bacterial resistance to silver

[Guest guest]

Hi everyone,

When looking up some information about a bacteria, I came across some

information at PubMed about silver resistance genes. There were actually

several bacteria mentioned in article titles - Salmonella, E. coli, Serratia.

There may be more, especially among enteric (intestinal) bacteria. This

information does not seem to be common knowledge in the althealth community...so

if colloidal silver is not working for you or someone you know, resistance may

be part of the reason why.

Here is information from one article abstract, PubMed number 12829274. There

are also a number of related articles available.

Bacterial silver resistance: molecular biology and uses and misuses of silver

compounds.

FEMS Microbiol Rev. 2003 Jun;27(2-3):341-53

Resistance to silver compounds as determined by bacterial plasmids and genes has

been defined by molecular genetics. Silver resistance conferred by the

Salmonella plasmid pMGH100 involves nine genes in three transcription

units...[snip]...Of 70 random enteric isolates from a local hospital, isolates

from catheters and other Ag-exposed sites, and total genomes of enteric

bacteria, 10 have recognizable sil genes. The centrally located six genes are

found and functional in the chromosome of Escherichia coli K-12, and also occur

on the genome of E. coli O157:H7. The use of molecular epidemiological tools

will establish the range and diversity of such resistance systems in clinical

and non-clinical sources. Silver compounds are used widely as effective

antimicrobial agents to combat pathogens (bacteria, viruses and eukaryotic

microorganisms) in the clinic and for public health hygiene. Silver cations

(Ag+) are microcidal at low concentrations and used to treat burns, wounds and

ulcers. Ag is used to coat catheters to retard microbial biofilm development. Ag

is used in hygiene products including face creams, " alternative medicine " health

supplements, supermarket products for washing vegetables, and water filtration

cartridges. Ag is generally without adverse effects for humans, and argyria

(irreversible discoloration of the skin resulting from subepithelial silver

deposits) is rare and mostly of cosmetic concern.

Best wishes,

Char

www.dnafrequencies.com