Tetracyclines

Chlortetracycline, isolated from Streptomyces aureofaciens, was the first tetracycline antibiotic discovered. It has shown the most efficacy against gram-positive organisms, but is also effective on a variety of gram-negative bacteria. Resistance to chlortetracycline arises from a loss of cell wall permeability.

Doxycycline hyclate is a semisynthetic tetracycline antibiotic effective against bacteria such as Mycoplasma pneumoniae and Haemophilus influenzae. It is also a broad-spectrum inhibitor of matrix metalloproteases (MMPs). Doxycycline hyclate is routinely used to select for cells containing the pcDNA3.1 resistance plasmid in cell line 293 at an effective concentration of 2 μg/mL. It is freely soluble in aqueous solution.

Minocycline HCl is a broad-spectrum tetracycline antibiotic. It has been shown to inhibit endothelial cell proliferation and angiogenesis, MMP-3, PARP, and the replication of HIV and SIV. It has also displayed anti-inflammatory and anti-collagenase activity. Minocycline HCl is freely soluble in aqueous solution.

Oxytetracycline is a tetracycline antibiotic derived from Streptomyces rimosus. It targets gram-positive and gram-negative bacteria and several Mycoplasma species. Oxytetracycline has been used to study its resistance gene, otrA and in fluorescence analysis of liver cells.

Additionally, oxytetracycline is used as a selective agent in OGYE, a selective medium for yeasts and molds. It has been used to prevent fire blight in apples and pears and has been shown to be a better alternative to streptomycin against fire blight disease.

Oxytetracycline is a tetracycline antibiotic derived from Streptomyces rimosus. It targets gram-positive and gram-negative bacteria and several Mycoplasma species. Oxytetracycline has been used to study its resistance gene, otrA and in fluorescence analysis of liver cells.

Additionally, oxytetracycline is used as a selective agent in OGYE, a selective medium for yeasts and molds. It has been used to prevent fire blight in apples and pears and has been shown to be a better alternative to streptomycin against fire blight disease.

Oxytetracycline is a tetracycline antibiotic derived from Streptomyces rimosus. It targets gram-positive and gram-negative bacteria and several Mycoplasma species. Oxytetracycline has been used to study its resistance gene, otrA and in fluorescence analysis of liver cells.

Additionally, oxytetracycline is used as a selective agent in OGYE, a selective medium for yeasts and molds. It has been used to prevent fire blight in apples and pears and has been shown to be a better alternative to streptomycin against fire blight disease.

Tetracycline is a broad-spectrum antibiotic targeting gram-negative and gram-positive bacteria. It also displays toxicity against certain eukaryotic cells. Tetracycline is used in multidrug resistance studies and in cell culture applications as a selective agent. Additionally, it promotes expression of the P450 proteins.