Historically, the first observation of a transmissible lytic agent that is specifically active against a bacterium (Bacillus anthracis) was by a Russian microbiologist Nikolay Gamaleya in 1898. At that time, however, it was too early to make a connection to another discovery made by Dmitri Ivanovsky in 1892 and Martinus Beijerinck in 1898 on a non-bacterial pathogen infecting tobacco plants. Thus the viral world was discovered in two of the three domains of life, and our current understanding is that viruses represent the most abundant biological entities on the planet. The potential of bacteriophages for infection treatment have been recognized after the discoveries by Frederick Twort and Felix d’Hérelle in 1915 and 1917. Subsequent phage therapy developments, however, have been overshadowed by the remarkable success of antibiotics in infection control and treatment, and phage therapy research and development persisted mostly in the former Soviet Union countries, Russia and Georgia, as well as in France and Poland. The dramatic rise of antibiotic resistance and especially of multi-drug resistance among human and animal bacterial pathogens, however, challenged the position of antibiotics as a single most important pillar for infection control and treatment. Thus there is a renewed interest in phage therapy as a possible additive/alternative therapy, especially for the infections that resist routine antibiotic treatment. The basis for the revival of phage therapy is affected by a number of issues that need to be resolved before it can enter the arena, which is traditionally reserved for antibiotics. Probably the most important is the regulatory issue: How should phage therapy be regulated? Similarly to drugs? Then the co-evolving nature of phage-bacterial host relationship will be a major hurdle for the production of consistent phage formulae. Or should we resort to the phage products such as lysins and the corresponding engineered versions in order to have accurate and consistent delivery doses? We still have very limited knowledge about the pharmacodynamics of phage therapy. More data, obtained in animal models, are necessary to evaluate the phage therapy efficiency compared, for example, to antibiotics. Another aspect is the safety of phage therapy. How do phages interact with the immune system and to what costs, or benefits? What are the risks, in the course of phage therapy, of transduction of undesirable properties such as virulence or antibiotic resistance genes? How frequent is the development of bacterial host resistance during phage therapy? Understanding these and many other aspects of phage therapy, basic and applied, is the main subject of this Topic.
... Director, Michigan DOT ADIB K. KANAFANI, Cahill Professor of Civil Engineering, University of California, Berkeley HERBERT S. LEVINSON, Principal, Herbert S. Levinson Transportation Consultant, New Haven, CT SUE MCNEIL, Professor, ...
Lambin EF, Meyfroidt P,Rueda X, Blackman A, Börner J, Cerutti PO, Dietsch T, Jungmann L, Lamarque P, Lister J, et al. 2014. Effectiveness and synergies of policy instruments for land use governance in tropical regions.
This report seeks to promote discussion of the way the Air Force develops its weapon systems, manages its support resources, and conducts its wartime logistics operations.
A tutorial and reference to Java-based APIs for application software development covers RMI, IDL, JDBC, JNDI, and Java Servlets.
Collins, S., Osborne, J., Ratcliffe, M., Millar, R. and Duschl, R. (2001) 'What “ideas about science” should be taught in school science? A Delphi study of the expert community'. Paper presented at the Annual Conference of the American ...
... Washington, DC CYNTHIA L. QUARTERMAN, Administrator, Pipeline and Hazardous Materials Safety Administration, U.S.DOT PETER M. ROGOFF, Administrator, Federal Transit Administration, U.S.DOT DAVID L. STRICKLAND, Administrator, ...
ROS were long regarded as unwanted and toxic by-products of physiological metabolism. However, ROS are now recognized as central players in the complex signaling network of cells.
charles WriGht, known always as Reg, was born on 10 July 1905at Central Castra, Tasmania, one of ten children of John Forsyth Wright, a farmer, and his wife, Emma Maria, née Lewis. Reg's brother, also John Forsyth Wright, ...
Management of carbohydrate resources appears to be one critical aspect in the occupation of rainforests by hunter-gatherer peoples (Sponsel et al. 1996). Bailey and Peacock (1988) hypothesized that energy resources in general, ...
ASM/TMS Fall meeting on 'Applications of thermodynamics in the synthesis and processing of materials, Rosemont, IL, USA, 1994, pp. 371–384. [8] Odette, G. R., Liu, C. L., and Wirth, B. D., Microstructure Evolution During Irradiation, ...