FACTORS AFFECTING GROWTH OF STAPHYLOCOCCUS AUREUS L FORMS ON SEMIDEFINED MEDIUM

Factors affecting the persistence of Staphylococcus aureus on fabrics.

The persistence of Staphylococcus aureus (Smith) on wool blanket, wool gabardine, cotton sheeting, cotton knit jersey, cotton terry cloth, and cotton wash-and-wear fabrics was studied. The fabrics were exposed to bacterial populations by three methods: direct contact, aerosol, and a lyophilized mixture of bacteria and dust having a high content of textile fibers. The contaminated fabrics were h...

Cell-wall deficiencies in L-forms of Staphylococcus aureus.

Factors affecting sensitivity of Staphylococcus aureus 196E to polyphosphates.

The effect of polyphosphates (eight compounds) on growth of Staphylococcus aureus 196E in brain heart infusion broth was studied. The organism was sensitive (in decreasing order) to chain polyphosphates with 21, 3, 13, and 15 PO4 groups, and bactericidal effects were observed with 0.5% of these compounds. No inhibition was effected by PPi or a metaphosphate. The inhibitory effects were pH depen...

Factors affecting the collagen binding capacity of Staphylococcus aureus.

To determine whether the ability of Staphylococcus aureus to bind collagen involves an adhesin other than the collagen adhesin encoded by cna, we examined the collagen binding capacity (CBC) of 32 strains of S. aureus. With only two exceptions, a high CBC corresponded with the presence of cna. Both exceptions involved cna-positive strains with a low CBC. The first was a single strain (ACH5) tha...

Inactivation of vancomycin-induced unstable L-forms of Staphylococcus aureus by horse serum

Substitution at codon Ser315 of katG gene, a reliable marker for isoniazid (INH) resistance and proliferate in spite of the loss of cell wall is called an L- form. Unstable L- forms  can convert to normal cells but stble L-forms can not.cell wall - deffective state may be induced spontaneously or through the action of an appropriate agent such as antibiotic interfering with the synthesis of cel...