parthanatos

P3A1R1T1H4A1N1A1T1O1S1

noun

A form of apoptosis associated with PARP.

Scrabble 16

Meanings

nounparthanatos (uncountable)
  1. uncountablemedicineA form of apoptosis associated with PARP.

    Also, the lack of knowledge of mechanisms of calpain activation in parthanatos makes it difficult to identify calpain as PAR-dependent mediators of AIF release.

    2008, Gary E. Gibson, Mitochondria and Oxidative Stress in Neurodegenerative Disorders
    2 more examples

    Our results suggest that excessive activation of PARP-1 leads to an intrinsic cell death program, which we designate as parthanatos to distinguish from necrosis and apoptosis.

    2006, Seong-Woon Yu, “Apoptosis-inducing factor mediates poly(ADP-ribose) (PAR) polymer-induced cell death”, in PNAS, volume 103, number 48

    The biochemical features of parthanatos are distinct from classically defined pathways of cell death, and include rapid PARP-1 activation, early PAR accumulation, mitochondrial depolarization, early nuclear AIF translocation, loss of cellular NAD and ATP, and late caspase activation.

    2010, Denson G. Fujikawa, Acute Neuronal Injury: The Role of Excitotoxic Programmed Cell Death Mechanisms

Origin

Blend of PARP + Thanatos (“Greek personification of death”).

Full word history & related roots →
Cite this entry
APA

parthanatos. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/parthanatos

MLA

“parthanatos.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/parthanatos. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “parthanatos,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/parthanatos.

Source: parthanatos on Wiktionary, CC BY-SA 4.0.