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Longman Dictionary of Contemporary English
▪ The fall in basal acid secretion found may not necessarily be due to the eradication of H pylori.
▪ There has been debate as to whether this should be calculated with or without subtraction of basal acid secretion.
▪ We have also shown for the first time such treatment also decreases basal gastric acid secretion significantly.
▪ Cyclical changes in H pylori infection may cause the variations in basal acid secretion that are seen in duodenal ulcer disease.
▪ The quantitative effects of the drugs were related to the rate of fluid secretion or absorption.
▪ Both drugs significantly reduced fluid secretion or increased fluid absorption.
▪ In Brunssons's experiments, hexamethonium often turned fluid secretion into fluid absorption.
▪ The effect was more pronounced the lower the rate of fluid absorption or the higher the rate of fluid secretion.
▪ Cisapride does not affect gastric secretion either in animals or man.
▪ This increase in gastric secretion showed a positive correlation to the total number of cigarettes smoked.
▪ Children who are malnourished with chronic diarrhoea have defective gastric acid secretion.
▪ Over the years there have been many studies of the effects of smoking on gastric secretion.
▪ H pylori has variable effects on serum gastrin concentrations and gastric acid secretion.
▪ Alcoholic beverages with low ethanol content stimulate gastric acid secretion by additional mechanisms.
▪ For gastric acid secretion, basal serum gastrin was considered in addition to these three variables.
▪ This improvement results from more profound inhibition of gastric acid secretion.
▪ The relative importance of increased secretion and/or impaired catabolism of circulating triglyceride in causing diabetic lipaemia has yet to be determined.
▪ Thus H pylori infection combined with active ulceration may cause the increased basal acid secretion seen in duodenal ulcer disease.
▪ In eight of 26 animals a net fluid secretion was seen on days 6-9.
▪ In the whole gut of course, the reduction of this net sodium secretion by colonic salvage should be considered.
Pancreatic pseudocysts are localised collections of pancreatic secretions occurring as a result of pancreatic inflammation and ductal disruption.
▪ Neuropeptide Y has also been reported to increase substantially gastric acid and pancreatic exocrine secretion.
▪ In the case of pancreatic secretion, stimulation of bicarbonate but not protein output was observed.
▪ These fluctuations probably result from interaction between phasic gastroduodenal motility and intermittent pancreatic secretion of neutralising bicarbonate.
▪ Various animal studies have shown inhibition of pancreatic enzyme secretion by pancreatic proteases in the duodenum.
▪ Both are potent known inhibitors of pancreatic secretion.
▪ Intrajejunal administration of beer also stimulated acid secretion, although the response was less than that to intragastrically infused beet.
▪ There are conflicting reports of spontaneous and stimulated growth hormone secretion in childhood Crohn's disease.
▪ The failure of studies to show this clearly is probably related to the technical difficulties involved in measuring meal stimulated acid secretion.
▪ It also shows that the infection increases both basal and stimulated acid secretion.
▪ However, acid secretion in old subjects without atrophy was not different to that in young subjects, irrespective of H pylori status.
▪ In man and other species, there is accumulating evidence that gastrin stimulates acid secretion by releasing histamine.
▪ Using multiple linear regression analysis, gastritis with atrophy was the only factor that had an independent negative effect on acid secretion.
▪ Population studies of gastric acid secretion in children at risk from undernutrition are clearly not possible using conventional intubation techniques.
▪ Recent work has focused on the gastrin acid secretion feedback loop and identified a number of potential pathogenetic pathways.
▪ The belief that acid secretion declines with advancing age has been widespread.
▪ H pylori has variable effects on serum gastrin concentrations and gastric acid secretion.
▪ The gastric mucosa resists the corrosive effects of peptic hydrochloric acid secretion and noxious extrinsic agents.
▪ Experiments were therefore designed to try to show the existence of bicarbonate secretion by the normal human oesophagus.
▪ In experimental animals cholera toxin induces marked secretion of fluid and electrolytes.
▪ Substances with high osmolarity have been found to inhibit acid secretion.
▪ Studies in animals that live in hierarchies have shown that secretion of serotonin responds to changes in status.
▪ Almost all studies show that acid secretion remains at the same rate.
▪ This would show that acid secretion is of superior importance compated with H pylori.
▪ The exact reason why beverages with higher ethanol content do not stimulate acid secretion is also not known.
▪ In man and other species, there is accumulating evidence that gastrin stimulates acid secretion by releasing histamine.
▪ Beverages with higher alcohol content such as whisky and cognac did not stimulate acid secretion.
▪ However, a decline in pentagastrin stimulated gastric acid secretion with age was seen in those subjects with superficial gastritis also.
▪ After premedication with atropine intravenous ethanol failed to stimulate acid secretion.
▪ Further characterisation of the non-ethanolic component of beer and wine that stimulates acid and gastrin secretion needs to be carried out.
▪ This is because the very low concentrations of these substances present in beer failed to stimulate acid secretion.
▪ Early studies by Cooke showed that ethanol in concentrations of 1% to 20% did not stimulate gastric acid secretion.
▪ The disorder is caused by excessive secretion of certain hormones.
▪ In man and other species, there is accumulating evidence that gastrin stimulates acid secretion by releasing histamine.
▪ Non-parallel enzyme secretion has been shown in patients with normal pancreatic function under certain stimulatory conditions.
▪ Particular attention must be paid to gastrointestinal drainage tubes since pancreatic and small bowel secretions are rich in bicarbonate.
▪ The difference between mean rates of secretion of acid and pepsin in control subjects and patients with duodenal ulcer is about 190%.
▪ The principal immunoglobulin found in secretions is IgA with only trace amounts of IgG present.
▪ Then the hunter does not waste its time on something it can not eat, and the hunted saves its secretions.
▪ There are conflicting reports of spontaneous and stimulated growth hormone secretion in childhood Crohn's disease.
▪ This could also explain the difference in biliary lipid secretion rate between the two groups.
The Collaborative International Dictionary

Secretion \Se*cre"tion\, n. [L. secretio: cf. F. s['e]cr['e]tion.]

  1. The act of secreting or concealing; as, the secretion of dutiable goods.

  2. (Physiol.) The act of secreting; the process by which material is separated from the blood through the agency of the cells of the various glands and elaborated by the cells into new substances so as to form the various secretions, as the saliva, bile, and other digestive fluids. The process varies in the different glands, and hence are formed the various secretions.

  3. (Physiol.) Any substance or fluid secreted, or elaborated and emitted, as the gastric juice.

Douglas Harper's Etymology Dictionary

1640s, "act of secreting;" 1732, "that which is secreted," from French sécrétion, from Latin secretionem (nominative secretio) "a dividing, separation," noun of action from past participle stem of secernere "to separate, set apart" (see secret (n.)).


Etymology 1 n. 1 (label en countable) any substance that is secreted by an organism 2 (label en uncountable) the act of secreting a substance, especially from a gland Etymology 2

n. the act of hiding something

  1. n. the organic process of synthesizing and releasing some substance [syn: secernment]

  2. a functionally specialized substance (especially one that is not a waste) released from a gland or cell


Secretion is the movement of material from one point to another chemicals, or a secreted chemical substance from a cell or gland. In contrast to excretion, it is the removal of certain substances or waste products. The classical mechanism of cell secretion is via secretory portals at the cell plasma membrane called porosomes. Porosomes are permanent cup-shaped lipoprotein structure at the cell plasma membrane, where secretory vesicles transiently dock and fuse to release intra-vesicular contents from the cell.

Secretion in bacterial species means the transport or translocation of effector molecules for example: proteins, enzymes or toxins (such as cholera toxin in pathogenic bacteria for example Vibrio cholerae) from across the interior ( cytoplasm or cytosol) of a bacterial cell to its exterior. Secretion is a very important mechanism in bacterial functioning and operation in their natural surrounding environment for adaptation and survival.

Usage examples of "secretion".

But when this period arrives and the menstrual discharge takes place into the vagina, the female will suffer from the retention and accumulation of this secretion, and ultimately a tumor or a protrusion of the membrane which closes the vagina will occur, giving rise to severe pain and other serious symptoms.

The secretion of acetylcholine alters the properties of the muscle cell membrane, brings about the influx of sodium ion, and, in short, initiates a wave of depolarization just like that which takes place in a nerve cell.

Golden mentions two cases in which the application of belladonna ointment to the breasts caused suppression of the secretion of milk.

Expectorants are medicines which modify the character of the secretions of the bronchial tubes, and promote their discharge.

An everyday sleepskin would have absorbed the secretions of his skin as easily as it absorbed all other excreta, then turned him out perfectly fresh, but the suit he had been using had only the most elementary provision of that kind.

These faculties impart tone to the system, sustain the processes of nutrition, circulation, assimilation, secretion and excretion, and their distinguishing characteristics are vigor, tension, and elasticity.

For instance, the rate of salivary secretion is controlled by certain cells in the upper medulla and the lower pons.

Probably the most interesting of all these anomalies is the class in which, by a compensatory process, metastasis of the secretions is noticed.

A secretion is thought of as being designed to serve a useful purpose, as, for instance, is true of the pancreatic juice.

The secretin enters the bloodstream and stimulates the production of pancreatic secretion.

Here it encounters the intestinal juice, pancreatic juice, and the bile, the secretion of all of which is stimulated by the presence of food in the alimentary tract.

Its secretion, the pancreatic juice, is emptied into the duodenum by a duct which, as a rule, unites with the duct from the liver.

I think therefore that we may assume that these yield back a very fluid secretion, which is regurgitated, as before suggested, into the pharyngeal pouch, to be withdrawn as required.

Undoubtedly the occasional news reports of increased milk production by dairy cattle when soft music is played in the stalls is due to the stimulation of prolactin secretion by any environmental factor that brings on a sensation of well-being and freedom from insecurity.

An elephant distressed by a long march in the heat of the sun withdraws several quarts of water, but that it is water, and not a secretion produced by salivatory glands, is not I think sufficiently evident.