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1 at PL cells were haploid relative to diploid metacyclics.
2 n was associated with a high mean percent of metacyclics (66%-82%) rather than total GMPL (2.0 x 10(4
3 To study this, we measured the adhesion of metacyclic and logarithmic-phase L. major promastigotes
5 e phosphorylation specifically in infectious metacyclics and amastigotes and promoting parasite survi
6 e RNA binding protein 6 to obtain infectious metacyclics and determined their protein and mRNA repert
8 ed inoculum and, along with nondividing late metacyclics, are infectious to and exacerbate the pathol
9 could readily differentiate into infectious metacyclic cells but these were unable to establish infe
10 somes must develop into mammalian-infectious metacyclic cells in the fly's salivary glands (SGs) befo
14 Our results demonstrate that amastigotes and metacyclics efficiently enter and activate DCs of both g
20 e parasite to transform from procylic to the metacyclic forms affecting the parasite's potential to c
21 setse, including the generation of infective metacyclic forms expressing the variant surface glycopro
22 tural transmission, we used sand fly-derived metacyclic forms of L. major and preexposed the injectio
24 developmental program leading to infectious metacyclic forms preadapted to survive in the mammalian
26 eath occurred not by apoptosis or changes in metacyclic gene expression, but from catastrophic proble
28 sites develop from amastigotes to infectious metacyclics, highlighting recent findings concerning the
29 w that a mucin expressed and secreted by the metacyclic infective form of T. cruzi, AgC10, is able to
30 dermal forehead challenge infection with 107 metacyclic L. amazonensis promastigotes at 4 wk demonstr
31 the parasite inoculation site, we introduced metacyclic L. infantum chagasi promastigotes intradermal
38 d the largest changes between procyclics and metacyclics, observed at both the transcript and protein
43 te this differential effect of procyclic and metacyclic parasites in terms of IL-12 induction, both s
44 though the level of scAra caps is maximal in metacyclic parasites, scbetaAraT activity is maximal in
48 vidual cell level data also confirm that the metacyclic pool is diverse, and that each parasite expre
50 , since blocking macrophage Mac-1 diminishes metacyclic promastigote adhesion to a greater extent tha
51 lysosome but largely failed to eliminate the metacyclic promastigote life cycle stage of the parasite
52 attaching to the gut wall, to a nondividing metacyclic promastigote stage that is unable to attach t
54 ein kinases involved in differentiation from metacyclic promastigote to amastigote, growth and surviv
57 tion between myeloid-derived human DC and Lm metacyclic promastigotes (infectious-stage parasites) to
58 that: 1) they are expressed predominantly in metacyclic promastigotes (the form in the insect vector
59 n L. amazonensis enhanced differentiation of metacyclic promastigotes and amastigotes, but the parasi
61 the parasite during differentiation both to metacyclic promastigotes and to amastigotes, autophagoso
64 s leishmaniasis using 10(2) Leishmania major metacyclic promastigotes inoculated into the footpads of
67 infected intradermally in the ear with 10(5) metacyclic promastigotes of L. amazonensis together with
69 more abundantly expressed in amastigotes and metacyclic promastigotes than in procyclic promastigotes
70 e efficient adhesion of complement-opsonized metacyclic promastigotes to cells expressing both recept
71 the initial complement-dependent adhesion of metacyclic promastigotes to human monocyte-derived macro
72 igotes and, to a much lesser extent, that of metacyclic promastigotes to induce IL-12 were enhanced b
73 depends on the ability of insect-transmitted metacyclic promastigotes to invade mammalian hosts, diff
74 The stable adhesion of complement-opsonized metacyclic promastigotes to Mac-1 is a prerequisite for
76 tures of natural transmission: low dose (100 metacyclic promastigotes) and inoculation into a dermal
78 )O(2), generate a greater yield of infective metacyclic promastigotes, and have increased virulence.
79 old was also required for the development of metacyclic promastigotes, as SODA/DeltasodA cultures wer
80 ventional experimental model employing 10(6) metacyclic promastigotes, in which the rapid development
82 racellular Leishmania to mammalian-infective metacyclic promastigotes, perhaps orchestrating the clea
83 us leishmaniasis (Lm), once loaded with live metacyclic promastigotes, were found to reactivate autol
88 3' UTRs uncovered: (1) previously identified metacyclic-specific expressed genes; (2) cloned genes wh
90 t activated when VSG synthesis begins in the metacyclic stage in the tsetse fly salivary glands, are
91 of Leishmania infantum chagasi to a virulent metacyclic stage, as did the expression of PGF2alpha syn
95 ms and subsequent purification of infectious metacyclics supports the existence of an RNA-recognition
106 deficient epimastigotes readily converted to metacyclic trypomastigotes and efficiently infected mamm
108 i sp. are established after the injection of metacyclic trypomastigotes into the skin dermis by the t
109 d to extracellular amastigote-like cells and metacyclic trypomastigotes more rapidly than wild-type p
110 native conjunctival challenges with T. cruzi metacyclic trypomastigotes using a combination of immuno
111 fically reacted with a 55-kDa TcGP63 form in metacyclic trypomastigotes, suggesting stage-specific ex
115 Determination of 23 kb of sequence at the metacyclic variant antigen type 4 (MVAT) vsg expression
116 e-associated gene I (ESAG-I) family occur in metacyclic variant antigen type 4 bloodstream trypanosom
117 e of these ESAG-I mRNAs are derived from the metacyclic variant antigen type 4 variant surface glycop
119 ch parasite expresses only one of the unique metacyclic variant surface glycoprotein (mVSG) coat prot
121 Certain VSGs are preferentially expressed in metacyclic versus bloodstream stages as a result of diff
123 f Trypanosoma brucei rhodesiense expresses a metacyclic vsg as a monocistronic RNA from a promoter lo
124 The telomere-linked donor VSG 10.1 resembles metacyclic VSG expression sites, and is preceded by a cl
125 sion Site (BES)-linked VSGs and silencing of metacyclic VSGs (mVSGs) in BF cells are essential for an
126 ng metabolic enzymes exhibited expression in metacyclics with features of both procyclic and bloodstr