1
|
Sanchez‐Martinez S, Nguyen K, Biswas S, Nicholson V, Romanyuk AV, Ramirez J, Kc S, Akter A, Childs C, Meese EK, Usher ET, Ginell GM, Yu F, Gollub E, Malferrari M, Francia F, Venturoli G, Martin EW, Caporaletti F, Giubertoni G, Woutersen S, Sukenik S, Woolfson DN, Holehouse AS, Boothby TC. Labile assembly of a tardigrade protein induces biostasis. Protein Sci 2024; 33:e4941. [PMID: 38501490 PMCID: PMC10949331 DOI: 10.1002/pro.4941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 02/01/2024] [Accepted: 02/09/2024] [Indexed: 03/20/2024]
Abstract
Tardigrades are microscopic animals that survive desiccation by inducing biostasis. To survive drying tardigrades rely on intrinsically disordered CAHS proteins, which also function to prevent perturbations induced by drying in vitro and in heterologous systems. CAHS proteins have been shown to form gels both in vitro and in vivo, which has been speculated to be linked to their protective capacity. However, the sequence features and mechanisms underlying gel formation and the necessity of gelation for protection have not been demonstrated. Here we report a mechanism of fibrillization and gelation for CAHS D similar to that of intermediate filament assembly. We show that in vitro, gelation restricts molecular motion, immobilizing and protecting labile material from the harmful effects of drying. In vivo, we observe that CAHS D forms fibrillar networks during osmotic stress. Fibrillar networking of CAHS D improves survival of osmotically shocked cells. We observe two emergent properties associated with fibrillization; (i) prevention of cell volume change and (ii) reduction of metabolic activity during osmotic shock. We find that there is no significant correlation between maintenance of cell volume and survival, while there is a significant correlation between reduced metabolism and survival. Importantly, CAHS D's fibrillar network formation is reversible and metabolic rates return to control levels after CAHS fibers are resolved. This work provides insights into how tardigrades induce reversible biostasis through the self-assembly of labile CAHS gels.
Collapse
Affiliation(s)
| | - K. Nguyen
- Department of Molecular BiologyUniversity of WyomingLaramieWyomingUSA
| | - S. Biswas
- Department of Molecular BiologyUniversity of WyomingLaramieWyomingUSA
| | - V. Nicholson
- Department of Molecular BiologyUniversity of WyomingLaramieWyomingUSA
| | - A. V. Romanyuk
- School of ChemistryUniversity of BristolBristolUK
- Max Planck‐Bristol Centre for Minimal BiologyUniversity of BristolBristolUK
| | - J. Ramirez
- Department of Molecular BiologyUniversity of WyomingLaramieWyomingUSA
| | - S. Kc
- Department of Molecular BiologyUniversity of WyomingLaramieWyomingUSA
| | - A. Akter
- Department of Molecular BiologyUniversity of WyomingLaramieWyomingUSA
| | - C. Childs
- Department of Molecular BiologyUniversity of WyomingLaramieWyomingUSA
| | - E. K. Meese
- Department of Molecular BiologyUniversity of WyomingLaramieWyomingUSA
| | - E. T. Usher
- Department of Biochemistry and Molecular BiophysicsWashington University School of MedicineSt. LouisMissouriUSA
- Center for Biomolecular CondensatesWashington University in St. LouisSt. LouisMissouriUSA
| | - G. M. Ginell
- Department of Biochemistry and Molecular BiophysicsWashington University School of MedicineSt. LouisMissouriUSA
- Center for Biomolecular CondensatesWashington University in St. LouisSt. LouisMissouriUSA
| | - F. Yu
- Quantitative Systems Biology ProgramUniversity of California MercedMercedCaliforniaUSA
| | - E. Gollub
- Department of Chemistry and BiochemistryUniversity of California MercedMercedCaliforniaUSA
| | - M. Malferrari
- Dipartimento di Chimica “Giacomo Ciamician”Università di BolognaBolognaItaly
| | - F. Francia
- Laboratorio di Biochimica e Biofisica Molecolare, Dipartimento di Farmacia e Biotecnologie, FaBiTUniversità di BolognaBolognaItaly
| | - G. Venturoli
- Laboratorio di Biochimica e Biofisica Molecolare, Dipartimento di Farmacia e Biotecnologie, FaBiTUniversità di BolognaBolognaItaly
- Consorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia (CNISM), c/o Dipartimento di Fisica e Astronomia (DIFA)Università di BolognaBolognaItaly
| | - E. W. Martin
- Department of Structural BiologySt. Jude Children's Research HospitalMemphisTennesseeUSA
| | - F. Caporaletti
- Van't Hoff Institute for Molecular SciencesUniversity of AmsterdamAmsterdamThe Netherlands
| | - G. Giubertoni
- Van't Hoff Institute for Molecular SciencesUniversity of AmsterdamAmsterdamThe Netherlands
| | - S. Woutersen
- Van't Hoff Institute for Molecular SciencesUniversity of AmsterdamAmsterdamThe Netherlands
| | - S. Sukenik
- Quantitative Systems Biology ProgramUniversity of California MercedMercedCaliforniaUSA
- Department of Chemistry and BiochemistryUniversity of California MercedMercedCaliforniaUSA
| | - D. N. Woolfson
- School of ChemistryUniversity of BristolBristolUK
- Max Planck‐Bristol Centre for Minimal BiologyUniversity of BristolBristolUK
- School of BiochemistryUniversity of Bristol, Biomedical Sciences BuildingBristolUK
| | - A. S. Holehouse
- Department of Biochemistry and Molecular BiophysicsWashington University School of MedicineSt. LouisMissouriUSA
- Center for Biomolecular CondensatesWashington University in St. LouisSt. LouisMissouriUSA
| | - T. C. Boothby
- Department of Molecular BiologyUniversity of WyomingLaramieWyomingUSA
| |
Collapse
|
2
|
Ortega‐Cruz D, Bress KS, Gazula H, Rabano A, Iglesias JE, Strange BA. Three-dimensional histology reveals dissociable human hippocampal long-axis gradients of Alzheimer's pathology. Alzheimers Dement 2024; 20:2606-2619. [PMID: 38369763 PMCID: PMC11032559 DOI: 10.1002/alz.13695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 12/04/2023] [Accepted: 12/18/2023] [Indexed: 02/20/2024]
Abstract
INTRODUCTION Three-dimensional (3D) histology analyses are essential to overcome sampling variability and understand pathological differences beyond the dissection axis. We present Path2MR, the first pipeline allowing 3D reconstruction of sparse human histology without a magnetic resonance imaging (MRI) reference. We implemented Path2MR with post-mortem hippocampal sections to explore pathology gradients in Alzheimer's disease. METHODS Blockface photographs of brain hemisphere slices are used for 3D reconstruction, from which an MRI-like image is generated using machine learning. Histology sections are aligned to the reconstructed hemisphere and subsequently to an atlas in standard space. RESULTS Path2MR successfully registered histological sections to their anatomic position along the hippocampal longitudinal axis. Combined with histopathology quantification, we found an expected peak of tau pathology at the anterior end of the hippocampus, whereas amyloid-beta (Aβ) displayed a quadratic anterior-posterior distribution. CONCLUSION Path2MR, which enables 3D histology using any brain bank data set, revealed significant differences along the hippocampus between tau and Aβ. HIGHLIGHTS Path2MR enables three-dimensional (3D) brain reconstruction from blockface dissection photographs. This pipeline does not require dense specimen sampling or a subject-specific magnetic resonance (MR) image. Anatomically consistent mapping of hippocampal sections was obtained with Path2MR. Our analyses revealed an anterior-posterior gradient of hippocampal tau pathology. In contrast, the peak of amyloid-beta (Aβ) deposition was closer to the hippocampal body.
Collapse
Affiliation(s)
- Diana Ortega‐Cruz
- Laboratory for Clinical Neuroscience, Center for Biomedical TechnologyUniversidad Politécnica de Madrid, IdISSCMadridSpain
- Alzheimer's Disease Research UnitCIEN Foundation, Queen Sofia Foundation Alzheimer CenterMadridSpain
| | - Kimberly S. Bress
- Alzheimer's Disease Research UnitCIEN Foundation, Queen Sofia Foundation Alzheimer CenterMadridSpain
- Present address:
Vanderbilt University School of MedicineNashvilleTennesseeUSA
| | - Harshvardhan Gazula
- Martinos Center for Biomedical ImagingMassachusetts General Hospital and Harvard Medical SchoolBostonMassachusettsUSA
| | - Alberto Rabano
- Alzheimer's Disease Research UnitCIEN Foundation, Queen Sofia Foundation Alzheimer CenterMadridSpain
| | - Juan Eugenio Iglesias
- Martinos Center for Biomedical ImagingMassachusetts General Hospital and Harvard Medical SchoolBostonMassachusettsUSA
- Computer Science and Artificial Intelligence LaboratoryMassachusetts Institute of TechnologyBostonMassachusettsUSA
- Centre for Medical Image ComputingUniversity College LondonLondonUK
| | - Bryan A. Strange
- Laboratory for Clinical Neuroscience, Center for Biomedical TechnologyUniversidad Politécnica de Madrid, IdISSCMadridSpain
- Alzheimer's Disease Research UnitCIEN Foundation, Queen Sofia Foundation Alzheimer CenterMadridSpain
| |
Collapse
|
3
|
Davis TM, Luca K, Sudmeier LJ, Buchwald ZS, Khan MK, Yang X, Schreibmann E, Zhang J, Roper J. Total scalp irradiation: A study comparing multiple types of bolus and VMAT optimization techniques. J Appl Clin Med Phys 2024; 25:e14260. [PMID: 38243628 PMCID: PMC11005987 DOI: 10.1002/acm2.14260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 11/13/2023] [Accepted: 12/19/2023] [Indexed: 01/21/2024] Open
Abstract
PURPOSE To investigate bolus design and VMAT optimization settings for total scalp irradiation. METHODS Three silicone bolus designs (flat, hat, and custom) from .decimal were evaluated for adherence to five anthropomorphic head phantoms. Flat bolus was cut from a silicone sheet. Generic hat bolus resembles an elongated swim cap while custom bolus is manufactured by injecting silicone into a 3D printed mold. Bolus placement time was recorded. Air gaps between bolus and scalp were quantified on CT images. The dosimetric effect of air gaps on target coverage was evaluated in a treatment planning study where the scalp was planned to 60 Gy in 30 fractions. A noncoplanar VMAT technique based on gEUD penalties was investigated that explored the full range of gEUD alpha values to determine which settings achieve sufficient target coverage while minimizing brain dose. ANOVA and the t-test were used to evaluate statistically significant differences (threshold = 0.05). RESULTS The flat bolus took 32 ± 5.9 min to construct and place, which was significantly longer (p < 0.001) compared with 0.67 ± 0.2 min for the generic hat bolus or 0.53 ± 0.10 min for the custom bolus. The air gap volumes were 38 ± 9.3 cc, 32 ± 14 cc, and 17 ± 7.0 cc for the flat, hat, and custom boluses, respectively. While the air gap differences between the flat and custom boluses were significant (p = 0.011), there were no significant dosimetric differences in PTV coverage at V57Gy or V60Gy. In the VMAT optimization study, a gEUD alpha of 2 was found to minimize the mean brain dose. CONCLUSIONS Two challenging aspects of total scalp irradiation were investigated: bolus design and plan optimization. Results from this study show opportunities to shorten bolus fabrication time during simulation and create high quality treatment plans using a straightforward VMAT template with simple optimization settings.
Collapse
Affiliation(s)
- Tanisha M. Davis
- Medical Dosimetry ProgramSouthern Illinois UniversityCarbondaleIllinoisUSA
- Department of Radiation OncologyEmory UniversityAtlantaGeorgiaUSA
| | - Kirk Luca
- Department of Radiation OncologyEmory UniversityAtlantaGeorgiaUSA
| | - Lisa J. Sudmeier
- Department of Radiation OncologyEmory UniversityAtlantaGeorgiaUSA
| | | | - Mohammad K. Khan
- Department of Radiation OncologyEmory UniversityAtlantaGeorgiaUSA
| | - Xiaofeng Yang
- Department of Radiation OncologyEmory UniversityAtlantaGeorgiaUSA
| | | | - Jiahan Zhang
- Department of Radiation OncologyEmory UniversityAtlantaGeorgiaUSA
| | - Justin Roper
- Department of Radiation OncologyEmory UniversityAtlantaGeorgiaUSA
| |
Collapse
|
4
|
Chemparathy DT, Ray S, Ochs C, Ferguson N, Gawande DY, Dravid SM, Callen S, Sil S, Buch S. Neuropathogenic role of astrocyte-derived extracellular vesicles in HIV-associated neurocognitive disorders. J Extracell Vesicles 2024; 13:e12439. [PMID: 38647111 PMCID: PMC11034007 DOI: 10.1002/jev2.12439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 03/22/2024] [Accepted: 04/04/2024] [Indexed: 04/25/2024] Open
Abstract
Our previous findings demonstrated that astrocytic HIF-1α plays a major role in HIV-1 Tat-mediated amyloidosis which can lead to Alzheimer's-like pathology-a comorbidity of HIV-Associated Neurocognitive Disorders (HAND). These amyloids can be shuttled in extracellular vesicles, and we sought to assess whether HIV-1 Tat stimulated astrocyte-derived EVs (ADEVs) containing the toxic amyloids could result in neuronal injury in vitro and in vivo. We thus hypothesized that blocking HIF-1α could likely mitigate HIV-1 Tat-ADEV-mediated neuronal injury. Rat hippocampal neurons when exposed to HIV-1 Tat-ADEVs carrying the toxic amyloids exhibited amyloid accumulation and synaptodendritic injury, leading to functional loss as evidenced by alterations in miniature excitatory post synaptic currents. The silencing of astrocytic HIF-1α not only reduced the biogenesis of ADEVs, as well as amyloid cargos, but also ameliorated neuronal synaptodegeneration. Next, we determined the effect of HIV-1 Tat-ADEVs carrying amyloids in the hippocampus of naive mice brains. Naive mice receiving the HIV-1 Tat-ADEVs, exhibited behavioural changes, and Alzheimer's 's-like pathology accompanied by synaptodegeneration. This impairment(s) was not observed in mice injected with HIF-1α silenced ADEVs. This is the first report demonstrating the role of amyloid-carrying ADEVs in mediating synaptodegeneration leading to behavioural changes associated with HAND and highlights the protective role of HIF-1α.
Collapse
Affiliation(s)
- Divya T. Chemparathy
- Department of Pharmacology and Experimental NeuroscienceUniversity of Nebraska Medical CenterOmahaNebraskaUSA
| | - Sudipta Ray
- Department of Pharmacology and Experimental NeuroscienceUniversity of Nebraska Medical CenterOmahaNebraskaUSA
| | - Chase Ochs
- Department of Pharmacology and Experimental NeuroscienceUniversity of Nebraska Medical CenterOmahaNebraskaUSA
| | - Natasha Ferguson
- Department of Pharmacology and Experimental NeuroscienceUniversity of Nebraska Medical CenterOmahaNebraskaUSA
| | - Dinesh Y. Gawande
- Department of Pharmacology and NeuroscienceCreighton UniversityOmahaNebraskaUSA
| | - Shashank M. Dravid
- Department of Pharmacology and NeuroscienceCreighton UniversityOmahaNebraskaUSA
| | - Shannon Callen
- Department of Pharmacology and Experimental NeuroscienceUniversity of Nebraska Medical CenterOmahaNebraskaUSA
| | - Susmita Sil
- Department of Pharmacology and Experimental NeuroscienceUniversity of Nebraska Medical CenterOmahaNebraskaUSA
| | - Shilpa Buch
- Department of Pharmacology and Experimental NeuroscienceUniversity of Nebraska Medical CenterOmahaNebraskaUSA
| |
Collapse
|
5
|
Dong B, Mahapatra S, Clark MG, Carlsen MS, Mohn KJ, Ma S, Brasseale KA, Crim G, Zhang C. Spatiotemporally Precise Optical Manipulation of Intracellular Molecular Activities. Adv Sci (Weinh) 2024; 11:e2307342. [PMID: 38279563 PMCID: PMC10987104 DOI: 10.1002/advs.202307342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 12/15/2023] [Indexed: 01/28/2024]
Abstract
Controlling chemical processes in live cells is a challenging task. The spatial heterogeneity of biochemical reactions in cells is often overlooked by conventional means of incubating cells with desired chemicals. A comprehensive understanding of spatially diverse biochemical processes requires precise control over molecular activities at the subcellular level. Herein, a closed-loop optoelectronic control system is developed that allows the manipulation of biomolecular activities in live cells at high spatiotemporal precision. Chemical-selective fluorescence signals are utilized to command lasers that trigger specific chemical processes or control the activation of photoswitchable inhibitors at desired targets. This technology is fully compatible with laser scanning confocal fluorescence microscopes. The authors demonstrate selective interactions of a 405 nm laser with targeted organelles and simultaneous monitoring of cell responses by fluorescent protein signals. Notably, blue laser interaction with the endoplasmic reticulum leads to a more pronounced reduction in cytosolic green fluorescent protein signals in comparison to that with nuclei and lipid droplets. Moreover, when combined with a photoswitchable inhibitor, microtubule polymerization is selectively inhibited within the subcellular compartments. This technology enables subcellular spatiotemporal optical manipulation over chemical processes and drug activities, exclusively at desired targets, while minimizing undesired effects on non-targeted locations.
Collapse
Affiliation(s)
- Bin Dong
- Department of ChemistryPurdue University560 Oval Dr.West LafayetteIN47907USA
| | - Shivam Mahapatra
- Department of ChemistryPurdue University560 Oval Dr.West LafayetteIN47907USA
| | - Matthew G. Clark
- Department of ChemistryPurdue University560 Oval Dr.West LafayetteIN47907USA
| | - Mark S. Carlsen
- Department of ChemistryPurdue University560 Oval Dr.West LafayetteIN47907USA
| | - Karsten J. Mohn
- Department of ChemistryPurdue University560 Oval Dr.West LafayetteIN47907USA
| | - Seohee Ma
- Department of ChemistryPurdue University560 Oval Dr.West LafayetteIN47907USA
| | - Kent A. Brasseale
- Department of ChemistryPurdue University560 Oval Dr.West LafayetteIN47907USA
| | - Grace Crim
- Department of ChemistryPurdue University560 Oval Dr.West LafayetteIN47907USA
| | - Chi Zhang
- Department of ChemistryPurdue University560 Oval Dr.West LafayetteIN47907USA
- Purdue Center for Cancer Research201 S. University St.West LafayetteIN47907USA
- Purdue Institute of Inflammation, Immunology, and Infectious Disease207 S. Martin Jischke Dr.West LafayetteIN47907USA
| |
Collapse
|
6
|
Ryoo H, Giovanni R, Kimmel H, Jain I, Underhill GH. Combinatorial Microgels for 3D ECM Screening and Heterogeneous Microenvironmental Culture of Primary Human Hepatic Stellate Cells. Adv Sci (Weinh) 2024; 11:e2303128. [PMID: 38348560 PMCID: PMC11022709 DOI: 10.1002/advs.202303128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 11/03/2023] [Indexed: 02/15/2024]
Abstract
Nonalcoholic fatty liver disease affects 30% of the United States population and its progression can lead to nonalcoholic steatohepatitis (NASH), and increased risks for cirrhosis and hepatocellular carcinoma. NASH is characterized by a highly heterogeneous liver microenvironment created by the fibrotic activity of hepatic stellate cells (HSCs). While HSCs have been widely studied in 2D, further advancements in physiologically relevant 3D culture platforms for the in vitro modeling of these heterogeneous environments are needed. In this study, the use of stiffness-variable, extracellular matrix (ECM) protein-conjugated polyethylene glycol microgels as 3D cell culture scaffolds to modulate HSC activation is demonstrated. These microgels as a high throughput ECM screening system to identify HSC matrix remodeling and metabolic activities in distinct heterogeneous microenvironmental conditions are further employed. The 6 kPa fibronectin microgels are shown to significantly increase HSC matrix remodeling and metabolic activities in single or multiple-component microenvironments. Overall, heterogeneous microenvironments consisting of multiple distinct ECM microgels promoted a decrease in HSC matrix remodeling and metabolic activities compared to homogeneous microenvironments. The study envisions this ECM screening platform being adapted to a broad number of cell types to aid the identification of ECM microenvironments that best recapitulate the desired phenotype, differentiation, or drug efficacy.
Collapse
Affiliation(s)
- Hyeon Ryoo
- Department of BioengineeringUniversity of Illinois at Urbana‐ChampaignUrbanaIL61801USA
| | - Regina Giovanni
- Department of BioengineeringUniversity of Illinois at Urbana‐ChampaignUrbanaIL61801USA
| | - Hannah Kimmel
- Department of BioengineeringUniversity of Illinois at Urbana‐ChampaignUrbanaIL61801USA
| | - Ishita Jain
- Department of BioengineeringUniversity of Illinois at Urbana‐ChampaignUrbanaIL61801USA
| | - Gregory H. Underhill
- Department of BioengineeringUniversity of Illinois at Urbana‐ChampaignUrbanaIL61801USA
| |
Collapse
|
7
|
Islam T, Kvartsberg H, Sehrawat A, Kac PR, Becker B, Olsson M, Abrahamson EE, Zetterberg H, Ikonomovic MD, Blennow K, Karikari TK. Novel ultrasensitive immunoassay for the selective quantification of tau oligomers and related soluble aggregates. Alzheimers Dement 2024; 20:2894-2905. [PMID: 38520322 PMCID: PMC11032517 DOI: 10.1002/alz.13711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 12/29/2023] [Accepted: 01/02/2024] [Indexed: 03/25/2024]
Abstract
INTRODUCTION Tau aggregation into paired helical filaments and neurofibrillary tangles is characteristic of Alzheimer's disease (AD) and related disorders. However, biochemical assays for the quantification of soluble, earlier-stage tau aggregates are lacking. We describe an immunoassay that is selective for tau oligomers and related soluble aggregates over monomers. METHODS A homogeneous (single-antibody) immunoassay was developed using a novel anti-tau monoclonal antibody and validated with recombinant and brain tissue-derived tau. RESULTS The assay signals were concentration dependent for recombinant tau aggregates in solution but not monomers, and recognized peptides within, but not outside, the aggregation-prone microtubule binding region. The signals in inferior and middle frontal cortical tissue homogenates increased with neuropathologically determined Braak staging, and were higher in insoluble than soluble homogenized brain fractions. Autopsy-verified AD gave stronger signals than other neurodegenerative diseases. DISCUSSION The quantitative oligomer/soluble aggregate-specific assay can identify soluble tau aggregates, including oligomers, from monomers in human and in vitro biospecimens. HIGHLIGHTS The aggregation of tau to form fibrils and neurofibrillary tangles is a key feature of Alzheimer's disease. However, biochemical assays for the quantification of oligomers/soluble aggregated forms of tau are lacking. We developed a new assay that preferentially binds to soluble tau aggregates, including oligomers and fibrils, versus monomers. The assay signal increased corresponding to the total protein content, Braak staging, and insolubility of the sequentially homogenized brain tissue fractions in an autopsy-verified cohort. The assay recognized tau peptides containing the microtubule binding region but not those covering the N- or C-terminal regions only.
Collapse
Affiliation(s)
- Tohidul Islam
- Department of Psychiatry and NeurochemistryInstitute of Neuroscience and PhysiologyThe Sahlgrenska Academy at the University of GothenburgMölndalSweden
| | - Hlin Kvartsberg
- Department of Psychiatry and NeurochemistryInstitute of Neuroscience and PhysiologyThe Sahlgrenska Academy at the University of GothenburgMölndalSweden
- Clinical Neurochemistry LaboratorySahlgrenska University HospitalMölndalSweden
| | - Anuradha Sehrawat
- Department of PsychiatrySchool of MedicineUniversity of PittsburghPittsburghPennsylvaniaUSA
| | - Przemysław R. Kac
- Department of Psychiatry and NeurochemistryInstitute of Neuroscience and PhysiologyThe Sahlgrenska Academy at the University of GothenburgMölndalSweden
| | - Bruno Becker
- Department of Psychiatry and NeurochemistryInstitute of Neuroscience and PhysiologyThe Sahlgrenska Academy at the University of GothenburgMölndalSweden
- Clinical Neurochemistry LaboratorySahlgrenska University HospitalMölndalSweden
| | - Maria Olsson
- Department of Psychiatry and NeurochemistryInstitute of Neuroscience and PhysiologyThe Sahlgrenska Academy at the University of GothenburgMölndalSweden
| | - Eric E. Abrahamson
- Department of NeurologySchool of MedicineUniversity of PittsburghPittsburghPennsylvaniaUSA
- Geriatric Research Education and Clinical CenterVA Pittsburgh HSPittsburghPennsylvaniaUSA
| | - Henrik Zetterberg
- Department of Psychiatry and NeurochemistryInstitute of Neuroscience and PhysiologyThe Sahlgrenska Academy at the University of GothenburgMölndalSweden
- Clinical Neurochemistry LaboratorySahlgrenska University HospitalMölndalSweden
- Department of Neurodegenerative DiseaseUCL Institute of NeurologyLondonUK
- UK Dementia Research InstituteUniversity College LondonLondonUK
- Hong Kong Center for Neurodegenerative DiseasesHKCeNDHong KongChina
- School of Medicine and Public HealthUniversity of Wisconsin–MadisonMadisonWisconsinUSA
| | - Milos D. Ikonomovic
- Clinical Neurochemistry LaboratorySahlgrenska University HospitalMölndalSweden
- Department of PsychiatrySchool of MedicineUniversity of PittsburghPittsburghPennsylvaniaUSA
- Geriatric Research Education and Clinical CenterVA Pittsburgh HSPittsburghPennsylvaniaUSA
| | - Kaj Blennow
- Department of Psychiatry and NeurochemistryInstitute of Neuroscience and PhysiologyThe Sahlgrenska Academy at the University of GothenburgMölndalSweden
- Clinical Neurochemistry LaboratorySahlgrenska University HospitalMölndalSweden
| | - Thomas K. Karikari
- Department of Psychiatry and NeurochemistryInstitute of Neuroscience and PhysiologyThe Sahlgrenska Academy at the University of GothenburgMölndalSweden
- Department of PsychiatrySchool of MedicineUniversity of PittsburghPittsburghPennsylvaniaUSA
| |
Collapse
|
8
|
Dutta A, Niu Z, Abdullah AM, Tiwari N, Biswas MAS, Li B, Lorestani F, Jing Y, Cheng H, Zhang S. Closely Packed Stretchable Ultrasound Array Fabricated with Surface Charge Engineering for Contactless Gesture and Materials Detection. Adv Sci (Weinh) 2024; 11:e2303403. [PMID: 38348559 PMCID: PMC11022739 DOI: 10.1002/advs.202303403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 01/14/2024] [Indexed: 03/20/2024]
Abstract
Communication with hand gestures plays a significant role in human-computer interaction by providing an intuitive and natural way for humans to communicate with machines. Ultrasound-based devices have shown promising results in contactless hand gesture recognition without requiring physical contact. However, it is challenging to fabricate a densely packed wearable ultrasound array. Here, a stretchable ultrasound array is demonstrated with closely packed transducer elements fabricated using surface charge engineering between pre-charged 1-3 Lead Zirconate Titanate (PZT) composite and thin polyimide film without using a microscope. The array exhibits excellent ultrasound properties with a wide bandwidth (≈57.1%) and high electromechanical coefficient (≈0.75). The ultrasound array can decipher gestures up to 10 cm in distance by using a contactless triboelectric module and identify materials from the time constant of the exponentially decaying impedance based on their triboelectric properties by utilizing the electrostatic induction phase. The newly proposed metric of the areal-time constant is material-specific and decreases monotonically from a highly positive human body (1.13 m2 s) to negatively charged polydimethylsiloxane (PDMS) (0.02 m2 s) in the triboelectric series. The capability of the closely packed ultrasound array to detect material along with hand gesture interpretation provides an additional dimension in the next-generation human-robot interaction.
Collapse
Affiliation(s)
- Ankan Dutta
- Department of Engineering Science and MechanicsThe Pennsylvania State UniversityUniversity ParkState CollegePA16802USA
- Center for Neural EngineeringThe Pennsylvania State UniversityUniversity ParkState CollegePA16802USA
| | - Zhenyuan Niu
- Department of Engineering Science and MechanicsThe Pennsylvania State UniversityUniversity ParkState CollegePA16802USA
| | - Abu Musa Abdullah
- Department of Engineering Science and MechanicsThe Pennsylvania State UniversityUniversity ParkState CollegePA16802USA
| | - Naveen Tiwari
- Department of Engineering Science and MechanicsThe Pennsylvania State UniversityUniversity ParkState CollegePA16802USA
- Center for Research in Biological Chemistry and Molecular Materials (CiQUS)University of Santiago de CompostelaSantiago de Compostela15705Spain
| | - Md Abu Sayeed Biswas
- Department of Engineering Science and MechanicsThe Pennsylvania State UniversityUniversity ParkState CollegePA16802USA
| | - Bowen Li
- Department of Engineering Science and MechanicsThe Pennsylvania State UniversityUniversity ParkState CollegePA16802USA
| | - Farnaz Lorestani
- Department of Engineering Science and MechanicsThe Pennsylvania State UniversityUniversity ParkState CollegePA16802USA
| | - Yun Jing
- Graduate Program in AcousticsThe Pennsylvania State UniversityUniversity ParkState CollegePA16802USA
| | - Huanyu Cheng
- Department of Engineering Science and MechanicsThe Pennsylvania State UniversityUniversity ParkState CollegePA16802USA
| | - Senhao Zhang
- Suzhou Institute of Biomedical Engineering and TechnologyUniversity of Science and Technology of ChinaSchool of Biomedical Engineering165085, 88 Keling Rd, Huqiu DistrictSuzhouJiangsu215163China
| |
Collapse
|
9
|
Mir MJ, Herndon NE, Wagle Shukla A, Wheeler‐Hegland K, McFarland NR. The Vocal Flutter of Multiple System Atrophy: A Parkinsonian-Type Phenomenon? Mov Disord Clin Pract 2024; 11:403-410. [PMID: 38314679 PMCID: PMC10982599 DOI: 10.1002/mdc3.13988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 01/04/2024] [Accepted: 01/08/2024] [Indexed: 02/06/2024] Open
Abstract
BACKGROUND Early features of multiple system atrophy (MSA) are similar to those in Parkinson's disease (PD), which can challenge differential diagnosis. Identifying clinical markers that help distinguish MSA from forms of parkinsonism is essential to promptly implement the most appropriate management plan. In the context of a thorough neurological evaluation, the presence of a vocal flutter might be considered a potential feature of MSA-parkinsonian type (MSA-P). CASES This case series describes clinical histories of 3 individuals with MSA-P. In each case, vocal flutter was detected during neurological and motor speech evaluations. It seemed to be a concomitant feature with the constellation of other signs and symptoms that led to the clinical diagnosis. LITERATURE REVIEW The vocal flutter may be described as pitch and loudness fluctuations during phonation. Different from a vocal tremor, the flutter phenomenon has higher oscillation frequencies. The neuropathological underpinnings of vocal flutter may be related to generalized laryngeal dysfunction that is commonly described in MSA-P. CONCLUSION Vocal flutter may be a unique speech feature in some individuals who have MSA-P. Future studies using perceptual and acoustic measures of speech are warranted to quantify these observations and directly compare to other MSA variants, PD, and a control group.
Collapse
Affiliation(s)
- Michela J. Mir
- Department of Physical TherapyBREATHE Center, University of FloridaGainesvilleFloridaUSA
| | - Nicole E. Herndon
- Department of Speech, Language, and Hearing SciencesCollege of Public Health and Health Professions, University of FloridaGainesvilleFloridaUSA
- UF Health Norman Fixel Institute for Neurological DiseasesGainesvilleFloridaUSA
| | - Aparna Wagle Shukla
- UF Health Norman Fixel Institute for Neurological DiseasesGainesvilleFloridaUSA
- Department of NeurologyCollege of Medicine, University of FloridaGainesvilleFloridaUSA
| | - Karen Wheeler‐Hegland
- Department of Speech, Language, and Hearing SciencesCollege of Public Health and Health Professions, University of FloridaGainesvilleFloridaUSA
- UF Health Norman Fixel Institute for Neurological DiseasesGainesvilleFloridaUSA
| | - Nikolaus R. McFarland
- UF Health Norman Fixel Institute for Neurological DiseasesGainesvilleFloridaUSA
- Department of NeurologyCollege of Medicine, University of FloridaGainesvilleFloridaUSA
| |
Collapse
|
10
|
Morlett Paredes A, Tarraf W, Gonzalez K, Stickel AM, Graves LV, Salmon DP, Kaur SS, Gallo LC, Isasi CR, Lipton RB, Lamar M, Goodman ZT, González HM. Normative data for the Digit Symbol Substitution for diverse Hispanic/Latino adults: Results from the Study of Latinos-Investigation of Neurocognitive Aging (SOL-INCA). Alzheimers Dement (Amst) 2024; 16:e12573. [PMID: 38566831 PMCID: PMC10983023 DOI: 10.1002/dad2.12573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 02/20/2024] [Accepted: 02/27/2024] [Indexed: 04/04/2024]
Abstract
INTRODUCTION Executive functioning and processing speed are crucial elements of neuropsychological assessment. To meet the needs of the Hispanic/Latino population, we aimed to provide normative data for the Digit Symbol Substitution (DSS) test. METHODS The target population for the Study of Latinos-Investigation of Neurocognitive Aging included six heritage backgrounds (n = 6177). Average age was 63.4 ± 8.3 years, 54.5% were female, and mean education was 11.0 ± 4.7 years. Participants were administered the DSS as part of a larger battery. Heritage-adjusted DSS scores, and percentile cut-points were created using survey-adjusted regression and quantile regression models. RESULTS Age, education, sex, heritage, and language preference were associated with DSS scores. DISCUSSION Significant correlates of DSS performance should be considered when evaluating cognitive performance. Representative DSS norms for Hispanics/Latinos will advance assessment and accuracy of neurocognitive disorder diagnosis in clinical practice. To facilitate interpretation, we provide norms to reduce test biases and developed an online dashboard. Highlights Normative data for the Digit Symbol Substitution (DSS) for diverse Hispanic/Latino adults: Results from the Study of Latinos-Investigation of Neurocognitive Aging (SOL-INCA) This study is the first to develop norms for the DSS test across four regions of the United States.Factors such as age, education, sex, and Hispanic/Latino heritage and language preference are associated with differences in executive functioning and information processing speed.We created norms and an online dashboard (https://solincalab.shinyapps.io/dsst_shiny/) providing an easily accessible tool to evaluate processing speed and executive functioning in Hispanic/Latino adults.
Collapse
Affiliation(s)
| | - Wassim Tarraf
- Institute of Gerontology & Department of Healthcare SciencesWayne State UniversityDetroitMichiganUSA
| | - Kevin Gonzalez
- Department of NeurosciencesUC San DiegoLa JollaCaliforniaUSA
| | - Ariana M. Stickel
- Department of PsychologySan Diego State UniversitySan DiegoCaliforniaUSA
| | - Lisa V. Graves
- Department of PsychologyCalifornia State University San MarcosSan MarcosCaliforniaUSA
| | - David P. Salmon
- Department of NeurosciencesUC San DiegoLa JollaCaliforniaUSA
| | - Sonya S. Kaur
- Department of NeurologyUniversity of MiamiMiamiFloridaUSA
| | - Linda C. Gallo
- Department of PsychologySan Diego State UniversitySan DiegoCaliforniaUSA
| | - Carmen R. Isasi
- Department of Epidemiology & Population HealthAlbert Einstein College of MedicineBronxNew YorkUSA
| | - Richard B. Lipton
- Department of NeurologyAlbert Einstein College of MedicineBronxNew YorkUSA
| | - Melissa Lamar
- Rush Alzheimer's Disease CenterRush University Medical CenterChicagoIllinoisUSA
- Institute for Minority Health ResearchUniversity of Illinois at ChicagoCollege of MedicineChicagoIllinoisUSA
| | | | | |
Collapse
|
11
|
Afrin S, Kirschen GW, Miyashita‐Ishiwata M, El Sabeh M, Borahay MA. Synergistic inhibition of progesterone receptor-A/B signalling by simvastatin and mifepristone in human uterine leiomyomas. Clin Transl Med 2024; 14:e1672. [PMID: 38649749 PMCID: PMC11035378 DOI: 10.1002/ctm2.1672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2024] [Revised: 04/04/2024] [Accepted: 04/08/2024] [Indexed: 04/25/2024] Open
Affiliation(s)
- Sadia Afrin
- Department of Gynecology and ObstetricsThe Johns Hopkins HospitalBaltimoreMarylandUSA
| | - Gregory W. Kirschen
- Department of Gynecology and ObstetricsThe Johns Hopkins HospitalBaltimoreMarylandUSA
| | | | - Malak El Sabeh
- Department of Obstetrics and GynecologyBaylor College of MedicineHoustonTexasUSA
| | - Mostafa A. Borahay
- Department of Gynecology and ObstetricsThe Johns Hopkins HospitalBaltimoreMarylandUSA
| |
Collapse
|
12
|
Rubinstein T, Brickman AM, Cheng B, Burkett S, Park H, Annavajhala MK, Uhlemann A, Andrews H, Gutierrez J, Paster BJ, Noble JM, Papapanou PN. Periodontitis and brain magnetic resonance imaging markers of Alzheimer's disease and cognitive aging. Alzheimers Dement 2024; 20:2191-2208. [PMID: 38278517 PMCID: PMC10984451 DOI: 10.1002/alz.13683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 12/11/2023] [Accepted: 12/12/2023] [Indexed: 01/28/2024]
Abstract
INTRODUCTION We examined the association of clinical, microbiological, and host response features of periodontitis with MRI markers of atrophy/cerebrovascular disease in the Washington Heights Inwood Columbia Aging Project (WHICAP) Ancillary Study of Oral Health. METHODS We analyzed 468 participants with clinical periodontal data, microbial plaque and serum samples, and brain MRIs. We tested the association of periodontitis features with MRI features, after adjusting for multiple risk factors for Alzheimer's disease/Alzheimer's disease-related dementia (AD/ADRD). RESULTS In fully adjusted models, having more teeth was associated with lower odds for infarcts, lower white matter hyperintensity (WMH) volume, higher entorhinal cortex volume, and higher cortical thickness. Higher extent of periodontitis was associated with lower entorhinal cortex volume and lower cortical thickness. Differential associations emerged between colonization by specific bacteria/serum antibacterial IgG responses and MRI outcomes. DISCUSSION In an elderly cohort, clinical, microbiological, and serological features of periodontitis were associated with MRI findings related to ADRD risk. Further investigation of causal associations is warranted.
Collapse
Affiliation(s)
- Tom Rubinstein
- Division of PeriodonticsSection of OralDiagnostic and Rehabilitation SciencesCollege of Dental MedicineNew YorkNew YorkUSA
| | - Adam M. Brickman
- Department of NeurologyVagelos College of Physicians and SurgeonsNew YorkNew YorkUSA
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain and Gertrude H. Sergievsky CenterNew YorkNew YorkUSA
| | - Bin Cheng
- Department of BiostatisticsMailman School of Public HealthNew YorkNew YorkUSA
| | - Sandra Burkett
- Division of PeriodonticsSection of OralDiagnostic and Rehabilitation SciencesCollege of Dental MedicineNew YorkNew YorkUSA
| | - Heekuk Park
- Division of Infectious DiseasesDepartment of MedicineVagelos College of Physicians and, Surgeons, Irving Medical CenterColumbia UniversityNew YorkNew YorkUSA
| | - Medini K. Annavajhala
- Division of Infectious DiseasesDepartment of MedicineVagelos College of Physicians and, Surgeons, Irving Medical CenterColumbia UniversityNew YorkNew YorkUSA
| | - Anne‐Catrin Uhlemann
- Division of Infectious DiseasesDepartment of MedicineVagelos College of Physicians and, Surgeons, Irving Medical CenterColumbia UniversityNew YorkNew YorkUSA
| | - Howard Andrews
- Department of BiostatisticsMailman School of Public HealthNew YorkNew YorkUSA
| | - Jose Gutierrez
- Department of NeurologyVagelos College of Physicians and SurgeonsNew YorkNew YorkUSA
| | - Bruce J. Paster
- The Forsyth InstituteCambridgeMassachusettsUSA
- Department of Oral Medicine, Infection and ImmunityHarvard School of Dental MedicineBostonMassachusettsUSA
| | - James M. Noble
- Department of NeurologyVagelos College of Physicians and SurgeonsNew YorkNew YorkUSA
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain and Gertrude H. Sergievsky CenterNew YorkNew YorkUSA
| | - Panos N. Papapanou
- Division of PeriodonticsSection of OralDiagnostic and Rehabilitation SciencesCollege of Dental MedicineNew YorkNew YorkUSA
| |
Collapse
|
13
|
Gomez‐Arboledas A, Fonseca MI, Kramar E, Chu S, Schartz ND, Selvan P, Wood MA, Tenner AJ. C5aR1 signaling promotes region- and age-dependent synaptic pruning in models of Alzheimer's disease. Alzheimers Dement 2024; 20:2173-2190. [PMID: 38278523 PMCID: PMC10984438 DOI: 10.1002/alz.13682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 12/08/2023] [Accepted: 12/11/2023] [Indexed: 01/28/2024]
Abstract
INTRODUCTION Synaptic loss is a hallmark of Alzheimer's disease (AD) that correlates with cognitive decline in AD patients. Complement-mediated synaptic pruning has been associated with this excessive loss of synapses in AD. Here, we investigated the effect of C5aR1 inhibition on microglial and astroglial synaptic pruning in two mouse models of AD. METHODS A combination of super-resolution and confocal and tridimensional image reconstruction was used to assess the effect of genetic ablation or pharmacological inhibition of C5aR1 on the Arctic48 and Tg2576 models of AD. RESULTS Genetic ablation or pharmacological inhibition of C5aR1 partially rescues excessive pre-synaptic pruning and synaptic loss in an age and region-dependent fashion in two mouse models of AD, which correlates with improved long-term potentiation (LTP). DISCUSSION Reduction of excessive synaptic pruning is an additional beneficial outcome of the suppression of C5a-C5aR1 signaling, further supporting its potential as an effective targeted therapy to treat AD. HIGHLIGHTS C5aR1 ablation restores long-term potentiation in the Arctic model of AD. C5aR1 ablation rescues region specific excessive pre-synaptic loss. C5aR1 antagonist, PMX205, rescues VGlut1 loss in the Tg2576 model of AD. C1q tagging is not sufficient to induce VGlut1 microglial ingestion. Astrocytes contribute to excessive pre-synaptic loss at late stages of the disease.
Collapse
Affiliation(s)
- Angela Gomez‐Arboledas
- Department of Molecular Biology and BiochemistryUniversity of CaliforniaIrvineCaliforniaUSA
| | - Maria I. Fonseca
- Department of Molecular Biology and BiochemistryUniversity of CaliforniaIrvineCaliforniaUSA
| | - Enikö Kramar
- Department of Neurobiology and BehaviorUniversity of CaliforniaIrvineCaliforniaUSA
| | - Shu‐Hui Chu
- Department of Molecular Biology and BiochemistryUniversity of CaliforniaIrvineCaliforniaUSA
| | - Nicole D. Schartz
- Department of Molecular Biology and BiochemistryUniversity of CaliforniaIrvineCaliforniaUSA
| | - Purnika Selvan
- Department of Molecular Biology and BiochemistryUniversity of CaliforniaIrvineCaliforniaUSA
| | - Marcelo A. Wood
- Department of Neurobiology and BehaviorUniversity of CaliforniaIrvineCaliforniaUSA
| | - Andrea J. Tenner
- Department of Molecular Biology and BiochemistryUniversity of CaliforniaIrvineCaliforniaUSA
- Department of Neurobiology and BehaviorUniversity of CaliforniaIrvineCaliforniaUSA
- Department of Pathology and Laboratory MedicineUniversity of CaliforniaSchool of MedicineIrvineCaliforniaUSA
| |
Collapse
|
14
|
Robinson CG, Lee J, Min PH, Przybelski SA, Josephs KA, Jones DT, Graff‐Radford J, Boeve BF, Knopman DS, Jack CR, Petersen RC, Machulda MM, Fields JA, Lowe VJ. Significance of a positive tau PET scan with a negative amyloid PET scan. Alzheimers Dement 2024; 20:1923-1932. [PMID: 38159060 PMCID: PMC10947949 DOI: 10.1002/alz.13608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 10/24/2023] [Accepted: 11/17/2023] [Indexed: 01/03/2024]
Abstract
INTRODUCTION The implications of positive tau positron emission tomography (T) with negative beta amyloid positron emission tomography (A) are not well understood. We investigated cognitive performance in participants who were T+ but A-. METHODS We evaluated 98 participants from the Mayo Clinic who were T+ and A-. Participants were matched 2:1 to A- and T- cognitively unimpaired (CU) controls. Cognitive test scores were compared between different groups. RESULTS The A-T+ group demonstrated lower performance than the A-T- group on the Mini-Mental Status Exam (MMSE) (p < 0.001), Wechsler Memory Scale-Revised Logical Memory I (p < 0.001) and Logical Memory II (p < 0.001), Auditory Verbal Learning Test (AVLT) delayed recall (p = 0.004), category fluency (animals p = 0.005; vegetables p = 0.021), Trail Making Test A and B (p < 0.001), and others. There were no significant differences in demographic features or apolipoprotein E (APOE) e4 genotype between CU A-T+ and CI A-T+. DISCUSSION A-T+ participants show an association with lower cognitive performance.
Collapse
Affiliation(s)
| | - Jeyeon Lee
- College of MedicineHanyang UniversitySeoulSouth Korea
| | - Paul H. Min
- Departments of RadiologyMayo ClinicRochesterMinnesotaUSA
| | | | | | - David T. Jones
- Departments of NeurologyMayo ClinicRochesterMinnesotaUSA
| | | | | | | | | | | | - Mary M. Machulda
- Departments of Psychiatry and PsychologyMayo ClinicRochesterMinnesotaUSA
| | - Julie A. Fields
- Departments of Psychiatry and PsychologyMayo ClinicRochesterMinnesotaUSA
| | - Val J. Lowe
- Departments of RadiologyMayo ClinicRochesterMinnesotaUSA
| |
Collapse
|
15
|
Aldecoa I, Barroeta I, Carroll SL, Fortea J, Gilmore A, Ginsberg SD, Guzman SJ, Hamlett ED, Head E, Perez SE, Potter H, Molina‐Porcel L, Raha‐Chowdhury R, Wisniewski T, Yong WH, Zaman S, Ghosh S, Mufson EJ, Granholm A. Down Syndrome Biobank Consortium: A perspective. Alzheimers Dement 2024; 20:2262-2272. [PMID: 38270275 PMCID: PMC10984425 DOI: 10.1002/alz.13692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 12/14/2023] [Accepted: 12/16/2023] [Indexed: 01/26/2024]
Abstract
Individuals with Down syndrome (DS) have a partial or complete trisomy of chromosome 21, resulting in an increased risk for early-onset Alzheimer's disease (AD)-type dementia by early midlife. Despite ongoing clinical trials to treat late-onset AD, individuals with DS are often excluded. Furthermore, timely diagnosis or management is often not available. Of the genetic causes of AD, people with DS represent the largest cohort. Currently, there is a knowledge gap regarding the underlying neurobiological mechanisms of DS-related AD (DS-AD), partly due to limited access to well-characterized brain tissue and biomaterials for research. To address this challenge, we created an international consortium of brain banks focused on collecting and disseminating brain tissue from persons with DS throughout their lifespan, named the Down Syndrome Biobank Consortium (DSBC) consisting of 11 biobanking sites located in Europe, India, and the USA. This perspective describes the DSBC harmonized protocols and tissue dissemination goals.
Collapse
Affiliation(s)
- Iban Aldecoa
- Pathology DepartmentHospital Clinic de Barcelona‐University of BarcelonaBarcelonaSpain
- Neurological Tissue Bank of the BiobankHospital Clinic de Barcelona‐FCRB/IDIBAPSBarcelonaSpain
| | - Isabel Barroeta
- Neurology DepartmentHospital de la Santa Creu i Sant Pau, NeurologyBarcelonaSpain
| | - Steven L. Carroll
- Department of Pathology & Laboratory MedicineMedical University of South CarolinaCharlestonSouth CarolinaUSA
| | - Juan Fortea
- Neurology DepartmentHospital de la Santa Creu i Sant Pau, NeurologyBarcelonaSpain
| | - Anah Gilmore
- University of Colorado Denver Anschutz Medical Campus, NeurosurgeryAuroraColoradoUSA
| | - Stephen D. Ginsberg
- Center for Dementia Research, Nathan Kline InstituteOrangeburgNew YorkUSA
- Departments of PsychiatryNeuroscience & Physiology, and the NYU Neuroscience Institute, New York University Grossman School of MedicineNew YorkNew YorkUSA
| | - Samuel J. Guzman
- Department of PathologyUniversity of Colorado Anschutz Medical CampusAuroraColoradoUSA
| | - Eric D. Hamlett
- Department of Pathology & Laboratory MedicineMedical University of South CarolinaCharlestonSouth CarolinaUSA
| | - Elizabeth Head
- Department of Pathology and Laboratory MedicineUniversity of California Irvine, UCI School of Medicine D440 Medical Sciences IIrvineCaliforniaUSA
| | - Sylvia E. Perez
- Barrow Neurological InstituteTranslational Neurosciences and NeurologyPhoenixArizonaUSA
| | - Huntington Potter
- University of Colorado Denver Anschutz Medical Campus, NeurologyAuroraColoradoUSA
| | - Laura Molina‐Porcel
- Pathology DepartmentHospital Clinic de Barcelona‐University of BarcelonaBarcelonaSpain
- Alzheimer's Disease and Other Cognitive Disorders UnitNeurology Service, Hospital Clínic, IDIBAPS, University of BarcelonaBarcelonaSpain
| | - Ruma Raha‐Chowdhury
- Department of PsychiatryCambridge Intellectual & Developmental Disabilities Research GroupUniversity of CambridgeCambridgeUK
| | - Thomas Wisniewski
- Center for Cognitive Neurology, Departments of Neurology, Pathology and PsychiatryNew York University Grossman School of MedicineNew YorkNew YorkUSA
| | - William H. Yong
- Department of Pathology and Laboratory MedicineUniversity of California Irvine, UCI School of Medicine D440 Medical Sciences IIrvineCaliforniaUSA
| | - Shahid Zaman
- Department of PsychiatryCambridge Intellectual & Developmental Disabilities Research GroupUniversity of CambridgeCambridgeUK
| | - Sujay Ghosh
- Department of ZoologyCytogenetics and Genomics Research UnitKolkataIndia
| | - Elliott J. Mufson
- Barrow Neurological InstituteTranslational Neurosciences and NeurologyPhoenixArizonaUSA
| | | |
Collapse
|
16
|
Bellier J, Cai Y, Alam SM, Wiederhold T, Aiello A, Vogelgsang JS, Berretta S, Chhatwal JP, Selkoe DJ, Liu L. Uncovering elevated tau TPP motif phosphorylation in the brain of Alzheimer's disease patients. Alzheimers Dement 2024; 20:1573-1585. [PMID: 38041855 PMCID: PMC10947957 DOI: 10.1002/alz.13557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 09/26/2023] [Accepted: 10/24/2023] [Indexed: 12/04/2023]
Abstract
INTRODUCTION A wide array of post-translational modifications of the tau protein occurs in Alzheimer's disease (AD) and they are critical to pathogenesis and biomarker development. Several promising tau markers, pT181, pT217, and pT231, rely on increased phosphorylation within a common molecular motif threonine-proline-proline (TPP). METHODS We validated new and existing antibodies against pT217, pT231, pT175, and pT181, then combined immunohistochemistry (IHC) and immunoassays (ELISA) to broadly examine the phosphorylation of the tau TPP motif in AD brains. RESULTS The tau burden, as examined by IHC and ELISA, correlates to Braak stages across all TPP sites. Moreover, we observed regional variability across four TPP motif phosphorylation sites in multiple brains of sporadic AD patients. DISCUSSION We conclude that there is an elevation of TPP tau phosphorylation in AD brains as disease advances. The regional variability of pTPP tau suggests that examining different phosphorylation sites is essential for a comprehensive assessment of tau pathology.
Collapse
Affiliation(s)
| | - Yuqi Cai
- Brigham and Women's HospitalHarvard Medical SchoolBostonMassachusettsUSA
| | - Sarah M. Alam
- Brigham and Women's HospitalHarvard Medical SchoolBostonMassachusettsUSA
| | | | - Arica Aiello
- Cell Signaling Technology, Inc.DanversMassachusettsUSA
| | | | - Sabina Berretta
- McLean HospitalHarvard Medical SchoolBelmontMassachusettsUSA
| | | | - Dennis J. Selkoe
- Brigham and Women's HospitalHarvard Medical SchoolBostonMassachusettsUSA
| | - Lei Liu
- Brigham and Women's HospitalHarvard Medical SchoolBostonMassachusettsUSA
| |
Collapse
|
17
|
Boorman J, Zeng X, Lin J, van den Akker F. Structural insights into peptidoglycan glycosidase EtgA binding to the inner rod protein EscI of the type III secretion system via a designed EscI-EtgA fusion protein. Protein Sci 2024; 33:e4930. [PMID: 38380768 PMCID: PMC10880428 DOI: 10.1002/pro.4930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 01/23/2024] [Accepted: 02/01/2024] [Indexed: 02/22/2024]
Abstract
Bacteria express lytic enzymes such as glycosidases, which have potentially self-destructive peptidoglycan (PG)-degrading activity and, therefore, require careful regulation in bacteria. The PG glycosidase EtgA is regulated by localization to the assembling type III secretion system (T3SS), generating a hole in the PG layer for the T3SS to reach the outer membrane. The EtgA localization was found to be mediated via EtgA interacting with the T3SS inner rod protein EscI. To gain structural insights into the EtgA recognition of EscI, we determined the 2.01 Å resolution structure of an EscI (51-87)-linker-EtgA fusion protein designed based on AlphaFold2 predictions. The structure revealed EscI residues 72-87 forming an α-helix interacting with the backside of EtgA, distant from the active site. EscI residues 56-71 also were found to interact with EtgA, with these residues stretching across the EtgA surface. The ability of the EscI to interact with EtgA was also probed using an EscI peptide. The EscI peptide comprising residues 66-87, slightly larger than the observed EscI α-helix, was shown to bind to EtgA using microscale thermophoresis and thermal shift differential scanning fluorimetry. The EscI peptide also had a two-fold activity-enhancing effect on EtgA, whereas the EscI-EtgA fusion protein enhanced activity over four-fold compared to EtgA. Our studies suggest that EtgA regulation by EscI could be trifold involving protein localization, protein activation, and protein stabilization components. Analysis of the sequence conservation of the EscI EtgA interface residues suggested a possible conservation of such regulation for related proteins from different bacteria.
Collapse
Affiliation(s)
- J. Boorman
- Department of BiochemistryCase Western Reserve UniversityClevelandOhioUSA
| | - X. Zeng
- Department of Animal ScienceUniversity of TennesseeKnoxvilleTennesseeUSA
| | - J. Lin
- Department of Animal ScienceUniversity of TennesseeKnoxvilleTennesseeUSA
| | - F. van den Akker
- Department of BiochemistryCase Western Reserve UniversityClevelandOhioUSA
| |
Collapse
|
18
|
Uemasu K, Nyunoya T. A case report of Birt-Hogg-Dubé syndrome associated with severe airway obstruction in a 62-year-old female smoker. Respirol Case Rep 2024; 12:e01327. [PMID: 38523622 PMCID: PMC10960519 DOI: 10.1002/rcr2.1327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 03/12/2024] [Indexed: 03/26/2024] Open
Abstract
Birt-Hogg-Dubé syndrome (BHD) typically does not manifest airway obstruction despite the presence of multiple lung cysts. However, the long-term effects of cigarette smoking on lung function among individuals with BHD are unknown. We report a case of a smoking individual diagnosed with BHD syndrome complicated by spontaneous pneumothorax and severe airway obstruction. The patient presented with chronic dyspnea and productive cough. Further work-up revealed severe obstructive airflow limitation, and multiple lung cysts in both lungs, accompanied centrilobular emphysematous changes. Genetic testing confirmed a heterozygous deletion of exons 6-8 in the folliculin gene, confirming the diagnosis of BHD.
Collapse
Affiliation(s)
- Kiyoshi Uemasu
- Department of MedicineUniversity of Pittsburgh School of MedicinePittsburghPennsylvaniaUSA
| | - Toru Nyunoya
- Department of MedicineUniversity of Pittsburgh School of MedicinePittsburghPennsylvaniaUSA
- Medical Specialty Service LineVeterans Affairs Pittsburgh Healthcare SystemPittsburghPennsylvaniaUSA
| |
Collapse
|
19
|
Agarwal K, Backler W, Bayram E, Bloom L, Boeve BF, Cha J, Denslow M, Ferman TJ, Galasko D, Galvin JE, Gomperts SN, Irizarry MC, Kantarci K, Kaushik H, Kietlinski M, Koenig A, Leverenz JB, McKeith I, McLean PJ, Montine TJ, Moose SO, O'Brien JT, Panier V, Ramanathan S, Ringel MS, Scholz SW, Small J, Sperling RA, Taylor A, Taylor J, Ward RA, Witten L, Hyman BT. Lewy body dementia: Overcoming barriers and identifying solutions. Alzheimers Dement 2024; 20:2298-2308. [PMID: 38265159 PMCID: PMC10942666 DOI: 10.1002/alz.13674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 11/30/2023] [Accepted: 12/04/2023] [Indexed: 01/25/2024]
Abstract
Despite its high prevalence among dementias, Lewy body dementia (LBD) remains poorly understood with a limited, albeit growing, evidence base. The public-health burden that LBD imposes is worsened by overlapping pathologies, which contribute to misdiagnosis, and lack of treatments. For this report, we gathered and analyzed public-domain information on advocacy, funding, research outputs, and the therapeutic pipeline to identify gaps in each of these key elements. To further understand the current gaps, we also conducted interviews with leading experts in regulatory/governmental agencies, LBD advocacy, academic research, and biopharmaceutical research, as well as with funding sources. We identified wide gaps across the entire landscape, the most critical being in research. Many of the experts participated in a workshop to discuss the prioritization of research areas with a view to accelerating therapeutic development and improving patient care. This white paper outlines the opportunities for bridging the major LBD gaps and creates the framework for collaboration in that endeavor. HIGHLIGHTS: A group representing academia, government, industry, and consulting expertise was convened to discuss current progress in Dementia with Lewy Body care and research. Consideration of expert opinion,natural language processing of the literature as well as publicly available data bases, and Delphi inspired discussion led to a proposed consensus document of priorities for the field.
Collapse
Affiliation(s)
| | | | - Ece Bayram
- Parkinson and Other Movement Disorders CenterDepartment of NeurosciencesUniversity of California San DiegoLa JollaCaliforniaUSA
| | | | | | | | - Maria Denslow
- Alzheimer Disease and Brain HealthEisai, Inc.NutleyNew JerseyUSA
| | - Tanis J. Ferman
- Department of Psychiatry and PsychologyMayo ClinicJacksonvilleFloridaUSA
| | - Douglas Galasko
- Department of Neurosciencesand Shiley‐Marcos Alzheimer's Disease Research CenterUC San DiegoLa JollaCaliforniaUSA
| | - James E. Galvin
- Department of NeurologyComprehensive Center for Brain HealthUniversity of Miami Miller School of MedicineBoca RatonFloridaUSA
| | | | | | - Kejal Kantarci
- Department of RadiologyDivision of NeuroradiologyMayo Clinic RochesterRochesterMinnesotaUSA
| | | | | | | | - James B. Leverenz
- Cleveland Lou Ruvo Center for Brain HealthNeurological InstituteCleveland ClinicClevelandOhioUSA
| | - Ian McKeith
- Translational and Clinical Research InstituteNewcastle UniversityNewcastle upon TyneUK
| | | | | | | | - John T. O'Brien
- Department of PsychiatryUniversity of Cambridge School of Clinical MedicineCambridgeUK
| | | | - Sharad Ramanathan
- Departments of Molecular and Cell BiologyStem Cell and Regenerative Biology and Applied PhysicsHarvard UniversityCambridgeMassachusettsUSA
| | | | - Sonja W. Scholz
- National Institute of Neurological Disorders and StrokeNational Institutes of HealthBethesdaMarylandUSA
- Department of NeurologyJohns Hopkins University Medical CenterBaltimoreMarylandUSA
| | | | - Reisa A. Sperling
- Department of NeurologyMassachusetts General HospitalBostonMassachusettsUSA
- Department of NeurologyBrigham and Women's Hospital and Harvard Medical SchoolBostonMassachusettsUSA
| | | | | | - Rebecca A. Ward
- Department of NeurologyMassachusetts General HospitalBostonMassachusettsUSA
| | - Lisa Witten
- The Boston Consulting GroupBostonMassachusettsUSA
| | - Bradley T. Hyman
- Department of NeurologyMassachusetts General HospitalBostonMassachusettsUSA
| |
Collapse
|
20
|
Kong X, Liu C. How do small quantities of cartilage sodium channels play a significant role in osteoarthritis? Clin Transl Med 2024; 14:e1634. [PMID: 38530147 PMCID: PMC10964914 DOI: 10.1002/ctm2.1634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 03/04/2024] [Accepted: 03/05/2024] [Indexed: 03/27/2024] Open
Affiliation(s)
- Xiaohong Kong
- Department of Orthopaedics and RehabilitationYale University School of MedicineNew HavenConnecticutUSA
| | - Chuan‐Ju Liu
- Department of Orthopaedics and RehabilitationYale University School of MedicineNew HavenConnecticutUSA
| |
Collapse
|
21
|
Doiron JE, Li Z, Yu X, LaPenna KB, Quiriarte H, Allerton TD, Koul K, Malek A, Shah SJ, Sharp TE, Goodchild TT, Kapusta DR, Lefer DJ. Early Renal Denervation Attenuates Cardiac Dysfunction in Heart Failure With Preserved Ejection Fraction. J Am Heart Assoc 2024; 13:e032646. [PMID: 38353216 PMCID: PMC11010115 DOI: 10.1161/jaha.123.032646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Accepted: 12/08/2023] [Indexed: 02/21/2024]
Abstract
BACKGROUND The renal sympathetic nervous system modulates systemic blood pressure, cardiac performance, and renal function. Pathological increases in renal sympathetic nerve activity contribute to the pathogenesis of heart failure with preserved ejection fraction (HFpEF). We investigated the effects of renal sympathetic denervation performed at early or late stages of HFpEF progression. METHODS AND RESULTS Male ZSF1 obese rats were subjected to radiofrequency renal denervation (RF-RDN) or sham procedure at either 8 weeks or 20 weeks of age and assessed for cardiovascular function, exercise capacity, and cardiorenal fibrosis. Renal norepinephrine and renal nerve tyrosine hydroxylase staining were performed to quantify denervation following RF-RDN. In addition, renal injury, oxidative stress, inflammation, and profibrotic biomarkers were evaluated to determine pathways associated with RDN. RF-RDN significantly reduced renal norepinephrine and tyrosine hydroxylase content in both study cohorts. RF-RDN therapy performed at 8 weeks of age attenuated cardiac dysfunction, reduced cardiorenal fibrosis, and improved endothelial-dependent vascular reactivity. These improvements were associated with reductions in renal injury markers, expression of renal NLR family pyrin domain containing 3/interleukin 1β, and expression of profibrotic mediators. RF-RDN failed to exert beneficial effects when administered in the 20-week-old HFpEF cohort. CONCLUSIONS Our data demonstrate that early RF-RDN therapy protects against HFpEF disease progression in part due to the attenuation of renal fibrosis and inflammation. In contrast, the renoprotective and left ventricular functional improvements were lost when RF-RDN was performed in later HFpEF progression. These results suggest that RDN may be a viable treatment option for HFpEF during the early stages of this systemic inflammatory disease.
Collapse
Affiliation(s)
- Jake E. Doiron
- Department of Pharmacology and Experimental TherapeuticsLouisiana State University Health Sciences CenterNew OrleansLAUSA
| | - Zhen Li
- Department of Cardiac SurgerySmidt Heart Institute, Cedars‐Sinai Medical CenterLos AngelesCAUSA
| | - Xiaoman Yu
- Department of Cardiac SurgerySmidt Heart Institute, Cedars‐Sinai Medical CenterLos AngelesCAUSA
| | - Kyle B. LaPenna
- Department of Pharmacology and Experimental TherapeuticsLouisiana State University Health Sciences CenterNew OrleansLAUSA
| | - Heather Quiriarte
- Department of Vascular MetabolismPennington Biomedical Research CenterBaton RougeLAUSA
| | - Timothy D. Allerton
- Department of Vascular MetabolismPennington Biomedical Research CenterBaton RougeLAUSA
| | - Kashyap Koul
- School of MedicineLouisiana State University Health Sciences Center New OrleansNew OrleansLAUSA
| | - Andrew Malek
- School of MedicineLouisiana State University Health Sciences Center New OrleansNew OrleansLAUSA
| | - Sanjiv J. Shah
- Division of Cardiology, Department of Medicine and Bluhm Cardiovascular InstituteNorthwestern University Feinberg School of MedicineChicagoILUSA
| | - Thomas E. Sharp
- Department of Molecular Pharmacology and Physiology, Morsani College of MedicineUniversity of South FloridaTampaFLUSA
- USF Health Heart InstituteTampaFLUSA
| | - Traci T. Goodchild
- Department of Cardiac SurgerySmidt Heart Institute, Cedars‐Sinai Medical CenterLos AngelesCAUSA
| | - Daniel R. Kapusta
- Department of Pharmacology and Experimental TherapeuticsLouisiana State University Health Sciences CenterNew OrleansLAUSA
| | - David J. Lefer
- Department of Cardiac SurgerySmidt Heart Institute, Cedars‐Sinai Medical CenterLos AngelesCAUSA
| |
Collapse
|
22
|
Xu J, Roe J, Lee E, Tonelli C, Ji KY, Younis OW, Somervile TD, Yao M, Milazzo JP, Tiriac H, Kolarzyk AM, Lee E, Grem JL, Lazenby AJ, Grunkemeyer JA, Hollingsworth MA, Grandgenett PM, Borowsky AD, Park Y, Vakoc CR, Tuveson DA, Hwang C. Engrailed-1 Promotes Pancreatic Cancer Metastasis. Adv Sci (Weinh) 2024; 11:e2308537. [PMID: 38110836 PMCID: PMC10853725 DOI: 10.1002/advs.202308537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Indexed: 12/20/2023]
Abstract
Engrailed-1 (EN1) is a critical homeodomain transcription factor (TF) required for neuronal survival, and EN1 expression has been shown to promote aggressive forms of triple negative breast cancer. Here, it is reported that EN1 is aberrantly expressed in a subset of pancreatic ductal adenocarcinoma (PDA) patients with poor outcomes. EN1 predominantly repressed its target genes through direct binding to gene enhancers and promoters, implicating roles in the activation of MAPK pathways and the acquisition of mesenchymal cell properties. Gain- and loss-of-function experiments demonstrated that EN1 promoted PDA transformation and metastasis in vitro and in vivo. The findings nominate the targeting of EN1 and downstream pathways in aggressive PDA.
Collapse
Affiliation(s)
- Jihao Xu
- Department of Microbiology and Molecular GeneticsUniversity of California DavisDavisCA95616USA
- Comprehensive Cancer CenterUniversity of California DavisSacramentoCA95817USA
| | - Jae‐Seok Roe
- Department of BiochemistryYonsei UniversitySeoul03722South Korea
- Cold Spring Harbor LaboratoryCold Spring HarborNY11724USA
| | - EunJung Lee
- Department of Microbiology and Molecular GeneticsUniversity of California DavisDavisCA95616USA
- Cold Spring Harbor LaboratoryCold Spring HarborNY11724USA
- Lustgarten Foundation Pancreatic Cancer Research LaboratoryCold Spring HarborNY11724USA
| | - Claudia Tonelli
- Cold Spring Harbor LaboratoryCold Spring HarborNY11724USA
- Lustgarten Foundation Pancreatic Cancer Research LaboratoryCold Spring HarborNY11724USA
| | - Keely Y. Ji
- Department of Microbiology and Molecular GeneticsUniversity of California DavisDavisCA95616USA
| | - Omar W. Younis
- Department of Microbiology and Molecular GeneticsUniversity of California DavisDavisCA95616USA
| | | | - Melissa Yao
- Cold Spring Harbor LaboratoryCold Spring HarborNY11724USA
- Lustgarten Foundation Pancreatic Cancer Research LaboratoryCold Spring HarborNY11724USA
| | | | - Herve Tiriac
- Cold Spring Harbor LaboratoryCold Spring HarborNY11724USA
- Lustgarten Foundation Pancreatic Cancer Research LaboratoryCold Spring HarborNY11724USA
| | - Anna M. Kolarzyk
- Nancy E. and Peter C. Meinig School of Biomedical EngineeringCornell UniversityIthacaNY14853USA
| | - Esak Lee
- Nancy E. and Peter C. Meinig School of Biomedical EngineeringCornell UniversityIthacaNY14853USA
| | - Jean L. Grem
- Department of MedicineUniversity of Nebraska Medical CenterOmahaNE68198USA
| | - Audrey J. Lazenby
- Department of MedicineUniversity of Nebraska Medical CenterOmahaNE68198USA
| | | | | | | | - Alexander D. Borowsky
- Department of PathologySchool of MedicineUniversity of California DavisSacramentoCA95817USA
| | - Youngkyu Park
- Cold Spring Harbor LaboratoryCold Spring HarborNY11724USA
- Lustgarten Foundation Pancreatic Cancer Research LaboratoryCold Spring HarborNY11724USA
| | | | - David A. Tuveson
- Cold Spring Harbor LaboratoryCold Spring HarborNY11724USA
- Lustgarten Foundation Pancreatic Cancer Research LaboratoryCold Spring HarborNY11724USA
| | - Chang‐Il Hwang
- Department of Microbiology and Molecular GeneticsUniversity of California DavisDavisCA95616USA
- Comprehensive Cancer CenterUniversity of California DavisSacramentoCA95817USA
| |
Collapse
|
23
|
Eissman JM, Archer DB, Mukherjee S, Lee ML, Choi S, Scollard P, Trittschuh EH, Mez JB, Bush WS, Kunkle BW, Naj AC, Gifford KA, Cuccaro ML, Cruchaga C, Pericak‐Vance MA, Farrer LA, Wang L, Schellenberg GD, Mayeux RP, Haines JL, Jefferson AL, Kukull WA, Keene CD, Saykin AJ, Thompson PM, Martin ER, Bennett DA, Barnes LL, Schneider JA, Crane PK, Hohman TJ, Dumitrescu L. Sex-specific genetic architecture of late-life memory performance. Alzheimers Dement 2024; 20:1250-1267. [PMID: 37984853 PMCID: PMC10917043 DOI: 10.1002/alz.13507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 08/08/2023] [Accepted: 09/07/2023] [Indexed: 11/22/2023]
Abstract
BACKGROUND Women demonstrate a memory advantage when cognitively healthy yet lose this advantage to men in Alzheimer's disease. However, the genetic underpinnings of this sex difference in memory performance remain unclear. METHODS We conducted the largest sex-aware genetic study on late-life memory to date (Nmales = 11,942; Nfemales = 15,641). Leveraging harmonized memory composite scores from four cohorts of cognitive aging and AD, we performed sex-stratified and sex-interaction genome-wide association studies in 24,216 non-Hispanic White and 3367 non-Hispanic Black participants. RESULTS We identified three sex-specific loci (rs67099044-CBLN2, rs719070-SCHIP1/IQCJ-SCHIP), including an X-chromosome locus (rs5935633-EGL6/TCEANC/OFD1), that associated with memory. Additionally, we identified heparan sulfate signaling as a sex-specific pathway and found sex-specific genetic correlations between memory and cardiovascular, immune, and education traits. DISCUSSION This study showed memory is highly and comparably heritable across sexes, as well as highlighted novel sex-specific genes, pathways, and genetic correlations that related to late-life memory. HIGHLIGHTS Demonstrated the heritable component of late-life memory is similar across sexes. Identified two genetic loci with a sex-interaction with baseline memory. Identified an X-chromosome locus associated with memory decline in females. Highlighted sex-specific candidate genes and pathways associated with memory. Revealed sex-specific shared genetic architecture between memory and complex traits.
Collapse
|
24
|
Abdolahi F, Yu V, Varma R, Zhou X, Wang RK, D'Orazio LM, Zhao C, Jann K, Wang DJ, Kashani AH, Jiang X. Retinal perfusion is linked to cognition and brain MRI biomarkers in Black Americans. Alzheimers Dement 2024; 20:858-868. [PMID: 37800578 PMCID: PMC10917050 DOI: 10.1002/alz.13469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 08/14/2023] [Accepted: 08/17/2023] [Indexed: 10/07/2023]
Abstract
INTRODUCTION We investigated whether retinal capillary perfusion is a biomarker of cerebral small vessel disease and impaired cognition among Black Americans, an understudied group at higher risk for dementia. METHODS We enrolled 96 Black Americans without known cognitive impairment. Four retinal perfusion measures were derived using optical coherence tomography angiography. Neurocognitive assessment and brain magnetic resonance imaging (MRI) were performed. Multiple linear regression analyses were performed. RESULTS Lower retinal capillary perfusion was correlated with worse Oral Symbol Digit Test (P < = 0.005) and Fluid Cognition Composite scores (P < = 0.02), but not with the Crystallized Cognition Composite score (P > = 0.41). Lower retinal perfusion was also correlated with higher free water and peak width of skeletonized mean diffusivity, and lower fractional anisotropy (all P < 0.05) on MRI (N = 35). DISCUSSION Lower retinal capillary perfusion is associated with worse information processing, fluid cognition, and MRI biomarkers of cerebral small vessel disease, but is not related to crystallized cognition.
Collapse
Affiliation(s)
- Farzan Abdolahi
- Department of OphthalmologyUniversity of Southern California Keck School of MedicineLos AngelesCaliforniaUSA
| | - Victoria Yu
- Department of OphthalmologyUniversity of Southern California Keck School of MedicineLos AngelesCaliforniaUSA
| | - Rohit Varma
- Southern California Eye InstituteCHA Hollywood Presbyterian Medical CenterLos AngelesCaliforniaUSA
| | - Xiao Zhou
- Department of BioengineeringUniversity of WashingtonSeattleWashingtonUSA
| | - Ruikang K. Wang
- Department of BioengineeringUniversity of WashingtonSeattleWashingtonUSA
- Department of OphthalmologyUniversity of WashingtonSeattleWashingtonUSA
| | - Lina M. D'Orazio
- Department of NeurologyUniversity of Southern California Keck School of MedicineLos AngelesCaliforniaUSA
| | - Chenyang Zhao
- Laboratory of FMRI TechnologyStevens Neuroimaging and Informatics InstituteUniversity of Southern California Keck School of MedicineLos AngelesCaliforniaUSA
| | - Kay Jann
- Laboratory of FMRI TechnologyStevens Neuroimaging and Informatics InstituteUniversity of Southern California Keck School of MedicineLos AngelesCaliforniaUSA
| | - Danny J. Wang
- Department of NeurologyUniversity of Southern California Keck School of MedicineLos AngelesCaliforniaUSA
- Laboratory of FMRI TechnologyStevens Neuroimaging and Informatics InstituteUniversity of Southern California Keck School of MedicineLos AngelesCaliforniaUSA
| | - Amir H. Kashani
- Department of OphthalmologyWilmer Eye InstituteJohns Hopkins University School of MedicineBaltimoreMarylandUSA
| | - Xuejuan Jiang
- Department of OphthalmologyUniversity of Southern California Keck School of MedicineLos AngelesCaliforniaUSA
| |
Collapse
|
25
|
Shahtout JL, Eshima H, Ferrara PJ, Maschek JA, Cox JE, Drummond MJ, Funai K. Inhibition of the skeletal muscle Lands cycle ameliorates weakness induced by physical inactivity. J Cachexia Sarcopenia Muscle 2024; 15:319-330. [PMID: 38123161 PMCID: PMC10834354 DOI: 10.1002/jcsm.13406] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 10/12/2023] [Accepted: 11/15/2023] [Indexed: 12/23/2023] Open
Abstract
BACKGROUND Lipid hydroperoxides (LOOH) have been implicated in skeletal muscle atrophy with age and disuse. Lysophosphatidylcholine acyltransferase 3 (LPCAT3), an enzyme of the Lands cycle, conjugates a polyunsaturated fatty acyl chain to a lysophospholipid to form a polyunsaturated fatty acid containing phospholipid (PUFA-PL) molecule, providing substrates for LOOH propagation. Previous studies suggest that inhibition of the Lands cycle is an effective strategy to suppress LOOH. Mice with skeletal muscle-specific tamoxifen-inducible knockout of LPCAT3 (LPCAT3-MKO) were utilized to determine if muscle-specific attenuation of LOOH may alleviate muscle atrophy and weakness with disuse. METHODS LPCAT3-MKO and control mice underwent 7 days of sham or hindlimb unloading (HU model) to study muscle mass and force-generating capacity. LOOH was assessed by quantifying 4-hydroxynonenal (4-HNE)-conjugated peptides. Quantitative PCR and lipid mass spectrometry were used to validate LPCAT3 deletion. RESULTS Seven days of HU was sufficient to induce muscle atrophy and weakness concomitant to a ~2-fold increase in 4-HNE (P = 0.0069). Deletion of LPCAT3 reversed HU-induced increase in muscle 4-HNE (P = 0.0256). No difference was found in body mass, body composition, or caloric intake between genotypes. The soleus (SOL) and plantaris (PLANT) muscles of the LPCAT3-MKO mice experienced ~15% and ~40% less atrophy than controls, respectively. (P = 0.0011 and P = 0.0265). Type I and IIa SOL myofibers experienced a ~40% decrease in cross sectional area (CSA), which was attenuated to only 15% in the LPCAT3-MKO mice (P = 0.0170 and P = 0.0411, respectively). Strikingly, SOL muscles were fully protected and extensor digitorum longus (EDL) muscles experienced a ~35% protection from HU-induced reduction in force-generating capacity in the LPCAT3-MKO mice compared with controls (P < 0.0001 for both muscles). CONCLUSIONS Our findings demonstrate that attenuation of skeletal muscle lipid hydroperoxides is sufficient to restore its function, in particular a protection from reduction in muscle specific force. Our findings suggest muscle lipid peroxidation contributes to atrophy and weakness induced by disuse in mice.
Collapse
Affiliation(s)
- Justin L. Shahtout
- Diabetes and Metabolism Research CenterUniversity of UtahSalt Lake CityUtahUSA
- Department of Physical Therapy and Athletic TrainingUniversity of UtahSalt Lake CityUtahUSA
| | - Hiroaki Eshima
- Diabetes and Metabolism Research CenterUniversity of UtahSalt Lake CityUtahUSA
- Molecular Medicine ProgramUniversity of UtahSalt Lake CityUtahUSA
- Nagasaki International UniversitySaseboJapan
| | - Patrick J. Ferrara
- Diabetes and Metabolism Research CenterUniversity of UtahSalt Lake CityUtahUSA
- Molecular Medicine ProgramUniversity of UtahSalt Lake CityUtahUSA
| | - J. Alan Maschek
- Diabetes and Metabolism Research CenterUniversity of UtahSalt Lake CityUtahUSA
- Metabolomics, Mass Spectrometry, and Proteomics CoreUniversity of UtahSalt Lake CityUtahUSA
| | - James E. Cox
- Diabetes and Metabolism Research CenterUniversity of UtahSalt Lake CityUtahUSA
- Metabolomics, Mass Spectrometry, and Proteomics CoreUniversity of UtahSalt Lake CityUtahUSA
- Department of BiochemistryUniversity of UtahSalt Lake CityUtahUSA
| | - Micah J. Drummond
- Diabetes and Metabolism Research CenterUniversity of UtahSalt Lake CityUtahUSA
- Department of Physical Therapy and Athletic TrainingUniversity of UtahSalt Lake CityUtahUSA
- Molecular Medicine ProgramUniversity of UtahSalt Lake CityUtahUSA
- Department of Nutrition and Integrative PhysiologyUniversity of UtahSalt Lake CityUtahUSA
| | - Katsuhiko Funai
- Diabetes and Metabolism Research CenterUniversity of UtahSalt Lake CityUtahUSA
- Department of Physical Therapy and Athletic TrainingUniversity of UtahSalt Lake CityUtahUSA
- Molecular Medicine ProgramUniversity of UtahSalt Lake CityUtahUSA
- Department of BiochemistryUniversity of UtahSalt Lake CityUtahUSA
- Department of Nutrition and Integrative PhysiologyUniversity of UtahSalt Lake CityUtahUSA
| |
Collapse
|
26
|
Gonzalez‐Ortiz F, Ferreira PCL, González‐Escalante A, Montoliu‐Gaya L, Ortiz‐Romero P, Kac PR, Turton M, Kvartsberg H, Ashton NJ, Zetterberg H, Harrison P, Bellaver B, Povala G, Villemagne VL, Pascoal TA, Ganguli M, Cohen AD, Minguillon C, Contador J, Suárez‐Calvet M, Karikari TK, Blennow K. A novel ultrasensitive assay for plasma p-tau217: Performance in individuals with subjective cognitive decline and early Alzheimer's disease. Alzheimers Dement 2024; 20:1239-1249. [PMID: 37975513 PMCID: PMC10916963 DOI: 10.1002/alz.13525] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/06/2023] [Accepted: 10/06/2023] [Indexed: 11/19/2023]
Abstract
INTRODUCTION Detection of Alzheimer's disease (AD) pathophysiology among individuals with mild cognitive changes and those experiencing subjective cognitive decline (SCD) remains challenging. Plasma phosphorylated tau 217 (p-tau217) is one of the most promising of the emerging biomarkers for AD. However, accessible methods are limited. METHODS We employed a novel p-tau217 immunoassay (University of Gothenburg [UGOT] p-tau217) in four independent cohorts (n = 308) including a cerebrospinal fluid (CSF) biomarker-classified cohort (Discovery), two cohorts consisting mostly of cognitively unimpaired (CU) and mild cognitively impaired (MCI) participants (MYHAT and Pittsburgh), and a population-based cohort of individuals with SCD (Barcelonaβeta Brain Research Center's Alzheimer's At-Risk Cohort [β-AARC]). RESULTS UGOT p-tau217 showed high accuracy (area under the curve [AUC] = 0.80-0.91) identifying amyloid beta (Aβ) pathology, determined either by Aβ positron emission tomography or CSF Aβ42/40 ratio. In individuals experiencing SCD, UGOT p-tau217 showed high accuracy identifying those with a positive CSF Aβ42/40 ratio (AUC = 0.91). DISCUSSION UGOT p-tau217 can be an easily accessible and efficient way to screen and monitor patients with suspected AD pathophysiology, even in the early stages of the continuum.
Collapse
|
27
|
Choi D, Gonzalez‐Suarez AM, Dumbrava MG, Medlyn M, de Hoyos‐Vega JM, Cichocki F, Miller JS, Ding L, Zhu M, Stybayeva G, Gaspar‐Maia A, Billadeau DD, Ma WW, Revzin A. Microfluidic Organoid Cultures Derived from Pancreatic Cancer Biopsies for Personalized Testing of Chemotherapy and Immunotherapy. Adv Sci (Weinh) 2024; 11:e2303088. [PMID: 38018486 PMCID: PMC10837378 DOI: 10.1002/advs.202303088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Revised: 10/17/2023] [Indexed: 11/30/2023]
Abstract
Patient-derived cancer organoids (PDOs) hold considerable promise for personalizing therapy selection and improving patient outcomes. However, it is challenging to generate PDOs in sufficient numbers to test therapies in standard culture platforms. This challenge is particularly acute for pancreatic ductal adenocarcinoma (PDAC) where most patients are diagnosed at an advanced stage with non-resectable tumors and where patient tissue is in the form of needle biopsies. Here the development and characterization of microfluidic devices for testing therapies using a limited amount of tissue or PDOs available from PDAC biopsies is described. It is demonstrated that microfluidic PDOs are phenotypically and genotypically similar to the gold-standard Matrigel organoids with the advantages of 1) spheroid uniformity, 2) minimal cell number requirement, and 3) not relying on Matrigel. The utility of microfluidic PDOs is proven by testing PDO responses to several chemotherapies, including an inhibitor of glycogen synthase kinase (GSKI). In addition, microfluidic organoid cultures are used to test effectiveness of immunotherapy comprised of NK cells in combination with a novel biologic. In summary, our microfluidic device offers considerable benefits for personalizing oncology based on cancer biopsies and may, in the future, be developed into a companion diagnostic for chemotherapy or immunotherapy treatments.
Collapse
Affiliation(s)
- Daheui Choi
- Department of Physiology and Biomedical EngineeringMayo ClinicRochesterMN55905USA
| | | | - Mihai G. Dumbrava
- Division of Experimental PathologyMayo ClinicRochesterMN55905USA
- Center for Individualized MedicineEpigenomics programMayo ClinicRochesterMN55905USA
| | - Michael Medlyn
- Division of Oncology ResearchCollege of MedicineMayo ClinicRochesterMN55905USA
| | | | - Frank Cichocki
- Department of MedicineUniversity of MinnesotaMinneapolisMN55455USA
| | | | - Li Ding
- Division of Oncology ResearchCollege of MedicineMayo ClinicRochesterMN55905USA
| | - Mojun Zhu
- Division of Medical OncologyMayo ClinicRochesterMN55905USA
| | - Gulnaz Stybayeva
- Department of Physiology and Biomedical EngineeringMayo ClinicRochesterMN55905USA
| | - Alexandre Gaspar‐Maia
- Division of Experimental PathologyMayo ClinicRochesterMN55905USA
- Center for Individualized MedicineEpigenomics programMayo ClinicRochesterMN55905USA
| | - Daniel D. Billadeau
- Division of Oncology ResearchCollege of MedicineMayo ClinicRochesterMN55905USA
| | - Wen Wee Ma
- Division of Medical OncologyMayo ClinicRochesterMN55905USA
| | - Alexander Revzin
- Department of Physiology and Biomedical EngineeringMayo ClinicRochesterMN55905USA
| |
Collapse
|
28
|
Li Q, Li J. NGF contributes to activities of acid-sensing ion channels in dorsal root ganglion neurons of male rats with experimental peripheral artery disease. Physiol Rep 2024; 12:e15933. [PMID: 38312021 PMCID: PMC10839628 DOI: 10.14814/phy2.15933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 01/15/2024] [Accepted: 01/15/2024] [Indexed: 02/06/2024] Open
Abstract
A feature of peripheral artery diseases (PAD) includes limb ischemia/reperfusion (I/R) and ischemia. Both I/R and ischemia amplify muscle afferent nerve-activated reflex sympathetic nervous and blood pressure responses (termed as exercise pressor reflex). Nevertheless, the underlying mechanisms responsible for the exaggerated autonomic responses in PAD are undetermined. Previous studies suggest that acid-sensing ion channels (ASICs) in muscle dorsal root ganglion (DRG) play a leading role in regulating the exercise pressor reflex in PAD. Thus, we determined if signaling pathways of nerve growth factor (NGF) contribute to the activities of ASICs in muscle DRG neurons of PAD. In particular, we examined ASIC1a and ASIC3 currents in isolectin B4 -negative muscle DRG neurons, a distinct subpopulation depending on NGF for survival. Hindlimb I/R and ischemia were obtained in male rats. In results, femoral artery occlusion increased the levels of NGF and NGF-stimulated TrkA receptor in DRGs, whereas they led to upregulation of ASIC3 but not ASIC1a. In addition, application of NGF onto DRG neurons increased the density of ASIC3 currents and the effect of NGF was significantly attenuated by TrkA antagonist GW441756. Moreover, the enhancing effect of NGF on the density of ASIC3-like currents was decreased by the respective inhibition of intracellular signaling pathways, namely JNK and NF-κB, by antagonists SP600125 and PDTC. Our results suggest contribution of NGF to the activities of ASIC3 currents via JNK and NF-κB signaling pathways in association with the exercise pressor reflex in experimental PAD.
Collapse
Affiliation(s)
- Qin Li
- Heart and Vascular InstituteThe Pennsylvania State University College of MedicineHersheyPennsylvaniaUSA
| | - Jianhua Li
- Heart and Vascular InstituteThe Pennsylvania State University College of MedicineHersheyPennsylvaniaUSA
| |
Collapse
|
29
|
Archer DB, Eissman JM, Mukherjee S, Lee ML, Choi S, Scollard P, Trittschuh EH, Mez JB, Bush WS, Kunkle BW, Naj AC, Gifford KA, Cuccaro ML, Pericak‐Vance MA, Farrer LA, Wang L, Schellenberg GD, Mayeux RP, Haines JL, Jefferson AL, Kukull WA, Keene CD, Saykin AJ, Thompson PM, Martin ER, Bennett DA, Barnes LL, Schneider JA, Crane PK, Dumitrescu L, Hohman TJ. Longitudinal change in memory performance as a strong endophenotype for Alzheimer's disease. Alzheimers Dement 2024; 20:1268-1283. [PMID: 37985223 PMCID: PMC10896586 DOI: 10.1002/alz.13508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 08/28/2023] [Accepted: 08/29/2023] [Indexed: 11/22/2023]
Abstract
INTRODUCTION Although large-scale genome-wide association studies (GWAS) have been conducted on AD, few have been conducted on continuous measures of memory performance and memory decline. METHODS We conducted a cross-ancestry GWAS on memory performance (in 27,633 participants) and memory decline (in 22,365 participants; 129,201 observations) by leveraging harmonized cognitive data from four aging cohorts. RESULTS We found high heritability for two ancestry backgrounds. Further, we found a novel ancestry locus for memory decline on chromosome 4 (rs6848524) and three loci in the non-Hispanic Black ancestry group for memory performance on chromosomes 2 (rs111471504), 7 (rs4142249), and 15 (rs74381744). In our gene-level analysis, we found novel genes for memory decline on chromosomes 1 (SLC25A44), 11 (BSX), and 15 (DPP8). Memory performance and memory decline shared genetic architecture with AD-related traits, neuropsychiatric traits, and autoimmune traits. DISCUSSION We discovered several novel loci, genes, and genetic correlations associated with late-life memory performance and decline. HIGHLIGHTS Late-life memory has high heritability that is similar across ancestries. We discovered four novel variants associated with late-life memory. We identified four novel genes associated with late-life memory. Late-life memory shares genetic architecture with psychiatric/autoimmune traits.
Collapse
|
30
|
Kohen CB, Cofresí RU, Piasecki TM, Bartholow BD. Predictive utility of the P3 event-related potential (ERP) response to alcohol cues for ecologically assessed alcohol craving and use. Addict Biol 2024; 29:e13368. [PMID: 38380714 PMCID: PMC10882185 DOI: 10.1111/adb.13368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 12/07/2023] [Accepted: 12/11/2023] [Indexed: 02/22/2024]
Abstract
Neural measures of alcohol cue incentive salience have been associated with retrospective reports of riskier alcohol use behaviour and subjective response profiles. This study tested whether the P3 event-related potential (ERP) elicited by alcohol-related cues (ACR-P3) can forecast alcohol use and craving during real-world drinking episodes. Participants (N = 262; Mage = 19.53; 56% female) completed a laboratory task in which they viewed images of everyday objects (Neutral), non-alcohol drinks (NonAlc) and alcohol beverages (Alc) while EEG was recorded and then completed a 21-day ecological momentary assessment (EMA) protocol in which they recorded alcohol craving and consumption. Anthropometrics were used to derive estimated blood alcohol concentration (eBAC) throughout drinking episodes. Multilevel modelling indicated positive associations between P3 amplitudes elicited by all stimuli and within-episode alcohol use measures (e.g., eBAC, cumulative drinks). Focal follow-up analyses indicated a positive association between AlcP3 amplitude and eBAC within episodes: Larger AlcP3 was associated with a steeper rise in eBAC. This association was robust to controlling for the association between NonAlcP3 and eBAC. AlcP3 also was positively associated with episode-level measures (e.g., max drinks, max eBAC). There were no associations between any P3 variables and EMA-based craving measures. Thus, individual differences in neural measures of alcohol cue incentive salience appear to predict the speed and intensity of alcohol consumption but not reports of craving during real-world alcohol use episodes.
Collapse
Affiliation(s)
- Casey B. Kohen
- Department of Psychological SciencesUniversity of MissouriColumbiaMissouriUSA
| | - Roberto U. Cofresí
- Department of Psychological SciencesUniversity of MissouriColumbiaMissouriUSA
| | - Thomas M. Piasecki
- Department of Medicine and Center for Tobacco Research and InterventionUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
| | - Bruce D. Bartholow
- Department of Psychological SciencesUniversity of MissouriColumbiaMissouriUSA
- Department of Psychological and Brain SciencesUniversity of IowaIowa CityIowaUSA
| |
Collapse
|
31
|
Choi H, Hong Y, Najafi S, Kim SY, Shea J, Hwang DS, Choi YS. Spontaneous Transition of Spherical Coacervate to Vesicle-Like Compartment. Adv Sci (Weinh) 2024; 11:e2305978. [PMID: 38063842 PMCID: PMC10870063 DOI: 10.1002/advs.202305978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 11/12/2023] [Indexed: 02/17/2024]
Abstract
Numerous biological systems contain vesicle-like biomolecular compartments without membranes, which contribute to diverse functions including gene regulation, stress response, signaling, and skin barrier formation. Coacervation, as a form of liquid-liquid phase separation (LLPS), is recognized as a representative precursor to the formation and assembly of membrane-less vesicle-like structures, although their formation mechanism remains unclear. In this study, a coacervation-driven membrane-less vesicle-like structure is constructed using two proteins, GG1234 (an anionic intrinsically disordered protein) and bhBMP-2 (a bioengineered human bone morphogenetic protein 2). GG1234 formed both simple coacervates by itself and complex coacervates with the relatively cationic bhBMP-2 under acidic conditions. Upon addition of dissolved bhBMP-2 to the simple coacervates of GG1234, a phase transition from spherical simple coacervates to vesicular condensates occurred via the interactions between GG1234 and bhBMP-2 on the surface of the highly viscoelastic GG1234 simple coacervates. Furthermore, the shell structure in the outer region of the GG1234/bhBMP-2 vesicular condensates exhibited gel-like properties, leading to the formation of multiphasic vesicle-like compartments. A potential mechanism is proposed for the formation of the membrane-less GG1234/bhBMP-2 vesicle-like compartments. This study provides a dynamic process underlying the formation of biomolecular multiphasic condensates, thereby enhancing the understanding of these biomolecular structures.
Collapse
Affiliation(s)
- Hyunsuk Choi
- Department of Chemical Engineering and Applied ChemistryChungnam National UniversityDaejeon34134South Korea
| | - Yuri Hong
- Division of Environmental Science and EngineeringPohang University of Science and Technology (POSTECH)Pohang37673South Korea
| | - Saeed Najafi
- Department of Chemistry and BiochemistryUniversity of CaliforniaSanta BarbaraCA93106USA
| | - Sun Young Kim
- Department of Chemical Engineering and Applied ChemistryChungnam National UniversityDaejeon34134South Korea
| | - Joan‐Emma Shea
- Department of Chemistry and BiochemistryUniversity of CaliforniaSanta BarbaraCA93106USA
| | - Dong Soo Hwang
- Division of Environmental Science and EngineeringPohang University of Science and Technology (POSTECH)Pohang37673South Korea
| | - Yoo Seong Choi
- Department of Chemical Engineering and Applied ChemistryChungnam National UniversityDaejeon34134South Korea
| |
Collapse
|
32
|
Mohs R, Bakker A, Rosenzweig‐Lipson S, Rosenblum M, Barton RL, Albert MS, Cohen S, Zeger S, Gallagher M. The HOPE4MCI study: A randomized double-blind assessment of AGB101 for the treatment of MCI due to AD. Alzheimers Dement (N Y) 2024; 10:e12446. [PMID: 38356475 PMCID: PMC10865488 DOI: 10.1002/trc2.12446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 10/25/2023] [Accepted: 12/27/2023] [Indexed: 02/16/2024]
Abstract
INTRODUCTION In addition to the accumulation of amyloid plaques and neurofibrillary tangles, the presence of excess neural activity is a pathological hallmark of Alzheimer's disease (AD) and a prognostic indicator for progression of AD pathology and clinical/cognitive worsening in mild cognitive impairment due to Alzheimer's disease (MCI due to AD). The HOPE4MCI clinical study tested the efficacy of a therapeutic with demonstrated ability to normalize heightened neural activity in the hippocampus in a randomized controlled trial of 78 weeks duration in patients with MCI due to AD. METHODS One hundred and sixty-four participants were randomized to placebo (n = 83) or AGB101 (n = 81), an extended-release formulation of low dose (220 mg) levetiracetam. The primary endpoint was the change in Clinical Dementia Rating Scale Sum of Boxes score (CDR-SB) comparing follow up at 18 months to baseline. The goal of the primary efficacy analysis was to estimate the difference between the AGB101 and placebo arms in the mean change of the primary endpoint. RESULTS The mean change in CDR-SB was estimated to be 1.12 (95% confidence interval [CI]: 0.66, 1.69) for the AGB101 arm and 1.22 (95% CI: 0.75, 1.78) for the placebo arm. The estimated difference between arms is -0.10 (95% CI: -0.85, 0.58), which was not statistically significant. In a prespecified analysis, the difference was -0.45 (95% CI: -1.43, 0.53) for ApoE-4 noncarriers and -0.10 (95% CI: -0.92, 0.72) for apolipoprotein E (ApoE)-4 carriers. DISCUSSION The possibility that ApoE-4 carriers and noncarriers will respond differently to therapeutic intervention is consistent with recently reported findings from biologics and the present results show further testing of AGB101 in patients with MCI due to AD who are noncarriers of the ApoeE-4 allele is warranted. Conclusions from the HOPE4MCI study are limited primarily due to the small sample size and results can only be regarded as a guide to future research.
Collapse
Affiliation(s)
| | - Arnold Bakker
- Department of Psychiatry and Behavioral SciencesJohns Hopkins University School of MedicineBaltimoreMarylandUSA
- Department of NeurologyJohns Hopkins University School of MedicineBaltimoreMarylandUSA
- Department of Psychological and Brain SciencesJohns Hopkins UniversityBaltimoreMarylandUSA
| | | | - Michael Rosenblum
- Department of BiostatisticsJohns Hopkins University Bloomberg School of Public HealthBaltimoreMarylandUSA
| | | | - Marilyn S. Albert
- Department of NeurologyJohns Hopkins University School of MedicineBaltimoreMarylandUSA
| | | | - Scott Zeger
- Department of BiostatisticsJohns Hopkins University Bloomberg School of Public HealthBaltimoreMarylandUSA
| | - Michela Gallagher
- AgeneBio, Inc.BaltimoreMarylandUSA
- Department of Psychological and Brain SciencesJohns Hopkins UniversityBaltimoreMarylandUSA
| |
Collapse
|
33
|
Yoshitake R, Mori H, Ha D, Wu X, Wang J, Wang X, Saeki K, Chang G, Shim HJ, Chan Y, Chen S. Molecular features of luminal breast cancer defined through spatial and single-cell transcriptomics. Clin Transl Med 2024; 14:e1548. [PMID: 38282415 PMCID: PMC10823285 DOI: 10.1002/ctm2.1548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 12/28/2023] [Accepted: 01/06/2024] [Indexed: 01/30/2024] Open
Abstract
BACKGROUND Intratumour heterogeneity is a hallmark of most solid tumours, including breast cancers. We applied spatial transcriptomics and single-cell RNA-sequencing on patient-derived xenografts (PDXs) to profile spatially resolved cell populations within oestrogen receptor-positive (ER+ ) breast cancer and to elucidate their importance in oestrogen-dependent tumour growth. METHODS Two PDXs of 'ER-high' breast cancers with opposite oestrogen-mediated growth responses were investigated: oestrogen-suppressed GS3 (80-100% ER) and oestrogen-dependent SC31 (40-90% ER) models. The observation was validated via single-cell analyses on an 'ER-low' PDX, GS1 (5% ER). The results from our spatial and single-cell analyses were further supported by a public ER+ breast cancer single-cell dataset and protein-based dual immunohistochemistry (IHC) of SC31 examining important luminal cancer markers (i.e., ER, progesterone receptor and Ki67). The translational implication of our findings was assessed by clinical outcome analyses on publicly available cohorts. RESULTS Our space-gene-function study revealed four spatially distinct compartments within ER+ breast cancers. These compartments showed functional diversity (oestrogen-responsive, proliferative, hypoxia-induced and inflammation-related). The 'proliferative' population, rather than the 'oestrogen-responsive' compartment, was crucial for oestrogen-dependent tumour growth, leading to the acquisition of luminal B-like features. The cells expressing typical oestrogen-responsive genes like PGR were not directly linked to oestrogen-dependent proliferation. Dual IHC analyses demonstrated the distinct contribution of the Ki67+ proliferative cells toward oestrogen-mediated growth and their response to a CDK4/6 inhibitor. The gene signatures derived from the proliferative, hypoxia-induced and inflammation-related compartments were significantly correlated with worse clinical outcomes, while patients with the oestrogen-responsive signature showed better prognoses, suggesting that this compartment would not be directly associated with oestrogen-dependent tumour progression. CONCLUSIONS Our study identified the gene signature in our 'proliferative' compartment as an important determinant of luminal cancer subtypes. This 'proliferative' cell population is a causative feature of luminal B breast cancer, contributing toward its aggressive behaviours.
Collapse
Affiliation(s)
- Ryohei Yoshitake
- Department of Cancer Biology and Molecular MedicineBeckman Research Institute of City of HopeDuarteCaliforniaUSA
| | - Hitomi Mori
- Department of Cancer Biology and Molecular MedicineBeckman Research Institute of City of HopeDuarteCaliforniaUSA
- Department of Surgery and OncologyGraduate School of Medicine, Kyushu UniversityFukuokaJapan
| | - Desiree Ha
- Department of Cancer Biology and Molecular MedicineBeckman Research Institute of City of HopeDuarteCaliforniaUSA
| | - Xiwei Wu
- Integrative Genomics CoreBeckman Research Institute of City of HopeMonroviaCaliforniaUSA
| | - Jinhui Wang
- Integrative Genomics CoreBeckman Research Institute of City of HopeMonroviaCaliforniaUSA
| | - Xiaoqiang Wang
- Department of Cancer Biology and Molecular MedicineBeckman Research Institute of City of HopeDuarteCaliforniaUSA
| | - Kohei Saeki
- Department of Cancer Biology and Molecular MedicineBeckman Research Institute of City of HopeDuarteCaliforniaUSA
- Faculty of Veterinary MedicineOkayama University of ScienceImabariEhimeJapan
| | - Gregory Chang
- Department of Cancer Biology and Molecular MedicineBeckman Research Institute of City of HopeDuarteCaliforniaUSA
| | - Hyun Jeong Shim
- Department of Cancer Biology and Molecular MedicineBeckman Research Institute of City of HopeDuarteCaliforniaUSA
| | - Yin Chan
- Department of Cancer Biology and Molecular MedicineBeckman Research Institute of City of HopeDuarteCaliforniaUSA
| | - Shiuan Chen
- Department of Cancer Biology and Molecular MedicineBeckman Research Institute of City of HopeDuarteCaliforniaUSA
| |
Collapse
|
34
|
Shin MD, Jung E, Moreno‐Gonzalez MA, Ortega‐Rivera OA, Steinmetz NF. Pluronic F127 "nanoarmor" for stabilization of Cowpea mosaic virus immunotherapy. Bioeng Transl Med 2024; 9:e10574. [PMID: 38193118 PMCID: PMC10771553 DOI: 10.1002/btm2.10574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 06/01/2023] [Accepted: 06/10/2023] [Indexed: 01/10/2024] Open
Abstract
Our lab demonstrated that intratumoral Cowpea mosaic virus (CPMV) is a potent antitumor immunotherapy when used as in situ vaccine. As we pave the way for human clinical translation, formulation chemistry needs to be optimized for long-term storage of the drug candidate. In this work, CPMV was nanoengineered with Pluronic F127 to realize liquid and gel formulations which mitigate structural changes and RNA release during long-term storage. We evaluated the CPMV-F127 formulations for their stability and biological activity through a combination of in vitro assays and efficacy in vivo using a B16F10 murine melanoma model. Results demonstrate that both F127 liquid and gel formulations preserve CPMV structure and function following extended periods of thermal incubation at 4°C, 25°C, and 37°C. Heat-incubated CPMV without formulation resulted in structural changes and inferior in vivo efficacy. In stark contrast, in vivo efficacy was preserved when CPMV was formulated and protected with the F127 "nanoarmor."
Collapse
Affiliation(s)
- Matthew D. Shin
- Department of NanoEngineeringUniversity of CaliforniaLa JollaCaliforniaUSA
- Center for Nano‐ImmunoEngineeringUniversity of CaliforniaLa JollaCaliforniaUSA
| | - Eunkyeong Jung
- Department of NanoEngineeringUniversity of CaliforniaLa JollaCaliforniaUSA
- Center for Nano‐ImmunoEngineeringUniversity of CaliforniaLa JollaCaliforniaUSA
| | - Miguel A. Moreno‐Gonzalez
- Department of NanoEngineeringUniversity of CaliforniaLa JollaCaliforniaUSA
- Center for Nano‐ImmunoEngineeringUniversity of CaliforniaLa JollaCaliforniaUSA
| | - Oscar A. Ortega‐Rivera
- Department of NanoEngineeringUniversity of CaliforniaLa JollaCaliforniaUSA
- Center for Nano‐ImmunoEngineeringUniversity of CaliforniaLa JollaCaliforniaUSA
| | - Nicole F. Steinmetz
- Department of NanoEngineeringUniversity of CaliforniaLa JollaCaliforniaUSA
- Center for Nano‐ImmunoEngineeringUniversity of CaliforniaLa JollaCaliforniaUSA
- Department of BioengineeringUniversity of CaliforniaLa JollaCaliforniaUSA
- Department of RadiologyUniversity of CaliforniaLa JollaCaliforniaUSA
- Moores Cancer CenterUniversity of CaliforniaLa JollaCaliforniaUSA
- Institute for Materials Discovery and Design, Department of NanoEngineeringUniversity of CaliforniaLa JollaCaliforniaUSA
| |
Collapse
|
35
|
Gjini K, Casey C, Kunkel D, Her M, Banks MI, Pearce RA, Lennertz R, Sanders RD. Delirium is associated with loss of feedback cortical connectivity. Alzheimers Dement 2024; 20:511-524. [PMID: 37695013 PMCID: PMC10840828 DOI: 10.1002/alz.13471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 08/10/2023] [Accepted: 08/18/2023] [Indexed: 09/12/2023]
Abstract
INTRODUCTION Post-operative delirium (POD) is associated with increased morbidity and mortality but is bereft of treatments, largely due to our limited understanding of the underlying pathophysiology. We hypothesized that delirium reflects a disturbance in cortical connectivity that leads to altered predictions of the sensory environment. METHODS High-density electroencephalogram recordings during an oddball auditory roving paradigm were collected from 131 patients. Dynamic causal modeling (DCM) analysis facilitated inference about the neuronal connectivity and inhibition-excitation dynamics underlying auditory-evoked responses. RESULTS Mismatch negativity amplitudes were smaller in patients with POD. DCM showed that delirium was associated with decreased left-sided superior temporal gyrus (l-STG) to auditory cortex feedback connectivity. Feedback connectivity also negatively correlated with delirium severity and systemic inflammation. Increased inhibition of l-STG, with consequent decreases in feed-forward and feed-back connectivity, occurred for oddball tones during delirium. DISCUSSION Delirium is associated with decreased feedback cortical connectivity, possibly resulting from increased intrinsic inhibitory tone. HIGHLIGHTS Mismatch negativity amplitude was reduced in patients with delirium. Patients with postoperative delirium had increased feedforward connectivity before surgery. Feedback connectivity was diminished from left-side superior temporal gyrus to left primary auditory sensory area during delirium. Feedback connectivity inversely correlated with inflammation and delirium severity.
Collapse
Affiliation(s)
- Klevest Gjini
- Department of NeurologyUniversity of Wisconsin–MadisonMadisonWisconsinUSA
| | - Cameron Casey
- Department of AnesthesiologyUniversity of Wisconsin–MadisonMadisonWisconsinUSA
- Pediatric Neuromodulation Laboratory, Waisman CenterUniversity of Wisconsin–MadisonMadisonWisconsinUSA
| | - David Kunkel
- Department of AnesthesiologyUniversity of Wisconsin–MadisonMadisonWisconsinUSA
| | - Maihlee Her
- Department of AnesthesiologyUniversity of Wisconsin–MadisonMadisonWisconsinUSA
| | - Matthew I. Banks
- Department of AnesthesiologyUniversity of Wisconsin–MadisonMadisonWisconsinUSA
- Department of NeuroscienceUniversity of Wisconsin–MadisonMadisonWisconsinUSA
| | - Robert A. Pearce
- Department of AnesthesiologyUniversity of Wisconsin–MadisonMadisonWisconsinUSA
| | - Richard Lennertz
- Department of AnesthesiologyUniversity of Wisconsin–MadisonMadisonWisconsinUSA
| | - Robert D. Sanders
- Department of Anaesthetics & Institute of Academic SurgeryRoyal Prince Alfred HospitalCamperdownNew South WalesAustralia
- NHMRC Clinical Trials Centre and Central Clinical SchoolUniversity of SydneyCamperdownNew South WalesAustralia
| |
Collapse
|
36
|
Veitch DP, Weiner MW, Miller M, Aisen PS, Ashford MA, Beckett LA, Green RC, Harvey D, Jack CR, Jagust W, Landau SM, Morris JC, Nho KT, Nosheny R, Okonkwo O, Perrin RJ, Petersen RC, Rivera Mindt M, Saykin A, Shaw LM, Toga AW, Tosun D. The Alzheimer's Disease Neuroimaging Initiative in the era of Alzheimer's disease treatment: A review of ADNI studies from 2021 to 2022. Alzheimers Dement 2024; 20:652-694. [PMID: 37698424 PMCID: PMC10841343 DOI: 10.1002/alz.13449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 07/27/2023] [Accepted: 08/01/2023] [Indexed: 09/13/2023]
Abstract
The Alzheimer's Disease Neuroimaging Initiative (ADNI) aims to improve Alzheimer's disease (AD) clinical trials. Since 2006, ADNI has shared clinical, neuroimaging, and cognitive data, and biofluid samples. We used conventional search methods to identify 1459 publications from 2021 to 2022 using ADNI data/samples and reviewed 291 impactful studies. This review details how ADNI studies improved disease progression understanding and clinical trial efficiency. Advances in subject selection, detection of treatment effects, harmonization, and modeling improved clinical trials and plasma biomarkers like phosphorylated tau showed promise for clinical use. Biomarkers of amyloid beta, tau, neurodegeneration, inflammation, and others were prognostic with individualized prediction algorithms available online. Studies supported the amyloid cascade, emphasized the importance of neuroinflammation, and detailed widespread heterogeneity in disease, linked to genetic and vascular risk, co-pathologies, sex, and resilience. Biological subtypes were consistently observed. Generalizability of ADNI results is limited by lack of cohort diversity, an issue ADNI-4 aims to address by enrolling a diverse cohort.
Collapse
Affiliation(s)
- Dallas P. Veitch
- Department of Veterans Affairs Medical CenterNorthern California Institute for Research and Education (NCIRE)San FranciscoCaliforniaUSA
- Department of Veterans Affairs Medical CenterCenter for Imaging of Neurodegenerative DiseasesSan FranciscoCaliforniaUSA
| | - Michael W. Weiner
- Department of Veterans Affairs Medical CenterCenter for Imaging of Neurodegenerative DiseasesSan FranciscoCaliforniaUSA
- Department of Radiology and Biomedical ImagingUniversity of CaliforniaSan FranciscoCaliforniaUSA
- Department of MedicineUniversity of CaliforniaSan FranciscoCaliforniaUSA
- Department of Psychiatry and Behavioral SciencesUniversity of CaliforniaSan FranciscoCaliforniaUSA
- Department of NeurologyUniversity of CaliforniaSan FranciscoCaliforniaUSA
| | - Melanie Miller
- Department of Veterans Affairs Medical CenterNorthern California Institute for Research and Education (NCIRE)San FranciscoCaliforniaUSA
- Department of Veterans Affairs Medical CenterCenter for Imaging of Neurodegenerative DiseasesSan FranciscoCaliforniaUSA
| | - Paul S. Aisen
- Alzheimer's Therapeutic Research InstituteUniversity of Southern CaliforniaSan DiegoCaliforniaUSA
| | - Miriam A. Ashford
- Department of Veterans Affairs Medical CenterNorthern California Institute for Research and Education (NCIRE)San FranciscoCaliforniaUSA
| | - Laurel A. Beckett
- Division of BiostatisticsDepartment of Public Health SciencesUniversity of CaliforniaDavisCaliforniaUSA
| | - Robert C. Green
- Division of GeneticsDepartment of MedicineBrigham and Women's HospitalBroad Institute Ariadne Labs and Harvard Medical SchoolBostonMassachusettsUSA
| | - Danielle Harvey
- Division of BiostatisticsDepartment of Public Health SciencesUniversity of CaliforniaDavisCaliforniaUSA
| | | | - William Jagust
- Helen Wills Neuroscience InstituteUniversity of California BerkeleyBerkeleyCaliforniaUSA
| | - Susan M. Landau
- Helen Wills Neuroscience InstituteUniversity of California BerkeleyBerkeleyCaliforniaUSA
| | - John C. Morris
- Knight Alzheimer's Disease Research CenterWashington University School of MedicineSaint LouisMissouriUSA
- Department of NeurologyWashington University School of MedicineSaint LouisMissouriUSA
- Department of Pathology and ImmunologyWashington University School of MedicineSaint LouisMissouriUSA
| | - Kwangsik T. Nho
- Department of Radiology and Imaging Sciences and the Indiana Alzheimer's Disease Research CenterIndiana University School of MedicineIndianapolisIndianaUSA
- Center for Computational Biology and BioinformaticsIndiana University School of MedicineIndianapolisIndianaUSA
| | - Rachel Nosheny
- Department of Veterans Affairs Medical CenterCenter for Imaging of Neurodegenerative DiseasesSan FranciscoCaliforniaUSA
- Department of Psychiatry and Behavioral SciencesUniversity of CaliforniaSan FranciscoCaliforniaUSA
| | - Ozioma Okonkwo
- Wisconsin Alzheimer's Disease Research Center and Department of MedicineUniversity of Wisconsin School of Medicine and Public HealthMadisonWisconsinUSA
| | - Richard J. Perrin
- Knight Alzheimer's Disease Research CenterWashington University School of MedicineSaint LouisMissouriUSA
- Department of NeurologyWashington University School of MedicineSaint LouisMissouriUSA
- Department of Pathology and ImmunologyWashington University School of MedicineSaint LouisMissouriUSA
| | | | - Monica Rivera Mindt
- Department of PsychologyLatin American and Latino Studies InstituteAfrican and African American StudiesFordham UniversityNew YorkNew YorkUSA
- Department of NeurologyIcahn School of Medicine at Mount SinaiNew YorkNew YorkUSA
| | - Andrew Saykin
- Department of Radiology and Imaging Sciences and the Indiana Alzheimer's Disease Research CenterIndiana University School of MedicineIndianapolisIndianaUSA
- Department of Medical and Molecular GeneticsIndiana University School of MedicineIndianapolisIndianaUSA
| | - Leslie M. Shaw
- Department of Pathology and Laboratory Medicine and the PENN Alzheimer's Disease Research CenterCenter for Neurodegenerative ResearchPerelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | - Arthur W. Toga
- Laboratory of Neuro ImagingInstitute of Neuroimaging and InformaticsKeck School of Medicine of University of Southern CaliforniaLos AngelesCaliforniaUSA
| | - Duygu Tosun
- Department of Veterans Affairs Medical CenterCenter for Imaging of Neurodegenerative DiseasesSan FranciscoCaliforniaUSA
- Department of Radiology and Biomedical ImagingUniversity of CaliforniaSan FranciscoCaliforniaUSA
| | | |
Collapse
|
37
|
Giloteaux L, Glass KA, Germain A, Franconi CJ, Zhang S, Hanson MR. Dysregulation of extracellular vesicle protein cargo in female myalgic encephalomyelitis/chronic fatigue syndrome cases and sedentary controls in response to maximal exercise. J Extracell Vesicles 2024; 13:e12403. [PMID: 38173127 PMCID: PMC10764978 DOI: 10.1002/jev2.12403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Revised: 10/27/2023] [Accepted: 12/01/2023] [Indexed: 01/05/2024] Open
Abstract
In healthy individuals, physical exercise improves cardiovascular health and muscle strength, alleviates fatigue and reduces the risk of chronic diseases. Although exercise is suggested as a lifestyle intervention to manage various chronic illnesses, it negatively affects people with myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS), who suffer from exercise intolerance. We hypothesized that altered extracellular vesicle (EV) signalling in ME/CFS patients after an exercise challenge may contribute to their prolonged and exacerbated negative response to exertion (post-exertional malaise). EVs were isolated by size exclusion chromatography from the plasma of 18 female ME/CFS patients and 17 age- and BMI-matched female sedentary controls at three time points: before, 15 min, and 24 h after a maximal cardiopulmonary exercise test. EVs were characterized using nanoparticle tracking analysis and their protein cargo was quantified using Tandem Mass Tag-based (TMT) proteomics. The results show that exercise affects the EV proteome in ME/CFS patients differently than in healthy individuals and that changes in EV proteins after exercise are strongly correlated with symptom severity in ME/CFS. Differentially abundant proteins in ME/CFS patients versus controls were involved in many pathways and systems, including coagulation processes, muscle contraction (both smooth and skeletal muscle), cytoskeletal proteins, the immune system and brain signalling.
Collapse
Affiliation(s)
- Ludovic Giloteaux
- Department of Molecular Biology and GeneticsCornell UniversityIthacaNew YorkUSA
| | - Katherine A. Glass
- Department of Molecular Biology and GeneticsCornell UniversityIthacaNew YorkUSA
| | - Arnaud Germain
- Department of Molecular Biology and GeneticsCornell UniversityIthacaNew YorkUSA
| | - Carl J. Franconi
- Department of Molecular Biology and GeneticsCornell UniversityIthacaNew YorkUSA
| | - Sheng Zhang
- Proteomics and Metabolomics Facility, Institute of BiotechnologyCornell UniversityIthacaNew YorkUSA
| | - Maureen R. Hanson
- Department of Molecular Biology and GeneticsCornell UniversityIthacaNew YorkUSA
| |
Collapse
|
38
|
Kota KJ, Dawson A, Papas J, Sotelo V, Su G, Li M, Lee W, Estervil J, Marquez M, Sarkar S, Lopez LL, Hu WT. Factors associated with attitudes toward research MRI in older Asian Americans. Alzheimers Dement (N Y) 2024; 10:e12449. [PMID: 38356478 PMCID: PMC10865479 DOI: 10.1002/trc2.12449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 11/14/2023] [Accepted: 12/11/2023] [Indexed: 02/16/2024]
Abstract
INTRODUCTION South Asian (SA) and East Asian (EA) older adults represent the fastest-growing racial/ethnic groups of Americans at risk for dementia. While recruiting older SA adults into a brain health study, we encountered unexpected hesitancy toward structural brain magnetic resonance imaging (MRI) analysis and stigmatizing attitudes related to internal locus of control (LoC) for future dementia risks. We hypothesized that support for MRI-related research was influenced by these attitudes as well as personal MRI experience, perceived MRI safety, and concerns for personal risk for future dementia/stroke. METHODS We developed a brief cross-sectional survey to assess older adults' MRI experiences and perceptions, desire to learn of six incidental findings of increasing impact on health, and attitudes related to dementia (including LoC) and research participation. We recruited a convenience sample of 256 respondents (74% reporting as 50+) from the New Jersey/New York City area to complete the survey (offered in English, Chinese, Korean, and Spanish) and modeled the proportional odds (PO) for favorable attitudes toward research activities. RESULTS Seventy-seven SA and 84 EA respondents were analyzed alongside 95 White, Black, or Hispanic adults. White (PO = 2.54, p = 0.013) and EA (PO = 2.14, p = 0.019) respondents were both more likely than SA respondents to endorse healthy volunteers' participation in research, and the difference between White and SA respondents was mediated by the latter's greater internal LoC for dementia risks. EA respondents had more worries for future dementia/stroke than SA respondents (p = 0.006) but still shared SA respondents' lower wish (measured by proportion of total) to learn of incidental MRI findings. DISCUSSION SA-and EA compared to SA-older adults had low desire to learn of incidental MRI findings but had different attitudes toward future dementia/stroke risks. A culturally appropriate protocol to disclose incidental MRI findings may improve SA and EA participation in brain health research. Highlights Older Asian Americans have limited interest in incidental findings on research MRISouth Asians are most likely to attribute dementia to people's own behaviorsSouth Asians' attitudes mediate lower support for healthy volunteers in researchSouth and East Asians differ in dementia worries and research-related attitudes.
Collapse
Affiliation(s)
- Karthik J Kota
- Departments of NeurologyInstitute for Health, Health Care Policy, and Aging ResearchRutgers Biomedical and Health SciencesNew BrunswickNew JerseyUSA
- Departments of MedicineRutgers‐Robert Wood Johnson Medical SchoolInstitute for Health, Health Care Policy, and Aging ResearchRutgers Biomedical and Health SciencesNew BrunswickNew JerseyUSA
| | - Alice Dawson
- Departments of NeurologyInstitute for Health, Health Care Policy, and Aging ResearchRutgers Biomedical and Health SciencesNew BrunswickNew JerseyUSA
- Center for Healthy AgingInstitute for Health, Health Care Policy, and Aging ResearchRutgers Biomedical and Health SciencesNew BrunswickNew JerseyUSA
| | - Julia Papas
- Departments of NeurologyInstitute for Health, Health Care Policy, and Aging ResearchRutgers Biomedical and Health SciencesNew BrunswickNew JerseyUSA
- Center for Healthy AgingInstitute for Health, Health Care Policy, and Aging ResearchRutgers Biomedical and Health SciencesNew BrunswickNew JerseyUSA
| | - Victor Sotelo
- Departments of NeurologyInstitute for Health, Health Care Policy, and Aging ResearchRutgers Biomedical and Health SciencesNew BrunswickNew JerseyUSA
- Center for Healthy AgingInstitute for Health, Health Care Policy, and Aging ResearchRutgers Biomedical and Health SciencesNew BrunswickNew JerseyUSA
| | - Guibin Su
- Center for Healthy AgingInstitute for Health, Health Care Policy, and Aging ResearchRutgers Biomedical and Health SciencesNew BrunswickNew JerseyUSA
| | - Mei‐Ling Li
- Center for Healthy AgingInstitute for Health, Health Care Policy, and Aging ResearchRutgers Biomedical and Health SciencesNew BrunswickNew JerseyUSA
| | - Woowon Lee
- Center for Healthy AgingInstitute for Health, Health Care Policy, and Aging ResearchRutgers Biomedical and Health SciencesNew BrunswickNew JerseyUSA
| | - Jaunis Estervil
- Center for Healthy AgingInstitute for Health, Health Care Policy, and Aging ResearchRutgers Biomedical and Health SciencesNew BrunswickNew JerseyUSA
| | - Melissa Marquez
- Center for Healthy AgingInstitute for Health, Health Care Policy, and Aging ResearchRutgers Biomedical and Health SciencesNew BrunswickNew JerseyUSA
| | - Shromona Sarkar
- Center for Healthy AgingInstitute for Health, Health Care Policy, and Aging ResearchRutgers Biomedical and Health SciencesNew BrunswickNew JerseyUSA
| | - Lisa Lanza Lopez
- Center for Healthy AgingInstitute for Health, Health Care Policy, and Aging ResearchRutgers Biomedical and Health SciencesNew BrunswickNew JerseyUSA
| | - William T. Hu
- Departments of NeurologyInstitute for Health, Health Care Policy, and Aging ResearchRutgers Biomedical and Health SciencesNew BrunswickNew JerseyUSA
- Center for Healthy AgingInstitute for Health, Health Care Policy, and Aging ResearchRutgers Biomedical and Health SciencesNew BrunswickNew JerseyUSA
| |
Collapse
|
39
|
Bruno D, Gicas KM, Jauregi‐Zinkunegi A, Mueller KD, Lamar M. Delayed primacy recall performance predicts post mortem Alzheimer's disease pathology from unimpaired ante mortem cognitive baseline. Alzheimers Dement (Amst) 2024; 16:e12524. [PMID: 38239330 PMCID: PMC10795090 DOI: 10.1002/dad2.12524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 10/31/2023] [Accepted: 12/19/2023] [Indexed: 01/22/2024]
Abstract
We propose a novel method to assess delayed primacy in the Consortium to Establish a Registry for Alzheimer's Disease (CERAD) memory test. We then examine whether this measure predicts post mortem Alzheimer's disease (AD) neuropathology in individuals who were clinically unimpaired at baseline. A total of 1096 individuals were selected from the Rush Alzheimer's Disease Center database registry. All participants were clinically unimpaired at baseline, and had subsequently undergone brain autopsy. Average age at baseline was 78.8 (6.92). A Bayesian regression analysis was carried out with global pathology as an outcome; demographic, clinical, and apolipoprotein E (APOE) data as covariates; and cognitive predictors, including delayed primacy. Global AD pathology was best predicted by delayed primacy. Secondary analyses showed that delayed primacy was mostly associated with neuritic plaques, whereas total delayed recall was associated with neurofibrillary tangles. Sex differential associations were observed. We conclude that CERAD-derived delayed primacy is a useful metric for early detection and diagnosis of AD in unimpaired individuals. Highlights We propose a novel method to analyse serial position in the CERAD memory test.We analyse data from 1096 individuals who were cognitively unimpaired at baseline.Delayed primacy predicts post mortem pathology better than traditional metrics.
Collapse
Affiliation(s)
- Davide Bruno
- School of PsychologyLiverpool John Moores UniversityLiverpoolUK
| | | | | | - Kimberly D. Mueller
- Wisconsin Alzheimer's InstituteSchool of Medicine and Public HealthUniversity of Wisconsin – MadisonMadisonWisconsinUSA
- Wisconsin Alzheimer's Disease Research CenterSchool of Medicine and Public HealthUniversity of Wisconsin – MadisonMadisonWisconsinUSA
- Department of Communication Sciences and DisordersUniversity of Wisconsin – MadisonMadisonWisconsinUSA
| | - Melissa Lamar
- Rush Alzheimer's Disease Center and the Department of Psychiatry and Behavioral SciencesRush University Medical CenterChicagoIllinoisUSA
| |
Collapse
|
40
|
Gollan TH, Garcia DL, Stasenko A, Murillo M, Kim C, Galasko D, Salmon DP. The MINT Sprint 2.0: A picture naming test for detection of naming impairments in Alzheimer's disease and in preclinical AD. Alzheimers Dement 2024; 20:112-123. [PMID: 37464962 PMCID: PMC10916946 DOI: 10.1002/alz.13381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 05/28/2023] [Accepted: 06/14/2023] [Indexed: 07/20/2023]
Abstract
INTRODUCTION Evidence on the onset of naming deficits in Alzheimer's disease (AD) is mixed. Some studies showed an early decline, but others did not. The present study introduces evidence from a novel naming test. METHODS Cognitively normal (n = 138), mild cognitive impairment (MCI; n = 21), and Alzheimer's disease (AD; n = 31) groups completed an expanded Multilingual Naming Test with a time-pressured administration procedure (MINT Sprint 2.0). Cerebrospinal fluid biomarkers classified participants as true controls (n = 61) or preclinical AD (n = 26). RESULTS Total correct MINT Sprint 2.0 scores exhibited good sensitivity and specificity (>0.85) for discriminating true controls from cognitively impaired (MCI/AD) groups and showed significant differences between true controls and preclinical AD groups. Time measurement did not improve classification, but percent resolved scores exhibited promise as an independent AD marker. DISCUSSION Naming deficits can be detected in the earliest stages of AD with tests and procedures designed for this purpose.
Collapse
Affiliation(s)
- Tamar H. Gollan
- Department of PsychiatryUniversity of California, San DiegoLa JollaCaliforniaUSA
| | - Dalia L. Garcia
- Joint Doctoral Program in Language and Communicative DisordersSan Diego State University/University of California, San DiegoLa JollaCaliforniaUSA
| | - Alena Stasenko
- Department of PsychiatryUniversity of California, San DiegoLa JollaCaliforniaUSA
| | - Mayra Murillo
- Department of PsychiatryUniversity of California, San DiegoLa JollaCaliforniaUSA
| | - Chi Kim
- Department of NeurosciencesUniversity of CaliforniaSan Diego and Shiley‐Marcos Alzheimer's Disease Research CenterLa JollaCaliforniaUSA
| | - Douglas Galasko
- Department of NeurosciencesUniversity of CaliforniaSan Diego and Shiley‐Marcos Alzheimer's Disease Research CenterLa JollaCaliforniaUSA
| | - David P. Salmon
- Department of NeurosciencesUniversity of CaliforniaSan Diego and Shiley‐Marcos Alzheimer's Disease Research CenterLa JollaCaliforniaUSA
| |
Collapse
|
41
|
Gao Y, Joshi M, Zhao Z, Mitragotri S. PEGylated therapeutics in the clinic. Bioeng Transl Med 2024; 9:e10600. [PMID: 38193121 PMCID: PMC10771556 DOI: 10.1002/btm2.10600] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 08/27/2023] [Accepted: 09/05/2023] [Indexed: 01/10/2024] Open
Abstract
The covalent attachment of polyethylene glycol (PEG) to therapeutic agents, termed PEGylation, is a well-established and clinically proven drug delivery approach to improve the pharmacokinetics and pharmacodynamics of drugs. Specifically, PEGylation can improve the parent drug's solubility, extend its circulation time, and reduce its immunogenicity, with minimal undesirable properties. PEGylation technology has been applied to various therapeutic modalities including small molecules, aptamers, peptides, and proteins, leading to over 30 PEGylated drugs currently used in the clinic and many investigational PEGylated agents under clinical trials. Here, we summarize the diverse types of PEGylation strategies, the key advantages of PEGylated therapeutics over their parent drugs, and the broad applications and impacts of PEGylation in clinical settings. A particular focus has been given to the size, topology, and functionalities of PEG molecules utilized in clinically used PEGylated drugs, as well as those under clinical trials. An additional section has been dedicated to analyzing some representative PEGylated drugs that were discontinued at different stages of clinical studies. Finally, we critically discuss the current challenges faced in the development and clinical translation of PEGylated agents.
Collapse
Affiliation(s)
- Yongsheng Gao
- John A. Paulson School of Engineering and Applied Sciences, Harvard UniversityAllstonMassachusettsUSA
- Wyss Institute for Biologically Inspired Engineering at Harvard UniversityBostonMassachusettsUSA
- Present address:
Department of BioengineeringThe University of Texas at DallasRichardsonTXUSA
| | - Maithili Joshi
- John A. Paulson School of Engineering and Applied Sciences, Harvard UniversityAllstonMassachusettsUSA
- Wyss Institute for Biologically Inspired Engineering at Harvard UniversityBostonMassachusettsUSA
| | - Zongmin Zhao
- Department of Pharmaceutical SciencesCollege of Pharmacy, University of Illinois at ChicagoChicagoIllinoisUSA
| | - Samir Mitragotri
- John A. Paulson School of Engineering and Applied Sciences, Harvard UniversityAllstonMassachusettsUSA
- Wyss Institute for Biologically Inspired Engineering at Harvard UniversityBostonMassachusettsUSA
| |
Collapse
|
42
|
Joseph JJ, Williams A, Azap RA, Zhao S, Brock G, Kline D, Odei JB, Foraker R, Sims M, Brewer LC, Gray DM, Nolan TS. Role of Sex in the Association of Socioeconomic Status With Cardiovascular Health in Black Americans: The Jackson Heart Study. J Am Heart Assoc 2023; 12:e030695. [PMID: 38038179 PMCID: PMC10727326 DOI: 10.1161/jaha.123.030695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 08/25/2023] [Indexed: 12/02/2023]
Abstract
BACKGROUND Socioeconomic status (SES) is associated with cardiovascular health (CVH). Potential differences by sex in this association remain incompletely understood in Black Americans, where SES disparities are posited to be partially responsible for cardiovascular inequities. The association of SES measures (income, education, occupation, and insurance) with CVH scores was examined in the Jackson Heart Study. METHODS AND RESULTS American Heart Association CVH components (non-high-density-lipoprotein cholesterol, blood pressure, diet, tobacco use, physical activity, sleep, glycemia, and body mass index) were scored cross-sectionally at baseline (scale: 0-100). Differences in CVH and 95% CIs (Estimate, 95% CI) were calculated using linear regression, adjusting for age, sex, and discrimination. Heterogeneity by sex was assessed. Participants had a mean age of 54.8 years (SD 12.6 years), and 65% were women. Lower income, education, occupation (non-management/professional versus management/professional occupations), and insurance status (uninsured, Medicaid, Veterans Affairs, or Medicare versus private insurance) were associated with lower CVH scores (all P<0.01). There was heterogeneity by sex, with greater magnitude of associations of SES measures with CVH in women versus men. The lowest education level (high school) was associated with 8.8-point lower (95% CI: -10.2 to -7.3) and 5.4-point lower (95% CI: -7.2 to -3.6) CVH scores in women and men, respectively (interaction P=0.003). The lowest (<25 000) versus highest level of income (≥$75 000) was associated with a greater reduction in CVH scores in women than men (interaction P=0.1142). CONCLUSIONS Among Black Americans, measures of SES were associated with CVH, with a greater magnitude in women compared with men for education and income. Interventions aimed to address CVH through SES should consider the role of sex.
Collapse
Affiliation(s)
| | | | | | - Songzhu Zhao
- The Ohio State University College of MedicineColumbusOHUSA
| | - Guy Brock
- The Ohio State University College of MedicineColumbusOHUSA
| | - David Kline
- Department of Biostatistics and Data Science, Division of Public Health SciencesWake Forest School of MedicineWinston‐SalemNCUSA
| | - James B. Odei
- The Ohio State University College of Public HealthColumbusOHUSA
| | - Randi Foraker
- Department of Internal Medicine and Institute for InformaticsWashington University in St. Louis School of MedicineSt. LouisMOUSA
| | | | - LaPrincess C. Brewer
- Department of Cardiovascular MedicineCenter for Health Equity and Community Engagement Research, Mayo ClinicRochesterMNUSA
| | - Darrell M. Gray
- Elevance Health (formerly of The Ohio State University Wexner Medical Center)IndianapolisINUSA
| | | |
Collapse
|
43
|
Guo Y, Gharibani P, Agarwal P, Cho S, Thakor NV, Geocadin RG. Hyperacute autonomic and cortical function recovery following cardiac arrest resuscitation in a rodent model. Ann Clin Transl Neurol 2023; 10:2223-2237. [PMID: 37776065 PMCID: PMC10723251 DOI: 10.1002/acn3.51907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 08/29/2023] [Accepted: 09/11/2023] [Indexed: 10/01/2023] Open
Abstract
OBJECTIVE There is a complex interaction between nervous and cardiovascular systems, but sparse data exist on brain-heart electrophysiological responses to cardiac arrest resuscitation. Our aim was to investigate dynamic changes in autonomic and cortical function during hyperacute stage post-resuscitation. METHODS Ten rats were resuscitated from 7-min cardiac arrest, as indicators of autonomic response, heart rate (HR), and its variability (HRV) were measured. HR was monitored through continuous electrocardiography, while HRV was assessed via spectral analysis, whereby the ratio of low-/high-frequency (LF/HF) power indicates the balance between sympathetic/parasympathetic activities. Cortical response was evaluated by continuous electroencephalography and quantitative analysis. Parameters were quantified at 5-min intervals over the first-hour post-resuscitation. Neurological outcome was assessed by Neurological Deficit Score (NDS, range 0-80, higher = better outcomes) at 4-h post-resuscitation. RESULTS A significant increase in HR was noted over 15-30 min post-resuscitation (p < 0.01 vs.15-min, respectively) and correlated with higher NDS (rs = 0.56, p < 0.01). LF/HF ratio over 15-20 min was positively correlated with NDS (rs = 0.75, p < 0.05). Gamma band power surged over 15-30 min post-resuscitation (p < 0.05 vs. 0-15 min, respectively), and gamma band fraction during this period was associated with NDS (rs ≥0.70, p < 0.05, respectively). Significant correlations were identified between increased HR and gamma band power during 15-30 min (rs ≥0.83, p < 0.01, respectively) and between gamma band fraction and LF/HF ratio over 15-20 min post-resuscitation (rs = 0.85, p < 0.01). INTERPRETATIONS Hyperacute recovery of autonomic and cortical function is associated with favorable functional outcomes. While this observation needs further validation, it presents a translational opportunity for better autonomic and neurologic monitoring during early periods post-resuscitation to develop novel interventions.
Collapse
Affiliation(s)
- Yu Guo
- Department of Biomedical EngineeringJohns Hopkins University School of MedicineBaltimoreMarylandUSA
| | - Payam Gharibani
- Division of Neuroimmunology, Department of NeurologyJohns Hopkins University School of MedicineBaltimoreMarylandUSA
| | - Prachi Agarwal
- Department of Electrical and Computer EngineeringJohns Hopkins Whiting School of EngineeringBaltimoreMarylandUSA
| | - Sung‐Min Cho
- Departments of Neurology, Anesthesiology‐Critical Care Medicine and NeurosurgeryJohns Hopkins University School of MedicineBaltimoreMarylandUSA
| | - Nitish V. Thakor
- Department of Biomedical EngineeringJohns Hopkins University School of MedicineBaltimoreMarylandUSA
| | - Romergryko G. Geocadin
- Departments of Neurology, Anesthesiology‐Critical Care Medicine and NeurosurgeryJohns Hopkins University School of MedicineBaltimoreMarylandUSA
| |
Collapse
|
44
|
Meng H, Sengupta A, Ricciotti E, Mrčela A, Mathew D, Mazaleuskaya LL, Ghosh S, Brooks TG, Turner AP, Schanoski AS, Lahens NF, Tan AW, Woolfork A, Grant G, Susztak K, Letizia AG, Sealfon SC, Wherry EJ, Laudanski K, Weljie AM, Meyer NJ, FitzGerald GA. Deep phenotyping of the lipidomic response in COVID-19 and non-COVID-19 sepsis. Clin Transl Med 2023; 13:e1440. [PMID: 37948331 PMCID: PMC10637636 DOI: 10.1002/ctm2.1440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 09/15/2023] [Accepted: 10/01/2023] [Indexed: 11/12/2023] Open
Abstract
BACKGROUND Lipids may influence cellular penetrance by viral pathogens and the immune response that they evoke. We deeply phenotyped the lipidomic response to SARs-CoV-2 and compared that with infection with other pathogens in patients admitted with acute respiratory distress syndrome to an intensive care unit (ICU). METHODS Mass spectrometry was used to characterise lipids and relate them to proteins, peripheral cell immunotypes and disease severity. RESULTS Circulating phospholipases (sPLA2, cPLA2 (PLA2G4A) and PLA2G2D) were elevated on admission in all ICU groups. Cyclooxygenase, lipoxygenase and epoxygenase products of arachidonic acid (AA) were elevated in all ICU groups compared with controls. sPLA2 predicted severity in COVID-19 and correlated with TxA2, LTE4 and the isoprostane, iPF2α-III, while PLA2G2D correlated with LTE4. The elevation in PGD2, like PGI2 and 12-HETE, exhibited relative specificity for COVID-19 and correlated with sPLA2 and the interleukin-13 receptor to drive lymphopenia, a marker of disease severity. Pro-inflammatory eicosanoids remained correlated with severity in COVID-19 28 days after admission. Amongst non-COVID ICU patients, elevations in 5- and 15-HETE and 9- and 13-HODE reflected viral rather than bacterial disease. Linoleic acid (LA) binds directly to SARS-CoV-2 and both LA and its di-HOME products reflected disease severity in COVID-19. In healthy marines, these lipids rose with seroconversion. Eicosanoids linked variably to the peripheral cellular immune response. PGE2, TxA2 and LTE4 correlated with T cell activation, as did PGD2 with non-B non-T cell activation. In COVID-19, LPS stimulated peripheral blood mononuclear cell PGF2α correlated with memory T cells, dendritic and NK cells while LA and DiHOMEs correlated with exhausted T cells. Three high abundance lipids - ChoE 18:3, LPC-O-16:0 and PC-O-30:0 - were altered specifically in COVID. LPC-O-16:0 was strongly correlated with T helper follicular cell activation and all three negatively correlated with multi-omic inflammatory pathways and disease severity. CONCLUSIONS A broad based lipidomic storm is a predictor of poor prognosis in ARDS. Alterations in sPLA2, PGD2 and 12-HETE and the high abundance lipids, ChoE 18:3, LPC-O-16:0 and PC-O-30:0 exhibit relative specificity for COVID-19 amongst such patients and correlate with the inflammatory response to link to disease severity.
Collapse
Affiliation(s)
- Hu Meng
- Institute for Translational Medicine and TherapeuticsPerelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | - Arjun Sengupta
- Department of Systems Pharmacology and Translational TherapeuticsPerelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | - Emanuela Ricciotti
- Institute for Translational Medicine and TherapeuticsPerelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
- Department of Systems Pharmacology and Translational TherapeuticsPerelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | - Antonijo Mrčela
- Institute for Translational Medicine and TherapeuticsPerelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | - Divij Mathew
- Department of Systems Pharmacology and Translational TherapeuticsPerelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
- Institute for Immunology and Immune HealthPerelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | - Liudmila L. Mazaleuskaya
- Institute for Translational Medicine and TherapeuticsPerelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | - Soumita Ghosh
- Institute for Translational Medicine and TherapeuticsPerelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | - Thomas G. Brooks
- Institute for Translational Medicine and TherapeuticsPerelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | - Alexandra P. Turner
- Department of MedicinePerelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | | | - Nicholas F. Lahens
- Institute for Translational Medicine and TherapeuticsPerelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | - Ai Wen Tan
- Department of Systems Pharmacology and Translational TherapeuticsPerelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | - Ashley Woolfork
- Department of Systems Pharmacology and Translational TherapeuticsPerelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | - Greg Grant
- Institute for Translational Medicine and TherapeuticsPerelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
- Department of GeneticsPerelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | - Katalin Susztak
- Department of MedicinePerelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | - Andrew G. Letizia
- Naval Medical Research CenterSilver SpringMarylandUSA
- Naval Medical Research Unit TWOSingaporeSingapore
| | - Stuart C. Sealfon
- Department of NeurologyIcahn School of Medicine at Mount SinaiNew YorkNew YorkUSA
| | - E. John Wherry
- Department of Systems Pharmacology and Translational TherapeuticsPerelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
- Institute for Immunology and Immune HealthPerelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | - Krzysztof Laudanski
- Department of Anesthesiology and Critical CarePerelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | - Aalim M. Weljie
- Institute for Translational Medicine and TherapeuticsPerelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
- Department of Systems Pharmacology and Translational TherapeuticsPerelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | - Nuala J. Meyer
- Institute for Translational Medicine and TherapeuticsPerelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
- Department of MedicinePerelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | - Garret A. FitzGerald
- Institute for Translational Medicine and TherapeuticsPerelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
- Department of Systems Pharmacology and Translational TherapeuticsPerelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
- Department of MedicinePerelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| |
Collapse
|
45
|
Piras IS, Braccagni G, Huentelman MJ, Bortolato M. A preliminary transcriptomic analysis of the orbitofrontal cortex of antisocial individuals. CNS Neurosci Ther 2023; 29:3173-3182. [PMID: 37269073 PMCID: PMC10580340 DOI: 10.1111/cns.14283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 05/18/2023] [Accepted: 05/19/2023] [Indexed: 06/04/2023] Open
Abstract
AIMS Antisocial personality disorder (ASPD) and conduct disorder (CD) are characterized by a persistent pattern of violations of societal norms and others' rights. Ample evidence shows that the pathophysiology of these disorders is contributed by orbitofrontal cortex (OFC) alterations, yet the underlying molecular mechanisms remain elusive. To address this knowledge gap, we performed the first-ever RNA sequencing study of postmortem OFC samples from subjects with a lifetime diagnosis of ASPD and/or CD. METHODS The transcriptomic profiles of OFC samples from subjects with ASPD and/or CD were compared to those of unaffected age-matched controls (n = 9/group). RESULTS The OFC of ASPD/CD-affected subjects displayed significant differences in the expression of 328 genes. Further gene-ontology analyses revealed an extensive downregulation of excitatory neuron transcripts and upregulation of astrocyte transcripts. These alterations were paralleled by significant modifications in synaptic regulation and glutamatergic neurotransmission pathways. CONCLUSION These preliminary findings suggest that ASPD and CD feature a complex array of functional deficits in the pyramidal neurons and astrocytes of the OFC. In turn, these aberrances may contribute to the reduced OFC connectivity observed in antisocial subjects. Future analyses on larger cohorts are needed to validate these results.
Collapse
Affiliation(s)
- Ignazio S. Piras
- Neurogenomics DivisionTranslational Genomics Research Institute (TGen)PhoenixArizonaUSA
| | - Giulia Braccagni
- Department of Pharmacology and ToxicologyCollege of PharmacyUniversity of UtahSalt Lake CityUtahUSA
| | - Matthew J. Huentelman
- Neurogenomics DivisionTranslational Genomics Research Institute (TGen)PhoenixArizonaUSA
| | - Marco Bortolato
- Department of Pharmacology and ToxicologyCollege of PharmacyUniversity of UtahSalt Lake CityUtahUSA
| |
Collapse
|
46
|
Patlin B, Schwerdtfeger L, Tobet S. Neuropeptide stimulation of physiological and immunological responses in precision-cut lung slices. Physiol Rep 2023; 11:e15873. [PMID: 37994278 PMCID: PMC10665790 DOI: 10.14814/phy2.15873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 11/01/2023] [Accepted: 11/04/2023] [Indexed: 11/24/2023] Open
Abstract
Organotypic lung slices, sometimes known as precision-cut lung slices (PCLS), provide an environment in which numerous cell types and interactions can be maintained outside the body (ex vivo). PCLS were maintained ex vivo for up to a week and demonstrated health via the presence of neurons, maintenance of tissue morphology, synthesis of mucopolysaccharides, and minimal cell death. Multiple phenotypes of neuronal fibers were present in lung slices with varied size, caliber, and neurotransmitter immunoreactivity. Of the neuropeptides present in fibers, calcitonin gene-related peptide (CGRP) was the most prevalent. Exposing PCLS to recombinant CGRP resulted in the proliferation and dispersion of CD19+ B cells in slices taken selectively from females. The number of granules containing immunoreactive (ir) surfactant protein C (SPC), which are representative of alveolar type 2 cells, increased in slices from females within 24 h of exposure to CGRP. Additionally, ir-SPC granule size increased in slices from males and females across 48 h of exposure to CGRP. Exposure of PCLS to exogenous CGRP did not alter the number of solitary pulmonary neuroendocrine cells (PNEC) but did result in neuroendocrine bodies that had significantly more cells. Neuronal fiber numbers were unchanged based on ir-peripherin; however, ir-CGRP became non-detectable in fibers while unchanged in PNECs. The effects of exogenous CGRP provide insight into innate immune and neuroendocrine responses in the lungs that may be partially regulated by neural fibers. The sex-dependent nature of these changes may point to the basis for sex-selective outcomes among respiratory diseases.
Collapse
Affiliation(s)
- B. Patlin
- Department of Biochemistry and Molecular BiologyColorado State UniversityFort CollinsColoradoUSA
| | - L. Schwerdtfeger
- Department of NeurologyHarvard Medical School and Ann Romney Center for Neurologic Diseases, Brigham and Women's HospitalBostonMassachusettsUSA
| | - S. Tobet
- School of Biomedical Engineering and Department of Biomedical SciencesColorado State UniversityFort CollinsColoradoUSA
| |
Collapse
|
47
|
Bittel DC, Jaiswal JK. Early Endosomes Undergo Calcium-Triggered Exocytosis and Enable Repair of Diffuse and Focal Plasma Membrane Injury. Adv Sci (Weinh) 2023; 10:e2300245. [PMID: 37705135 PMCID: PMC10667805 DOI: 10.1002/advs.202300245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 06/27/2023] [Indexed: 09/15/2023]
Abstract
Cells are routinely exposed to agents that cause plasma membrane (PM) injury. While pore-forming toxins (PFTs), and chemicals cause nanoscale holes dispersed throughout the PM, mechanical trauma causes focal lesions in the PM. To examine if these distinct injuries share common repair mechanism, membrane trafficking is monitored as the PM repairs from such injuries. During the course of repair, dispersed PM injury by the PFT Streptolysin O activates endocytosis, while focal mechanical injury to the PM inhibits endocytosis. Consequently, acute block of endocytosis prevents repair of diffuse, but not of focal injury. In contrast, a chronic block in endocytosis depletes cells of early endosomes and inhibits repair of focal injury. This study finds that both focal and diffuse PM injury activate Ca2+ -triggered exocytosis of early endosomes. The use of markers including endocytosed cargo, Rab5, Rab11, and VAMP3, all reveal injury-triggered exocytosis of early endosomes. Inhibiting Rab5 prevents injury-triggered early endosome exocytosis and phenocopies the failed PM repair of cells chronically depleted of early endosomes. These results identify early endosomes as a Ca2+ -regulated exocytic compartment, and uncover the requirement of their dual functions - endocytosis and regulated exocytosis, to differentially support PM repair based on the nature of the injury.
Collapse
Affiliation(s)
- Daniel C. Bittel
- Center for Genetic Medicine ResearchChildren's National Research Institute7144 13th Pl NWWashington, DC20012USA
| | - Jyoti K. Jaiswal
- Center for Genetic Medicine ResearchChildren's National Research Institute7144 13th Pl NWWashington, DC20012USA
- Department of Genomics and Precision MedicineGeorge Washington University School of Medicine and Health SciencesWashington, DC20012USA
| |
Collapse
|
48
|
Liu F, Austin TR, Schrack JA, Chen J, Walston J, Mathias RA, Grams M, Odden MC, Newman A, Psaty BM, Ramonfaur D, Shah AM, Windham BG, Coresh J, Walker KA. Late-life plasma proteins associated with prevalent and incident frailty: A proteomic analysis. Aging Cell 2023; 22:e13975. [PMID: 37697678 PMCID: PMC10652348 DOI: 10.1111/acel.13975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 08/06/2023] [Accepted: 08/16/2023] [Indexed: 09/13/2023] Open
Abstract
Proteomic approaches have unique advantages in the identification of biological pathways that influence physical frailty, a multifactorial geriatric syndrome predictive of adverse health outcomes in older adults. To date, proteomic studies of frailty are scarce, and few evaluated prefrailty as a separate state or examined predictors of incident frailty. Using plasma proteins measured by 4955 SOMAmers in the Atherosclerosis Risk in Community study, we identified 134 and 179 proteins cross-sectionally associated with prefrailty and frailty, respectively, after Bonferroni correction (p < 1 × 10-5 ) among 3838 older adults aged ≥65 years, adjusting for demographic and physiologic factors and chronic diseases. Among them, 23 (17%) and 82 (46%) were replicated in the Cardiovascular Health Study using the same models (FDR p < 0.05). Notably, higher odds of prefrailty and frailty were observed with higher levels of growth differentiation factor 15 (GDF15; pprefrailty = 1 × 10-15 , pfrailty = 2 × 10-19 ), transgelin (TAGLN; pprefrailty = 2 × 10-12 , pfrailty = 6 × 10-22 ), and insulin-like growth factor-binding protein 2 (IGFBP2; pprefrailty = 5 × 10-15 , pfrailty = 1 × 10-15 ) and with a lower level of growth hormone receptor (GHR, pprefrailty = 3 × 10-16 , pfrailty = 2 × 10-18 ). Longitudinally, we identified 4 proteins associated with incident frailty (p < 1 × 10-5 ). Higher levels of triggering receptor expressed on myeloid cells 1 (TREM1), TAGLN, and heart and adipocyte fatty-acid binding proteins predicted incident frailty. Differentially regulated proteins were enriched in pathways and upstream regulators related to lipid metabolism, angiogenesis, inflammation, and cell senescence. Our findings provide a set of plasma proteins and biological mechanisms that were dysregulated in both the prodromal and the clinical stage of frailty, offering new insights into frailty etiology and targets for intervention.
Collapse
Affiliation(s)
- Fangyu Liu
- Department of EpidemiologyJohns Hopkins Bloomberg School of Public HealthBaltimoreMarylandUSA
| | - Thomas R. Austin
- Department of EpidemiologyUniversity of WashingtonSeattleWashingtonUSA
| | - Jennifer A. Schrack
- Department of EpidemiologyJohns Hopkins Bloomberg School of Public HealthBaltimoreMarylandUSA
- Center on Aging and HealthJohns Hopkins UniversityBaltimoreMarylandUSA
| | - Jingsha Chen
- Department of EpidemiologyJohns Hopkins Bloomberg School of Public HealthBaltimoreMarylandUSA
| | - Jeremy Walston
- Department of MedicineJohns Hopkins UniversityBaltimoreMarylandUSA
| | - Rasika A. Mathias
- Department of EpidemiologyJohns Hopkins Bloomberg School of Public HealthBaltimoreMarylandUSA
- Department of MedicineJohns Hopkins UniversityBaltimoreMarylandUSA
| | - Morgan Grams
- Department of EpidemiologyJohns Hopkins Bloomberg School of Public HealthBaltimoreMarylandUSA
- Division of Precision MedicineNew York University Grossman School of MedicineNew YorkNew YorkUSA
| | - Michelle C. Odden
- Department of Epidemiology and Population HealthStanford University School of MedicineStanfordCaliforniaUSA
| | - Anne Newman
- Department of EpidemiologyUniversity of PittsburghPittsburghPennsylvaniaUSA
| | - Bruce M. Psaty
- Cardiovascular Health Research Unit, Departments of Medicine, Epidemiology, and Health Systems and Population HealthUniversity of WashingtonSeattleWashingtonUSA
| | - Diego Ramonfaur
- Brigham and Women's Hospital, Harvard Medical School, Cardiovascular MedicineBostonMassachusettsUSA
| | - Amil M. Shah
- Brigham and Women's Hospital, Harvard Medical School, Cardiovascular MedicineBostonMassachusettsUSA
| | - B. Gwen Windham
- Department of Medicine, MIND CenterUniversity of Mississippi Medical CenterJacksonMississippiUSA
| | - Josef Coresh
- Department of EpidemiologyJohns Hopkins Bloomberg School of Public HealthBaltimoreMarylandUSA
| | - Keenan A. Walker
- Laboratory of Behavioral NeuroscienceNational Institute on AgingBaltimoreMarylandUSA
| |
Collapse
|
49
|
Ali DG, Bahrani AA, El Khouli RH, Gold BT, Jiang Y, Zachariou V, Wilcock DM, Jicha GA. White matter hyperintensities influence distal cortical β-amyloid accumulation in default mode network pathways. Brain Behav 2023; 13:e3209. [PMID: 37534614 PMCID: PMC10570488 DOI: 10.1002/brb3.3209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 07/19/2023] [Accepted: 07/22/2023] [Indexed: 08/04/2023] Open
Abstract
BACKGROUND AND PURPOSE Cerebral small vessel disease (SVD) has been suggested to contribute to the pathogenesis of Alzheimer's disease (AD). Yet, the role of SVD in potentially contributing to AD pathology is unclear. The main objective of this study was to test the hypothesis that WMHs influence amyloid β (Aβ) levels within connected default mode network (DMN) tracts and cortical regions in cognitively unimpaired older adults. METHODS Regional standard uptake value ratios (SUVr) from Aβ-PET and white matter hyperintensity (WMH) volumes from three-dimensional magnetic resonance imaging FLAIR images were analyzed across a sample of 72 clinically unimpaired (mini-mental state examination ≥26), older adults (mean age 74.96 and standard deviation 8.13) from the Alzheimer's Disease Neuroimaging Initiative (ADNI3). The association of WMH volumes in major fiber tracts projecting from cortical DMN regions and Aβ-PET SUVr in the connected cortical DMN regions was analyzed using linear regression models adjusted for age, sex, ApoE, and total brain volumes. RESULTS The regression analyses demonstrate that increased WMH volumes in the superior longitudinal fasciculus were associated with increased regional SUVr in the inferior parietal lobule (p = .011). CONCLUSION The findings suggest that the relation between Aβ in parietal cortex is associated with SVD in downstream white matter (WM) pathways in preclinical AD. The biological relationships and interplay between Aβ and WM microstructure alterations that precede overt WMH development across the continuum of AD progression warrant further study.
Collapse
Affiliation(s)
- Doaa G. Ali
- Sanders‐Brown Center on Aging, College of MedicineUniversity of KentuckyLexingtonKentuckyUSA
- Department of Behavioral Science, College of MedicineUniversity of KentuckyLexingtonKentuckyUSA
| | - Ahmed A. Bahrani
- Sanders‐Brown Center on Aging, College of MedicineUniversity of KentuckyLexingtonKentuckyUSA
- Department of Neurology, College of MedicineUniversity of KentuckyLexingtonKentuckyUSA
| | - Riham H. El Khouli
- Department of Radiology, College of MedicineUniversity of KentuckyLexingtonKentuckyUSA
| | - Brian T. Gold
- Sanders‐Brown Center on Aging, College of MedicineUniversity of KentuckyLexingtonKentuckyUSA
- Department of Neuroscience, College of MedicineUniversity of KentuckyLexingtonKentuckyUSA
| | - Yang Jiang
- Sanders‐Brown Center on Aging, College of MedicineUniversity of KentuckyLexingtonKentuckyUSA
- Department of Behavioral Science, College of MedicineUniversity of KentuckyLexingtonKentuckyUSA
| | - Valentinos Zachariou
- Department of Neuroscience, College of MedicineUniversity of KentuckyLexingtonKentuckyUSA
| | - Donna M. Wilcock
- Sanders‐Brown Center on Aging, College of MedicineUniversity of KentuckyLexingtonKentuckyUSA
- Department of Physiology, College of MedicineUniversity of KentuckyLexingtonKentuckyUSA
| | - Gregory A. Jicha
- Sanders‐Brown Center on Aging, College of MedicineUniversity of KentuckyLexingtonKentuckyUSA
- Department of Behavioral Science, College of MedicineUniversity of KentuckyLexingtonKentuckyUSA
- Department of Neurology, College of MedicineUniversity of KentuckyLexingtonKentuckyUSA
| |
Collapse
|
50
|
Gandy S. Open peer commentary on "Prescribing anti-amyloid immunotherapies to treat Alzheimer's disease: Fully informing patient decisions". Alzheimers Dement (N Y) 2023; 9:e12437. [PMID: 38023619 PMCID: PMC10661216 DOI: 10.1002/trc2.12437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 10/30/2023] [Indexed: 12/01/2023]
Affiliation(s)
- Sam Gandy
- Department of Psychiatry and the NIA‐Designated Mount Sinai Alzheimer's Disease Research Center, and Department of Neurology and Mount Sinai Health System Center for Cognitive HealthIcahn School of Medicine at Mount SinaiNew YorkNew YorkUSA
- James J. Peters VA Medical CenterBronxNew YorkUSA
| |
Collapse
|