What's the difference between mediate and modulate?

Mediate


Definition:

  • (a.) Being between the two extremes; middle; interposed; intervening; intermediate.
  • (a.) Acting by means, or by an intervening cause or instrument; not direct or immediate; acting or suffering through an intervening agent or condition.
  • (a.) Gained or effected by a medium or condition.
  • (a.) To be in the middle, or between two; to intervene.
  • (a.) To interpose between parties, as the equal friend of each, esp. for the purpose of effecting a reconciliation or agreement; as, to mediate between nations.
  • (v. t.) To effect by mediation or interposition; to bring about as a mediator, instrument, or means; as, to mediate a peace.
  • (v. t.) To divide into two equal parts.

Example Sentences:

  • (1) Stimulation of human leukocytes with various chemical mediators such as TPA, f-Met-Leu-Phe, LTB4, etc.
  • (2) Fibulin is a potential mediator of interactions between adhesion receptors and the cytoskeleton.
  • (3) Patients with papillary carcinoma with a good cell-mediated immune response occurred with much lower infiltration of the tumor boundary with lymphocyte whereas the follicular carcinoma less cell-mediated immunity was associated with dense lymphocytic infiltration, suggesting the biological relevance of lymphocytic infiltration may be different for the two histologic variants.
  • (4) The hypothesis that proteins are critical targets in free radical mediated cytolysis was tested using U937 mononuclear phagocytes as targets and iron together with hydrogen peroxide to generate radicals.
  • (5) We have investigated the effect of methimazole (MMI) on cell-mediated immunity and ascertained the mechanisms of immunosuppression produced by the drug.
  • (6) We determined whether serological investigations can assist to distinguish between chronic idiopathic autoimmune thrombocytopenia (cAITP) and immune-mediated thrombocytopenia in patients at risk to develop systemic lupus erythematosus (SLE); 82 patients were seen in this institution for the evaluation of immune thrombocytopenia.
  • (7) IgE-mediated acute systemic reactions to penicillin continue to be an important clinical problem.
  • (8) This induction is sensitive to actinomycin D but not to protein synthesis inhibitor puromycin, indicating an effect of estradiol at the transcriptional level, possibly mediated by the estrogen receptor.
  • (9) We sought additional evidence for an inverse relationship between functional CTL-target cell affinity on the one hand, and susceptibility of the CTL-mediated killing to inhibition by alpha LFA-1 and alpha Lyt-2,3 monoclonal antibodies on the other hand.
  • (10) Mannose receptor mediated uptake by the reticuloendothelial system has been suggested as an explanation for the rapid removal of ricin A chain antibody conjugates from the circulation after their administration.
  • (11) However, direct measurements of mediator release should be carried out to reach a firm conclusion.
  • (12) In addition to their involvement in thrombosis, activated platelets release growth factors, most notably a platelet-derived growth factor (PDGF) which may be the principal mediator of smooth muscle cell migration from the media into the intima and of smooth muscle cell proliferation in the intima as well as of vasoconstriction.
  • (13) Glutathion peroxidase and p-phenylenediamide-mediated peroxidase (PPD-peroxidase) were normal in leucocytes of 1 HPS patient.
  • (14) But MH162 was more effective than MRK16 in lymphocyte-mediated lysis of the MDR cells.
  • (15) Thus, human bronchial epithelial cells can express the IL-8 gene, with expression in response to the inflammatory mediator TNF regulated mainly at the transcriptional level, and with elements within the 5'-flanking region of the gene that are directly or indirectly modulated by the TNF signal.
  • (16) Tumour necrosis factor (TNF), a polypeptide produced by mononuclear phagocytes, has been implicated as an important mediator of inflammatory processes and of clinical manifestations in acute infectious diseases.
  • (17) From these results, it was suggested that the inhibitory effect of Cd on in vitro calcification of MC3T3-E1 cells may be due to both a depression of cell-mediated calcification and a decrease in physiochemical mineral deposition.
  • (18) injection of various inflammatory mediators, the vasopressor effect of i.a.
  • (19) It is concluded that fibroblast replication is an important mechanism leading to the pathologic fibrosis seen in graft versus host disease and, by analogy, probably other types of immunologically mediated fibrosis.
  • (20) The authors followed up the occurrence of inflammation-mediated osteopenia (IMO) in young and adult rats weighing 50 g and 150 g, respectively.

Modulate


Definition:

  • (v. t.) To form, as sound, to a certain key, or to a certain portion.
  • (v. t.) To vary or inflect in a natural, customary, or musical manner; as, the organs of speech modulate the voice in reading or speaking.
  • (v. i.) To pass from one key into another.

Example Sentences:

  • (1) The variation in thickness of the LLFL may modulate the species causing damage to the cells below it.
  • (2) These included bringing in the A* grade, reducing the number of modules from six to four, and a greater attempt to assess the whole course at the end.
  • (3) The vascular endothelium is capable of regulating tissue perfusion by the release of endothelium-derived relaxing factor to modulate vasomotor tone of the resistance vasculature.
  • (4) Quantitative determinations indicate that the amount of PBG-D mRNA is modulated both by the erythroid nature of the tissue and by cell proliferation, probably at the transcriptional level.
  • (5) Gel filtration of the 40,000 rpm supernatant fraction of a homogenate of rat cerebral cortex on a Sepharose 6B column yielded two fractions: fraction II with the "Ca(2+) plus Mg(2+)-dependent" phosphodiesterase activity and fraction III containing its modulator.
  • (6) This modulation results from repetitive, alternating bursts of excitatory and inhibitory postsynaptic potentials, which are caused at least in part by synaptic feedback to the command neurons from identified classes of neurons in the feeding network.
  • (7) Modulation of the voltage-gated K+ conductance in T-lymphocytes by substance P was examined.
  • (8) Thus, human bronchial epithelial cells can express the IL-8 gene, with expression in response to the inflammatory mediator TNF regulated mainly at the transcriptional level, and with elements within the 5'-flanking region of the gene that are directly or indirectly modulated by the TNF signal.
  • (9) This study examines the role of sex hormones in modulating the expression of autoimmunity in NZB x NZW F1 mice.
  • (10) More needs to be known about the direct and indirect modulation of cytokine production by cyclosporin A in connective tissues, in order to understand its potential value in clinical disorders.
  • (11) We suggest that neuronal PACAP may serve to modulate motor activity and secretion in the lower esophageal sphincter region.
  • (12) Furthermore, modulation of the assay by prostaglandin E2 (PGE2) was used to increase its sensitivity.
  • (13) Masking experiments are demonstrated for electrical frequency-modulated tone bursts from 1,000 to 10,000 cps and from 10,000 to 1,000 cps with superimposed clicks.
  • (14) From these results, BM-Eo are naive and seem to be a good indicator for eosinophilotaxis and its modulation.
  • (15) Administration of modulators in combinations of threes resulted in still further reduction of tumor incidences to 22.2% (SS + MC + AA), 19.2% (SS + MC + RA), 16% (MC + AA + RA) and 23.1% (AA + RA + SS).
  • (16) These findings suggest that activation of protein kinase C may act as a feedback inhibitor to modulate ligand-mediated increases in [Ca2+]i.
  • (17) These studies demonstrate that vWF interaction with GP Ib may be modulated by botrocetin binding to a discontinuous site located within residues 539-643.
  • (18) This contrasts sharply with the reduction in both the frequency and surface area of sensory neuron active zones that accompanies long-term habituation, and suggests that modulation of active zone number and size may be an anatomical correlate that lies in the long-term domain.
  • (19) Thus, it appears that the modulation of the phosphorylation of these cytosolic proteins represents an essential step in the regulation of T lymphocyte activation.
  • (20) Energy conformational calculations on these compounds were also carried out using the empirical energy program called MOLMEC, in order to better understand how the 4-R substituents modulate receptor binding affinities and efficacies.