For acinar cells to give rise to cancer, they first must lose their acinar characteristics and become duct-like, in a process known as acinar-to-ductal metaplasia (or ADM).
RUNX1 boosts the activity of at least one regulator that encourages the cells to become duct-lining cells and represses another regulatory protein that turns cells into milk-producing cells.
Since the first step of pancreatic cancer development is the ADM process that causes the acinar cells to become duct-like, Krah et al. hypothesized that preventing ADM from occurring may protect against Kras-mediated transformation.
In mammals, the first part of the epididymis consists of a head, body, and tail that wrap around the testis; it gradually straightens to become the spermatic duct.
If you don't have Elmer's glue handy, and the glochids become very annoying, duct tape or strong tack masking tape can remove them.
In males, the Wolffian duct becomes the efferent or deferent duct (including the epididymis, vas deferens, and seminal vesicle) that stores and transports sperm and seminal fluids.
Both types of the disease result from excessive proliferation of the epithelial cells lining the ducts and tubules of the kidney, so that the lumens of the ducts become closed off as cysts, which then expand, leading to a massive enlargement of the kidneys, which can become as big as an American football (figure 2d).
In the presence of ADH the medullary collecting ducts become freely permeable to solute and water.
More precisely, until 13.5 days of mice pancreatic development the expression level of Wnt5a gene (carrying the module) is higher to that of Wnt5b, while at 14.5 day, where pancreatic ducts become visible [ 15], both genes hold similar expression.
All of the enlarged ductal structures contained PCNA positive cells, indicating that proliferation is the principle mechanism by which the ducts become filled with epithelium in such a short span of time.
Because of the fibrosis, the common bile duct and main pancreatic duct may become stenosed with subsequent upstream dilatation.
