AQP1 (F8C2E) Rabbit Monoclonal Antibody #69343

Aquaporins (AQPs) are integral membrane proteins that serve as channels to transfer water and small solutes across the membrane. There are 13 isoforms of AQP that are expressed in different types of cells and tissues (1,2). AQP1 is found in blood vessels, kidney, eye, and ear. AQP2 is found in the kidney, and it has been shown that the lack of AQP2 results in diabetes (1,3). AQP4 is present in the brain, where it is enriched in astrocytes (1,2,4). AQP5 is found in the salivary and lacrimal gland, AQP6 in intracellular vesicles in the kidney, AQP7 in adipocytes, AQP8 in kidney, testis, and liver, AQP9 is present in liver and leukocytes, and AQP10-11 in the intestine (1,3,4). AQPs are essential for the function of cells and organs. It has been shown that AQP1 and AQP4 regulate water homeostasis in astrocytes, preventing cerebral edema caused by solute imbalance (5). Several studies have shown the involvement of AQPs in the development of inflammatory processes, including innate and adaptive cell immunity (6,7).

In the choroid plexus, AQP1 facilitates cerebrospinal fluid (CSF) secretion. AQP1-deficient mice have been reported to exhibit a twenty-five percent decrease in CSF secretion. AQP1 is also expressed in dorsal root ganglion neurons, where it may play a role in the perception of pain (8). AQP1 is upregulated in the cerebral cortex in the early stages of Alzheimer's disease (AD) and in AD mouse models, and may play a role in slowing the progression of disease pathology (9-11).