Prosaposin

There are 2 papers on prosaposin in aging research: 2 observational studies in people.

Biomarker

2 papers study it5 more mention it3 findings

See all 7

“decreased amounts of PGRN and PSAP proteins were detected even in immature neurofibrillary tangles”
Loss of Lysosomal Proteins Progranulin and Prosaposin Associated with Increased Neurofibrillary Tangle Development in Alzheimer DiseaseJournal of neuropathology and experimental neurology2021doi:10.1093/jnen/nlab056
  • Humans2

Upstream

2

GRNMUTATION

no changein humans1

1 study
  1. GRNMUTATION was not clearly linked with prosaposin in humans (frontotemporal dementia with GRN mutations).

    “while PSAP signal was preserved”

    Humansfrontotemporal dementia with GRN mutationsbrain

    Loss of Lysosomal Proteins Progranulin and Prosaposin Associated with Increased Neurofibrillary Tangle Development in Alzheimer Disease

    Journal of neuropathology and experimental neurology

More on GRNMUTATION

centenarians

upin humans1

1 study
  1. centenarians are linked with higher prosaposin in humans.

    “an elevation of the coenzyme Q10 binding protein Psap”

    Humans

    Increased oxidative stress and coenzyme Q10 deficiency in centenarians

    Journal of clinical biochemistry and nutrition

More on centenarians

Associations

1

Neurofibrillary tangle development

downin humans1

1 study
  1. Neurofibrillary tangle development is associated with prosaposin in humans (immature neurofibrillary tangles).

    “decreased amounts of PGRN and PSAP proteins were detected even in immature neurofibrillary tangles”

    Humansimmature neurofibrillary tanglesbrain

    Loss of Lysosomal Proteins Progranulin and Prosaposin Associated with Increased Neurofibrillary Tangle Development in Alzheimer Disease

    Journal of neuropathology and experimental neurology

Latest

Nov 2025: 0Dec 2025: 1Jan 2026: 0Feb 2026: 0Mar 2026: 0Apr 2026: 0May 2026: 0Jun 2026: 1Jul 2026: 0Aug 2026: 0Sep 2026: 0Oct 2026: 02 papers in 12 months