endoplasmic reticulum

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Related to endoplasmic reticulum: Smooth endoplasmic reticulum


 [rĕ-tik´u-lum] (L.)
1. a small network, especially a protoplasmic network in cells.
agranular reticulum smooth-surfaced endoplasmic reticulum.
endoplasmic reticulum an ultramicroscopic organelle of nearly all higher plant and animal cells, consisting of a system of membrane-bound cavities in the cytoplasm, occurring in two types: granular or rough-surfaced, bearing large numbers of ribosomes on its outer surface, and agranular or smooth-surfaced.
granular reticulum rough-surfaced endoplasmic reticulum.
sarcoplasmic reticulum a form of agranular reticulum in the sarcoplasm of striated muscle, comprising a system of smooth-surfaced tubules surrounding each myofibril.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

en·do·plas·mic re·tic·u·lum (ER),

the network of cytoplasmic tubules or flattened sacs (cisternae) with (rough ER) or without (smooth ER) ribosomes on the surface of their membranes in eukaryotes.
Synonym(s): endomembrane system
Farlex Partner Medical Dictionary © Farlex 2012

endoplasmic reticulum

A membrane network within the cytoplasm of cells involved in the synthesis, modification, and transport of cellular materials.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

en·do·plas·mic re·tic·u·lum

(ER) (en'dō-plas'mik rĕ-tik'yū-lŭm)
The network of cytoplasmic tubules or flattened sacs (cisternae) with (rough ER) or without (smooth ER) ribosomes on the surface of their membranes in eukaryotes.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

endoplasmic reticulum

A highly convoluted membrane system within cells to which RIBOSOMES attach themselves for protein synthesis. The endoplasmic reticulum is also the site of many other cell metabolic reactions.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

endoplasmic reticulum (ER)

a series of interconnected, flattened cavities called cysternae, lined with a thin membrane about 4 nm thick which is continuous with the NUCLEAR MEMBRANE. It can be covered with RIBOSOMES, when it is referred to as rough ER, or ribosomes may be absent in which case the ER is known as smooth ER and is associated with lipid synthesis. See GOLGI APPARATUS.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

en·do·plas·mic re·tic·u·lum

(ER) (en'dō-plas'mik rĕ-tik'yū-lŭm)
The network of cytoplasmic tubules or flattened sacs with or without ribosomes on the surface of their membranes.
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
Endoplasmic reticulum stress links obesity, insulin action, and type 2 diabetes.
The adaptive endoplasmic reticulum stress response to lipotoxicity in progressive human nonalcoholic fatty liver disease.
3.The cortical granules of control oocyte (a), GV stage oocyte after IVM(b), vitrified-thawed GV oocyte after IVM(c), Vitrified-thawed GV oocyte before IVM (d), CG = cortical granules, M = mitochondria, SER = smooth endoplasmic reticulum, m = membrain, V = vacuole
John et al., "Genetic association and functional role of Crohn disease risk alleles involved in microbial sensing, autophagy, and endoplasmic reticulum (ER) stress," Autophagy, vol.
(a, b) GDF15 expression in Hep G2 hepatocytes over the course of 48 hours stimulation with interleukin 1b (a) or the endoplasmic reticulum stressor tunicamycin (b) determined by qPCR and normalised to GAPDH.
Inagi, "Endoplasmic reticulum stress in the kidney as a novel mediator of kidney injury," Nephron Experimental Nephrology, vol.
Weiss, "Excessive endoplasmic reticulum stress correlates with impaired mitochondrial dynamics, mitophagy and apoptosis, in liver and adipose tissue, but not in muscles in EMS horses," International Journal of Molecular Sciences, vol.
AL-Attas, "GLP-1 analogue, Liraglutide protects human umbilical vein endothelial cells against high glucose induced endoplasmic reticulum stress," Regulatory Peptides, vol.
Lee, "The ER chaperone and signaling regulator GRP78/BiP as a monitor of endoplasmic reticulum stress," Methods, vol.
Pillai, "Altered expression of endoplasmic reticulum stress-related genes in the middle frontal cortex of subjects with autism spectrum disorder," Molecular Neuropsychiatry, vol.
Rough endoplasmic reticulum is not evenly distributed, only limited and appears as relatively short strand located close to the nucleus and among groups of mitochondria (Fig.

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