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532339 occurrences (No.23 in the rank) during 5 years in the PubMed. [no cache] 500 found

267) Our previous in vitro studies showed that the adhesive behaviour of the neutrophil is modulated by soluble fibrinogen when present at a physiological concentration.

--- ABSTRACT ---

PMID:23271199 DOI:10.3233/CH-121660

2015 Clinical hemorheology and microcirculation

* Fibrinogen modulates leukocyte recruitment in vivo during the acute inflammatory response.

- Besides playing an important role in blood hemostases, fibrinogen also regulates leukocyte function in inflammation. Our previous in vitro studies showed that the adhesive behaviour of the neutrophil is modulated by soluble fibrinogen when present at a physiological concentration. This led us to propose that this plasma glycoprotein might further influence leukocyte recruitment in vivo and thus contribute to the inflammatory response. To address this in vivo, leukocyte recruitment was here investigated under acute inflammatory conditions in the absence of soluble fibrinogen in the blood circulation. For such, intravital microscopy on mesentery post-capillary venules was performed on homozygous fibrinogen α chain-deficient mice ((α-/-) mice). Acute inflammatory states were induced by perfusing platelet activating factor (PAF) over the exposed tissue. As control animals, two groups of mice expressing soluble fibrinogen in circulation were used, namely, C57BL/6 wild type animals and heterozygous fibrinogen α chain-deficient mice ((α+/-) mice). Under acute inflammatory conditions, an abnormal pattern of recruitment was observed for leukocytes in homozygous (α-/-) mice in comparison to both control groups. In fact, the former exhibited a significantly decreased number of rolling leukocytes that nevertheless, migrated with increased rolling velocities when compared to leukocytes from control animals. Consistently, homozygous mice further displayed a diminished number of adherent leukocytes than the other groups. Altogether our observations led us to conclude that leukocyte recruitment in homozygous (α-/-) mice is compromised what strongly suggests a role for soluble fibrinogen in leukocyte recruitment in inflammation.

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--- WordNet output for studies --- Overview of noun study The noun study has 10 senses (first 8 from tagged texts) 1. (90) survey, study -- (a detailed critical inspection) 2. (17) study, work -- (applying the mind to learning and understanding a subject (especially by reading); "mastering a second language requires a lot of work"; "no schools offer graduate study in interior design") 3. (6) report, study, written report -- (a written document describing the findings of some individual or group; "this accords with the recent study by Hill and Dale") 4. (6) study -- (a state of deep mental absorption; "she is in a deep study") 5. (6) study -- (a room used for reading and writing and studying; "he knocked lightly on the closed door of the study") 6. (3) discipline, subject, subject area, subject field, field, field of study, study, bailiwick -- (a branch of knowledge; "in what discipline is his doctorate?"; "teachers should be well trained in their subject"; "anthropology is the study of human beings") 7. (2) sketch, study -- (preliminary drawing for later elaboration; "he made several studies before starting to paint") 8. (1) cogitation, study -- (attentive consideration and meditation; "after much cogitation he rejected the offer") 9. study -- (someone who memorizes quickly and easily (as the lines for a part in a play); "he is a quick study") 10. study -- (a composition intended to develop one aspect of the performer's technique; "a study in spiccato bowing") Overview of verb study The verb study has 6 senses (first 6 from tagged texts) 1. (73) analyze, analyse, study, examine, canvass, canvas -- (consider in detail and subject to an analysis in order to discover essential features or meaning; "analyze a sonnet by Shakespeare"; "analyze the evidence in a criminal trial"; "analyze your real motives") 2. (17) study -- (be a student; follow a course of study; be enrolled at an institute of learning) 3. (15) study, consider -- (give careful consideration to; "consider the possibility of moving") 4. (13) learn, study, read, take -- (be a student of a certain subject; "She is reading for the bar exam") 5. (5) study, hit the books -- (learn by reading books; "He is studying geology in his room"; "I have an exam next week; I must hit the books now") 6. (2) study, meditate, contemplate -- (think intently and at length, as for spiritual purposes; "He is meditating in his study") --- WordNet end ---