Alpha-parvin

Alpha-parvin (PARVA) is a 372-amino acid cytoskeletal protein that regulates sarcomere organization, smooth muscle contraction, and actin cytoskeleton dynamics (UniProt: Q9NVD7). It functions within the ILK-PINCH-PARVIN complex to promote F-actin bundling, supporting processes including cell adhesion, migration, polarity, and lamellipodia formation. The protein also plays roles in cardiovascular development and sprouting angiogenesis.

While UniProt records no primary disease associations for alpha-parvin, the protein is involved in fundamental cytoskeletal and adhesion pathways relevant to neural cell biology. Its functions in actin organization and cell migration have potential relevance to neuronal morphology and connectivity.

Alpha-parvin is elevated in Alzheimer's disease brain tissue relative to age-matched controls (Chaparral AD proteomics). Quantitative analysis of post-mortem AD brain homogenates across four subcellular fractions (P2, P3, S2, S3) detected a mean increase of 0.99 log2-fold change, suggesting upregulation in the diseased state. This elevation may reflect altered cytoskeletal dynamics or compensatory responses to neurodegeneration in AD.