Monday, January 7, 2008

Focus on H1-Receptor Antagonists. Part 7

 Restraint of P-Glycoprotein: Effects on Drug DispositionSome drugs
have also been shown to inhibit P-gp business mechanisms (reviewed by
Silverman and summarised in gathering III).
Tanigawara et al. showed that the transfer of fexofenadine occurred via a
P-gp-dependent chemical process located on the apical side of kidney
epithelial cell membranes.
Direction with spironolactone, cyclosporin, quinidine and verapamil
inhibited the P-gp-mediated transportation of digoxin.
Because these drugs are known to interact with digoxin, causing an
process in ECF drug concentrations and perniciousness, it appears that
the P-gp excretory white matter within the kidney may be an important
site of drug inter-action.

Forbiddance of intestinal P-gp has been proposed as a philosophical
doctrine to explain increases in the bioavailability of certain drugs.
For good example, the P-gp inhibitor erythromycin has been reported to
modification the bioavailability of many drugs, including the
H1-receptor antagonists terfenadine and astemizole, the
immunosuppressant cyclosporin and the ß-adrenergic adversary talinolol.
Nonetheless, the degree to which organic process of P-gp is responsible
for these interactions requires further musing.

Biological
process of P-gp transferral mechanisms can be exploited to enhance the
efficacy of tumour cell therapy, permitting increased access code of
antitumour drugs to tumour cells.
P-gp inhibitors may also via media the safety device of certain drugs
by increasing their organic process in the gut and decreasing their
permission through the kidney.
This is a part of article Focus on H1-Receptor Antagonists. Part 7 Taken from "Discount Allegra Fexofenadine" Information Blog

No comments: