Dictionary > Lipofuscin

Lipofuscin

Definition
noun, plural: lipofuscins
(cell biology) Any of the minute, yellow-brown, lipogenic pigment granules that accumulate in the cytoplasm of senile animal and human cells
Supplement
Lipofuscins are lipogenic pigments found chiefly in the smooth muscle cells, heart muscle cells, macrophages, parenchyma cells, interstitial cells, nerve cells, and ganglion cells. Their presence is associated with lysosomal degradation of the cell membrane. And high concentration of lipofuscins is noted in aged individuals. Organs that are going through senile atrophy have high levels of lipofuscins, which render the tissues brown.
Word origin: Greek lĂ­pos (fat) + Latin fusc(us) (dark, tawny)
Synonym(s):

  • abnutzen pigment
  • hemofuscin
  • wear-and-tear pigment
  • pigment of brown atrophy

Mentioned in:

  • Cell inclusion


    You will also like...

    running freshwater community
    Running Water Freshwater Community Factors

    This tutorial noted some of the physical and chemical factors that provide the framework of a running water community in..

    Early Earth
    The Origins of Life

    This tutorial digs into the past to investigate the origins of life. The section is split into geological periods in the..

    Growth and Plant Hormones
    Growth and Plant Hormones

    Plants, like animals, produce hormones to regulate plant activities, including growth. They need these hormones to respo..

    Young plant growing from the soil.
    Soils

    Nutrients in the soil are essential to the proper growth of a land plant. This tutorial deals with the properties of soi..

    Nephrolepis exaltata
    Vascular Plants: Ferns and Relatives

    Ferns and their relatives are vascular plants, meaning they have xylem and phloem tissues. Because of the presence of va..

    Darwin's Finches - Natural Selection
    Darwin and Natural Selection

    This tutorial investigates the genetic diversity in more detail. It also delineates how certain alleles are favored over..