In this review, we summarize the progress in developing Yersinia-based vaccine carrier strains by mutating the T3SS effector proteins of Yersinia called Yops (Yersinia outer proteins) to both attenuate the strains and to modulate the T-cell response.
Furthermore, we have previously demonstrated that during pregnancy, rat pelvic floor muscles acquire structural and functional adaptations in preparation for delivery, which likely protect against mechanical muscle injury by attenuating the strain effect.
In this work, we show that deletion of the catalytic domain of the yscN gene in Y. pestis CO92 attenuated the strain over three million-fold in the Swiss-Webster mouse model of bubonic plague.
To the contrary, we hypothesize that inappropriate antigen synthesis occurring in vivo results in sufficient shock to the metabolism of the live vector to over-attenuate the strain and destroy immunogenicity.
Further attempts to attenuate the Saito strain were made (9 ).
There are 57 nucleotide substitutions which distinguish the attenuated Sabin 1 strain from its virulent parent (the Mahoney serotype), two nucleotide substitutions attenuate the Sabin 2 strain, and 10 substitutions are involved in attenuating the Sabin 3 strain.
Deletion of capB in both F. tularensis LVS and the highly virulent SCHU S4 strain attenuate the bacteria, which are capable of inducing protection in mice against challenge with the parent strain [34], [35], [36], [37].
Reduction of the CPS by SAL may therefore attenuate the pathogenicity of KP strains.
Upregulation of the formation of 20-HETE with fibrates or transfer of wildtype CYP4A alleles from normotensive strains attenuate the development of hypertension in these animals [ 18].
Inhibition of COX activity (and therefore PGE2 release) increased mortality in K98-strain infected mice but PGE2 infusion did not attenuate the virulence of the RA strain.
However, the shredded rubber and soil mixture, dependent on the amount of rubber content, is able to reduce the soil settlement and plastic pipe's diametral strain, attenuating the pipe's accumulating strains and, finally, protecting the buried pipe from fatigue under repeated loadings.
