Aquaporins
A class of porins that allow the passage of WATER and other small molecules across CELL MEMBRANES.
Aquaporin 1
Aquaporin 1 forms a water-specific channel that is constitutively expressed at the PLASMA MEMBRANE of ERYTHROCYTES and KIDNEY TUBULES, PROXIMAL. It provides these cells with a high permeability to WATER. In humans polymorphisms of this protein result in the Colton blood group antigen.
Aquaporin 5
Aquaporin 5 is a water-specific channel protein that is expressed primarily in alveolar, tracheal, and upper bronchial EPITHELIUM. It plays an important role in maintaining water HOMEOSTASIS in the LUNGS and may also regulate release of SALIVA and TEARS in the SALIVARY GLANDS and the LACRIMAL GLAND.
Aquaporin 4
Water
Aquaporin 6
Aquaglyceroporins
Aquaporin 2
Aquaporin 2 is a water-specific channel protein that is expressed in KIDNEY COLLECTING DUCTS. The translocation of aquaporin 2 to the apical PLASMA MEMBRANE is regulated by VASOPRESSIN, and MUTATIONS in AQP2 have been implicated in a variety of kidney disorders including DIABETES INSIPIDUS.
Mercuric Chloride
Osmosis
Tendency of fluids (e.g., water) to move from the less concentrated to the more concentrated side of a semipermeable membrane.
Plant Transpiration
Water-Electrolyte Balance
The balance of fluid in the BODY FLUID COMPARTMENTS; total BODY WATER; BLOOD VOLUME; EXTRACELLULAR SPACE; INTRACELLULAR SPACE, maintained by processes in the body that regulate the intake and excretion of WATER and ELECTROLYTES, particularly SODIUM and POTASSIUM.
Plant Proteins
Permeability
Glycerol
Kidney Concentrating Ability
Biological Transport
Cistaceae
Plant Roots
The usually underground portions of a plant that serve as support, store food, and through which water and mineral nutrients enter the plant. (From American Heritage Dictionary, 1982; Concise Dictionary of Biology, 1990)
Tulipa
Cell Membrane Permeability
Blood Group Antigens
Body Water
Fluids composed mainly of water found within the body.
Gene Expression Regulation, Plant
Trichomes
Hair-like extensions on specialized epidermal surfaces of plants which protect against damage from insects, animals, light degradation and fungal infection. Trichomes may also occur on certain unicellular EUKARYOTES.
Calotropis
Molecular Sequence Data
Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.
Osmotic Pressure
Amino Acid Sequence
4-Chloromercuribenzenesulfonate
Cell Membrane
Ion Channels
Plant Leaves
Acoustic Maculae
Pulvinus
A group of cells at the base of a leaf in certain plants that, by rapidly losing water, brings about changes in the position of the leaves. (Concise Dictionary of Biology, 1990)
Spinacia oleracea
Exocrine Glands
Polyuria
Tephritidae
Kidney Tubules, Collecting
Dehydration
The condition that results from excessive loss of water from a living organism.
Brain Edema
Increased intracellular or extracellular fluid in brain tissue. Cytotoxic brain edema (swelling due to increased intracellular fluid) is indicative of a disturbance in cell metabolism, and is commonly associated with hypoxic or ischemic injuries (see HYPOXIA, BRAIN). An increase in extracellular fluid may be caused by increased brain capillary permeability (vasogenic edema), an osmotic gradient, local blockages in interstitial fluid pathways, or by obstruction of CSF flow (e.g., obstructive HYDROCEPHALUS). (From Childs Nerv Syst 1992 Sep; 8(6):301-6)