221910654] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 09/25/2021] [Accepted: 09/27/2021] [Indexed: 02/07/2023] Open
Abstract
A therapeutic approach for promoting neuroprotection and brain functional regeneration after strokes is still lacking. Histone deacetylase 1 (HDAC1), which belongs to the histone deacetylase family, is involved in the transcriptional repression of cell-cycle-modulated genes and DNA damage repair during neurodegeneration. Our previous data showed that the protein level and enzymatic activity of HDAC1 are deregulated in stroke pathogenesis. A novel compound named 5104434 exhibits efficacy to selectively activate HDAC1 enzymatic function in neurodegeneration, but its potential in stroke therapy is still unknown. In this study, we adopted an induced rat model with cerebral ischemia using the vessel dilator endothelin-1 to evaluate the potential of compound 5104434. Our results indicated compound 5104434 selectively restored HDAC1 enzymatic activity after oxygen and glucose deprivation, preserved neurite morphology, and protected neurons from ischemic damage in vitro. In addition, compound 5104434 attenuated the infarct volume, neuronal loss, apoptosis, DNA damage, and DNA breaks in cerebral ischemia rats. It further ameliorated the behavioral outcomes of neuromuscular response, balance, forepaw strength, and functional recovery. Collectively, our data support the efficacy of compound 5104434 in stroke therapy and contend that it can be considered for clinical trial evaluation.
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14
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Mach J, Gemikonakli G, Logan C, Vander Wyk B, Allore H, Ekambareshwar S, Kane AE, Howlett SE, de Cabo R, Le Couteur DG, Hilmer SN. Chronic Polypharmacy with Increasing Drug Burden Index Exacerbates Frailty and Impairs Physical Function, with Effects Attenuated by Deprescribing, in Aged Mice. J Gerontol A Biol Sci Med Sci 2021; 76:1010-1018. [PMID: 32147704 DOI: 10.1093/gerona/glaa060] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Indexed: 12/15/2022] Open
Abstract
Polypharmacy (use of ≥5 medications) and increasing Drug Burden Index (DBI) score (measure of person's total exposure to anticholinergic/sedative medications) are associated with impaired physical function in observational studies of older adults. Deprescribing, the supervised withdrawal of medications for which harms outweigh benefits for an individual, may be a useful intervention. Current knowledge is limited to clinical observational studies that are unable to determine causality. Here, we establish a preclinical model that investigates the effects of chronic polypharmacy, increasing DBI, and deprescribing on global health outcomes in aging. In a longitudinal study, middle-aged (12 months) male C57BL/6J (B6) mice were administered control feed or feed and/or water containing polypharmacy or monotherapy with different DBI scores. At 21 months, each treatment group was subdivided (stratified by frailty at 21 months) to either continue on treatment for life or to have treatment withdrawn (deprescribed). Frailty and physical function were evaluated at 12, 15, 18, and 24 months, and were analyzed using a mixed modeling approach. Polypharmacy with increasing DBI and monotherapy with citalopram caused mice to become frailer, less mobile, and impaired their strength and functional activities. Critically, deprescribing in old age reversed a number of these outcomes. This is the first preclinical study to demonstrate that chronic polypharmacy with increasing DBI augments frailty and impairs function in old age, and that drug withdrawal in old age reversed these outcomes. It was not the number of drugs (polypharmacy) but the type and dose of drugs (DBI) that caused adverse geriatric outcomes.
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Affiliation(s)
- John Mach
- Laboratory of Ageing and Pharmacology, Kolling Institute of Medical Research, Royal North Shore Hospital and University of Sydney, St Leonards, New South Wales, Australia
- Departments of Clinical Pharmacology and Aged Care, Royal North Shore Hospital, St Leonards, New South Wales, Australia
- Faculty of Medicine and Health, The University of Sydney, New South Wales, Australia
| | - Gizem Gemikonakli
- Laboratory of Ageing and Pharmacology, Kolling Institute of Medical Research, Royal North Shore Hospital and University of Sydney, St Leonards, New South Wales, Australia
- Faculty of Medicine and Health, The University of Sydney, New South Wales, Australia
| | - Caitlin Logan
- Laboratory of Ageing and Pharmacology, Kolling Institute of Medical Research, Royal North Shore Hospital and University of Sydney, St Leonards, New South Wales, Australia
- Faculty of Medicine and Health, The University of Sydney, New South Wales, Australia
| | - Brent Vander Wyk
- Department of Internal Medicine, Yale University, New Haven, Connecticut
| | - Heather Allore
- Department of Internal Medicine, Yale University, New Haven, Connecticut
- Department of Biostatistics, Yale School of Public Health, New Haven, Connecticut
| | - Swathi Ekambareshwar
- Laboratory of Ageing and Pharmacology, Kolling Institute of Medical Research, Royal North Shore Hospital and University of Sydney, St Leonards, New South Wales, Australia
- Faculty of Medicine and Health, The University of Sydney, New South Wales, Australia
| | - Alice E Kane
- Faculty of Medicine and Health, The University of Sydney, New South Wales, Australia
- School of Life and Environmental Sciences, Harvard Medical School, Boston, Massachusetts
| | - Susan E Howlett
- Departments of Pharmacology and Medicine (Geriatric Medicine), Dalhousie University, Halifax, Canada
| | - Rafael de Cabo
- Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, Maryland
| | - David G Le Couteur
- Faculty of Medicine and Health, The University of Sydney, New South Wales, Australia
- Ageing and Alzhiemers Institute (AAAI), Centre for Education and Research on Ageing (CERA) and ANZAC Research Institute, Concord Hospital, Sydney, New South Wales, Australia
- Charles Perkins Centre, University of Sydney, New South Wales, Australia
| | - Sarah N Hilmer
- Laboratory of Ageing and Pharmacology, Kolling Institute of Medical Research, Royal North Shore Hospital and University of Sydney, St Leonards, New South Wales, Australia
- Departments of Clinical Pharmacology and Aged Care, Royal North Shore Hospital, St Leonards, New South Wales, Australia
- Faculty of Medicine and Health, The University of Sydney, New South Wales, Australia
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15
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Aguilera Y, Mellado-Damas N, Olmedo-Moreno L, López V, Panadero-Morón C, Benito M, Guerrero-Cázares H, Márquez-Vega C, Martín-Montalvo A, Capilla-González V. Preclinical Safety Evaluation of Intranasally Delivered Human Mesenchymal Stem Cells in Juvenile Mice. Cancers (Basel) 2021; 13:cancers13051169. [PMID: 33803160 PMCID: PMC7963187 DOI: 10.3390/cancers13051169] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 03/03/2021] [Accepted: 03/05/2021] [Indexed: 12/14/2022] Open
Abstract
Simple Summary The concept of utilizing mesenchymal stem cells for the treatment of central nervous system disorders has progressed from preclinical studies to clinical trials. While promising, the effectiveness of cell therapy is hampered by the route used to deliver cells into the brain. In this context, intranasal cell administration has boomed over the past few years as an effective cell delivery method. However, comprehensive safety studies are required before translation to the clinic. Our study shed light on how intranasally administrated mesenchymal stem cells may be used to safely treat neurological disorders. Abstract Mesenchymal stem cell (MSC)-based therapy is a promising therapeutic approach in the management of several pathologies, including central nervous system diseases. Previously, we demonstrated the therapeutic potential of human adipose-derived MSCs for neurological sequelae of oncological radiotherapy using the intranasal route as a non-invasive delivery method. However, a comprehensive investigation of the safety of intranasal MSC treatment should be performed before clinical applications. Here, we cultured human MSCs in compliance with quality control standards and administrated repeated doses of cells into the nostrils of juvenile immunodeficient mice, mimicking the design of a subsequent clinical trial. Short- and long-term effects of cell administration were evaluated by in vivo and ex vivo studies. No serious adverse events were reported on mouse welfare, behavioral performances, and blood plasma analysis. Magnetic resonance study and histological analysis did not reveal tumor formation or other abnormalities in the examined organs of mice receiving MSCs. Biodistribution study reveals a progressive disappearance of transplanted cells that was further supported by an absent expression of human GAPDH gene in the major organs of transplanted mice. Our data indicate that the intranasal application of MSCs is a safe, simple and non-invasive strategy and encourage its use in future clinical trials.
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Affiliation(s)
- Yolanda Aguilera
- Andalusian Molecular Biology and Regenerative Medicine Centre (CABIMER)-CSIC-US-UPO, Department of Regeneration and Cell Therapy, 41092 Seville, Spain; (Y.A.); (N.M.-D.); (L.O.-M.); (V.L.); (C.P.-M.); (A.M.-M.)
| | - Nuria Mellado-Damas
- Andalusian Molecular Biology and Regenerative Medicine Centre (CABIMER)-CSIC-US-UPO, Department of Regeneration and Cell Therapy, 41092 Seville, Spain; (Y.A.); (N.M.-D.); (L.O.-M.); (V.L.); (C.P.-M.); (A.M.-M.)
| | - Laura Olmedo-Moreno
- Andalusian Molecular Biology and Regenerative Medicine Centre (CABIMER)-CSIC-US-UPO, Department of Regeneration and Cell Therapy, 41092 Seville, Spain; (Y.A.); (N.M.-D.); (L.O.-M.); (V.L.); (C.P.-M.); (A.M.-M.)
| | - Víctor López
- Andalusian Molecular Biology and Regenerative Medicine Centre (CABIMER)-CSIC-US-UPO, Department of Regeneration and Cell Therapy, 41092 Seville, Spain; (Y.A.); (N.M.-D.); (L.O.-M.); (V.L.); (C.P.-M.); (A.M.-M.)
| | - Concepción Panadero-Morón
- Andalusian Molecular Biology and Regenerative Medicine Centre (CABIMER)-CSIC-US-UPO, Department of Regeneration and Cell Therapy, 41092 Seville, Spain; (Y.A.); (N.M.-D.); (L.O.-M.); (V.L.); (C.P.-M.); (A.M.-M.)
| | - Marina Benito
- Research Magnetic Resonance Unit, Hospital Nacional de Parapléjicos, 45004 Toledo, Spain;
| | | | | | - Alejandro Martín-Montalvo
- Andalusian Molecular Biology and Regenerative Medicine Centre (CABIMER)-CSIC-US-UPO, Department of Regeneration and Cell Therapy, 41092 Seville, Spain; (Y.A.); (N.M.-D.); (L.O.-M.); (V.L.); (C.P.-M.); (A.M.-M.)
| | - Vivian Capilla-González
- Andalusian Molecular Biology and Regenerative Medicine Centre (CABIMER)-CSIC-US-UPO, Department of Regeneration and Cell Therapy, 41092 Seville, Spain; (Y.A.); (N.M.-D.); (L.O.-M.); (V.L.); (C.P.-M.); (A.M.-M.)
- Correspondence:
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16
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Rubio-Atonal LF, Serrano-García N, Limón-Pacheco JH, Pedraza-Chaverri J, Orozco-Ibarra M. Cobalt protoporphyrin decreases food intake, body weight, and the number of neurons in the Nucleus Accumbens in female rats. Brain Res 2021; 1758:147337. [PMID: 33548272 DOI: 10.1016/j.brainres.2021.147337] [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: 10/06/2020] [Revised: 01/26/2021] [Accepted: 01/27/2021] [Indexed: 02/07/2023]
Abstract
Cobalt protoporphyrin (CoPP) is a potent heme oxygenase-1 inductor that produces temporary hypophagia and chronic weight loss. A complete description of this effect and the underlying mechanisms are unknown. In this work, we challenged the ability of CoPP to produce changes in rat behavior and cellular alterations in the Nucleus Accumbens that would explain those effects. We subcutaneously administered 25 µmol/kgbody weight CoPP in female rats and determined body weight, food intake, hyperactivity, and anxiety-like behavior, as well as the number of neurons and glial cells in the Nucleus Accumbens. CoPP significantly reduced food intake, water consumption, and body weight. Behavioral tests showed that anxiety-like behaviors and locomotor activity were not modified five days after the administration of CoPP. We also found a reduced number of neurons in the Nucleus Accumbens Shell. The above results could be relevant to diseases like anorexia, so it is necessary to deepen the study about the molecular mechanisms involved in reducing the food intake and weight loss elicited by CoPP.
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Affiliation(s)
- Luis Fernando Rubio-Atonal
- Laboratorio de Neurobiología Molecular y Celular, Instituto Nacional de Neurología y Neurocirugía, Manuel Velasco Suárez, Av. Insurgentes Sur # 3877, La Fama, Alcaldía Tlalpan, CP 14269, Ciudad de México, Mexico
| | - Norma Serrano-García
- Laboratorio de Neurobiología Molecular y Celular, Instituto Nacional de Neurología y Neurocirugía, Manuel Velasco Suárez, Av. Insurgentes Sur # 3877, La Fama, Alcaldía Tlalpan, CP 14269, Ciudad de México, Mexico
| | - Jorge Humberto Limón-Pacheco
- Laboratorio de Biología Celular y Tisular, Escuela Militar de Medicina, Centro Militar de Ciencias de la Salud, Secretaría de la Defensa Nacional, Cerrada de Palomas S/N, Lomas de San Isidro, Alcaldía Miguel Hidalgo, CP 11200, Ciudad de México, Mexico
| | - José Pedraza-Chaverri
- Departamento de Biología, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, Alcaldía Coyoacán, CP 04510, Ciudad de México, Mexico
| | - Marisol Orozco-Ibarra
- Laboratorio de Neurobiología Molecular y Celular, Instituto Nacional de Neurología y Neurocirugía, Manuel Velasco Suárez, Av. Insurgentes Sur # 3877, La Fama, Alcaldía Tlalpan, CP 14269, Ciudad de México, Mexico.
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17
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Underwood R, Gannon M, Pathak A, Kapa N, Chandra S, Klop A, Yacoubian TA. 14-3-3 mitigates alpha-synuclein aggregation and toxicity in the in vivo preformed fibril model. Acta Neuropathol Commun 2021; 9:13. [PMID: 33413679 PMCID: PMC7792107 DOI: 10.1186/s40478-020-01110-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 12/19/2020] [Indexed: 12/26/2022] Open
Abstract
Alpha-synuclein (αsyn) is the key component of proteinaceous aggregates termed Lewy Bodies that pathologically define a group of disorders known as synucleinopathies, including Parkinson's Disease (PD) and Dementia with Lewy Bodies. αSyn is hypothesized to misfold and spread throughout the brain in a prion-like fashion. Transmission of αsyn necessitates the release of misfolded αsyn from one cell and the uptake of that αsyn by another, in which it can template the misfolding of endogenous αsyn upon cell internalization. 14-3-3 proteins are a family of highly expressed brain proteins that are neuroprotective in multiple PD models. We have previously shown that 14-3-3θ acts as a chaperone to reduce αsyn aggregation, cell-to-cell transmission, and neurotoxicity in the in vitro pre-formed fibril (PFF) model. In this study, we expanded our studies to test the impact of 14-3-3s on αsyn toxicity in the in vivo αsyn PFF model. We used both transgenic expression models and adenovirus associated virus (AAV)-mediated expression to examine whether 14-3-3 manipulation impacts behavioral deficits, αsyn aggregation, and neuronal counts in the PFF model. 14-3-3θ transgene overexpression in cortical and amygdala regions rescued social dominance deficits induced by PFFs at 6 months post injection, whereas 14-3-3 inhibition by transgene expression of the competitive 14-3-3 peptide inhibitor difopein in the cortex and amygdala accelerated social dominance deficits. The behavioral rescue by 14-3-3θ overexpression was associated with delayed αsyn aggregation induced by PFFs in these brain regions. Conversely, 14-3-3 inhibition by difopein in the cortex and amygdala accelerated αsyn aggregation and reduction in NECAB1-positive neuron counts induced by PFFs. 14-3-3θ overexpression by AAV in the substantia nigra (SN) also delayed αsyn aggregation in the SN and partially rescued PFF-induced reduction in tyrosine hydroxylase (TH)-positive dopaminergic cells in the SN. 14-3-3 inhibition in the SN accelerated nigral αsyn aggregation and enhanced PFF-induced reduction in TH-positive dopaminergic cells. These data indicate a neuroprotective role for 14-3-3θ against αsyn toxicity in vivo.
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Affiliation(s)
- Rachel Underwood
- Department of Neurology, Center for Neurodegeneration and Experimental Therapeutics, University of Alabama at Birmingham, Birmingham, AL 35294 USA
- Center for Neurodegenerative Disease Research, Perelman School of Medicine at the University of Pennsylvania, Maloney Building, 3rd Floor, 3600 Spruce Street, Philadelphia, PA 19104-2676 USA
| | - Mary Gannon
- Department of Neurology, Center for Neurodegeneration and Experimental Therapeutics, University of Alabama at Birmingham, Birmingham, AL 35294 USA
| | - Aneesh Pathak
- Department of Neurology, Center for Neurodegeneration and Experimental Therapeutics, University of Alabama at Birmingham, Birmingham, AL 35294 USA
| | - Navya Kapa
- Department of Neurology, Center for Neurodegeneration and Experimental Therapeutics, University of Alabama at Birmingham, Birmingham, AL 35294 USA
| | - Sidhanth Chandra
- Department of Neurology, Center for Neurodegeneration and Experimental Therapeutics, University of Alabama at Birmingham, Birmingham, AL 35294 USA
- Medical Scientist Training Program, Northwestern University Feinberg School of Medicine, Chicago, IL 60611 USA
| | - Alyssa Klop
- Department of Neurology, Center for Neurodegeneration and Experimental Therapeutics, University of Alabama at Birmingham, Birmingham, AL 35294 USA
| | - Talene A. Yacoubian
- Department of Neurology, Center for Neurodegeneration and Experimental Therapeutics, University of Alabama at Birmingham, Birmingham, AL 35294 USA
- Civitan International Research Center, Room 510A, 1719 Sixth Avenue South, Birmingham, AL 35294 USA
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18
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Chen TJ, Feng Y, Liu T, Wu TT, Chen YJ, Li X, Li Q, Wu YC. Fisetin Regulates Gut Microbiota and Exerts Neuroprotective Effect on Mouse Model of Parkinson's Disease. Front Neurosci 2020; 14:549037. [PMID: 33381005 PMCID: PMC7768012 DOI: 10.3389/fnins.2020.549037] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 11/19/2020] [Indexed: 12/18/2022] Open
Abstract
Previous studies have reported the anti-oxidant, anti-inflammatory, and anti-cancer effects of fisetin. However, the therapeutic efficacy of fisetin in Parkinson’s disease (PD) is unclear. In this study, we demonstrated that fisetin could markedly alleviate 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced dopaminergic neurodegeneration in mice. To confirm the reported correlation between gut microbiota and PD, the bacterial DNA in the fresh feces of mice from each group was subjected to 16S rRNA (V3 and V4 regions) sequencing. The results revealed that fisetin changed the number, diversity, and distribution of gut microbiota in MPTP-induced mice model of PD. The alpha and beta diversity analyses showed that the fisetin intervented MPTP group gut microbiota exhibited a significantly higher abundance of Lachnospiraceae and a significantly lower abundance of uncultured_bacterium_g_Escherichia-Shigella and uncultured_bacterium_g_Bacillus than the MPTP group gut microbiota. These findings indicated that fisetin exerts a neuroprotective effect on neurodegeneration by altering the composition and diversity of gut microbiota. Thus, fisetin could be a potential novel therapeutic for PD.
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Affiliation(s)
- Tian-Jiao Chen
- Department of Neurology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ya Feng
- Department of Neurology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Te Liu
- Shanghai Geriatric Institute of Chinese Medicine, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Ting-Ting Wu
- Department of Neurology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ya-Jing Chen
- Department of Neurology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xuan Li
- Department of Neurology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qing Li
- The State Key Laboratory of Medical Neurobiology, The Institutes of Brain Science and the Collaborative Innovation Center for Brain Science, Shanghai Medical College, Fudan University, Shanghai, China
| | - Yun-Cheng Wu
- Department of Neurology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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19
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Fluoxetine rescues rotarod motor deficits in Mecp2 heterozygous mouse model of Rett syndrome via brain serotonin. Neuropharmacology 2020; 176:108221. [PMID: 32652084 DOI: 10.1016/j.neuropharm.2020.108221] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Revised: 05/24/2020] [Accepted: 06/20/2020] [Indexed: 01/28/2023]
Abstract
Motor skill is a specific area of disability of Rett syndrome (RTT), a rare disorder occurring almost exclusively in girls, caused by loss-of-function mutations of the X-linked methyl-CpG-binding protein2 (MECP2) gene, encoding the MECP2 protein, a member of the methyl-CpG-binding domain nuclear proteins family. Brain 5-HT, which is defective in RTT patients and Mecp2 mutant mice, regulates motor circuits and SSRIs enhance motor skill learning and plasticity. In the present study, we used heterozygous (Het) Mecp2 female and Mecp2-null male mice to investigate whether fluoxetine, a SSRI with pleiotropic effects on neuronal circuits, rescues motor coordination deficits. Repeated administration of 10 mg/kg fluoxetine fully rescued rotarod deficit in Mecp2 Het mice regardless of age, route of administration or pre-training to rotarod. The motor improvement was confirmed in the beam walking test while no effect was observed in the hanging-wire test, suggesting a preferential action of fluoxetine on motor coordination. Citalopram mimicked the effects of fluoxetine, while the inhibition of 5-HT synthesis abolished the fluoxetine-induced improvement of motor coordination. Mecp2 null mice, which responded poorly to fluoxetine in the rotarod, showed reduced 5-HT synthesis in the prefrontal cortex, hippocampus and striatum, and reduced efficacy of fluoxetine in raising extracellular 5-HT as compared to female mutants. No sex differences were observed in the ability of fluoxetine to desensitize 5-HT1A autoreceptors upon repeated administration. These findings indicate that fluoxetine rescues motor coordination in Mecp2 Het mice through its ability to enhance brain 5-HT and suggest that drugs enhancing 5-HT neurotransmission may have beneficial effects on motor symptoms of RTT.
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20
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Horie M, Yoshioka N, Kusumi S, Sano H, Kurose M, Watanabe‐Iida I, Hossain I, Chiken S, Abe M, Yamamura K, Sakimura K, Nambu A, Shibata M, Takebayashi H. Disruption of
dystonin
in Schwann cells results in late‐onset neuropathy and sensory ataxia. Glia 2020; 68:2330-2344. [DOI: 10.1002/glia.23843] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 04/26/2020] [Accepted: 04/28/2020] [Indexed: 01/26/2023]
Affiliation(s)
- Masao Horie
- Division of Neurobiology and AnatomyGraduate School of Medical and Dental Sciences, Niigata University Niigata Japan
- Department of Morphological SciencesKagoshima University Kagoshima Japan
- Department of NursingNiigata College of Nursing Niigata Japan
| | - Nozomu Yoshioka
- Division of Neurobiology and AnatomyGraduate School of Medical and Dental Sciences, Niigata University Niigata Japan
| | - Satoshi Kusumi
- Department of Morphological SciencesKagoshima University Kagoshima Japan
| | - Hiromi Sano
- Division of System NeurophysiologyNational Institute for Physiological Sciences Okazaki Japan
- Department of Physiological SciencesSOKENDAI Okazaki Japan
| | - Masayuki Kurose
- Division of Oral PhysiologyGraduate School of Medical and Dental Sciences, Niigata University Niigata Japan
- Department of Physiology, School of Dentistry, Iwate Medical University Morioka Japan
| | - Izumi Watanabe‐Iida
- Department of Cellular NeurobiologyBrain Research Institute, Niigata University Niigata Japan
- Division of Oral Biochemistry, Graduate School of Medical and Dental Sciences, Niigata University Niigata Japan
| | - Ibrahim Hossain
- Division of Neurobiology and AnatomyGraduate School of Medical and Dental Sciences, Niigata University Niigata Japan
- Department of Biochemistry and Molecular BiologyJahangirnagar University Savar Dhaka Bangladesh
| | - Satomi Chiken
- Division of System NeurophysiologyNational Institute for Physiological Sciences Okazaki Japan
- Department of Physiological SciencesSOKENDAI Okazaki Japan
| | - Manabu Abe
- Department of Cellular NeurobiologyBrain Research Institute, Niigata University Niigata Japan
- Department of Animal Model DevelopmentBrain Research Institute, Niigata University Niigata Japan
| | - Kensuke Yamamura
- Division of Oral PhysiologyGraduate School of Medical and Dental Sciences, Niigata University Niigata Japan
| | - Kenji Sakimura
- Department of Cellular NeurobiologyBrain Research Institute, Niigata University Niigata Japan
- Department of Animal Model DevelopmentBrain Research Institute, Niigata University Niigata Japan
| | - Atsushi Nambu
- Division of System NeurophysiologyNational Institute for Physiological Sciences Okazaki Japan
- Department of Physiological SciencesSOKENDAI Okazaki Japan
| | - Masahiro Shibata
- Department of Morphological SciencesKagoshima University Kagoshima Japan
| | - Hirohide Takebayashi
- Division of Neurobiology and AnatomyGraduate School of Medical and Dental Sciences, Niigata University Niigata Japan
- Center for Coordination of Research FacilitiesNiigata University Niigata Japan
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21
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Zhou H, Yuan D, Gao W, Tian J, Sun H, Yu S, Wang J, Sun L. Loss of high-temperature requirement protein A2 protease activity induces mitonuclear imbalance via differential regulation of mitochondrial biogenesis in sarcopenia. IUBMB Life 2020; 72:1659-1679. [PMID: 32353215 DOI: 10.1002/iub.2289] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 03/06/2020] [Accepted: 03/29/2020] [Indexed: 12/15/2022]
Abstract
Cellular homeostasis requires tight coordination between nucleus and mitochondria, organelles that each possesses their own genomes. Disrupted mitonuclear communication has been found to be implicated in many aging processes. However, little is known about mitonuclear signaling regulator in sarcopenia which is a major contributor to the risk of poor health-related quality of life, disability, and premature death in older people. High-temperature requirement protein A2 (HtrA2/Omi) is a mitochondrial protease and plays an important role in mitochondrial proteostasis. HtrA2mnd2(-/-) mice harboring protease-deficient HtrA2/Omi Ser276Cys missense mutants exhibit premature aging phenotype. Additionally, HtrA2/Omi has been established as a signaling regulator in nervous system and tumors. We therefore asked whether HtrA2/Omi participates in mitonuclear signaling regulation in muscle degeneration. Using motor functional, histological, and molecular biological methods, we characterized the phenotype of HtrA2mnd2(-/-) muscle. Furthermore, we isolated the gastrocnemius muscle of HtrA2mnd2(-/-) mice and determined expression of genes in mitochondrial unfolded protein response (UPRmt ), mitohormesis, electron transport chain (ETC), and mitochondrial biogenesis. Here, we showed that HtrA2/Omi protease deficiency induced denervation-independent skeletal muscle degeneration with sarcopenia phenotypes. Despite mitochondrial hypofunction, upregulation of UPRmt and mitohormesis-related genes and elevated total reactive oxygen species (ROS) production were not observed in HtrA2mnd2(-/-) mice, contrary to previous assumptions that loss of protease activity of HtrA2/Omi would lead to mitochondrial dysfunction as a result of proteostasis disturbance and ROS burst. Instead, we showed that HtrA2/Omi protease deficiency results in different changes between the expression of nuclear DNA- and mitochondrial DNA-encoded ETC subunits, which is in consistent with their transcription factors, nuclear respiratory factors 1 and 2, and coactivator peroxisome proliferator-activated receptor γ coactivator 1α. These results reveal that loss of HtrA2/Omi protease activity induces mitonuclear imbalance via differential regulation of mitochondrial biogenesis in sarcopenia. The novel mechanistic insights may be of importance in developing new therapeutic strategies for sarcopenia.
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Affiliation(s)
- Haohan Zhou
- Key Laboratory of Pathobiology, Ministry of Education, Department of Pathophysiology, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Danni Yuan
- Key Laboratory of Pathobiology, Ministry of Education, Department of Pathophysiology, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Weinan Gao
- Department of Orthopedics, Second Hospital, Jilin University, Changchun, China
| | - Jiayi Tian
- Department of Reproductive Medicine and Center for Prenatal Diagnosis, First Hospital, Jilin University, Changchun, China
| | - Hongyu Sun
- Key Laboratory of Pathobiology, Ministry of Education, Department of Pathophysiology, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Shuang Yu
- Department of Reproductive Medicine, Second Hospital, Jilin University, Changchun, China
| | - Jincheng Wang
- Department of Orthopedics, Second Hospital, Jilin University, Changchun, China
| | - Liankun Sun
- Key Laboratory of Pathobiology, Ministry of Education, Department of Pathophysiology, College of Basic Medical Sciences, Jilin University, Changchun, China
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22
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Bellantuono I, de Cabo R, Ehninger D, Di Germanio C, Lawrie A, Miller J, Mitchell SJ, Navas-Enamorado I, Potter PK, Tchkonia T, Trejo JL, Lamming DW. A toolbox for the longitudinal assessment of healthspan in aging mice. Nat Protoc 2020; 15:540-574. [PMID: 31915391 PMCID: PMC7002283 DOI: 10.1038/s41596-019-0256-1] [Citation(s) in RCA: 81] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 10/10/2019] [Indexed: 12/11/2022]
Abstract
The number of people aged over 65 is expected to double in the next 30 years. For many, living longer will mean spending more years with the burdens of chronic diseases such as Alzheimer's disease, cardiovascular disease, and diabetes. Although researchers have made rapid progress in developing geroprotective interventions that target mechanisms of aging and delay or prevent the onset of multiple concurrent age-related diseases, a lack of standardized techniques to assess healthspan in preclinical murine studies has resulted in reduced reproducibility and slow progress. To overcome this, major centers in Europe and the United States skilled in healthspan analysis came together to agree on a toolbox of techniques that can be used to consistently assess the healthspan of mice. Here, we describe the agreed toolbox, which contains protocols for echocardiography, novel object recognition, grip strength, rotarod, glucose tolerance test (GTT) and insulin tolerance test (ITT), body composition, and energy expenditure. The protocols can be performed longitudinally in the same mouse over a period of 4-6 weeks to test how candidate geroprotectors affect cardiac, cognitive, neuromuscular, and metabolic health.
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Affiliation(s)
- I Bellantuono
- Department of Oncology and Metabolism, Healthy Lifespan Institute and MRC-Arthritis Research UK Centre for Integrated research into Musculoskeletal Ageing, University of Sheffield, Sheffield, UK.
| | - R de Cabo
- Translational Gerontology Branch, National Institutes of Health, Baltimore, MD, USA
| | - D Ehninger
- German Center for Neurodegenerative Diseases (DZNE), Venusberg Campus 1, Bonn, Germany
| | - C Di Germanio
- Translational Gerontology Branch, National Institutes of Health, Baltimore, MD, USA
| | - A Lawrie
- Department of Infection, Immunity & Cardiovascular Disease, University of Sheffield, Sheffield, UK
| | - J Miller
- Robert and Arlene KogodCenter on Aging, Mayo Clinic, Rochester, MN, USA
| | - S J Mitchell
- Department of Molecular Medicine, Harvard T. H. Chan School of Public Health, Boston, MA, USA
| | - I Navas-Enamorado
- Translational Gerontology Branch, National Institutes of Health, Baltimore, MD, USA
| | - P K Potter
- Department of Biological and Life Sciences, Faculty of Health and Life Sciences, Oxford Brookes University, Oxfordshire, UK
| | - T Tchkonia
- Robert and Arlene KogodCenter on Aging, Mayo Clinic, Rochester, MN, USA
| | - J L Trejo
- Department of Translational Neuroscience, Cajal Institute (CSIC), Madrid, Spain
| | - D W Lamming
- William S. Middleton Memorial Veterans Hospital, Madison, WI, USA.
- Department of Medicine, University of Wisconsin-Madison, Madison, WI, USA.
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23
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Bieber M, Gronewold J, Scharf AC, Schuhmann MK, Langhauser F, Hopp S, Mencl S, Geuss E, Leinweber J, Guthmann J, Doeppner TR, Kleinschnitz C, Stoll G, Kraft P, Hermann DM. Validity and Reliability of Neurological Scores in Mice Exposed to Middle Cerebral Artery Occlusion. Stroke 2019; 50:2875-2882. [PMID: 31412755 DOI: 10.1161/strokeaha.119.026652] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Background and Purpose- The selection of appropriate neurological scores and tests is crucial for the evaluation of stroke consequences. The validity and reliability of neurological deficit scores and tests has repeatedly been questioned in ischemic stroke models in the past. Methods- In 198 male mice exposed to transient intraluminal middle cerebral artery occlusion, we examined the validity and reliability of 11 neurological scores (Bederson score 0-3, Bederson score 0-4, Bederson score 0-5, modified neurological severity [0-14], subjective overall impression [0-10], or simple neurological tests: grip test, latency to move body length test, pole test, wire hanging test, negative geotaxis test, and elevated body swing test) in the acute stroke phase, that is, after 24 hours. Combinations of neurological scores or tests for predicting infarct volume were statistically analyzed. Results- Infarct volume was left skewed (median [Q1-Q3], 78.4 [54.8-101.3] mm3). Among all tests, the Bederson (0-5; r=0.63, P<0.001), modified neurological severity (r=0.80, P<0.001), and subjective overall impression (r=-0.63, P<0.001) scores had the highest test validities, using infarct volume as external reference. Subjective overall impression had the best agreement between 5 raters (Kendall W=0.11, P<0.001). The Bederson (0-5) score discriminated infarct volume in mice with small (≤50 mm3; r=0.33, P=0.027) and large (>50 mm3; r=0.48, P<0.001) brain infarcts, all other tests only in mice with large infarcts. Combining subjective overall impression with Bederson (0-5) score explained 47.6% of the variance of infarct volume. Conclusions- Despite their simplicity, the Bederson (0-5) score, modified neurological severity score, and subjective overall impression have reasonable validity and reliability in the acute stroke phase. The Bederson (0-5) score equally distinguishes infarct volume in small and large infarcts. Visual Overview- An online visual overview is available for this article.
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Affiliation(s)
- Michael Bieber
- From the Departments of Neurology (M.B., M.K.S., F.L., S.M., E.G., J.L., J. Guthmann, C.K., G.S., P.K.), University Hospital Würzburg, Germany
| | - Janine Gronewold
- Department of Neurology, University Hospital Essen, University of Duisburg-Essen, Germany (J. Gronewold, A.-C.S., F.L., S.M., C.K., D.M.H.)
| | - Anne-Carina Scharf
- Department of Neurology, University Hospital Essen, University of Duisburg-Essen, Germany (J. Gronewold, A.-C.S., F.L., S.M., C.K., D.M.H.)
| | - Michael K Schuhmann
- From the Departments of Neurology (M.B., M.K.S., F.L., S.M., E.G., J.L., J. Guthmann, C.K., G.S., P.K.), University Hospital Würzburg, Germany
| | - Friederike Langhauser
- From the Departments of Neurology (M.B., M.K.S., F.L., S.M., E.G., J.L., J. Guthmann, C.K., G.S., P.K.), University Hospital Würzburg, Germany.,Department of Neurology, University Hospital Essen, University of Duisburg-Essen, Germany (J. Gronewold, A.-C.S., F.L., S.M., C.K., D.M.H.)
| | - Sarah Hopp
- From the Departments of Neurology (M.B., M.K.S., F.L., S.M., E.G., J.L., J. Guthmann, C.K., G.S., P.K.), University Hospital Würzburg, Germany.,Neurosurgery (S.H.), University Hospital Würzburg, Germany
| | - Stine Mencl
- From the Departments of Neurology (M.B., M.K.S., F.L., S.M., E.G., J.L., J. Guthmann, C.K., G.S., P.K.), University Hospital Würzburg, Germany.,Department of Neurology, University Hospital Essen, University of Duisburg-Essen, Germany (J. Gronewold, A.-C.S., F.L., S.M., C.K., D.M.H.)
| | - Eva Geuss
- From the Departments of Neurology (M.B., M.K.S., F.L., S.M., E.G., J.L., J. Guthmann, C.K., G.S., P.K.), University Hospital Würzburg, Germany
| | - Jonas Leinweber
- From the Departments of Neurology (M.B., M.K.S., F.L., S.M., E.G., J.L., J. Guthmann, C.K., G.S., P.K.), University Hospital Würzburg, Germany
| | - Josua Guthmann
- From the Departments of Neurology (M.B., M.K.S., F.L., S.M., E.G., J.L., J. Guthmann, C.K., G.S., P.K.), University Hospital Würzburg, Germany
| | - Thorsten R Doeppner
- Department of Neurology, University of Göttingen Medical School, Germany (T.R.D.)
| | - Christoph Kleinschnitz
- From the Departments of Neurology (M.B., M.K.S., F.L., S.M., E.G., J.L., J. Guthmann, C.K., G.S., P.K.), University Hospital Würzburg, Germany.,Department of Neurology, University Hospital Essen, University of Duisburg-Essen, Germany (J. Gronewold, A.-C.S., F.L., S.M., C.K., D.M.H.)
| | - Guido Stoll
- From the Departments of Neurology (M.B., M.K.S., F.L., S.M., E.G., J.L., J. Guthmann, C.K., G.S., P.K.), University Hospital Würzburg, Germany
| | - Peter Kraft
- From the Departments of Neurology (M.B., M.K.S., F.L., S.M., E.G., J.L., J. Guthmann, C.K., G.S., P.K.), University Hospital Würzburg, Germany.,Department of Neurology, Klinikum Main-Spessart, Lohr, Germany (P.K.)
| | - Dirk M Hermann
- Department of Neurology, University Hospital Essen, University of Duisburg-Essen, Germany (J. Gronewold, A.-C.S., F.L., S.M., C.K., D.M.H.)
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24
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Hutton CP, Lemon JA, Sakic B, Rollo CD, Boreham DR, Fahnestock M, Wojtowicz JM, Becker S. Early Intervention with a Multi-Ingredient Dietary Supplement Improves Mood and Spatial Memory in a Triple Transgenic Mouse Model of Alzheimer's Disease. J Alzheimers Dis 2019; 64:835-857. [PMID: 29914019 DOI: 10.3233/jad-170921] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The increasing global burden of Alzheimer's disease (AD) and failure of conventional treatments to stop neurodegeneration necessitates an alternative approach. Evidence of inflammation, mitochondrial dysfunction, and oxidative stress prior to the accumulation of amyloid-β in the prodromal stage of AD (mild cognitive impairment; MCI) suggests that early interventions which counteract these features, such as dietary supplements, may ameliorate the onset of MCI-like behavioral symptoms. We administered a polyphenol-containing multiple ingredient dietary supplement (MDS), or vehicle, to both sexes of triple transgenic (3xTg-AD) mice and wildtype mice for 2 months from 2-4 months of age. We hypothesized that the MDS would preserve spatial learning, which is known to be impaired in untreated 3xTg-AD mice by 4 months of age. Behavioral phenotyping of animals was done at 1-2 and 3-4 months of age using a comprehensive battery of tests. As previously reported in males, both sexes of 3xTg-AD mice exhibited increased anxiety-like behavior at 1-2 months of age, prior to deficits in learning and memory, which did not appear until 3-4 months of age. The MDS did not reduce this anxiety or prevent impairments in novel object recognition (both sexes) or on the water maze probe trial (females only). Strikingly, the MDS specifically prevented 3xTg-AD mice (both sexes) from developing impairments (exhibited by untreated 3xTg-AD controls) in working memory and spatial learning. The MDS also increased sucrose preference, an indicator of hedonic tone. These data show that the MDS can prevent some, but not all, psychopathology in an AD model.
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Affiliation(s)
- Craig P Hutton
- Department of Psychology, Neuroscience & Behavior, McMaster University, Hamilton, ON, Canada
| | - Jennifer A Lemon
- Department of Biology, McMaster University, Hamilton, ON, Canada
| | - Boris Sakic
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, ON, Canada
| | - C David Rollo
- Department of Biology, McMaster University, Hamilton, ON, Canada
| | | | - Margaret Fahnestock
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, ON, Canada
| | | | - Suzanna Becker
- Department of Psychology, Neuroscience & Behavior, McMaster University, Hamilton, ON, Canada
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25
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Soria B, Martin-Montalvo A, Aguilera Y, Mellado-Damas N, López-Beas J, Herrera-Herrera I, López E, Barcia JA, Alvarez-Dolado M, Hmadcha A, Capilla-González V. Human Mesenchymal Stem Cells Prevent Neurological Complications of Radiotherapy. Front Cell Neurosci 2019; 13:204. [PMID: 31156392 PMCID: PMC6532528 DOI: 10.3389/fncel.2019.00204] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 04/24/2019] [Indexed: 12/27/2022] Open
Abstract
Radiotherapy is a highly effective tool for the treatment of brain cancer. However, radiation also causes detrimental effects in the healthy tissue, leading to neurocognitive sequelae that compromise the quality of life of brain cancer patients. Despite the recognition of this serious complication, no satisfactory solutions exist at present. Here we investigated the effects of intranasal administration of human mesenchymal stem cells (hMSCs) as a neuroprotective strategy for cranial radiation in mice. Our results demonstrated that intranasally delivered hMSCs promote radiation-induced brain injury repair, improving neurological function. This intervention confers protection against inflammation, oxidative stress, and neuronal loss. hMSC administration reduces persistent activation of damage-induced c-AMP response element-binding signaling in irradiated brains. Furthermore, hMSC treatment did not compromise the survival of glioma-bearing mice. Our findings encourage the therapeutic use of hMSCs as a non-invasive approach to prevent neurological complications of radiotherapy, improving the quality of life of brain tumor patients.
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Affiliation(s)
- Bernat Soria
- Department of Regeneration and Cell Therapy, Andalusian Center for Molecular Biology and Regenerative Medicine (CABIMER), University of Pablo de Olavide - University of Seville, CSIC, Seville, Spain.,Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Madrid, Spain
| | - Alejandro Martin-Montalvo
- Department of Regeneration and Cell Therapy, Andalusian Center for Molecular Biology and Regenerative Medicine (CABIMER), University of Pablo de Olavide - University of Seville, CSIC, Seville, Spain
| | - Yolanda Aguilera
- Department of Regeneration and Cell Therapy, Andalusian Center for Molecular Biology and Regenerative Medicine (CABIMER), University of Pablo de Olavide - University of Seville, CSIC, Seville, Spain
| | - Nuria Mellado-Damas
- Department of Regeneration and Cell Therapy, Andalusian Center for Molecular Biology and Regenerative Medicine (CABIMER), University of Pablo de Olavide - University of Seville, CSIC, Seville, Spain
| | - Javier López-Beas
- Department of Regeneration and Cell Therapy, Andalusian Center for Molecular Biology and Regenerative Medicine (CABIMER), University of Pablo de Olavide - University of Seville, CSIC, Seville, Spain
| | - Isabel Herrera-Herrera
- Department of Neuroradiology, Hospital Universitario Fundación Jiménez Díaz, Madrid, Spain
| | - Escarlata López
- Department of Radiation Oncology, Hospital Universitario Fundación Jiménez Díaz, Madrid, Spain
| | - Juan A Barcia
- Service of Neurosurgery, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria San Carlos (IdISSC), Department of Surgery, Universidad Complutense de Madrid, Madrid, Spain
| | - Manuel Alvarez-Dolado
- Department of Regeneration and Cell Therapy, Andalusian Center for Molecular Biology and Regenerative Medicine (CABIMER), University of Pablo de Olavide - University of Seville, CSIC, Seville, Spain
| | - Abdelkrim Hmadcha
- Department of Regeneration and Cell Therapy, Andalusian Center for Molecular Biology and Regenerative Medicine (CABIMER), University of Pablo de Olavide - University of Seville, CSIC, Seville, Spain.,Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Madrid, Spain
| | - Vivian Capilla-González
- Department of Regeneration and Cell Therapy, Andalusian Center for Molecular Biology and Regenerative Medicine (CABIMER), University of Pablo de Olavide - University of Seville, CSIC, Seville, Spain
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26
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Motor deficits in 16-month-old male and female 3xTg-AD mice. Behav Brain Res 2019; 356:305-313. [DOI: 10.1016/j.bbr.2018.09.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 09/07/2018] [Accepted: 09/08/2018] [Indexed: 11/22/2022]
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27
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Liu H, Jiang W, Chen X, Chang G, Zhao L, Li X, Zhang H. Skeletal muscle-specific Sidt2 knockout in mice induced muscular dystrophy-like phenotype. Metabolism 2018; 85:259-270. [PMID: 29752955 DOI: 10.1016/j.metabol.2018.05.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2018] [Revised: 04/21/2018] [Accepted: 05/07/2018] [Indexed: 02/06/2023]
Abstract
BACKGROUND Sidt2 is an integral lysosomal membrane protein. Previously, we generated a Sidt2 global knockout mouse and found impaired insulin secretion, along with skeletal muscle pathology. METHODS A mouse model with a muscle-specific knockout of the Sidt2 gene (Sidt2f/fCre) had been generated, to which extensive morphologic study as well as functional study was applied to investigate the direct role of Sidt2 on skeletal muscle tissue in vivo. Secondly, the autophagy-lysosomal pathway was examined by Western blot and immunostaining. Additionally, RNA expression changes in Sidt2f/fCre mice were analyzed by genechip. RESULTS Sidt2 deficiency in skeletal muscle results in pathognomonic hallmarks of muscular dystrophy, including muscle mass decrease, muscle weakness, fibrosis, central nucleation, fiber regeneration, mildly elevated serum creatine kinase, and dramatically elevated sarcolipin mRNA. Along with accumulation of autophagolysomes, LC3-II, adaptor protein p62, ubiquitinated aggregates, and Lamp2-positive vacuoles were increased significantly in Sidt2f/fCre skeletal muscle fibers. However, only lysosomal-related genes were upregulated, while the genes upstream of the autophagy pathway were unchanged. Simultaneously, the proteasome chymotryptic activity and the lysosomal soluble enzyme activity were unimpaired, which largely excluded the possibility of proteasome chymotryptic activity defect and the lysosomal soluble enzyme defect leading to ubiquitinated aggregates accumulation. CONCLUSION We concluded that Sidt2 deficiency leads to muscular dystrophy-like phenotype in mice and Sidt2 plays a critical role in the late stage of autophagy.
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Affiliation(s)
- Huan Liu
- Pediatric Endocrinology and Genetic Metabolism, Xinhua Hospital, Shanghai Institute for Pediatric Research, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wenjun Jiang
- Pediatric Endocrinology and Genetic Metabolism, Xinhua Hospital, Shanghai Institute for Pediatric Research, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xueru Chen
- Pediatric Endocrinology and Genetic Metabolism, Xinhua Hospital, Shanghai Institute for Pediatric Research, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Guoying Chang
- Pediatric Endocrinology and Genetic Metabolism, Xinhua Hospital, Shanghai Institute for Pediatric Research, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Lei Zhao
- Department of Neurology, Children's Hospital of Fudan University, Shanghai, China
| | - Xihua Li
- Department of Neurology, Children's Hospital of Fudan University, Shanghai, China.
| | - Huiwen Zhang
- Pediatric Endocrinology and Genetic Metabolism, Xinhua Hospital, Shanghai Institute for Pediatric Research, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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Klein SM, Prantl L, Geis S, Felthaus O, Dolderer J, Anker AM, Zeitler K, Alt E, Vykoukal J. Circulating serum CK level vs. muscle impairment for in situ monitoring burden of disease in Mdx-mice. Clin Hemorheol Microcirc 2017; 65:327-334. [PMID: 27716655 DOI: 10.3233/ch-16195] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
BACKGROUND Duchenne muscular dystrophy (DMD) consists of a lack in the expression of the subsarcolemmal protein dystrophin causing progressive muscle dysfunction. Among the widely applied animal models in DMD research is the C57BL/1010ScSn-Dmdmdx mouse, commonly referred to as the "mdx mouse". The potential benefit of novel interventions in this model is often assessed by variables such as functional improvement, histological changes, and creatine kinase (CK) serum levels as an indicator for the extent of in situ muscle damage. OBJECTIVE Our objective was to determine to what extent the serum CK-level serves a surrogate for muscle dysfunction. METHODS In this trial mdx mice were subjected to a four-limb wire-hanging test (WHT) to assess the physical performance as a reference for muscle function. As CK is a component of the muscle fiber cytosol, its serum activity is supposed to positively correlate with progressing muscle damage. Hence serum CK levels were measured to detect the degree of muscle impairment. The functional tests and the serum CK levels were analyzed for their specific correlation. RESULTS Although physical performance decreased during the course of the experiment, latency to fall times in the WHT did not correlate with the CK level in mdx mice. CONCLUSION Our data suggests that the serum CK activity might be a critical parameter to monitor the progression of muscle impairment in mdx mice. Further this study emphasizes the complexity of the DMD phenotype in the mdx mouse, and the care with which isolated parameters in this model should be interpreted.
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Affiliation(s)
- S M Klein
- Center for Plastic-, Hand- and Reconstructive Surgery, University Hospital Regensburg, Germany
| | - L Prantl
- Center for Plastic-, Hand- and Reconstructive Surgery, University Hospital Regensburg, Germany
| | - S Geis
- Center for Plastic-, Hand- and Reconstructive Surgery, University Hospital Regensburg, Germany
| | - O Felthaus
- Center for Plastic-, Hand- and Reconstructive Surgery, University Hospital Regensburg, Germany
| | - J Dolderer
- Center for Plastic-, Hand- and Reconstructive Surgery, University Hospital Regensburg, Germany
| | - A M Anker
- Center for Plastic-, Hand- and Reconstructive Surgery, University Hospital Regensburg, Germany
| | - K Zeitler
- Institute of Pathology, University of Regensburg, Regensburg, Germany
| | - E Alt
- Translational Molecular Pathology, University of Texas MD, Houston, TX, USA
| | - J Vykoukal
- Translational Molecular Pathology, University of Texas MD, Houston, TX, USA
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Watanabe-Matsumoto S, Moriwaki Y, Okuda T, Ohara S, Yamanaka K, Abe Y, Yasui M, Misawa H. Dissociation of blood-brain barrier disruption and disease manifestation in an aquaporin-4-deficient mouse model of amyotrophic lateral sclerosis. Neurosci Res 2017; 133:48-57. [PMID: 29154923 DOI: 10.1016/j.neures.2017.11.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Revised: 11/06/2017] [Accepted: 11/09/2017] [Indexed: 11/26/2022]
Abstract
Aquaporin-4 (AQP4) is abundantly expressed in the central nervous system and is involved in the water balance in the cellular environment. Previous studies have reported that AQP4 expression is upregulated in rat models of amyotrophic lateral sclerosis (ALS), a fatal disease that affects motor neurons in the brain and spinal cord. In this study, we report that astrocytic AQP4 overexpression is evident during the course of disease in the spinal cord of an ALS mouse model, as well as in tissue from patients with ALS. AQP4 overexpression appears to be specifically associated with ALS because it was not induced by other experimental manipulations that produced acute or chronic gliosis. In order to examine the contribution of AQP4 to ALS disease development, we crossed AQP4 knockout mice with a mouse model of ALS. Significant improvement in blood-brain barrier (BBB) permeability was observed in the AQP4-deficient ALS mouse model. However, the time to disease onset and total lifespan were reduced in the AQP4-deficient ALS mouse model. The contradictory results suggest that changes in AQP4 may be context-dependent and further studies are required to understand the precise contribution of brain water balance in ALS.
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Affiliation(s)
| | - Yasuhiro Moriwaki
- Division of Pharmacology, Faculty of Pharmacy, Keio University, Tokyo, 105-8512, Japan
| | - Takashi Okuda
- Division of Pharmacology, Faculty of Pharmacy, Keio University, Tokyo, 105-8512, Japan
| | - Shinji Ohara
- Department of Neurology, Matsumoto Medical Center, Chushin-Matsumoto Hospital, Matsumoto, 399-0021, Japan
| | - Koji Yamanaka
- Department of Neuroscience and Pathobiology, Research Institute of Environmental Medicine, Nagoya University, Nagoya, 464-8601, Japan
| | - Yoichiro Abe
- Department of Pharmacology, School of Medicine, Keio University, Tokyo, 160-8582, Japan
| | - Masato Yasui
- Department of Pharmacology, School of Medicine, Keio University, Tokyo, 160-8582, Japan
| | - Hidemi Misawa
- Division of Pharmacology, Faculty of Pharmacy, Keio University, Tokyo, 105-8512, Japan.
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Khan MB, Hafez S, Hoda MN, Baban B, Wagner J, Awad ME, Sangabathula H, Haigh S, Elsalanty M, Waller JL, Hess DC. Chronic Remote Ischemic Conditioning Is Cerebroprotective and Induces Vascular Remodeling in a VCID Model. Transl Stroke Res 2017; 9:51-63. [PMID: 28755277 PMCID: PMC5750336 DOI: 10.1007/s12975-017-0555-1] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 06/21/2017] [Accepted: 07/18/2017] [Indexed: 01/23/2023]
Abstract
Vascular contributions to cognitive impairment and dementia (VCID) make up 50% of the cases of dementia. The purpose of this study was to determine the effect of chronic remote ischemic conditioning (C-RIC) on improving long-term (6 months) outcomes and cerebral blood flow (CBF) and collateral formation in a mouse model of VCID. Adult C57BL/6J male mice (10 weeks) were randomly assigned to four different groups: (1) sham-bilateral carotid artery stenosis (BCAS), (2) BCAS + sham RIC, (3) BCAS+C-RIC for 1 month (1MO), and (4) BCAS+C-RIC-4 months (4MO). CBF, cognitive impairment, and functional outcomes were performed up for 6 months after BCAS surgery. The expression of CD31, α-SMA, and myelin basic protein (MBP) was assessed by immunohistochemistry (IHC). Additional set of mice were randomized to sham, BCAS, and BCAS+C-RIC. The cerebrovascular angioarchitecture was studied with micro-CT. RIC therapy for either 1 or 4 months significantly improved CBF, new collateral formation, functional and cognitive outcomes, and prevented white matter damage. There was no difference between C-RIC for 1 or 4 months; IHC studies at 6 months showed an increase in brain CD31 and α-SMA expression indicating increased angiogenesis and MBP indicating preservation of white matter in animals receiving RIC. One month of daily RIC is as effective as 4 months of daily RIC in improving CBF, angiogenesis, and long-term functional outcomes (6 months) in a VCID model. This suggests that 1 month of RIC is sufficient to reduce cognitive impairment and induce beneficial cerebrovascular remodeling.
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Affiliation(s)
- Mohammad Badruzzaman Khan
- Departments of Neurology, Medical College of Georgia, Augusta University, 1120 15th Street, CA1053, Augusta, GA, 30912, USA.
| | - Sherif Hafez
- Departments of Neurology, Medical College of Georgia, Augusta University, 1120 15th Street, CA1053, Augusta, GA, 30912, USA
| | - Md Nasrul Hoda
- Department of Medical Laboratory, Imagine and Radiologic Sciences, Augusta University, Augusta, GA, 30912, USA
| | - Babak Baban
- Department of Oral Biology, Augusta University, Augusta, GA, 30912, USA
| | - Jesse Wagner
- Departments of Neurology, Medical College of Georgia, Augusta University, 1120 15th Street, CA1053, Augusta, GA, 30912, USA
| | - Mohamed E Awad
- Department of Oral Biology, Augusta University, Augusta, GA, 30912, USA
| | - Hasith Sangabathula
- Departments of Neurology, Medical College of Georgia, Augusta University, 1120 15th Street, CA1053, Augusta, GA, 30912, USA
| | - Stephen Haigh
- Vascular Biology Center, Augusta University, Augusta, GA, 30912, USA
| | | | - Jennifer L Waller
- Departments of Biostatistics, Augusta University, Augusta, GA, 30912, USA
| | - David C Hess
- Departments of Neurology, Medical College of Georgia, Augusta University, 1120 15th Street, CA1053, Augusta, GA, 30912, USA.
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Martinez-Huenchullan SF, McLennan SV, Ban LA, Morsch M, Twigg SM, Tam CS. Utility and reliability of non-invasive muscle function tests in high-fat-fed mice. Exp Physiol 2017; 102:773-778. [PMID: 28497900 DOI: 10.1113/ep086328] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Accepted: 05/09/2017] [Indexed: 01/13/2023]
Abstract
NEW FINDINGS What is the central question of this study? Non-invasive muscle function tests have not been validated for use in the study of muscle performance in high-fat-fed mice. What is the main finding and its importance? This study shows that grip strength, hang wire and four-limb hanging tests are able to discriminate the muscle performance between chow-fed and high-fat-fed mice at different time points, with grip strength being reliable after 5, 10 and 20 weeks of dietary intervention. Non-invasive tests are commonly used for assessing muscle function in animal models. The value of these tests in obesity, a condition where muscle strength is reduced, is unclear. We investigated the utility of three non-invasive muscle function tests, namely grip strength (GS), hang wire (HW) and four-limb hanging (FLH), in C57BL/6 mice fed chow (chow group, n = 48) or a high-fat diet (HFD group, n = 48) for 20 weeks. Muscle function tests were performed at 5, 10 and 20 weeks. After 10 and 20 weeks, HFD mice had significantly reduced GS (in newtons; mean ± SD: 10 weeks chow, 1.89 ± 0.1 and HFD, 1.79 ± 0.1; 20 weeks chow, 1.99 ± 0.1 and HFD, 1.75 ± 0.1), FLH [in seconds per gram body weight; median (interquartile range): 10 weeks chow, 2552 (1337-4964) and HFD, 1230 (749-1994); 20 weeks chow, 2048 (765-3864) and HFD, 1036 (717-1855)] and HW reaches [n; median (interquartile range): 10 weeks chow, 4 (2-5) and HFD, 2 (1-3); 20 weeks chow, 3 (1-5) and HFD, 1 (0-2)] and higher falls [n; median (interquartile range): 10 weeks chow, 0 (0-2) and HFD, 3 (1-7); 20 weeks chow, 1 (0-4) and HFD, 8 (5-10)]. Grip strength was reliable in both dietary groups [intraclass correlation coefficient (ICC) = 0.5-0.8; P < 0.05], whereas FLH showed good reliability in chow (ICC = 0.7; P < 0.05) but not in HFD mice after 10 weeks (ICC < 0.5). Our data demonstrate that non-invasive muscle function tests are valuable and reliable tools for assessment of muscle strength and function in high-fat-fed mice.
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Affiliation(s)
| | - Susan V McLennan
- Greg Brown Diabetes & Endocrinology Laboratory, Sydney Medical School, University of Sydney, Sydney, NSW, Australia.,Chemical Pathology, NSW Health Pathology Sydney, Royal Prince Alfred Hospital, Sydney, NSW, Australia
| | - Linda A Ban
- Greg Brown Diabetes & Endocrinology Laboratory, Sydney Medical School, University of Sydney, Sydney, NSW, Australia
| | - Marco Morsch
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Macquarie University, Sydney, NSW, Australia
| | - Stephen M Twigg
- Greg Brown Diabetes & Endocrinology Laboratory, Sydney Medical School, University of Sydney, Sydney, NSW, Australia.,Department of Endocrinology, Royal Prince Alfred Hospital, Sydney, NSW, Australia
| | - Charmaine S Tam
- Greg Brown Diabetes & Endocrinology Laboratory, Sydney Medical School, University of Sydney, Sydney, NSW, Australia.,Charles Perkins Centre and School of Life and Environmental Sciences, University of Sydney, Sydney, NSW, Australia
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Adebiyi OE, Olopade JO, Olayemi FO. Neuroprotective Effect of Grewia carpinifolia Extract against Vanadium Induced Behavioural Impairment. FOLIA VETERINARIA 2016. [DOI: 10.1515/fv-2016-0031] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Abstract
Vanadium (V), a heavy metal, has been reported to induce central nervous system toxicity leading to various behavioural impairments. It is characterized by the production of reactive oxygen. The present study was designed to test the possibility of Grewia carpinifolia ethanolic extract in preventing behavioural alterations following acute vanadium toxicity in mice. Twenty five Swiss albino mice (25—27 g) were completely randomized into 5 groups (A—E) of 5 animals each. Group A received distilled water and served as a control; group B, received vitamin E (500 mg.kg−1 b. w. every 72 hours), a known antioxidant orally, along with a daily dose of sodium metavanadate intraperitoneally (i. p.) for 7 days; group C and group D received Grewia carpinifolia leaf extract at 100 and 200 mg.kg−1 b.w orally respectively, along with the sodium metavanadate i. p. for 7 days; while group E received sodium metavanadate i. p. only for 7 days. The behavioural and motor functions were analysed by the open field, negative geotaxis, and hanging wire tests; the daily body and brain weights were recorded. Grewia carpinifolia ethanolic extracts significantly reduced the number of grooming, stretched attend posture, and freezing time that were significantly increased in the vanadium only group and also enhanced the vestibular functions. In addition, the latent time spent on the hanging wire in groups simultaneously administered with the extract and V compared favourably (P > 0.05) with the control groups but a decrease in latent time was observed in the V only group. The results suggest that acute V toxicity results in various behavioural deficits and support a possible role of Grewia carpinifolia as a protective agent against acute vanadium-toxicity with a better result at 200 mg.kg−1 b. w.
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Affiliation(s)
- O. E. Adebiyi
- Department of Veterinary Physiology, Biochemistry and Pharmacology, Nigeria
| | - J. O. Olopade
- Department of Veterinary Anatomy, University of Ibadan, Nigeria
| | - F. O. Olayemi
- Department of Veterinary Physiology, Biochemistry and Pharmacology, Nigeria
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A critical role for Piezo2 channels in the mechanotransduction of mouse proprioceptive neurons. Sci Rep 2016; 6:25923. [PMID: 27184818 PMCID: PMC4869095 DOI: 10.1038/srep25923] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Accepted: 04/25/2016] [Indexed: 01/30/2023] Open
Abstract
Proprioceptors are responsible for the conscious sensation of limb position and movement, muscle tension or force, and balance. Recent evidence suggests that Piezo2 is a low threshold mechanosensory receptor in the peripheral nervous system, acting as a transducer for touch sensation and proprioception. Thus, we characterized proprioceptive neurons in the mesencephalic trigeminal nucleus that are involved in processing proprioceptive information from the face and oral cavity. This is a specific population of neurons that produce rapidly adapting mechanically-activated currents that are fully dependent on Piezo2. As such, we analyzed the deficits in balance and coordination caused by the selective deletion of the channel in proprioceptors (conditional knockout). The data clearly shows that Piezo2 fulfills a critical role in a defined homogeneous population of proprioceptor neurons that innervate the head muscles, demonstrating that this ion channel is essential for mammalian proprioceptive mechanotransduction.
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Abstract
Wire hang tests are simple and cheap methods to assess muscle performance in small rodents, but do not always yield consistent results. We describe a simple wire hang apparatus that comprises a continuous rolling loop. Wire hang times measured using the rolling wire provide consistent and reliable data that more accurately reflect the output of a continuous physical effort. As such data obtained in mice using a rolling wire are more representative of the physical changes in the mouse muscle and less susceptible to individual mouse behaviour and differences in animal handling.
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Gazzerro E, Baldassari S, Assereto S, Fruscione F, Pistorio A, Panicucci C, Volpi S, Perruzza L, Fiorillo C, Minetti C, Traggiai E, Grassi F, Bruno C. Enhancement of Muscle T Regulatory Cells and Improvement of Muscular Dystrophic Process in mdx Mice by Blockade of Extracellular ATP/P2X Axis. THE AMERICAN JOURNAL OF PATHOLOGY 2015; 185:3349-60. [PMID: 26465071 DOI: 10.1016/j.ajpath.2015.08.010] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Revised: 08/23/2015] [Accepted: 08/31/2015] [Indexed: 12/19/2022]
Abstract
Infiltration of immune cells and chronic inflammation substantially affect skeletal and cardiac muscle degeneration in Duchenne muscular dystrophy. In the immune system, extracellular adenosine triphosphate (ATP) released by dying cells is sensed as a danger associated molecular pattern through P2 purinergic receptors. Specifically, the P2X7 subtype has a prominent role in regulating immune system physiology and contributes to inflammasome activation also in muscle cells. Here, we show that in vivo blockade of the extracellular ATP/P2X purinergic signaling pathway by periodate-oxidized ATP delayed the progression of the dystrophic phenotype and dampened the local inflammatory response in mdx mice, a spontaneous mouse model of dystrophin deficiency. Reduced infiltration of leukocytes and macrophages and decreased expression of IL-6 were revealed in the muscles of periodate-oxidized ATP-treated mdx mice. Concomitantly, an increase in Foxp3(+) immunosuppressive regulatory T cells was observed and correlated with enhanced myofiber regeneration. Moreover, we detected reduced concentrations of profibrotic cytokines, including transforming growth factor-β and connective tissue growth factor, in muscles of periodate-oxidized ATP-treated mdx mice. The improvement of inflammatory features was associated with increased strength and reduced necrosis, thus suggesting that pharmacologic purinergic antagonism altering the adaptive immune component in the muscle infiltrates might represent a promising therapeutic approach in Duchenne muscular dystrophy.
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Affiliation(s)
- Elisabetta Gazzerro
- Unit of Pediatric Neurology and Muscle Disease, Istituto Giannina Gaslini, Genova, Italy
| | - Simona Baldassari
- Unit of Pediatric Neurology and Muscle Disease, Istituto Giannina Gaslini, Genova, Italy
| | - Stefania Assereto
- Unit of Pediatric Neurology and Muscle Disease, Istituto Giannina Gaslini, Genova, Italy
| | - Floriana Fruscione
- Unit of Pediatric Neurology and Muscle Disease, Istituto Giannina Gaslini, Genova, Italy
| | - Angela Pistorio
- Unit of Epidemiology and Statistics, Istituto Giannina Gaslini, Genova, Italy
| | - Chiara Panicucci
- Unit of Pediatric Neurology and Muscle Disease, Istituto Giannina Gaslini, Genova, Italy
| | - Stefano Volpi
- Unit of Pediatrics II, Istituto Giannina Gaslini, Genova, Italy
| | - Lisa Perruzza
- Institute for Research in Biomedicine, Bellinzona, Switzerland; Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland
| | - Chiara Fiorillo
- Neuromuscular and Molecular Medicine Unit, Stella Maris Foundation, Pisa, Italy
| | - Carlo Minetti
- Unit of Pediatric Neurology and Muscle Disease, Istituto Giannina Gaslini, Genova, Italy
| | - Elisabetta Traggiai
- Novartis Biologics Center, Novartis Institute for Research in Biomedicine, Basel, Switzerland
| | - Fabio Grassi
- Institute for Research in Biomedicine, Bellinzona, Switzerland; Department of Medical Biotechnologies & Translational Medicine, University of Milan, Istituto Nazionale di Genetica Molecolare, Milan, Italy.
| | - Claudio Bruno
- Center of Myology and Neurodegenerative Disorders, Department of Neuroscience, Istituto Giannina Gaslini, Genova, Italy.
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Huizer-Pajkos A, Kane AE, Howlett SE, Mach J, Mitchell SJ, de Cabo R, Le Couteur DG, Hilmer SN. Adverse Geriatric Outcomes Secondary to Polypharmacy in a Mouse Model: The Influence of Aging. J Gerontol A Biol Sci Med Sci 2015; 71:571-7. [PMID: 25940962 DOI: 10.1093/gerona/glv046] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Accepted: 03/28/2015] [Indexed: 01/05/2023] Open
Abstract
We aimed to develop a mouse model of polypharmacy, primarily to establish whether short-term exposure to polypharmacy causes adverse geriatric outcomes. We also investigated whether old age increased susceptibility to any adverse geriatric outcomes of polypharmacy. Young (n= 10) and old (n= 21) male C57BL/6 mice were administered control diet or polypharmacy diet containing therapeutic doses of five commonly used medicines (simvastatin, metoprolol, omeprazole, acetaminophen, and citalopram). Mice were assessed before and after the 2- to 4-week intervention. Over the intervention period, we observed no mortality and no change in food intake, body weight, or serum biochemistry in any age or treatment group. In old mice, polypharmacy caused significant declines in locomotor activity (pre minus postintervention values in control 2 ± 13 counts, polypharmacy 32 ± 7 counts,p< .05) and front paw wire holding impulse (control -2.45 ± 1.02 N s, polypharmacy +1.99 ± 1.19 N s,p< .05), loss of improvement in rotarod latency (control -59 ± 11 s, polypharmacy -1.7 ± 17 s,p< .05), and lowered blood pressure (control -0.2 ± 3 mmHg, polypharmacy 11 ± 4 mmHg,p< .05). In young mice, changes in outcomes over the intervention period did not differ between control and polypharmacy groups. This novel model of polypharmacy is feasible. Even short-term polypharmacy impairs mobility, balance, and strength in old male mice.
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Affiliation(s)
- Aniko Huizer-Pajkos
- Departments of Clinical Pharmacology and Aged Care, Royal North Shore Hospital and Kolling Institute of Medical Research, St Leonards, NSW, Australia
| | - Alice E Kane
- Departments of Clinical Pharmacology and Aged Care, Royal North Shore Hospital and Kolling Institute of Medical Research, St Leonards, NSW, Australia. Sydney Medical School, University of Sydney, NSW, Australia
| | - Susan E Howlett
- Departments of Pharmacology and Medicine (Geriatric Medicine), Dalhousie University, Halifax, Nova Scotia, Canada
| | - John Mach
- Departments of Clinical Pharmacology and Aged Care, Royal North Shore Hospital and Kolling Institute of Medical Research, St Leonards, NSW, Australia. Sydney Medical School, University of Sydney, NSW, Australia
| | - Sarah J Mitchell
- Translational Gerontology Branch, National Institute on Aging, Baltimore, Maryland
| | - Rafael de Cabo
- Translational Gerontology Branch, National Institute on Aging, Baltimore, Maryland
| | - David G Le Couteur
- Sydney Medical School, University of Sydney, NSW, Australia. Ageing and Alzheimer's Institute, Concord Hospital, Concord, NSW, Australia
| | - Sarah N Hilmer
- Departments of Clinical Pharmacology and Aged Care, Royal North Shore Hospital and Kolling Institute of Medical Research, St Leonards, NSW, Australia. Sydney Medical School, University of Sydney, NSW, Australia.
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McDonald AA, Hebert SL, Kunz MD, Ralles SJ, McLoon LK. Disease course in mdx:utrophin+/- mice: comparison of three mouse models of Duchenne muscular dystrophy. Physiol Rep 2015; 3:3/4/e12391. [PMID: 25921779 PMCID: PMC4425985 DOI: 10.14814/phy2.12391] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
The mdx mouse model of Duchenne muscular dystrophy (DMD) is used to study disease mechanisms and potential treatments, but its pathology is less severe than DMD patients. Other mouse models were developed to more closely mimic the human disease based on knowledge that upregulation of utrophin has a protective effect in mdx muscle. An mdx:utrophin−/− (dko) mouse was created, which had a severe disease phenotype and a shortened life span. An mdx:utrophin+/− mouse was also created, which had an intermediate disease phenotype compared to the mdx and dko mice. To determine the usefulness of mdx:utrophin+/− mice for long-term DMD studies, limb muscle pathology and function were assessed across the life span of wild-type, mdx, mdx:utrophin+/−, and dko mice. Muscle function assessment, specifically grip duration and rotarod performance, demonstrated that mdx:utrophin+/− mice were weaker for a longer time than mdx mice. Mean myofiber area was smaller in mdx:utrophin+/− mice compared to mdx mice at 12 months. Mdx:utrophin+/− mice had a higher percentage of centrally nucleated myofibers compared to mdx mice at 6 and 12 months. Collagen I and IV density was significantly higher in mdx:utrophin+/− muscle compared to mdx at most ages examined. Generally, mdx:utrophin+/− mice showed an intermediate disease phenotype over a longer time course compared to the mdx and dko mice. While they do not genetically mirror human DMD, mdx:utrophin+/− mice may be a more useful animal model than mdx or dko mice for investigating long-term efficacy of potential treatments when fibrosis or muscle function is the focus.
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Affiliation(s)
- Abby A McDonald
- Department of Ophthalmology and Visual Neurosciences, University of Minnesota, Minneapolis, Minnesota Graduate Program in Molecular, Cellular, Developmental Biology and Genetics, University of Minnesota, Minneapolis Minnesota
| | - Sadie L Hebert
- Department of Ophthalmology and Visual Neurosciences, University of Minnesota, Minneapolis, Minnesota
| | - Matthew D Kunz
- Department of Ophthalmology and Visual Neurosciences, University of Minnesota, Minneapolis, Minnesota
| | - Steven J Ralles
- Department of Ophthalmology and Visual Neurosciences, University of Minnesota, Minneapolis, Minnesota
| | - Linda K McLoon
- Department of Ophthalmology and Visual Neurosciences, University of Minnesota, Minneapolis, Minnesota Graduate Program in Molecular, Cellular, Developmental Biology and Genetics, University of Minnesota, Minneapolis Minnesota Department of Neuroscience, University of Minnesota, Minneapolis, Minnesota
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38
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Ramirez-Sanchez I, De los Santos S, Gonzalez-Basurto S, Canto P, Mendoza-Lorenzo P, Palma-Flores C, Ceballos-Reyes G, Villarreal F, Zentella-Dehesa A, Coral-Vazquez R. (-)-Epicatechin improves mitochondrial-related protein levels and ameliorates oxidative stress in dystrophic δ-sarcoglycan null mouse striated muscle. FEBS J 2014; 281:5567-80. [PMID: 25284161 DOI: 10.1111/febs.13098] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2014] [Revised: 09/19/2014] [Accepted: 10/01/2014] [Indexed: 01/22/2023]
Abstract
Muscular dystrophies (MDs) are a group of heterogeneous genetic disorders characterized by progressive striated muscle wasting and degeneration. Although the genetic basis for many of these disorders has been identified, the exact mechanism of disease pathogenesis remains unclear. The presence of oxidative stress (OS) is known to contribute to the pathophysiology and severity of the MD. Mitochondrial dysfunction is observed in MD, and probably represents an important determinant of increased OS. Experimental antioxidant therapies have been implemented with the aim of protecting against disease progression, but results from clinical trials have been disappointing. In this study, we explored the capacity of the cacao flavonoid (-)-epicatechin (Epi) to mitigate OS by acting as a positive regulator of mitochondrial structure/function endpoints and redox balance control systems in skeletal and cardiac muscles of dystrophic, δ-sarcoglycan (δ-SG) null mice. Wild-type or δ-SG null 2.5-month-old male mice were treated via oral gavage with either water (controls) or Epi (1 mg·kg(-1) , twice daily) for 2 weeks. The results showed significant normalization of total protein carbonylation, recovery of the glutathione/oxidized glutathione ratio and enhanced superoxide dismutase 2, catalase and citrate synthase activities with Epi treatment. These effects were accompanied by increases in the protein levels of thioredoxin, glutathione peroxidase, superoxide dismutase 2, catalase, and mitochondrial endpoints. Furthermore, we found decreases in heart and skeletal muscle fibrosis, accompanied by an improvement in skeletal muscle function, with treatment. These results warrant further investigation of Epi as a potential therapeutic agent to mitigate MD-associated muscle degeneration.
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Affiliation(s)
- Israel Ramirez-Sanchez
- Sección de Estudios de Posgrado e Investigación, Escuela Superior de Medicina, Instituto Politécnico Nacional, México, D.F., México; School of Medicine, University of California, San Diego, La Jolla, CA, USA
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39
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De Filippis B, Nativio P, Fabbri A, Ricceri L, Adriani W, Lacivita E, Leopoldo M, Passarelli F, Fuso A, Laviola G. Pharmacological stimulation of the brain serotonin receptor 7 as a novel therapeutic approach for Rett syndrome. Neuropsychopharmacology 2014; 39:2506-18. [PMID: 24809912 PMCID: PMC4207333 DOI: 10.1038/npp.2014.105] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2013] [Revised: 04/29/2014] [Accepted: 04/30/2014] [Indexed: 01/01/2023]
Abstract
Rett syndrome (RTT) is a rare neurodevelopmental disorder, characterized by severe behavioral and physiological symptoms. Mutations in the methyl CpG-binding protein 2 gene (MECP2) cause >95% of classic cases, and currently there is no cure for this devastating disorder. The serotonin receptor 7 (5-HT7R) is linked to neuro-physiological regulation of circadian rhythm, mood, cognition, and synaptic plasticity. We presently report that 5-HT7R density is consistently reduced in cortical and hippocampal brain areas of symptomatic MeCP2-308 male mice, a RTT model. Systemic repeated treatment with LP-211 (0.25 mg/kg once/day for 7 days), a brain-penetrant selective 5-HT7R agonist, was able to rescue RTT-related defective performance: anxiety-related profiles in a Light/Dark test, motor abilities in a Dowel test, the exploratory behavior in the Marble Burying test, as well as memory in the Novelty Preference task. In the brain of RTT mice, LP-211 also reversed the abnormal activation of PAK and cofilin (key regulators of actin cytoskeleton dynamics) and of the ribosomal protein (rp) S6, whose reduced activation in MECP2 mutant neurons by mTOR is responsible for the altered protein translational control. Present findings indicate that pharmacological targeting of 5-HT7R improves specific behavioral and molecular manifestations of RTT, thus representing a first step toward the validation of an innovative systemic treatment. Beyond RTT, the latter might be extended to other disorders associated with intellectual disability.
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Affiliation(s)
- Bianca De Filippis
- Department of Cell Biology and Neuroscience, Istituto Superiore di Sanità, Rome, Italy
| | - Paola Nativio
- Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
| | - Alessia Fabbri
- Department of Therapeutic Research and Medicines Evaluation, Istituto Superiore di Sanità, Rome, Italy
| | - Laura Ricceri
- Department of Cell Biology and Neuroscience, Istituto Superiore di Sanità, Rome, Italy
| | - Walter Adriani
- Department of Cell Biology and Neuroscience, Istituto Superiore di Sanità, Rome, Italy
| | - Enza Lacivita
- Department of Pharmacy, University of Bari ‘A Moro', Bari, Italy
| | | | | | - Andrea Fuso
- Department of Psychology, Section of Neuroscience, Sapienza University of Rome, Rome, Italy
- European Center for Brain Research (CERC)/IRCCS Santa Lucia Foundation, Rome, Italy
| | - Giovanni Laviola
- Department of Cell Biology and Neuroscience, Istituto Superiore di Sanità, Rome, Italy
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40
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Sanchez-Roige S, Lalanza JF, Alvarez-López MJ, Cosín-Tomás M, Griñan-Ferré C, Pallàs M, Kaliman P, Escorihuela RM. Long-term wheel running changes on sensorimotor activity and skeletal muscle in male and female mice of accelerated senescence. AGE (DORDRECHT, NETHERLANDS) 2014; 36:9697. [PMID: 25129573 PMCID: PMC4159468 DOI: 10.1007/s11357-014-9697-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Accepted: 07/27/2014] [Indexed: 06/03/2023]
Abstract
The senescence-accelerated mouse prone 8 (SAMP8) is considered a useful non-transgenic model for studying aspects of aging. Using SAM resistant 1 (SAMR1) as controls, the long-term effects of wheel running on skeletal muscle adaptations and behavioral traits were evaluated in senescent (P8) and resistant (R1) male and female mice. Long-term wheel running (WR) led to increases in locomotor activity, benefits in sensorimotor function, and changes in body weight in a gender-dependent manner. WR increased body weight and baseline levels of locomotor activity in female mice and improved balance and strength in male mice, compared to sedentary-control mice. WR resulted in key metabolic adaptations in skeletal muscle, associated with an increased activity of the sirtuin 1-AMP-activated protein kinase (AMPK)-PGC-1 alpha axis and changes in vascular endothelial growth factor A (Vegfa), glucose transporter type 4 (Glut4), and Cluster of Differentiation 36 (Cd36) gene expression. Overall, our data indicate that activity, balance, and strength decrease with age and that long-term WR may significantly improve the motor function in a mouse model of senescence in a gender-dependent manner.
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Affiliation(s)
| | - Jaume F. Lalanza
- />Institut de Neurociències, Departament de Psiquiatria i Medicina Legal, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - María Jesús Alvarez-López
- />Unitat de Farmacologia i Farmacognòsia, Facultat de Farmàcia, Institut de Biomedicina (IBUB), Universitat de Barcelona, Nucli Universitari de Pedralbes, 08028 Barcelona, Spain
| | - Marta Cosín-Tomás
- />Unitat de Farmacologia i Farmacognòsia, Facultat de Farmàcia, Institut de Biomedicina (IBUB), Universitat de Barcelona, Nucli Universitari de Pedralbes, 08028 Barcelona, Spain
| | - Christian Griñan-Ferré
- />Unitat de Farmacologia i Farmacognòsia, Facultat de Farmàcia, Institut de Biomedicina (IBUB), Universitat de Barcelona, Nucli Universitari de Pedralbes, 08028 Barcelona, Spain
| | - Merce Pallàs
- />Unitat de Farmacologia i Farmacognòsia, Facultat de Farmàcia, Institut de Biomedicina (IBUB), Universitat de Barcelona, Nucli Universitari de Pedralbes, 08028 Barcelona, Spain
- />Centros de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED), Barcelona, Spain
| | - Perla Kaliman
- />Instituto de Investigaciones Biomédicas August Pi i Sunyer (IDIBAPS), Villarroel 170, 08036 Barcelona, Spain
| | - Rosa M. Escorihuela
- />Institut de Neurociències, Departament de Psiquiatria i Medicina Legal, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
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41
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Wong CM, Wang Y, Lee JTH, Huang Z, Wu D, Xu A, Lam KSL. Adropin is a brain membrane-bound protein regulating physical activity via the NB-3/Notch signaling pathway in mice. J Biol Chem 2014; 289:25976-86. [PMID: 25074942 DOI: 10.1074/jbc.m114.576058] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Adropin is a highly conserved polypeptide that has been suggested to act as an endocrine factor that plays important roles in metabolic regulation, insulin sensitivity, and endothelial functions. However, in this study, we provide evidence demonstrating that adropin is a plasma membrane protein expressed abundantly in the brain. Using a yeast two-hybrid screening approach, we identified NB-3/Contactin 6, a brain-specific, non-canonical, membrane-tethered Notch1 ligand, as an interaction partner of adropin. Furthermore, this interaction promotes NB3-induced activation of Notch signaling and the expression of Notch target genes. We also generated and characterized adropin knockout mice to explore the role of adropin in vivo. Adropin knockout mice exhibited decreased locomotor activity and impaired motor coordination coupled with defective synapse formation, a phenotype similar to NB-3 knockout mice. Taken together, our data suggest that adropin is a membrane-bound protein that interacts with the brain-specific Notch1 ligand NB3. It regulates physical activity and motor coordination via the NB-3/Notch signaling pathway and plays an important role in cerebellum development in mice.
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Affiliation(s)
- Chi-Ming Wong
- From the State Key Laboratory of Pharmaceutical Biotechnology, Department of Medicine, Research Centre of Heart, Brain, Hormone and Healthy Aging, Li Ka Shing Faculty of Medicine, The University of Hong Kong and
| | - Yudong Wang
- From the State Key Laboratory of Pharmaceutical Biotechnology, Department of Medicine
| | - Jimmy Tsz Hang Lee
- From the State Key Laboratory of Pharmaceutical Biotechnology, Department of Medicine
| | - Zhe Huang
- From the State Key Laboratory of Pharmaceutical Biotechnology, Department of Medicine
| | - Donghai Wu
- the Guangzhou Institutes of Biomedicine and Health, Hong Kong, China
| | - Aimin Xu
- From the State Key Laboratory of Pharmaceutical Biotechnology, Department of Medicine, Research Centre of Heart, Brain, Hormone and Healthy Aging, Li Ka Shing Faculty of Medicine, The University of Hong Kong and Department of Pharmacology and Pharmacy,
| | - Karen Siu Ling Lam
- From the State Key Laboratory of Pharmaceutical Biotechnology, Department of Medicine, Research Centre of Heart, Brain, Hormone and Healthy Aging, Li Ka Shing Faculty of Medicine, The University of Hong Kong and
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42
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VIP-expressing dendritic cells protect against spontaneous autoimmune peripheral polyneuropathy. Mol Ther 2014; 22:1353-1363. [PMID: 24762627 DOI: 10.1038/mt.2014.77] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Accepted: 04/21/2014] [Indexed: 12/20/2022] Open
Abstract
The spontaneous autoimmune peripheral polyneuropathy (SAPP) model in B7-2 knockout nonobese diabetic mice mimics a progressive and unremitting course of chronic inflammatory demyelinating polyradiculoneuropathy (CIDP). In this study, bone marrow-derived dendritic cells (DCs) were transduced to express vasoactive intestinal polypeptide (VIP) using a lentiviral vector (LV-VIP). These transduced DCs (LV-VIP-DCs) were then injected intravenously (i.v.) into 16-week-old (before disease onset) and 21-week-old (after disease onset) SAPP mice in order to prevent or attenuate the disease. Outcome measures included behavioral tests, clinical and histological scoring, electrophysiology, real-time PCR, flow cytometry analyses, and enzyme-linked immunosorbent assay. LV-VIP-DCs were recruited to the inflamed sciatic nerve and reduced the expression of inflammatory cytokines. A single injection of LV-VIP-DC delayed the onset of disease, stabilized, and attenuated clinical signs correlating with ameliorated behavioral functions, reduced nerve demyelination, and improved nerve conduction. This proof-of-principle study is an important step potentially leading to a clinical translational study using DCs expressing VIP in cases of CIDP refractory to standard immunosuppressive therapy.
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43
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Aartsma-Rus A, van Putten M. Assessing functional performance in the mdx mouse model. J Vis Exp 2014. [PMID: 24747372 DOI: 10.3791/51303] [Citation(s) in RCA: 94] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Duchenne muscular dystrophy (DMD) is a severe and progressive muscle wasting disorder for which no cure is available. Nevertheless, several potential pharmaceutical compounds and gene therapy approaches have progressed into clinical trials. With improvement in muscle function being the most important end point in these trials, a lot of emphasis has been placed on setting up reliable, reproducible, and easy to perform functional tests to pre clinically assess muscle function, strength, condition, and coordination in the mdx mouse model for DMD. Both invasive and noninvasive tests are available. Tests that do not exacerbate the disease can be used to determine the natural history of the disease and the effects of therapeutic interventions (e.g. forelimb grip strength test, two different hanging tests using either a wire or a grid and rotarod running). Alternatively, forced treadmill running can be used to enhance disease progression and/or assess protective effects of therapeutic interventions on disease pathology. We here describe how to perform these most commonly used functional tests in a reliable and reproducible manner. Using these protocols based on standard operating procedures enables comparison of data between different laboratories.
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44
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Wisely EV, Xiang YK, Oddo S. Genetic suppression of β2-adrenergic receptors ameliorates tau pathology in a mouse model of tauopathies. Hum Mol Genet 2014; 23:4024-34. [PMID: 24626633 DOI: 10.1093/hmg/ddu116] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Accumulation of the microtubule-binding protein tau is a key event in several neurodegenerative disorders referred to as tauopathies, which include Alzheimer's disease, frontotemporal lobar degeneration, Pick's disease, progressive supranuclear palsy and corticobasal degeneration. Thus, understanding the molecular pathways leading to tau accumulation will have a major impact across multiple neurodegenerative disorders. To elucidate the pathways involved in tau pathology, we removed the gene encoding the beta-2 adrenergic receptors (β2ARs) from a mouse model overexpressing mutant human tau. Notably, the number of β2ARs is increased in brains of AD patients and epidemiological studies show that the use of beta-blockers decreases the incidence of AD. The mechanisms underlying these observations, however, are not clear. We show that the tau transgenic mice lacking the β2AR gene had a reduced mortality rate compared with the parental tau transgenic mice. Removing the gene encoding the β2ARs from the tau transgenic mice also significantly improved motor deficits. Neuropathologically, the improvement in lifespan and motor function was associated with a reduction in brain tau immunoreactivity and phosphorylation. Mechanistically, we provide compelling evidence that the β2AR-mediated changes in tau were linked to a reduction in the activity of GSK3β and CDK5, two of the major tau kinases. These studies provide a mechanistic link between β2ARs and tau and suggest the molecular basis linking the use of beta-blockers to a reduced incidence of AD. Furthermore, these data suggest that a detailed pharmacological modulation of β2ARs could be exploited to develop better therapeutic strategies for AD and other tauopathies.
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Affiliation(s)
- Elena V Wisely
- Department of Physiology and The Barshop Institute for Longevity and Aging Studies, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | - Yang K Xiang
- Department of Pharmacology, University of California at Davis, Davis, CA, USA
| | - Salvatore Oddo
- Department of Physiology and The Barshop Institute for Longevity and Aging Studies, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA Banner Sun Health Research Institute, Sun City, AZ, USA Department of Basic Medical Sciences, University of Arizona College of Medicine-Phoenix, Sun City, AZ, USA
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