The inVitro experiment was for 5 days at a low dose. ...
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While this was an inVitro trial, I would like to emphasis that this antibiotic has been used for years and extended the lives of cystic fibrosis patients for years. As stated in https://medicalxpres...fNKq7VyBWp6xw,
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Also,
"At a single low-dosage, Azithromycin was shown to effectively kill and eliminate the senescent cells, with an efficiency of 97 percent.
The last statement by medicalexpress.com does not correspond to the reality described in the original paper. The same goes for your own opening statement, "The inVitro experiment was for 5 days at a low dose." Not a low dose at all! Translated into in vivo pharmacology, the dose needed is several times higher than the commonly used dose for infection (calculated in the beginning of the thread). Again, at the half the high dosage they used, there was no noticeable senolytic effects.
Which is not to say that it might, after all, show a senolytic effect on humans taking normal dosages, so I'm all ears about the effects it had on you guys! But please don't wrap it into a semblance of a legitimate scientific reference, coz it's misleading.
...The fascinating thing here is that bacteria are cells too, which is to point out the obvious. But the implications are very interesting. So Az can get rid of bacterial cells alongside senescent cells, but not normal cells. That is a very juicy piece of scientific evidence that leads to all kinds of interesting questions. Is there some fundamental similarity between senescent cells and bacterial cells? Is there some interaction between the two? Do the two types of cells have some mechanisms in common?
at usual dosages used, AZ is considered bacteriostatic not bactericidal. It does not kill the bacteria but inhibits their growth by binding "to the 50S subunit of the bacterial ribosome, thus inhibiting translation of mRNA" (google). 50S subunit of the bacterial ribosome is a common target for many antibiotics, the other one is 30S subunit. Both are specific to prokaryotes.
Re "fundamental similarity between senescent cells and bacterial cells" there is none, but there is a fundamental difference, and. other than size, it is the difference between eukaryotes and prokaryotes. There is a similarity between the mitochondria and bacteria though, including the structure of their membranes.
Edited by xEva, 29 January 2019 - 08:23 PM.