1
|
Lecca D, Jung YJ, Scerba MT, Hwang I, Kim YK, Kim S, Modrow S, Tweedie D, Hsueh S, Liu D, Luo W, Glotfelty E, Li Y, Wang J, Luo Y, Hoffer BJ, Kim DS, McDevitt RA, Greig NH. Role of chronic neuroinflammation in neuroplasticity and cognitive function: A hypothesis. Alzheimers Dement 2022; 18:2327-2340. [PMID: 35234334 PMCID: PMC9437140 DOI: 10.1002/alz.12610] [Citation(s) in RCA: 43] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 12/21/2021] [Accepted: 01/03/2022] [Indexed: 01/31/2023]
Abstract
OBJECTIVE Evaluating the efficacy of 3,6'-dithioPomalidomide in 5xFAD Alzheimer's disease (AD) mice to test the hypothesis that neuroinflammation is directly involved in the development of synaptic/neuronal loss and cognitive decline. BACKGROUND Amyloid-β (Aβ) or tau-focused clinical trials have proved unsuccessful in mitigating AD-associated cognitive impairment. Identification of new drug targets is needed. Neuroinflammation is a therapeutic target in neurodegenerative disorders, and TNF-α a pivotal neuroinflammatory driver. NEW HYPOTHESIS AD-associated chronic neuroinflammation directly drives progressive synaptic/neuronal loss and cognitive decline. Pharmacologically mitigating microglial/astrocyte activation without altering Aβ generation will define the role of neuroinflammation in AD progression. MAJOR CHALLENGES Difficulty of TNF-α-lowering compounds reaching brain, and identification of a therapeutic-time window to preserve the beneficial role of neuroinflammatory processes. LINKAGE TO OTHER MAJOR THEORIES Microglia/astroglia are heavily implicated in maintenance of synaptic plasticity/function in healthy brain and are disrupted by Aβ. Mitigation of chronic gliosis can restore synaptic homeostasis/cognitive function.
Collapse
Affiliation(s)
- Daniela Lecca
- Drug Design & Development SectionTranslational Gerontology BranchIntramural Research Program National Institute on AgingNIHBaltimoreMarylandUSA
| | - Yoo Jin Jung
- Drug Design & Development SectionTranslational Gerontology BranchIntramural Research Program National Institute on AgingNIHBaltimoreMarylandUSA,Stanford Neurosciences Interdepartmental ProgramStanford University School of MedicineStanfordCaliforniaUSA
| | - Michael T. Scerba
- Drug Design & Development SectionTranslational Gerontology BranchIntramural Research Program National Institute on AgingNIHBaltimoreMarylandUSA
| | | | | | - Sun Kim
- Aevis Bio, Inc.DaejeonRepublic of Korea
| | - Sydney Modrow
- Comparative Medicine SectionNational Institute on AgingBaltimoreMarylandUSA
| | - David Tweedie
- Drug Design & Development SectionTranslational Gerontology BranchIntramural Research Program National Institute on AgingNIHBaltimoreMarylandUSA
| | - Shih‐Chang Hsueh
- Drug Design & Development SectionTranslational Gerontology BranchIntramural Research Program National Institute on AgingNIHBaltimoreMarylandUSA
| | - Dong Liu
- Drug Design & Development SectionTranslational Gerontology BranchIntramural Research Program National Institute on AgingNIHBaltimoreMarylandUSA
| | - Weiming Luo
- Drug Design & Development SectionTranslational Gerontology BranchIntramural Research Program National Institute on AgingNIHBaltimoreMarylandUSA
| | - Elliot Glotfelty
- Drug Design & Development SectionTranslational Gerontology BranchIntramural Research Program National Institute on AgingNIHBaltimoreMarylandUSA,Department of NeuroscienceKarolinska InstitutetStockholmSweden
| | - Yazhou Li
- Drug Design & Development SectionTranslational Gerontology BranchIntramural Research Program National Institute on AgingNIHBaltimoreMarylandUSA
| | - Jia‐Yi Wang
- Graduate Institute of Medical SciencesTaipei Medical UniversityTaipeiTaiwan,Department of NeurosurgeryTaipei Medical University HospitalTaipei Medical UniversityTaipeiTaiwan,Neuroscience Research CenterTaipei Medical UniversityTaipeiTaiwan
| | - Yu Luo
- Department of Molecular Genetics and BiochemistryCollege of MedicineUniversity of CincinnatiCincinnatiOhioUSA
| | - Barry J. Hoffer
- Department of Neurological SurgeryCase Western Reserve University HospitalClevelandOhioUSA
| | - Dong Seok Kim
- Aevis Bio, Inc.DaejeonRepublic of Korea,AevisBio, Inc.GaithersburgMarylandUSA
| | - Ross A. McDevitt
- Comparative Medicine SectionNational Institute on AgingBaltimoreMarylandUSA
| | - Nigel H. Greig
- Drug Design & Development SectionTranslational Gerontology BranchIntramural Research Program National Institute on AgingNIHBaltimoreMarylandUSA
| |
Collapse
|
2
|
Bader M, Li Y, Lecca D, Rubovitch V, Tweedie D, Glotfelty E, Rachmany L, Kim HK, Choi HI, Hoffer BJ, Pick CG, Greig NH, Kim DS. Pharmacokinetics and efficacy of PT302, a sustained-release Exenatide formulation, in a murine model of mild traumatic brain injury. Neurobiol Dis 2018; 124:439-453. [PMID: 30471415 DOI: 10.1016/j.nbd.2018.11.023] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 10/29/2018] [Accepted: 11/20/2018] [Indexed: 12/15/2022] Open
Abstract
Traumatic brain injury (TBI) is a neurodegenerative disorder for which no effective pharmacological treatment is available. Glucagon-like peptide 1 (GLP-1) analogues such as Exenatide have previously demonstrated neurotrophic and neuroprotective effects in cellular and animal models of TBI. However, chronic or repeated administration was needed for efficacy. In this study, the pharmacokinetics and efficacy of PT302, a clinically available sustained-release Exenatide formulation (SR-Exenatide) were evaluated in a concussive mild (m)TBI mouse model. A single subcutaneous (s.c.) injection of PT302 (0.6, 0.12, and 0.024 mg/kg) was administered and plasma Exenatide concentrations were time-dependently measured over 3 weeks. An initial rapid regulated release of Exenatide in plasma was followed by a secondary phase of sustained-release in a dose-dependent manner. Short- and longer-term (7 and 30 day) cognitive impairments (visual and spatial deficits) induced by weight drop mTBI were mitigated by a single post-injury treatment with Exenatide delivered by s.c. injection of PT302 in clinically translatable doses. Immunohistochemical evaluation of neuronal cell death and inflammatory markers, likewise, cross-validated the neurotrophic and neuroprotective effects of SR-Exenatide in this mouse mTBI model. Exenatide central nervous system concentrations were 1.5% to 2.0% of concomitant plasma levels under steady-state conditions. These data demonstrate a positive beneficial action of PT302 in mTBI. This convenient single, sustained-release dosing regimen also has application for other neurological disorders, such as Alzheimer's disease, Parkinson's disease, multiple system atrophy and multiple sclerosis where prior preclinical studies, likewise, have demonstrated positive Exenatide actions.
Collapse
Affiliation(s)
- Miaad Bader
- Department of Anatomy and Anthropology, Sackler School of Medicine, Tel-Aviv University, Tel-Aviv 69978, Israel
| | - Yazhou Li
- Drug Design and Development Section, Translational Gerontology Branch, Intramural Research Program, National Institutes of Health, National Institute on Aging, Baltimore, MD, USA
| | - Daniela Lecca
- Drug Design and Development Section, Translational Gerontology Branch, Intramural Research Program, National Institutes of Health, National Institute on Aging, Baltimore, MD, USA
| | - Vardit Rubovitch
- Department of Anatomy and Anthropology, Sackler School of Medicine, Tel-Aviv University, Tel-Aviv 69978, Israel
| | - David Tweedie
- Drug Design and Development Section, Translational Gerontology Branch, Intramural Research Program, National Institutes of Health, National Institute on Aging, Baltimore, MD, USA
| | - Elliot Glotfelty
- Drug Design and Development Section, Translational Gerontology Branch, Intramural Research Program, National Institutes of Health, National Institute on Aging, Baltimore, MD, USA; Department of Neuroscience, Karolinska Institute, Stockholm, Sweden
| | - Lital Rachmany
- Department of Anatomy and Anthropology, Sackler School of Medicine, Tel-Aviv University, Tel-Aviv 69978, Israel
| | - Hee Kyung Kim
- Peptron Inc., Yuseong-gu, Daejeon, Republic of Korea
| | - Ho-Il Choi
- Peptron Inc., Yuseong-gu, Daejeon, Republic of Korea
| | - Barry J Hoffer
- Department of Neurosurgery, Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Chaim G Pick
- Department of Anatomy and Anthropology, Sackler School of Medicine, Tel-Aviv University, Tel-Aviv 69978, Israel; Sagol School of Neuroscience, Tel-Aviv University, Tel-Aviv 69978, Israel; Center for the Biology of Addictive Diseases, Tel-Aviv University, Tel-Aviv 69978, Israel
| | - Nigel H Greig
- Drug Design and Development Section, Translational Gerontology Branch, Intramural Research Program, National Institutes of Health, National Institute on Aging, Baltimore, MD, USA.
| | - Dong Seok Kim
- Drug Design and Development Section, Translational Gerontology Branch, Intramural Research Program, National Institutes of Health, National Institute on Aging, Baltimore, MD, USA; Department of Neuroscience, Karolinska Institute, Stockholm, Sweden
| |
Collapse
|
3
|
McNutt P, Tuznik K, Nelson M, Adkins A, Lyman M, Glotfelty E, Hughes J, Hamilton T. Structural, morphological, and functional correlates of corneal endothelial toxicity following corneal exposure to sulfur mustard vapor. Invest Ophthalmol Vis Sci 2013; 54:6735-44. [PMID: 24045986 DOI: 10.1167/iovs.13-12402] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
PURPOSE Sulfur mustard (SM) is a highly reactive vesicant that causes severe ocular injuries. Following exposure to moderate or high doses, a subset of victims develops a chronic injury known as mustard gas keratopathy (MGK) involving a keratitis of unknown etiopathogenesis with secondary keratopathies such as persistent epithelial lesions, corneal neovascularization, and progressive corneal degeneration. This study was designed to determine whether SM exposure evokes acute endothelial toxicity and to determine whether endothelial pathologies were specifically observed in MGK corneas as opposed to healed corneas. METHODS Corneas of New Zealand white rabbits were exposed to SM vapor, and the corneal endothelium was evaluated at 1 day and 8 weeks using scanning electron microscopy (SEM), transmission electron microscopy (TEM), in vivo confocal microscopy (IVM), and fluorescent microscopy. Barrier function was measured by uptake of a fluorescent dye injected into the anterior chamber. RESULTS A centripetal endothelial injury at 1 day was observed by SEM, TEM, IVM, and fluorescent microscopy. In vivo confocal microscopy revealed additional cytotoxicity between 1 and 13 days. In contrast to healed corneas, which appeared similar to sham-exposed naive eyes at 8 weeks, MGK corneas exhibited significant evidence of continued pathological changes in the endothelium. CONCLUSIONS Endothelial toxicity occurs at the right time and with the appropriate pathophysiology to contribute to MGK. Based on these findings, we propose a model that explains the relationships among SM dose, the biphasic progression, and the various clinical trajectories of corneal SM injury and that provides a mechanism for temporal variations in MGK onset. Finally, we discuss the implications for the management of SM casualties.
Collapse
Affiliation(s)
- Patrick McNutt
- United States Army Medical Research Institute of Chemical Defense, Aberdeen Proving Grounds, Maryland
| | | | | | | | | | | | | | | |
Collapse
|