• Its effectiveness seems to be due to the unique properties of cisplatin, which enters cells via multiple pathways and forms multiple different DNA-platinum adducts while initiating a cellular self-defense system by activating or silencing a variety of different genes, resulting in dramatic epigenetic and/or genetic alternations. (aspetjournals.org)
  • These findings add to the information about the role of the phenylpropanoid pathway in the evolution of plant defense mechanisms against insect pests and provide substantial potential for the functional characterization of several not yet resolved alternative pathways in plant defenses. (biomedcentral.com)
  • With respect to the protective mechanisms of gastroduodenal mucosa, the concept of prostaglandin cytoprotection or the role of free radicals would be of great importance. (nii.ac.jp)
  • Chakraborty U, Pradhan B (2012) Oxidative stress in five wheat varieties ( Triticum aestivum L.) exposed to water stress and study of their antioxidant enzyme defense system, water stress responsive metabolites and H 2 O 2 accumulation. (springer.com)
  • From Wikipedia, the free encyclopedia In Freudian psychoanalytic theory, defense mechanisms are unconscious psychological strategies brought into play by various entities to cope with reality and to maintain self-image. (scribd.com)
  • To reduce these negative feelings, the ego might use defense mechanisms (conscious or unconscious blockage of the id impulses). (scribd.com)
  • This process ranges from fully conscious (e.g. to present an external defense against ridicule from others) to mostly unconscious (e.g. to create a block against internal feelings of guilt or shame). (wikipedia.org)
  • The African crested rat is a fascinating example of how a species can evolve a unique set of defenses in response to pressure from predators," said study co-author Tim O'Brien of the Wildlife Conservation Society in a WCS release Tuesday. (ehspest.com)
  • These are the building blocks for cells and form the molecular mechanisms of life. (phys.org)
  • Furthermore, the mechanisms of endogenous prostaglandin production have been revealed by employing this system from the standpoint of molecular biology. (nii.ac.jp)
  • The importance of specialized phenolic compounds for plant chemical defense has been the subject of intensive study in angiosperms ([ 11 , 12 ]), however, knowledge in gymnosperm lineages is sparse. (biomedcentral.com)
  • Defense mechanisms are sometimes confused with coping strategies. (scribd.com)
  • For poplar, gene families involved in phenylpropanoid biosynthesis exhibit an expansion and diversification in comparison to short-lived annuals [ 14 ], suggesting diversification of chemical defense strategies. (biomedcentral.com)
  • What we have here is an environmentally compatible component of a new generation of anti-fouling coatings that simulate the natural defense systems employed by marine organisms. (eurekalert.org)
  • In psychology and logic, rationalization or rationalisation (also known as making excuses) is a defense mechanism in which controversial behaviors or feelings are justified and explained in a seemingly rational or logical manner to avoid the true explanation, and are made consciously tolerable-or even admirable and superior-by plausible means. (wikipedia.org)
  • By means of this model organism , they have uncovered the existence of a mechanism that repairs proteins in the cell that have been damaged by oxygen. (phys.org)
  • The purpose of ego defense mechanisms is to protect the mind/self/ego from anxiety, social sanctions or to provide a refuge from a situation with which one cannot currently cope. (scribd.com)
  • When anxiety becomes too overwhelming, it is then the place of the ego to employ defense mechanisms to protect the individual. (scribd.com)
  • Studying E. coli , the team of scientists, under the leadership of Jean-François Collet of the de Duve Institute (UCLouvain), has identified how two proteins - DsbG and DsbC - form the basis of an ingenious repair mechanism. (phys.org)
  • In trees, a substantial amount of carbon is directed towards production of phenolics for development and defense. (biomedcentral.com)
  • An ego defense mechanism becomes pathological only when its persistent use leads to maladaptive behavior such that the physical and/or mental health of the individual is adversely affected. (scribd.com)
  • This natural defense process has been mimicked by the Mainz-based team of chemists using nanoparticles of cerium dioxide. (eurekalert.org)