Words similar to senescence
Example sentences for: senescence
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As recently indicated [ 30 ] , certain types of placental abnormality have also been ascribed to the villous immaturity (low or no Thy-1 differentiation protein expression in placental villi and a lack of blood sinusoid dilatation - PT4, see above) accompanied by an existing (diabetes mellitus) or absent placental hypertrophy (intrauterine growth retardation) - Table 1. However, it has been suggested that although chronic placental adaptations may be successful for the fetal survival, e.g. in placental senescence or maternal diabetes, they may lead to adverse outcomes later in the life of an individual [ 22 ] . Therefore, although it might not be apparent in the newborn, the abnormal placenta may indicate a burden for the future of an individual and for the quality of the human population.
It is possible that the higher expression levels observed during stem and leaf senescence are due to suppression of photosynthesis activity.
The WRKY transcription factors are involved in defense, wounding, senescence and plant development [ 7 16 70 71 72 73 ] . There are 70 genes with a WRKY domain in the Arabidopsis genome and six of them (WRKY15, 25, 33, 46, 62, 70) are in the stress cDNA collection.
Though apoptosis in adult muscles has been described, and may result from changes within bcl2/bax system, alteration in pathways that regulate differentiation of muscle cells, changes in the myonuclei, and the nature of pathways inducing senescence of skeletal muscles are still far from being clear [ 14 ] .
These include DNA damage caused by Ionizing Radiation and genotoxic agents [ 1], by expression of activated oncogenes such as ras or myc [ 2], or during progression of primary cells to senescence [ 3].
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