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Additive effect can be used to detect synergy as it can be considered as the baseline effect in methods determining whether drugs have synergistic effect. Synergistic effect is similar to additive effect, having a combination effect greater than additive effect. It can produce an effect of 2+2 > 4 when two drugs are used together.
In the synergistic response, the applied antibiotics work together to produce an effect more potent than if each antibiotic were applied singly. [1] Compare to the additive effect , where the potency of an antibiotic combination is roughly equal to the combined potencies of each antibiotic singly, and antagonistic effect, where the potency of ...
additive (the result is what you expect when you add together the effect of each drug taken independently), synergistic (combining the drugs leads to a larger effect than expected), or; antagonistic (combining the drugs leads to a smaller effect than expected). [3] It may be difficult to distinguish between synergistic or additive interactions ...
According to the Synergism Hypothesis, synergistic effects have been the drivers of cooperative relationships of all kinds and at all levels in living systems. The thesis, in a nutshell, is that synergistic effects have often provided functional advantages (economic benefits) in relation to survival and reproduction that have been favored by ...
Let and be doses of compounds 1 and 2 producing in combination an effect . We denote by D e 1 {\displaystyle D_{e1}} and D e 2 {\displaystyle D_{e2}} the doses of compounds 1 and 2 required to produce effect e {\displaystyle e} alone (assuming this conditions uniquely define them, i.e. that the individual dose-response functions are bijective).
The therapeutic window is the amount of a medication between the amount that gives an effect (effective dose) and the amount that gives more adverse effects than desired effects. For instance, medication with a small pharmaceutical window must be administered with care and control, e.g. by frequently measuring blood concentration of the drug ...
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The effects of trimethoprim causes a backlog of dihydrofolate (DHF) and this backlog can work against the inhibitory effect the drug has on tetrahydrofolate biosynthesis. This is where the sulfamethoxazole comes in; its role is in depleting the excess DHF by preventing it from being synthesised in the first place. [14]