Get Discount 5% Off
Subscribe to our newsletters now and stay up-to-date with new arrivals, updates and deals.
Currency
Some of the drugs are having very short half-life, to compensate this problem it is common practice to increase the dosage, frequency or prolongation of administration of drug to maintain effective therapeutic concentration in patient. In this study a drug delivery scaffold was designed and synthesized based on polyethylene glycol (PEG)- ethylene diamine tetra acetic acid (EDTA) based poly(amidoamine) (PAMAM) star polymer (with 16 primary amine group on surface). Cloxacillin, Cephalexin and Ciprofloxacin were used as a model drugs having short half life to conjugate with PEGylated dendrimer. These drugs were coupled to star polymer via ester bond. Fourier transform infrared spectroscopy (FT-IR) and proton nuclear magnetic resonance (1 HNMR) was used to characterize the intermediate and drug-star-polymer conjugates. Invitro activity of derivatized drugs compared to standard drug alone, it was found that zone of inhibition obtained by both category of drugs (standard and derivatized drugs) are almost similar. That means drug derivatization does not altering the antibacterial activity of drugs. To investigate pharmacokinetic parameters, selected drugs alone and modified drugs [(Drug-PEG)16-Dendrimer] were intravenously injected into rats. All the modified drugs demonstrated a dramatic increase in half-life than drugs alone. These studies suggest the use of these new PEG based EDTA core dendrimer support as a valuable alternative for enhancing biological half-life of drugs.
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
Subscribe to our newsletters now and stay up-to-date with new arrivals, updates and deals.
Thanks for subscribing!
This email has been registered!
Product | SKU | Description | Collection | Availability | Product Type | Other Details |
---|