Modern medicine is losing its battle against bacteria. The original penicillin is ineffective. In hospitals and around the world superbugs have developed that are not touched by any of our antibiotics. When this happens, patients are left to fight off the invaders with only their own immune systems. Often, they succumb. The appearance of superbugs is a huge threat to our health and the days of popping an antibiotic and feeling better in a couple of days are numbered. How did we get to this point? Antibiotics are over-prescribed, patients demand them, and when they feel better, don’t finish the course. Any resistant bacteria are left to reproduce and pass along their resistance.
An old therapy which was abandoned when antibiotics proved so effective may provide a new weapon in our fight against bacteria. Bacteriophages, shown below, are viruses with a protein head and in the case of the ones shown, a “landing” tail which is specific to a species of bacteria and is used by the phage to inject its genetic material (DNA or RNA) into the cell. Once in the bacteria, its machinery is taken over and it produces more and more phages, until it bursts, is destroyed, and releases new phages. The new phages seek out more bacteria cells, inject, infect, and kill them. Cells of a human or animal are not harmed by the phages.
It sounds wonderful. The best part is that phages are everywhere, the ocean, in sewage, soil; wherever bacteria are found, phages are, too. It’s not so wonderful when the actual problem of identifying a phage to attack a specific multi-drug resistant superbug, isolating it, and preparing it for human use is involved. Research is ongoing and this forgotten therapy may hold the key for the next advance against bacteria. Without a new treatment, infections will be our next health menace and millions of us may die. Before antibiotics, a simple infection was life threatening provides it.
I have included a short Youtube video that explains how bacteriophages kill bacteria. If you are interested further, ABC’s 2020 and CTV’s W5 have documentaries exploring the future of phage therapy. In the meantime, we should all limit our antibiotic use as much as we can.