News Articles February 2022

The growth of new blood vessels from surrounding tissue into growing tissue.

Angiogenesis is the formation of new blood vessels. Angiogenesis is a process controlled by certain chemicals produced in the body. Some of these chemicals stimulate cells to repair damaged blood vessels or form new ones. Other chemicals, called angiogenesis inhibitors, signal the process to stop. The study of natural and synthetic angiogenesis inhibitors, or antiangiogenic agents is important since tumors cannot grow or spread without the formation of new blood vessels.

A diagnostic procedure done in the x-ray department to visualize blood vessels.

An angiogram is a procedure that introduces a contrast medium and Xrays to show the blood flow through the heart and primary vessels (such as the aorta or vena cava). An angiogram is used evaluate the arteries or veins in the arms, legs, chest, or belly.

Relating to or utilizing angiography.

Angiography is a test used to detect blockages of the arteries or veins. A cerebral angiogram can detect the degree of narrowing or obstruction of an artery or blood vessel in the brain, head, or neck. It is used to diagnose stroke and to determine the location and size of a brain tumor, aneurysm, or vascular malformation. This test is usually performed in a hospital outpatient setting and takes up to 3 hours, followed by a 6- to 8-hour resting period. The patient, wearing a hospital or imaging gown, lies on a table that is wheeled into the imaging area. While the patient is awake, a physician anesthetizes a small area of the leg near the groin and then inserts a catheter into a major artery located there. The catheter is threaded through the body and into an artery in the neck. Once the catheter is in place, the needle is removed and a guide wire is inserted. A small capsule containing a radiopaque dye (one that is highlighted on x-rays) is passed over the guide wire to the site of release. The dye is released and travels through the bloodstream into the head and neck. A series of x-rays is taken and any obstruction is noted. Patients may feel a warm to hot sensation or slight discomfort as the dye is released.

Radiography of vessels after the injection of a radiopaque contrast material.

Unlike angioplasty, which is an invasive procedure, angiography breaks the skin only for the insertion of a needle for administering a radiopaque catheter and positioning under fluoroscopic control. Also see angiographic.

Reconstitution or reopening of a blood vessel.

May involve balloon dilation, mechanical stripping of the inside of the blood vessel, forceful injection of an elastic filamentous protein, or placement of a stent.

An eating disorder characterized by loss of appetite or total aversion to food.

Anorexia nervosa is characterized by a distortion of body image and intense fear of gaining weight, causing emaciation and a lack of menstruation among girls and women, and extreme eating disorders involving self-induced vomiting, misuse of laxatives, diuretics or enemas.

Absence of the sense of smell.

Symptom common to tumors of the frontal lobe of the cerebral hemispheres.

Pertaining to being in front of another structure – toward the front of the body.

Anterior pituitary: The front portion of the pituitary, a small gland in the head called the master gland. Hormones secreted by the anterior pituitary influence growth, sexual development, skin pigmentation, thyroid function, and adrenocortical function. These influences are exerted through the effects of pituitary hormones on other endocrine glands except for growth hormone which acts directly on cells.

The effects of underfunction of the anterior pituitary include growth retardation (dwarfism) in childhood and a decrease in all other endocrine gland functions normally under the control of the anterior pituitary (except the parathyroid glands). The results of overfunction of the anterior pituitary include overgrowth (gigantism) in children and a condition called acromegaly in adults.

The front portion of the pituitary.

Produces a number of hormones that affect other tissues and glands including ACTH, GH, LH, FSH, Prolactin, TSH.

Part of the immune system, antibodies are proteins produced by white blood cells that circulate in the blood looking for and attaching to foreign proteins and toxins to neutralize them.

Antibodies are a type of protein made by plasma cells (a type of white blood cell) in response to an antigen, or foreign substance. A single antibody can bind to only one specific antigen to help destroy the antigen. Antibodies can work in several ways, depending on the nature of the antigen. Some antibodies destroy antigens directly; others help white blood cells destroy the antigen.