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1990 (1)
1984 (1)
1Author    T. K. Mandal, S. N. ChatterjeeRequires cookie*
 Title    Electron Microscopic Study of the Polymyxin Treated Goat Erythrocytes  
 Abstract    Polymyxin B produced dose dependent changes in the surface topography o f the goat erythrocyte cells. Transformation from the normal biconcave discs through crenated structures to the final rounded or spherical shape was recorded by scanning electron m icroscopy. A m axim um o f three to four crenations per cell was recorded corresponding to a polym yxin dose o f 15.62 ng/ml. Transmission electron m icroscopy o f the ultrathin sections o f treated or untreated erythrocytes indicated that the crenations were formed by protrusions o f the plasma membrane, occurring presumably because o f the local increase o f m em brane fluidity after polym yxin treatment. Changes in the shape o f the erythrocytes to the ultim ate rounded forms were also indicated by the transmission electron microscopy. 
  Reference    Z. Naturforsch. 39c, 776—7 (1984); received April 24 1984 
  Published    1984 
  Keywords    Polymyxin B, Erythrocytes, Surface Topography, Electron M icroscopy 
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 TEI-XML for    default:Reihe_C/39/ZNC-1984-39c-0776.pdf 
 Identifier    ZNC-1984-39c-0776 
 Volume    39 
2Author    T.K M AndalRequires cookie*
 Title    Electron Microscopic Study of the Polymyxin T reated Vibrio cholerae Cells  
 Abstract    Polymyxin B produces dose dependent changes in the surface topography o f pathogenic Vibrio cholerae cells. The susceptibilities o f various vibrio strains to PB are also studied through analytical techniques. Statistical analysis shows significant differences among the four vibrios with regard to their sensitivities to PB. the classical strains being the most sensitive. Treating the classical strain with subinhibitory concentration o f PB, we observed with both SEM and TEM that the normal sm ooth surface o f the cell envelope develops some protruded structures (blebs and crenations). Further the TEM study o f the ultrathin sections reveal that the rod like projections are formed by protrusions o f the outer-membrane o f the cell wall. 
  Reference    Z. Naturforsch. 45c, 902 (1990); received October 31 1989/January 3 1990 
  Published    1990 
  Keywords    Polymyxin B, Vibrios, Sensitivities, Lysis and Viability, Surface Topography, Blebs and Crenations 
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 TEI-XML for    default:Reihe_C/45/ZNC-1990-45c-0902.pdf 
 Identifier    ZNC-1990-45c-0902 
 Volume    45