Evidence map›Paper›PMID 40606490›Full record

ArticleAging brain2025

Nigrostriatal dopaminergic neurotransmission and resilience to peripheral systemic risk factors for gait slowing upon transition to uneven surfaces in older adult.

Lana M Chahine, Andrea Rosso, Ian Troidl, Mary Ganguli, Anne Newman, Steven Cummings, Stephanie Studenski, Brian Lopresti, Sarah Royse, Theodore Huppert and 4 more

Abstract read
In one paragraph

Article in Aging brain, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

  1. Article
  2. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

14 authors.

Lana M ChahineDepartment of Neurology, School of Medicine, University of Pittsburgh, Pittsburgh, PA, USA.
Andrea RossoDepartment of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA.
Ian TroidlDepartment of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA.
Mary GanguliDepartment of Neurology, School of Medicine, University of Pittsburgh, Pittsburgh, PA, USA.
Anne NewmanDepartment of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA.
Steven CummingsSan Francisco Coordinating Center, California Pacific Medical Center Research Institute, San Francisco, CA, USA.
Stephanie StudenskiDivision of Geriatric Medicine, University of Pittsburgh School of Medicine, PA, USA.
Brian LoprestiDepartment of Radiology, University of Pittsburgh, USA.
Sarah RoyseDepartment of Radiology, University of Pittsburgh, USA.
Theodore HuppertDepartment of Electrical and Computer Engineering, University of Pittsburgh, Pittsburgh, USA.
Mark RedfernDepartment of Bioengineering, Swanson School of Engineering, University of Pittsburgh, USA.
Patrick J SpartoDepartment of Physical Therapy, School of Health and Rehabilitation Sciences, University of Pittsburgh, USA.
Nico I BohnenDepartment of Radiology, University of Michigan, Ann Arbor, MI, USA.
Caterina RosanoDepartment of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA.

Funding

Study of Muscle, Mobility and Aging: SOMMA2R01AG059416 · NIA · CALIFORNIA PACIFIC MED CTR RES INSTITUTE · PI STEVEN RON CUMMINGS, Peggy Mannen Cawthon · 2018 to 2026
$70.3M
Wake Forest Claude D. Pepper OAIC - RenewalP30AG021332 · NIA · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI Denise Kathryn Houston · 2002 to 2026
$36.4M
VARIABILITY, STABILITY & SMOOTHNESS OF WALKINGP30AG024827 · NIA · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI Caterina Rosano · 2004 to 2026
$28.6M
Mild Cognitive Impairment: A Prospective Community StudyR37AG023651 · NIA · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI Carmen Andreescu, MARY GANGULI · 2021 to 2026
$18.2M
Neurobiological drivers of mobility resilience: the dopaminergic systemU01AG061393 · NIA · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI BOHNEN, NICOLAAS IDA, ROSANO, CATERINA · 2018 to 2022
$6.2M
Neural and Energetic Drivers of Performance and Perceived Fatigability in Older AdultsR01AG075025 · NIA · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI ROSANO, CATERINA · 2022 to 2025
$2.5M
NIA NIH HHS P30 AG021332NIA NIH HHS P30 AG024827NIA NIH HHS R01 AG059416NIA NIH HHS R01 AG075025NIA NIH HHS R37 AG023651NIA NIH HHS U01 AG061393
6 · The paper itself

Abstract

Identifying mechanisms that compensate for slow gait speed in older adults is crucial. Dopaminergic neurotransmission curbs deleterious associations of cerebrovascular disease with gait, but whether it compensates for peripheral systemic risk factors (PSRF) for gait slowing has not been studied. In this cross-sectional study of community-dwelling older adults, we examined the relationship between nigrostriatal dopaminergic terminal integrity and gait speed in individuals with and without ≥ 1 PSRF for gait slowing: obesity, joint pain, or reduced muscle strength. The primary outcome was gait speed cost (%GSC) on transition from even to uneven surface. Participants underwent dopaminergic imaging with dihydrotetrabenazine [

Indexed as

DopamineGait slowingResilience

Identifiers

PMID40606490
PMCPMC12221426

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.