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Prior to the introduction of direct factor Xa inhibitors, vitamin K antagonists such as warfarin were the only oral anticoagulants for over 60 years, and together with heparin have been the main blood thinners in use. People admitted to hospital requiring blood thinning were started on an infusion of heparin infusion, which thinned blood ...
Rivaroxaban bears a striking structural similarity to the antibiotic linezolid: both drugs share the same oxazolidinone-derived core structure. [39] Accordingly, rivaroxaban was studied for any possible antimicrobial effects and for the possibility of mitochondrial toxicity, which is a known complication of long-term linezolid use. [40]
Andexanet alfa is used to stop life-threatening or uncontrollable bleeding in people who are taking rivaroxaban or apixaban. [8] Studies in healthy volunteers show that the molecule binds factor Xa inhibitors and counters their anti-Xa-activity. [11] The first published clinical trial was a prospective, open label, single group study. [12]
Two hydrogen bonds are formed and serve an important role directing rivaroxaban into the S1 and S4 subsites. Due to these hydrogen bonds, rivaroxaban forms a L-shape and fits in the pockets. Chlorine substituent of the drug interacts with Tyr-228 in the S1 pocket which enables rivaroxaban to achieve good oral bioavailability and potency.
In menaquinone the side chain is composed of a varying number of isoprenoid residues. Vitamin K antagonists (VKA) are a group of substances that reduce blood clotting by reducing the action of vitamin K. The term "vitamin K antagonist" is technically a misnomer, as the drugs do not directly antagonize the action of vitamin K in the ...
Elderly people generally want to live independently as long as possible, which requires them to be able to engage in self-care and other activities of daily living. A geriatrician may be able to provide information about elder care options, and refer people to home care services, skilled nursing facilities , assisted living facilities , and ...
Sustained-release dosage forms are dosage forms designed to release (liberate) a drug at a predetermined rate in order to maintain a constant drug concentration for a specific period of time with minimum side effects. This can be achieved through a variety of formulations, including liposomes and drug-polymer conjugates (an example being ...
Dabigatran, sold under the brand name Pradaxa among others, is an anticoagulant used to treat and prevent blood clots and to prevent stroke in people with atrial fibrillation. [ 6 ] [ 7 ] Specifically it is used to prevent blood clots following hip or knee replacement and in those with a history of prior clots. [ 6 ]