arginine vasopressin

DEFINITION:

Vasopressin containing arginine, as that from most mammals, including man.

AVP

DEFINITION:

Arginine vasopressin.

mediates

DEFINITION:

Accomplishes indirectly; accomplishes by the aid of an intervening medium.

water transport

DEFINITION:

The movement of water in biological systems.

renal

DEFINITION:

Pertaining to the kidney.

collecting ducts

DEFINITION:

Renal collecting tubules: the arcuate renal tubule, straight collecting tubule, and papillary duct considered together.

water channels

DEFINITION:

Channels in a cell membrane that permit passage of water molecules; chemical substances such as vasopressin cause the opening of new channels and increase permeability.

aquaporin-2

DEFINITION:

Also called WCH-CD, this water channel makes the principal cells of the inner medullary collecting duct in the kidneys more permeable to water. Lack of functional aquaporin-2 gene leads to a rare form of nephrogenic diabetes insipidus.

AQP2

DEFINITION:

Aquaporin-2.

apical plasma membrane

DEFINITION:

Indicating the apex of the plasma membrane.

AQP2

DEFINITION:

Aquaporin-2.

urine

DEFINITION:

The fluid excreted by the kidneys, passed through the ureters, stored in the bladder, and discharged through the urethra. Urine, in health, has an amber color, a slight acid reaction, a peculiar odor, and a bitter, saline taste.

test

DEFINITION:

1. An examination or trial.

2. A significant chemical reaction.

3. A reagent.

4. A loose or rigid, secreted or agglutinated, protective shell or shell-like covering or exoskeleton, seen in various invertebrates, including certain protozoa and echinoderms.

hypothesis

DEFINITION:

A supposition that appears to explain a group of phenomena and is advanced as a basis for further investigation; a proposition that is subject to proof or to an experimental or statistical test.

urinary excretion

DEFINITION:

The throwing off or elimination of urine by normal discharge.

AQP2

DEFINITION:

Aquaporin-2.

u-AQP2

DEFINITION:

Urinary aquaporin-2.

AVP

DEFINITION:

Arginine vasopressin.

renal

DEFINITION:

Pertaining to the kidney.

collecting ducts

DEFINITION:

Renal collecting tubules: the arcuate renal tubule, straight collecting tubule, and papillary duct considered together.

water deprivation

DEFINITION:

A method for testing the body's ability to concentrate urine when plasma osmolality is artificially increased. See also water deprivation test .

urine

DEFINITION:

The fluid excreted by the kidneys, passed through the ureters, stored in the bladder, and discharged through the urethra. Urine, in health, has an amber color, a slight acid reaction, a peculiar odor, and a bitter, saline taste.

urine

DEFINITION:

The fluid excreted by the kidneys, passed through the ureters, stored in the bladder, and discharged through the urethra. Urine, in health, has an amber color, a slight acid reaction, a peculiar odor, and a bitter, saline taste.

u-AQP2

DEFINITION:

Urinary aquaporin-2.

rate

DEFINITION:

1. The amount of change of a physical quantity or number of occurrences of an event per unit time.

2. In epidemiology and demography, the frequency of an event in a specified population; correctly applied only to fractions for which all of the cases contributing to the numerator are also counted in the denominator and for which the denominator is the entire population at risk. Rates are often multiplied by a factor to give the number of events per 1000, 10,000, or 100,000 population.

3. More generally, a term sometimes used to denote some measured quantity with respect to another. Symbol R.

positive correlation

DEFINITION:

A correlation is said to be positive (but never larger than 1) when both variables increase or decrease together.

u-AQP2

DEFINITION:

Urinary aquaporin-2.

rate

DEFINITION:

1. The amount of change of a physical quantity or number of occurrences of an event per unit time.

2. In epidemiology and demography, the frequency of an event in a specified population; correctly applied only to fractions for which all of the cases contributing to the numerator are also counted in the denominator and for which the denominator is the entire population at risk. Rates are often multiplied by a factor to give the number of events per 1000, 10,000, or 100,000 population.

3. More generally, a term sometimes used to denote some measured quantity with respect to another. Symbol R.

infusion

DEFINITION:

1. The steeping of a substance in water to obtain its medicinal principles.

2. The product of the process of steeping a drug for extraction of its medicinal principles.

3. The therapeutic introduction of a fluid other than blood, as saline solution, into a vein.

NOTE---An infusion flows in by gravity, an injection is forced in by a syringe, an instillation is dropped in, an insufflation is blown in, and an infection slips in unnoticed.

u-AQP2

DEFINITION:

Urinary aquaporin-2.

rate

DEFINITION:

1. The amount of change of a physical quantity or number of occurrences of an event per unit time.

2. In epidemiology and demography, the frequency of an event in a specified population; correctly applied only to fractions for which all of the cases contributing to the numerator are also counted in the denominator and for which the denominator is the entire population at risk. Rates are often multiplied by a factor to give the number of events per 1000, 10,000, or 100,000 population.

3. More generally, a term sometimes used to denote some measured quantity with respect to another. Symbol R.

infusion

DEFINITION:

1. The steeping of a substance in water to obtain its medicinal principles.

2. The product of the process of steeping a drug for extraction of its medicinal principles.

3. The therapeutic introduction of a fluid other than blood, as saline solution, into a vein.

NOTE---An infusion flows in by gravity, an injection is forced in by a syringe, an instillation is dropped in, an insufflation is blown in, and an infection slips in unnoticed.

positive correlation

DEFINITION:

A correlation is said to be positive (but never larger than 1) when both variables increase or decrease together.

u-AQP2

DEFINITION:

Urinary aquaporin-2.

rate

DEFINITION:

1. The amount of change of a physical quantity or number of occurrences of an event per unit time.

2. In epidemiology and demography, the frequency of an event in a specified population; correctly applied only to fractions for which all of the cases contributing to the numerator are also counted in the denominator and for which the denominator is the entire population at risk. Rates are often multiplied by a factor to give the number of events per 1000, 10,000, or 100,000 population.

3. More generally, a term sometimes used to denote some measured quantity with respect to another. Symbol R.

u-AQP2

DEFINITION:

Urinary aquaporin-2.

u-AQP2

DEFINITION:

Urinary aquaporin-2.

AVP

DEFINITION:

Arginine vasopressin.

collecting ducts

DEFINITION:

Renal collecting tubules: the arcuate renal tubule, straight collecting tubule, and papillary duct considered together.

permission

DEFINITION:

Formal consent; authorization.