Zoledronic acid Chemische Eigenschaften,Einsatz,Produktion Methoden
R-S?tze Betriebsanweisung:
R21/22:Gesundheitssch?dlich bei Berührung mit der Haut und beim Verschlucken.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
S-S?tze Betriebsanweisung:
S24/25:Berührung mit den Augen und der Haut vermeiden.
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
Beschreibung
Zoledronic acid is a white, crystalline powder that is available in vials for reconstitution for IV infusion over at
least 15 minutes. It does not undergo metabolic transformation and does not inhibit CYP450 enzymes.
Clearance of this agent is dependent on the patient's creatinine clearance, not on dose. Serum creatinine
levels should be evaluated before every treatment. Zolendronic acid is contraindicated in patients with severe
renal impairment.
Chemische Eigenschaften
White Solid
Verwenden
Zoledronic acid induces apoptosis in osteoclasts by inhibiting enzymes of the mevalonate pathway and preventing the isoprenylation of small GTP-binding proteins such as Ras and Rho.
Definition
ChEBI: An imidazole compound having a 2,2-bis(phosphono)-2-hydroxyethane-1-yl substituent at the 1-position.
Biologische Funktion
Zoledronic acid, a bisphosphonate, was approved by the U.S. FDA in 2001 for the treatment of hypercalcemia
of malignancy, a metabolic complication that can be life-threatening. Hypercalcemia of malignancy
can occur in up to 50% of patients diagnosed with advanced breast cancer, multiple myeloma, and nonsmall
cell lung cancer. This condition arises when chemical moieties produced by the tumor cause overstimulation of
osteoclasts. When there is an increase in bone degradation, there is a concomitant release of calcium into the
plasma. When serum concentrations of calcium rapidly elevate, the kidneys are unable to handle the overload,
and hypercalcemia results. This can lead to dehydration, nausea, vomiting, fatigue, and confusion. Zoledronic
acid effectively decreases plasma calcium concentrations via inhibition of bone resorption (inhibition of
osteoclastic activity and induction of osteoclast apoptosis). It also prevents the increase in osteoclastic activity
caused by tumor-based stimulatory factors. Additionally zoledronic acid has been approved by the U.S. FDA for
the treatment of multiple myeloma and bone metastases associated with solid tumor–based cancers (e.g.,
prostrate and lung). This agent is currently in late-stage clinical trials for the treatment and prevention of
osteoporosis and, if approved, will be formulated as a 5-mg, once-yearly IV infusion.
Clinical Use
Zoledronic acid is most
commonly given to patients whose cancer is no longer responding to hormones, but it also may be
given to prevent the bone thinning and weakening that results from hormonal treatments.
Zoledronic acid Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
