What is the spectrum of activity of FACTIVE on Gram(+) organisms?
FACTIVE is a broad-spectrum agent with excellent activity against both Gram(+) and Gram(-) agents. Against Gram(+) pathogens, FACTIVE has lower MIC90 than other quinolones, which means that FACTIVE is more potent eradicating bacteria at a lower concentration.1
Against S pneumoniae, the most frequent cause of respiratory tract infection, MIC90 of FACTIVE is approximately 8 times lower than that of Moxifloxacin.
[Activity against Gram(+) pathogens]
What is the spectrum of activity of FACTIVE on Gram(-) organisms?
Against Gram(-) pathogens, FACTIVE has also been shown to have good activity. A recent Japanese study2 showed, FACTIVE to be the most potent of all quinolones tested, against H influenzae and M catarrhalis, and to have the good activity against E coli associated with other members of its class.
FACTIVE showed excellent activity against strains of H influenzae irrespective of whether they produce β-lactamase,3 and therefore retains its antibiotic activity where other against may encounter resistance.
[Activity against Gram(-) pathogens]
What is the spectrum of activity of FACTIVE on atypicals?
FACTIVE also has excellent activity against atypical and intra-cellular pathogens, including4,5:
- L pneumophila
- Chlamydia species
- Mycoplasma species
FACTIVE is active against some anaerobes: an in vitro study has concluded that FACTIVE has good clinical potential for the treatment of anaerobic infections, particularly those caused by Gram(+) pathogens.6
[Activity against anaerobic pathogens6]
What is the spectrum of activity of FACTIVE on resistant strains?
In addition to its activity against penicillin-resistant pneumococci, FACTIVE retains activity against strains that are resistant to other quinolons.3 In many studies,7,8 FACTIVE has been shown to be the most potent of the quinolones tested against resistant pneumococcal strains7,8 with MIC90 that are significantly lower than other agents irrespective of the resistance mechanism.7 FACTIVE is the first antibacterial agent which is approved for MDRSP*.
* MDRSP: multi-drug resistant Streptococcus pneumoniae includes isolates previously known as PRSP (penicillin-resistant Streptococcus pneumoniae), and are strains resistant to two or more of the following antibiotics: penicillin (MIC ≥2 μg/mL), 2nd generation cephalosporins (e.g., cefuroxime), macrolides, tetracyclines and trimethoprim/sulfamethoxazole.
[Mean MIC90 against Ciprofloxacin-resistant strains of S pneumoniae]
Summary of Pathogens Susceptible* to FACTIVE
- Gram(-)
- Haemophilus influenzae
- Moraxella catarrhalis
- Klebsiella pneumoniae
- Escherichia coli
- Proteus spp
- Neisseria gonorrhoeae
- Salmonella spp
- Shigella spp
- Enterobacer aerogenes
- Enterobacter cloacae
- Morganella morganii
- Anaerobes
- Clostridium perfringens
- Fusobacterium nucleatum
- Fusobacterium necrophorum
- Peptostreptococcus anaerobis
- Peptostreptooccus asaccharolyticus
- Peptostreptococcus magnus
- Peptostreptococcus micros
- Peptostreptococcus prevotii
- Porphyromonas asaccharolytica
- Gram(+)
- Streptococcus pneumoniae
(Including MDRSP) - Streptococcus pyogenes
- Staphylococcus aureus
- Staphylococcus epidermidis
- Staphylococcus saprophyticus
- Staphylococcus haemolyticus
- Streptococcus mitis
- Streptococcus bovis
- Streptococcus agalactiae
- Atypicals
- Chlamydia pneumoniae
- Chlamydia trachomatis
- Legionella pneumophila
- Mycoplasma fermentans
- Ycoplasma hominis
- Mycoplasma pneumoniae
- Ureaplasma urealyticum
* 90% of strains MIC < 0.25