activator

activator /ac·ti·va·tor/ (ak´tĭ-va″ter)

1. a substance that combines with an enzyme to increase its catalytic activity.

2. a substance that stimulates the development of a specific structure in the embryo.

3. a chemical or other form of energy that causes another substance to become reactive or that induces a chemical reaction.

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plasminogen activator  any of a group of substances that have the ability to cleave plasminogen and convert it into the active form plasmin.

prothrombin activator  any one of the substances in the extrinsic or intrinsic pathways of coagulation.

single chain urokinase-type plasminogen activator  (scu-PA) prourokinase.

tissue plasminogen activator  (TPA) (t-PA), t-plasminogen activator an endopeptidase synthesized by endothelial cells that binds to fibrin clots and catalyzes the cleavage of plasminogen to the active form plasmin. t-PA produced by recombinant technology is used for therapeutic thrombolysis.

u-plasminogen activator  formal name for urokinase. Called also urinary plasminogen a.

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ac·ti·va·tor (kt-vtr)

n.

1. An agent that renders another substance active or accelerates a process or reaction.

2. The fragment produced by chemical cleavage of a proactivator that induces the enzymatic activity of another substance.

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activator

[ak′tivā′tər]

1 a substance, force, or device that stimulates activity in another substance or structure, especially a substance that activates an enzyme.

2 a substance that stimulates the development of an anatomic structure in the embryo.

3 an internal secretion of the pancreas.

4 an apparatus for making substances radioactive, such as a cyclotron or neutron generator.

5 (in dentistry) a removable orthodontic appliance that functions as a passive transmitter and stimulator of the perioral muscles.

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activator (ak·ti·vāˑ·ter),

n a chiropractic technique that employs a device that, when applied to joints, muscles, and soft tissues, conveys a powerful impulse to correct subluxations.

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activator (ak´tivātur),

n 1. an alkali, sodium carbonate, which is a component of photographic developing solution that softens and swells the gelatin of the film emulsion and provides the necessary alkaline medium for the developing agents to react with the sensitized silver halide crystals.
n 2. in orthodontics, a removable orthodontic appliance intended to function as a passive transmitter and sometimes stimulator of the forces of the perioral muscles. One in the myofunctional category of appliances also known by such names as
Andresen, Bimler, Monobloc, and
Frankel.

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activator

a substance that makes another substance active or that renders an inactive enzyme capable of exerting its proper effect.

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developing activator

see developing accelerator.

plasminogen activator

a substance that activates plasminogen and converts it into plasmin.

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Patient discussion about activator.

Q. My son who is 4yrs old is so hyper-active. How do I find out if my son has ADHD or ADD? My son who is 4yrs old is so hyper-active that he climbs on everything and jumps off everything to. I cannot prevent that. I have also punished him. He cries for a split moment and then he just goes back to doing the same thing. I've tried every type of punishment that I could think of. I'm afraid of him. What can I do? How do I find out if my son has ADHD or ADD?

A. I agree complete physical and psycho analysis to rule out any underlying cause. But young children often act out characters; you could ask him why he's doing this and give plenty of proper oportunities to do so. Example when he climbs on and jumps off the furniture ask him what he is doing. He may be pretending to be something or someone. If so ask him where "so and So" does their jumping and ask or remind him what the funiture is for. explain how to properly use it have him demonstrate. Example: " What is a chair for or how do we use a chair? (sitting) "Where" (on the seat, child may touch the seat and answer here) "show me how" (child sits on seat of chair). Praise the positive behavior smiling and then suggest that he can play "so an So" somewhere else at another time: for instance if possible take him out to the playground or in a safe area lie a firm suitcase or other boxlike item on its side, cover with a soft quilt and supervise his c

Q. How does drinking a lot of water before an activity helps to avoid dehydration? Question Description It just makes me go to the bathroom more…

A. you need to drink water before,during and after any sports or exercises,because you sweat which causes dehydration.

Q. why do i have problems with my right hip?i am 38 and i've been working out alot since jan of 92.why the hip? i am very physically active.i am 38.not overweight at all.i am 5-9 and a half and i weigh 180-185 lbs.i have problems with my right hip.hard to exactly explain how it does it's thing on me.i got back into practicing karate kicks in 98 after a 7 year hiatus.i ride my bicycle alot and i do dips,pullups,and moderate level weight lifting.i think maybe its the bicycle sprints that i like to incorporate in my bicycling.what do you's think...?

A. i do not get tingling or burning.i never suffered trauma to the hip.
i do not have pain during the night.only if i stood up all of a sudden right on the bed after laying there for hours would it possibly act up.
during my regular waken hours,if i sit for a prolonged period of time and then go to get up too soon or too quick,i will get the pain.it just always feels like i badly pulled something,or it temporarily went out of place.then i cease further movement for around 10 seconds and sort of let it settle back into place and i do this sort of hip rotational thing to help loosen the area and then,i'm usually good for awhile after that.i havent been to a doctor or orthopedic surgeon because i know how many doctors can be and they might try to convince me that i absolutely have to get surgery or i'll be crippled in a few years.i know how docs like to use scare tactics alot of times and do surgeries that the patient didnt really have to get to begin with.i'm leary about docs in general.