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Thursday, January 29, 2015

U.S President's higher budget allocation for antibiotic resistance

Contributed by: Dr. Akilesh Ramasamy & Dr. Tamhankar


FACT SHEET: President’s 2016 Budget Proposes Historic Investment to Combat Antibiotic-Resistant Bacteria to Protect Public Health
Nearly double the amount of Federal Funding for fighting antibiotic resistance and preventing has been allocated by U.S President in 2016 budget.

Wednesday, January 14, 2015

Antibiotics may impair effectiveness of Flu vaccines - A study in ice revels.

Contributed by: Dr. Akilesh R & Dr. Tamhankar

A new study suggests antibiotics may hinder the effectiveness of flu vaccines!
Story image
Via Creative Common
“Our results suggest that the gut microbiome may be exerting a powerful effect on immunity to vaccination in humans, even immunity induced by a vaccine that is given at a distant site,” says Pulendran, Charles Howard Candler professor of pathology and laboratory medicine at Emory University School of Medicine and Yerkes National Primate Research Center.
In an earlier study involving humans, it was found that expression of the gene encoding TLR5 was correlated to increased antibody response weeks later. TLR5 encodes a protein that enables immune cells to sense flagellin, the main structural protein for the whips (flagella) many bacteria use to propel themselves.

Antibiotics may remove most of the gut bacteria which in turn may affect expression of genes encoding TLR5. In the current study on mice, they found that mice lacking TLR5 had diminished response to flu vaccine.

Friday, January 9, 2015

Teixobactin - A new 'anti-resistance' antibiotic which is a breakthrough in decades discovered.

Contributed by: Dr. Akilesh Ramasamy & Dr. Tamhankar

drug resistant microbesFor decades there has been a stagnation in the antibiotic discovery. As said earlier in our blog, scientists started looking into the depths of the ocean, and in the soil for newer antibiotics. A major hurdle in the development of antibiotics is the source. Most antibiotics are developed from culturable microbes. Interestingly, about 99% of the environmental bacteria are not culturable. The discoveres of the new antibiotic say that they developed several methods to grow these uncultured organisms bu cultivation in situ or by using specific growth factors. In the process, they discovered a new antibiotic that they named teixobactin.

The mechanism of action of the antibiotic makes it unique and resistant to development of resistance.