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Zithromax (Azithromycin) Kills Multidrug-Resistant Bacteria

Zithromax (Azithromycin) Kills Multidrug-Resistant Bacteria

Zithromax (Azithromycin) is one of the best selling prescription drugs sold online. Azithromycin is currently used for the treatment of bacterial infections such as laryngitis, bronchitis, throat infections, pneumonia, sinusitis and chlamydia. A recent study has shown that Zithromax can do much, much more than what doctors are currently prescribing the drug for. In common laymen terms the study showed that current methods used for testing drugs like Zithromax were inadequate to say the least. Testing drugs in an unrealistic standard laboratory is not the same as testing drugs in conditions that resemble the human body. When Zithromax was tested in conditions that resembled the human body, along with its natural antimicrobial factors, results showed that Zithromax killed many multidrug-resistant bacteria (“superbugs') which had been previously overlooked. For a more technical understanding, read the article below:

Contrary to current medical dogma, researchers at University of California, San Diego School of Medicine and Skaggs School of Pharmacy and Pharmaceutical Sciences report that the common antibiotic azithromycin kills many multidrug-resistant bacteria very effectively — when tested under conditions that closely resemble the human body and its natural antimicrobial factors. The researchers believe the finding, published June 10 by EBioMedicine, could prompt an immediate review of the current standard of care for patients with certain so-called "superbug" infections.

Azithromycin is the most often prescribed antibiotic in the United States, where short courses can cure common bacterial infections such as strep throat and sinusitis. But azithromycin, also sold commercially as Zithromax Z-Pak, is never given to patients with some of the most nefarious multidrug-resistant bacterial infections. That's because years of testing in standard laboratory media — the nutrient broth that helps bacteria grow — concluded that azithromycin doesn't kill these types of bacteria.

"Unquestioning adherence to a single standardized lab practice may be keeping doctors from considering potentially life-saving antibiotics — therapies that are proven safe and readily available in any hospital or pharmacy," said senior author Victor Nizet, MD, professor of pediatrics and pharmacy. "While bacterial agars and testing media are useful in providing consistency for hospital laboratories around the world, the actual infection is taking place in the blood and tissues of the patient, and we know the action and potency of drugs can change quite dramatically in different surroundings."

The bacteria at the center of this study are Gram-negative rods, so-called due to their cell wall structure (they appear "negative" in a classic typing test known as the Gram stain) and their shape. Nizet's team studied extremely antibiotic-resistant strains of three medically important Gram-negative rods: Pseudomonas aeruginosa, Klebsiella pneumoniae and Acinetobacter baumannii. These opportunistic pathogens rarely infect healthy people but instead strike debilitated patients in hospitals, such as those with weakened immune systems, or following trauma or surgery, sometimes with deadly consequences. The Centers for Disease Control and World Health Organization have warned that resistance is rapidly spreading in these species, and no new antibiotic candidates are on the horizon.

In this study, Nizet's team found that simply growing these Gram-negative rod bacteria in mammalian tissue culture media — the same stuff used to sustain human cells in the lab — instead of standard bacteriologic media made a huge difference in their sensitivity to azithromycin. Even more striking, the drug-resistant superbugs were completely wiped out when azithromycin was paired with the antibiotic colistin or with antimicrobial peptides produced naturally by the human body during infection.

To test these promising laboratory results in a live infection system, Nizet and team moved the experiment into a mouse model of multidrug-resistant A. baumanniipneumonia. They treated the mice with a single injected dose of azithromycin at a concentration that mimics the amount typically given by IV to human patients. Twenty-four hours after infection, azithromycin-treated mice had 99 percent fewer bacteria in their lungs than untreated mice. Similarly, in mouse models of multidrug-resistant P. aeruginosa and K. pneumoniae infections, a single dose of azithromycin reduced bacterial counts by more than 10-fold.

According to the authors, the study suggests that the general effectiveness of antibiotics in the decades since the discovery of penicillin has led to complacency in our approach to antibiotic evaluation. In the current era of ever-increasing antibiotic resistance, they recommend a more holistic approach that considers both the bug and the patient's immune system.

This article is strictly for informational purposes and, as always, it is recommended to get advice from your doctor and acquaint yourself with the possible side effects of taking Zithromax (Azithromycin).