exocytosis


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exocytosis

 [ek″so-si-to´sis]
1. the discharge from a cell of particles that are too large to diffuse through the wall; the opposite of endocytosis.
2. the aggregation of migrating leukocytes in the epidermis as part of the inflammatory response.

ex·o·cy·to·sis

(ek'sō-sī-to'sis),
1. The appearance of migrating inflammatory cells in the epidermis.
2. The process whereby secretory granules or droplets are released from a cell; the membrane around the granule fuses with the cell membrane, which ruptures, and the secretion is discharged. Synonym(s): emeiocytosis, emiocytosis Compare: endocytosis.
[exo- + G. kytos, cell, + -osis, condition]

exocytosis

(ĕk′sō-sī-tō′sĭs)
n. pl. exocyto·ses (-sēz′)
A process of cellular secretion or excretion in which substances contained in vesicles are discharged from the cell by fusion of the vesicular membrane with the outer cell membrane.

ex′o·cy·tose′ (-tōs′) v.
ex′o·cy·tot′ic (-tŏt′ĭk) adj.

ex·o·cy·to·sis

(eksō-sī-tōsis)
1. The appearance of migrating inflammatory cells in the epidermis.
2. The process whereby secretory granules or droplets are released from a cell; the membrane around the granule fuses with the cell membrane, which ruptures, and the secretion is discharged.
Synonym(s): emeiocytosis, emiocytosis.
Compare: endocytosis
[exo- + G. kytos, cell, + -osis, condition]

exocytosis

The movement of peptides or proteins out of a cell into the extracellular fluid, in tiny membranous vesicles that pass through the plasma membrane.

exocytosis

an active process in which vesicles containing excretory or secretory materials are actively carried to the periphery of the cell, and released to the outside when the vesicle membrane fuses with the cell membrane. Compare ENDOCYTOSIS. See PHAGOCYTOSIS, PINOCYTOSIS.

ex·o·cy·to·sis

(eksō-sī-tōsis)
Appearance of migrating inflammatory cells in the epidermis.
[exo- + G. kytos, cell, + -osis, condition]
References in periodicals archive ?
Histologic finding of irritant CD lesions shows moderate spongiosis, intracellular edema, exocytosis, progression of inflammatory infiltrate into the epidermis, and a reduced number of CD4+ Langerhans cells in the epidermis.
(2016) Actin- and myosin-dependent vesicle loading of presynaptic docking sites prior to exocytosis. Neuron 91, 808-823.
The main mechanisms regulating hormone exocytosis are shared with exocytosis of synaptic vesicles underlying neurotransmitter release in neurons [1, 5].
Betbeder, "Characterization of endocytosis and exocytosis of cationic nanoparticles in airway epithelium cells," Nanotechnology, vol.
There was no analogous significant inhibitory action of SP; nevertheless, the tendency of this neuropeptide to reduce OMV-potentiated granule exocytosis was noticed.
It occurs due to a mutation in the adenosine triphosphate binding cassette A12 (ABCA12) gene, which is responsible for the exocytosis of lipid-containing lamellar granules, which control the process of desquamation (6).
Several cellular mechanisms have been proposed as being responsible for bleaching, and include exocytosis of the symbiont, host cell degradation, in situ degradation of the symbiont, host cell detachment, host cell apoptosis, and host cell necrosis (Weis et al., 2008).
Exocytosis was prominent, and intraepidermal red blood cells could be seen [Figure 1]c.
The histopathological examination showed hyperplastic squamous epithelium with intracellular oedema, exocytosis and focal ulceration.
Caption: Figure 2: Histopathological examination revealed hyperkeratosis, acanthosis, dilated papillary dermal vessels, loss of granular layer, supra-papillary thinning and a perivascular chronic inflammatory infiltrate in the dermis along with few dermal neutrophils, consistent with psoriasis vulgaris without interface changes, exocytosis of lymphocytes, no eosinophils or plasma cells could be observed in the dermis
The presynaptic membrane [Ca.sup.2+] channel may further mediate [Ca.sup.2+] influx, and then actualize synaptic vesicle exocytosis and neurotransmitter release [13].