What's the difference between organ and senescence?

Organ


Definition:

  • (n.) An instrument or medium by which some important action is performed, or an important end accomplished; as, legislatures, courts, armies, taxgatherers, etc., are organs of government.
  • (n.) A natural part or structure in an animal or a plant, capable of performing some special action (termed its function), which is essential to the life or well-being of the whole; as, the heart, lungs, etc., are organs of animals; the root, stem, foliage, etc., are organs of plants.
  • (n.) A component part performing an essential office in the working of any complex machine; as, the cylinder, valves, crank, etc., are organs of the steam engine.
  • (n.) A medium of communication between one person or body and another; as, the secretary of state is the organ of communication between the government and a foreign power; a newspaper is the organ of its editor, or of a party, sect, etc.
  • (n.) A wind instrument containing numerous pipes of various dimensions and kinds, which are filled with wind from a bellows, and played upon by means of keys similar to those of a piano, and sometimes by foot keys or pedals; -- formerly used in the plural, each pipe being considired an organ.
  • (v. t.) To supply with an organ or organs; to fit with organs; to organize.

Example Sentences:

  • (1) The high amino acid levels in the cells suggest that these cells act as inter-organ transporters and reservoirs of amino acids, they have a different role in their handling and metabolism from those of mammals.
  • (2) These organic compounds were found to be stable on the sorbent tubes for at least seven days.
  • (3) The main clinical features pertaining to the concept of the "psycho-organic syndrome" (POS) were investigated in a sample of children who suffered from severe craniocerebral trauma.
  • (4) After 3 and 6 months, blood collected by cardiocentesis using ether anesthesia and then sacrificed to remove CNS and internal organs.
  • (5) Addition of phospholipase A2 from Vipera russelli venom led to a significant increase in the activity of guanylate cyclase in various rat organs.
  • (6) For the first time it was organized on the basis of population.
  • (7) Acceptance of less than ideal donors is ill-advised even though rejection of such donors conflicts with the current shortage of organs.
  • (8) There is no evidence that health-maintenance organizations reduce admissions in discretionary or "unnecessary" categories; instead, the data suggest lower admission rates across the board.
  • (9) We conclude that chloramphenicol resistance encoded by Tn1696 is due to a permeability barrier and hypothesize that the gene from P. aeruginosa may share a common ancestral origin with these genes from other gram-negative organisms.
  • (10) Recovery of CV-3988 from plasma averaged 81.7% for the column procedure and 40% for the organic extraction.
  • (11) One of the main users is coastal planning organizations and conservation organizations that are working on coral reefs.
  • (12) Infection with opportunistic organisms, either singly or in combination, is known to occur in immunocompromised patients.
  • (13) The causative organisms included viruses, fungi, and bacteria of both high and low pathogenicity.
  • (14) A chronic cannulation procedure is described which allows for sampling vomeronasal organ (VNO) contents repeatedly in freely moving conscious subjects.
  • (15) Neither Brucella organisms, nor increased numbers of neutrophils could be found in semen samples collected from the experimental animals.
  • (16) The lineage and clonality of Hodgkin's disease (HD) were investigated by analyzing the organization of the immunoglobulin and T-cell receptor beta-chain (T beta) gene loci in 18 cases of HD, and for comparison, in a panel of 103 cases of B- and T-cell non-Hodgkin's lymphomas (NHLs) and lymphoid leukemias (LLs).
  • (17) A review is made from literature and an inventory of psychological and organic factors implicated in this pathology.
  • (18) The authors conclude that H. pylori alone causes little or no effect on an intact gastric mucosa in the rat, that either intact organisms or bacteria-free filtrates cause similar prolongation and delayed healing of pre-existing ulcers with active chronic inflammation, and that the presence of predisposing factors leading to disruption of gastric mucosal integrity may be required for the H. pylori enhancement of inflammation and tissue damage in the stomach.
  • (19) Data is available to support the early influences of enamel organ epithelium upon a responding mesenchyme in the determination of dental morphogenetic fields (Dryburg, 1967; Miller, 1969).
  • (20) The four deaths were not related to the injuries of parenchymatous organs.

Senescence


Definition:

  • (n.) The state of growing old; decay by time.

Example Sentences:

  • (1) The proliferation of this cell type may represent an escape from the senescence pathway and progression to immortal tumor cells.
  • (2) In senescent rats, however, the proportions of salt-soluble and detergent-soluble AChE may differ from those in young rats.
  • (3) In addition, we have shown that long-lived, presumably non-senescent, strains do not arise by suppressor mutation, but lose senescence plasmid DNA by another mechanism.
  • (4) Senescent (26-28 months) Fischer 344 rats were shown to have a lower density of D2 sites (-36%) without any change in affinity in membranes prepared from homogenized caudate-putamen (CPU), as compared to young adult (5-6 months) rats.
  • (5) The cell cycle-dependent changes in the transglutaminase mRNA levels strongly support the implicated involvement of the enzyme in cell growth, differentiation, and senescence.
  • (6) The increased levels of HK1 could affect other erythrocyte metabolic pathways slowing down the physiological rate of cellular senescence and result in increased activity levels of other cell-age-dependent enzymes.
  • (7) Advancing age was associated with a reduction in cell proliferative responses to PHA in both substrains, although the rate of decline was significantly more rapid in the senescence-prone animals.
  • (8) Instead of degenerative changes, these results show an activation of the vasopressinergic system in senescence and in SDAT patients, similar to earlier observations in the aged rat and in accordance with a rise in human neurophysin and VP levels reported recently.
  • (9) Thus, constitutive expression of specific cytochrome P450 genes is repressed or activated in senescent rats.
  • (10) Mild daily exercise, maintained throughout adult life into early senescence, attenuates muscle atrophy and promotes adaptive enzymatic changes in atrophying muscles.
  • (11) A second set of experiments which involved the injection of E2 into senescent male as well as female rats indicated that there were no sex differences in improvements in inclined screen performance, and that once the E2 injections were discontinued, performance returned to preadministration levels.
  • (12) Additionally, analysis of the multiple steps occurring in the El cultures, as well as in the emergence of the continuous cell lines, could potentially elucidate the processes occurring during human epithelial cell carcinogenesis and escape from senescence.
  • (13) Significant anamnestic SIgA responses were shown after oral immunization with DNP-BGG in adult rats, but was not observed in the senescent and midlife (10-12 months) rats.
  • (14) Modulation of cellular senescence by growth factors, hormones, and genetic manipulation is contrasted, but newer studies in oncogene involvement are omitted.
  • (15) Under the same conditions, PM from senescent mice generated 62% of the initial O2- produced in response to zymosan, and 45% in response to OZ.
  • (16) Untreated cells, or cells treated with MCA or TPA only, usually became senescent around 6-8 weeks after plating and died, but those treated with both MCA and TPA became immortalised and underwent transformation to a phenotype capable of growth in soft agar.
  • (17) Because immune senescence most profoundly affects T lymphocyte functions, we suspected that LIA production would decline with age.
  • (18) Abnormal granular structures, which stained positively with periodic acid-Schiff (PAS-positive granular structures; PGS), were observed in the brain of senescence accelerated mouse (SAM).
  • (19) In senescent females the number of small IMPs was decreased in the perikarya and dendritic shafts compared to young females while the number of large particles was increased in the outer leaflet of the membrane of dendritic shafts, reaching values similar to those observed in males.
  • (20) Our data suggest that the release of u-PA antigen by human macrovascular endothelial cells can be used as an indicator of cell senescence.