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Achaogen Inc said on Tuesday U.S. health regulators cleared its antibiotic Zemdri (plazomicin) to treat adults with complicated urinary tract infections, but declined approval for treating bloodstream infections.

plazomicn是aminoglycoside類的抗生素,從sisomicin的衍生物而來

Plazomicin_structure.svg.png

能避免被主要的Aminoglycoside modifying enzyme破壞而失去活性。

plazomicin用於治療MDR格蘭氏陰性菌感染,與daptomycin 或 ceftobiprole 併用治療 methicillin-resistant Staphylococcus aureus (MRSA)和 vancomycin-resistant S. aureus (VRSA)。

與cefepime, doripenem, imipenem 或 piperacillin/tazobactam併用治療Pseudomonas aeruginosa。

也可以合併處理carbapenem-resistant Acinetobacter baumannii。

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The U.S. Food and Drug Administration cited lack of evidence of effectiveness of the drug in a clinical study to treat bloodstream infections, the company said in a statement.

"We see limited impact on future revenues if plazomicin's label does not include (bloodstream infections)," Wedbush analyst Robert Driscoll said in an interview last week.

The FDA decision on the drug follows similar recommendations by an independent panel to the regulator in May.

The drug is approved for complicated urinary tract infections, including pyelonephritis, caused by Escherichia coli, Klebsiella pneumoniae, Proteus mirabilis, or Enterobacter cloacae, in patients who have limited or no alternative treatment options. Zemdri is an intravenous infusion, administered once daily.

The condition has other approved treatments in the market, including Vabomere (meropenem and vaborbactam), developed by Medicines Co unit Rempex Pharmaceuticals and approved for complicated urinary tract infections caused by E. coli, K. pneumoniae, and Enterobacter cloacae species complex.

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