apocrine


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Related to apocrine: holocrine, apocrine carcinoma, Apocrine sweat glands

apocrine

 [ap´o-krin]
denoting that type of glandular secretion in which the secretory products become concentrated at the free end of the secreting cell and are thrown off, along with the portion of the cell where they have accumulated, as in the mammary gland. See also holocrine and merocrine.

ap·o·crine

(ap'ō-krin), Its definition notwithstanding, the etymology of this word is unrelated to apex.
Denoting a mechanism of glandular secretion in which the apical portion of secretory cells is shed and incorporated into the secretion.
See also: apocrine gland.
[G. apo-krinō, to separate]

apocrine

/apo·crine/ (ap´o-krin) exhibiting that type of glandular secretion in which the free end of the secreting cell is cast off along with the secretory products accumulated therein (e.g., mammary and sweat glands).

apocrine

(ăp′ə-krĭn, -krīn′, -krēn′)
adj.
Relating to a type of glandular secretion in which the apical portion of the secreting cell is released along with the secretory products.

apocrine

Referring to a type of exocrine secretion, as seen in aprocrine cells in the mammary gland, where lipid-rich droplets are enveloped by the apical plasma membrane.

ap·o·crine

(ap'ō-krin)
Denoting a mechanism of glandular secretion in which the apical portion of secretory cells is shed and incorporated into the secretion.
See also: apocrine gland
[G. apo-krinō, to separate]

apocrine

Pertaining to glands that give off some of their intracellular contents as part of their secretion.

gland

secretory organ
  • adrenal gland endocrine gland located at superior pole of each kidney, secreting catecholamines (from medulla) and adrenocorticoid hormones (from cortex)

  • apocrine gland axilla and genital skin glands, whose secretion is formed by degradation of secretory cells

  • eccrine gland gland producing a simple fluid secretion, e.g. sweat glands

  • endocrine gland gland whose secretions are absorbed directly into blood, e.g. pancreas islet cells

  • exocrine gland gland whose secretion reaches a body surface via ducts

  • holocrine gland gland whose secretion is formed by cell degradation

  • lymph gland see nodes lymph

  • parathyroid gland parathormone-secreting endocrine glands, located within poles of the thyroid

  • pituitary gland see pituitary

  • sebaceous gland sebum-secreting holocrine gland within the hair follicle

  • thyroid gland see thyroid

apocrine

denoting that type of glandular mechanism in which the secretory products become concentrated at the free end of the secreting cell and are thrown off along with a portion of the cytoplasm, as in the mammary gland; cf. holocrine and merocrine.

apocrine cystic calcinosis
see calcinosis circumscripta.
apocrine cystic dilatation
a relatively common finding in dog skin; may be associated with hyperplasia of glandular epithelium or secondary to duct obstruction.
apocrine cystomatosis
see apocrine gland cyst (below).
apocrine gland cyst
cystic hyperplasia of apocrine sweat glands; common in dogs. Often multiple and called apocrine cystomatosis.
apocrine sweat gland
the most abundant type of sweat gland in domestic animals and part of the hair follicle complex; found in haired skin and specialized regions such as the anal sacs. Under sympathetic nervous control and produce sweat by a merocrine mechanism (despite the name) which, in normal quantities, contributes to a protective film on the skin. Specialized apocrine sweat glands are located in the external ear canal and eyelids. Inflammation is called hidradenitis.
apocrine tumors
cystic or papillary adenomas and papillary or tubular carcinomas occur, particularly in dogs and cats. See also anal sacs tumor.
References in periodicals archive ?
Epithelial cells of the posterior midgut are each characterized by the presence of a well-developed striated border relative to the digestive cells of the anterior midgut, which suggests a role of nutrient absorption; moreover the occurrence of apocrine secretion or release of cytoplasmic vesicles into the lumen was not observed.
Pleomorphic lobular carcinoma of the breast: an aggressive tumor showing apocrine differentiation.
Sweat is manufactured by two different glands--eccrine and apocrine.
Development in the secretory function of apoeccrine (found in the axilla) and apocrine (found in the axilla and pubis regions) sweat glands during puberty could also partially explain the variation in sweat rate.
Physiological apocrine secretion gives rise to an abundant duct granular content devoid of parasites when the secretory cells are not invaded (Fig.
Today, 90 percent of women have this disorder, manifested by epithelial hyperplasia, apocrine gland metaplasia, fluid-filled cysts, and fibrosis.
IN humans pheromones are thought to be secreted from the apocrine sweat glands found in the groin and armpits.
1979), in an experimental study in rats, reported that exposure to fiberglass and styrene induced an alteration of the cells of the bronchiolar epithelium with a predominance of apocrine cells.
2-positive cells" without nodal involvement was detected microscopically in one patient (9-12) and infiltrative apocrine adenocarcinoma was discovered not only in the disease-related nodular mass but also in the sentinel lymph node in another patient.
Humans may very well be predisposed to eroticising feet because feet have apocrine sweat glands, the same type of pheromone-producing sweat glands shared by armpits and the genital region.
The lesions are primarily found along the "milk line," where the sites of involvement are anywhere apocrine glands are found, including the axillae, breast, and perianal area.
PHEROMONES are hormonal substances released into the air from the apocrine sweat glands in the armpits and groin.