- NeuroMab™ Anti-Tau Antibody,Clone NR2946P (Cat#: NRP-0422-P1686)
- NeuroMab™ Anti-SEZ6 Antibody, Clone NR30P (Cat#: NRP-0422-P517)
- NeuroMab™ Anti-F-Spondin/SPON1 Antibody, Clone N24875P (CBP11839) (Cat#: NRZP-0822-ZP4740)
- NeuroMab™ Anti-pTau Antibody,Clone NR3595P (Cat#: NRP-0422-P1719)
- Mouse Anti-Human α-Synuclein Phospho (Tyr39) (CBP3706) (Cat#: NAB201250LS)
- NeuroMab™ Anti-CD20 Antibody,Clone NR3021P (Cat#: NRP-0422-P1230)
- NeuroMab™ Anti-Integrin αvβ8 BBB Shuttle Antibody,Clone NR2431P (Cat#: NRZP-1222-ZP1218)
- NeuroMab™ Anti-Tau Antibody,Clone NR2944P (Cat#: NRP-0422-P1684)
- NeuroMab™ Mouse Anti-LRP1 Monoclonal Antibody (CBP3363) (Cat#: NAB-0720-Z6479)
- NeuroMab™ Anti-TREM2 Antibody, Clone NR65P (Cat#: NRP-0422-P792)
- Human Brain Astroblastoma U-87 MG (Cat#: NCL2110P117)
- Rat Muller Cell (Cat#: NCL2110P040)
- Mouse Microglia Cell Line BV-2, Immortalized (Cat#: NCL2110P153)
- Mouse Microglia N9 (Cat#: NCL2110P073)
- Green Fluorescent Tau SH-SY5Y cell Line (Cat#: NCL2110P219)
- Rat Immortalized Retinal Muller Cell Line rMC-1 (Cat#: NCL-2106-S93)
- C57 Brain Cortex Neurons [Mouse] (Cat#: NCC20-9PZ48)
- Green Fluorescent Alpha-synuclein SH-SY5Y Cell Line (Cat#: NCL2110P209)
- iNeu™ Human Midbrain Dopaminergic Neurons (Cat#: NCL-21P6-003)
- Mouse Retinal Ganglion Cells (Cat#: NCL2110P145)
- Human Poly ADP ribose polymerase,PARP Assay Kit (Cat#: NRZP-1122-ZP62)
- Alpha Synuclein Aggregation Kit (Cat#: NRZP-1122-ZP15)
- Beta Amyloid (1-40), Aggregation Kit, TTF Assay (Cat#: NRZP-0323-ZP199)
- Amyloid beta 1-42 Kit (Cat#: NRP-0322-P2170)
- Alpha-Synuclein Aggregation Assay Kit (Cat#: NRZP-1122-ZP37)
- Human GFAP ELISA Kit [Colorimetric] (Cat#: NPP2011ZP383)
- Human Tau Aggregation Kit (Cat#: NRP-0322-P2173)
- Beta Amyloid (1-42), Aggregation Kit (Cat#: NRZP-0323-ZP200)
- pAAV-syn-FLEX-jGCaMP8s-WPRE (Cat#: NTA-2106-P066)
- pAAV-syn-jGCaMP8s-WPRE (Cat#: NTA-2106-P063)
- pAAV-syn-FLEX-jGCaMP8f-WPRE (Cat#: NTA-2106-P064)
- AAV2 Full Capsids, Reference Standards (Cat#: NTC2101070CR)
- rAAV-E-SARE-Cre-ERT2-PEST-WPRE-hGH polyA (Cat#: NTA-2010-TT342)
- Dextran-FITC (Cat#: NTA-2011-ZP110)
- rAAV-CAG-DIO-G-Flamp1 (Cat#: NRZP-0722-ZP719)
- AAV-mDLX-CRE-tdTomato (Cat#: NRZP-0622-ZP721)
- Dextran, Cy5 Labeled, 2000 kDa (Cat#: NRZP-0722-ZP22)
- AAV2/9-hEF1a-DIO-mCherry-P2A-TetTox-WPRE-pA (Cat#: NTA-2012-ZP268)
- Human apolipoprotein E (APOE) (NM_000041) ORF clone, Untagged (Cat#: NEP-0421-R0232)
- Human huntingtin (HTT) (NM_002111) ORF clone, Myc-DDK Tagged (Cat#: NEP-0521-R0497)
- Human superoxide dismutase 1, soluble (SOD1) (NM_000454) ORF clone, TurboGFP Tagged (Cat#: NEP-0521-R0748)
- Tau Antisense Oligonucleotide (IONIS-MAPTRx) (Cat#: NV-2106-P29)
- Lenti of Human TAR DNA binding protein (TARDBP) (NM_007375) ORF clone, mGFP Tagged (Cat#: NEP-0521-R0832)
- Human huntingtin-associated protein 1 (HAP1) transcript variant 2 (NM_177977) ORF clone, Myc-DDK Tagged (Cat#: NEP-0521-R0676)
- ABCA1 Antisense Oligonucleotide (AK311445) (Cat#: NV-2106-P27)
- Human superoxide dismutase 3, extracellular (SOD3) (NM_003102) ORF clone, Untagged (Cat#: NEP-0521-R0808)
- Human presenilin 1 (PSEN1), transcript variant 2 (NM_007318) ORF clone, TurboGFP Tagged (Cat#: NEP-0421-R0140)
- Mouse Parkinson disease (autosomal recessive, early onset) 7 (Park7) (NM_020569) clone, Untagged (Cat#: NEP-0621-R0133)
- NeuroBiologics™ Rat Cerebrospinal Fluid (Cat#: NRZP-0822-ZP496)
- NeuroBiologics™ Mouse Cerebrospinal Fluid (Cat#: NRZP-0822-ZP497)
- NeuroBiologics™ Human Cerebrospinal Fluid (Cat#: NRZP-0822-ZP491)
- NeuroBiologics™ Pig Cerebrospinal Fluid (Cat#: NRZP-0822-ZP498)
- NeuroBiologics™ Monkey Cerebrospinal Fluid (Cat#: NRZP-0822-ZP495)
- NeuroPro™ Anti-GDNF BBB Shuttle Protein, HIRMab-GDNF (Cat#: NRZP-0423-ZP509)
- NeuroPro™ Anti-ASA BBB Shuttle Protein, HIRMab-ASA (Cat#: NRZP-0423-ZP504)
- NeuroPro™ Anti-SGSH BBB Shuttle Protein, HIRMab-SGSH (Cat#: NRZP-0423-ZP505)
- NeuroPro™ Anti-TNFR BBB Shuttle Protein, HIRMab-TNFR (Cat#: NRZP-0423-ZP510)
- NeuroPro™ Anti-IDS BBB Shuttle Protein, HIRMab-IDS (Cat#: NRZP-0423-ZP503)
- NeuroPro™ Anti-IDUA BBB Shuttle Protein, HIRMab-IDUA (Cat#: NRZP-0423-ZP502)
- NeuroPro™ Anti-IDUA BBB Shuttle Protein, cTfRMAb-IDUA (Cat#: NRZP-0423-ZP498)
- NeuroPro™ Anti-TNFR BBB Shuttle Protein, cTfRMAb-TNFR (Cat#: NRZP-0423-ZP501)
- NeuroPro™ Anti-NAGLU BBB Shuttle Protein, HIRMab-NAGLU (Cat#: NRZP-0423-ZP506)
- NeuroPro™ Anti-PON1 BBB Shuttle Protein, HIRMab-PON1 (Cat#: NRZP-0423-ZP507)
Neurophysiological and Brain Structural Markers of Cognitive Frailty Differ from Alzheimer's Disease
With increasing life span and prevalence of dementia, it is important to understand the mechanisms of cognitive aging. Here, we focus on a subgroup of the population we term “cognitively frail,” defined by reduced cognitive function in the absence of subjective memory complaints, or a clinical diagnosis of dementia. Cognitive frailty is distinct from cognitive impairment caused by physical frailty. It has been proposed to be a precursor to Alzheimer's disease, but may alternatively represent one end of a nonpathologic spectrum of cognitive aging. We test these hypotheses in humans of both sexes, by comparing the structural and neurophysiological properties of a community-based cohort of cognitive frail adults, to people presenting clinically with diagnoses of Alzheimer's disease or mild cognitive impairment, and community-based cognitively typical older adults. Cognitive performance of the cognitively frail was similar to those with mild cognitive impairment. We used a novel cross-modal paired-associates task that presented images followed by sounds, to induce physiological responses of novelty and associative mismatch, recorded by EEG/MEG. Both controls and cognitively frail showed stronger mismatch responses and larger temporal gray matter volume, compared with people with mild cognitive impairment and Alzheimer's disease. Our results suggest that community-based cognitively frail represents a spectrum of normal aging rather than incipient Alzheimer's disease, despite similar cognitive function. Lower lifelong cognitive reserve, hearing impairment, and cardiovascular comorbidities might contribute to the etiology of the cognitive frailty. Critically, community-based cohorts of older adults with low cognitive performance should not be interpreted as representing undiagnosed Alzheimer's disease.
Reference
Kocagoncu, E., Nesbitt, D., Emery, T., Hughes, L., Henson, R. N., & Rowe, J. B. (2022). Neurophysiological and brain structural markers of cognitive frailty differ from Alzheimer's disease. Journal of Neuroscience.