Bacterial enhancers biological function

It is remarkable that a bacterial Na+-coupled proline transporter is more homologous to a mammalian amino acid (or glucose transporter) than are the Na+-depend-ent amino acid transport systems to NaCl-coupled amino acid transporters. The diversity of the ion requirement from a single Na+ to three different ion requirements for transport of some neurotransmitter amines argues for an adaption of a biologically successful mechanism to achieve specialized functions with enhanced sensitivity and selectivity. 

Sesquiterpenoids have been related with medicinal plants with different health applications, mainly anti-inflammatory [87], anti-HIV [88], antibacterial [89], and antitumor activity [88]. Up to date, no study has covered the biological activity of sesquiterpenoids from Vitis vinifera L grsLpes. Sesquiterpenoids such as famesol and nerolidol have been reported to have the ability to enhance bacterial permeability and susceptibility to exogenous antimicrobial compounds. These compounds increase the susceptibility of Staphylococcus aureus and Escherichia coli to antibiotics by disrupting the normal barrier function of the bacterial ceU membrane, allowing permeation into the cell of exogenous solutes such as antibiotics [90]. 

EOs too protect the plants against bacterial, fungal or insect invasion. Their use as food preservative and in traditional medicine is also very well known only because of their antimicrobial effects. In addition, they also possess biological activities as antioxidants, as hypocholesterolemics, as stimulant of digestive systems and as liver function enhancer (Craig 1999 Ramakrishna et al. 2003 Hernandez et al. 2004). 

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