Transcellulárisan

Transcellulárisan is a Hungarian adverb meaning "transcellularly." It refers to a process or movement that occurs across or through cells. In biological contexts, transcellular transport describes the mechanism by which substances move from one side of a cellular barrier to the other, passing directly through the cytoplasm of the cells. This is distinct from paracellular transport, which occurs between cells.

Many biological and physiological processes rely on transcellular transport. For example, in the absorption of nutrients in the intestines, molecules like glucose and amino acids are transported across the epithelial cells of the intestinal lining. Similarly, in the kidneys, essential substances are reabsorbed back into the bloodstream via transcellular pathways in the renal tubules. The transport of ions and water across various cell membranes also frequently involves transcellular mechanisms.

The specific pathways and mechanisms involved in transcellular transport can vary depending on the substance being transported and the type of cell. These can include passive diffusion, facilitated diffusion, and active transport, often involving specific protein channels or carriers embedded in the cell membrane. Understanding transcellular transport is crucial in fields such as pharmacology, where drug delivery often aims to leverage these cellular pathways to reach target tissues, and in understanding various disease states where transport mechanisms may be impaired.