Abstract:
:The pattern of invasion of human hair in vitro by the dermatophyte Microsporum gypseum was studied by transmission and scanning electron microscopy. Mycelia that invaded the hair cortex through the edge of cuticles showed a flattened "frond" growth in contrast to the filamentous form seen on ordinary laboratory media. The frond cells were characterized by the presence of vesicles formed by invaginations of plasmalemma, and lomasomes were prominent in the region adjacent to the hard keratinized tissue of the hair cortex being degraded as well. The initial perforating organ, which originated from the frond mycelium, appeared as an enlarged spherical cell which integrated with the laterally branched hyphae, as revealed by analysis of a three-dimensional model reconstructed from a series of sections. The fully developed perforating organ consisted of a column of wide and short cells which penetrated perpendicularly through the hair cortex. Through the medulla the filamentous hyphae had grown profusely in a longitudinal direction. Our studies confirm earlier light microscope observations and provide new ultrastructural details on the development of the eroding frond and the perforating organ.
journal_name
Infect Immunjournal_title
Infection and immunityauthors
Kanbe T,Tanaka Kdoi
10.1128/IAI.38.2.706-715.1982subject
Has Abstractpub_date
1982-11-01 00:00:00pages
706-15issue
2eissn
0019-9567issn
1098-5522journal_volume
38pub_type
杂志文章abstract::An immunomodulatory role of arthropod saliva has been well documented, but evidence for an effect on Plasmodium sp. infectiousness remains controversial. Mosquito saliva may orient the immune response toward a Th2 profile, thereby priming a Th2 response against subsequent antigens, including Plasmodium. Orientation to...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.06414-11
更新日期:2012-06-01 00:00:00
abstract::Normal cell polarity protects epithelial cells against Pseudomonas aeruginosa invasion and cytotoxicity. Using epithelial cell clones with selective defects in sorting of membrane constituents, and using hepatocyte growth factor pretreatment, we found that polarized susceptibility to P. aeruginosa can be altered witho...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.66.7.3443-3446.1998
更新日期:1998-07-01 00:00:00
abstract::Immunity to infection with Eimeria vermiformis was transferred in NIH mice by both the nylon wool-adherent (B-cell-enriched) and nonadherent (T-cell-enriched) fractions of lymphocytes (spleen and mesenteric lymph node) taken from infected donors. Transfer was more variable with the adherent fraction, and when contamin...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.56.7.1760-1765.1988
更新日期:1988-07-01 00:00:00
abstract::Amebic erythrophagocytosis is characteristic of invasive amebiasis, and mutants deficient in erythrocyte ingestion are avirulent. We sought to understand the molecular mechanisms underlying erythrocyte phagocytosis by Entamoeba histolytica. Following adherence to amebae, erythrocytes became round and crenulated, and p...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.73.6.3422-3430.2005
更新日期:2005-06-01 00:00:00
abstract::Escherichia coli isolates from patients with bacteriuria of pregnancy were compared by PCR with isolates from patients with community-acquired cystitis for the presence of established virulence determinants. The strains from patients with bacteriuria of pregnancy were less likely to carry genes for P-family, S-family,...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.69.2.794-799.2001
更新日期:2001-02-01 00:00:00
abstract::Once Candida albicans comes in contact with endothelial cells, it induces cellular injury. This endothelial cell injury may be a mechanism by which blood-borne organisms escape from the intravascular compartment and invade the tissue parenchyma during hematogenous infection. We have been investigating the ability of c...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.64.11.4714-4718.1996
更新日期:1996-11-01 00:00:00
abstract::Targeting an antigen to Fc receptors (FcR) can enhance the immune response to the antigen in the absence of adjuvant. Furthermore, we recently demonstrated that intranasal immunization with an FcγR-targeted antigen enhances protection against a category A intracellular mucosal pathogen, Francisella tularensis. To dete...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.05511-11
更新日期:2012-03-01 00:00:00
abstract::Vaccination with recombinant outer surface protein A (OspA) has been shown to protect mice from infection with Borrelia burgdorferi, the Lyme disease agent. To determine whether antibodies to B. burgdorferi proteins other than OspA are involved in protective immunity, antibodies to OspA were removed from protective an...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.60.2.657-661.1992
更新日期:1992-02-01 00:00:00
abstract::Infection of mice with the murine sarcoma virus (Moloney) markedly suppressed the humoral antibody response to sheep erythrocyte antigen injected 10 days after infection, when tumor size was maximal, and on day 26, when primary tumors had partially regressed. Humoral antibody response was also inhibited when antigen w...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:
更新日期:1970-03-01 00:00:00
abstract::Peptidoglycans of organisms belonging to the strictly anaerobic family Bacteroidaceae were investigated for the presence of lanthionine. Different procedures for the quantitation of lanthionine were compared. Performic acid and peroxide oxidation procedures on 35S-labeled peptidoglycan from Fusobacterium nucleatum Fev...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.36.1.114-122.1982
更新日期:1982-04-01 00:00:00
abstract::Murine cerebral malaria (CM) induced by Plasmodium berghei ANKA kills susceptible mice within 24 to 48 h of onset of symptoms and is characterized by the production of inflammatory cytokines in the brain. C57BL/6J mice are sensitive to lethal CM, while A/J mice are resistant. These strains of mice were immunized with ...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.66.12.5972-5979.1998
更新日期:1998-12-01 00:00:00
abstract::An alkali-soluble water-soluble extract of Blastomyces dermatitidis yeast-phase cell walls was tested for its ability to elicit a response in lymphocytes isolated from the peripheral blood of Blastomyces-infected guinea pigs. Sequential preparations of the antigen were reproducible and specific in the in vitro lymphoc...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.19.2.411-415.1978
更新日期:1978-02-01 00:00:00
abstract::Oligopeptides play important roles in bacterial nutrition and signaling. Using sequences from the available genome database for Mycobacterium tuberculosis H37Rv, the oligopeptide permease operon (oppBCDA) of Mycobacterium bovis BCG was cloned from a cosmid library. An opp mutant strain was constructed by homologous re...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/iai.68.2.429-436.2000
更新日期:2000-02-01 00:00:00
abstract::Interleukin-1 receptor (IL1R)-associated kinase 4 (IRAK4) is a member of the IRAK family and has an important role in inducing the production of inflammatory mediators. This kinase is downstream of MyD88, an adaptor protein essential for Toll-like receptor (TLR) function. We investigated the role of this kinase in IRA...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.00328-12
更新日期:2012-12-01 00:00:00
abstract::The adherence of invasive Escherichia coli strains 444-3 and 469-3 to human erythrocytes and to cultured HeLa and HEp-2 cells has been examined by electron microscopy. Bacteria elaborating type 1 fimbriae, glycocalyces , and nonfimbrial mannose-resistant hemagglutinins specific for human erythrocytes were identified i...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.44.3.599-608.1984
更新日期:1984-06-01 00:00:00
abstract::Active immunization with Escherichia coli-expressed recombinant outer surface protein C (OspC) of Borrelia burgdorferi has been demonstrated to confer protection against a tick-transmitted infection on laboratory animals. A previous study in this laboratory showed that OspC antibody raised against a denatured immunoge...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.67.10.5463-5469.1999
更新日期:1999-10-01 00:00:00
abstract::The extracellular adherence protein (Eap) is a multifunctional Staphylococcus aureus protein and broad-spectrum adhesin for several host matrix and plasma proteins. We investigated the interactions of full-length Eap and five recombinant tandem repeat domains with host proteins by use of surface plasmon resonance (BIA...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.00480-08
更新日期:2008-12-01 00:00:00
abstract::Leishmania-infected macrophages are potential antigen-presenting cells for CD4+ T lymphocytes, which recognize parasite antigens bound to major histocompatibility complex class II molecules (Ia). However, the intracellular sites where Ia and antigens may interact are far from clear, since parasites grow within the mod...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.59.3.764-775.1991
更新日期:1991-03-01 00:00:00
abstract::Murine embryo fibroblasts (MEF) were found to secrete tumor necrosis factor (TNF) in response to stimulation with endotoxin. Endotoxin-induced TNF production by MEF was inhibited by cycloheximide. However, reversal of the effect of this inhibitor on protein synthesis results in TNF being secreted in amounts equivalent...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.61.5.1630-1635.1993
更新日期:1993-05-01 00:00:00
abstract::In an earlier report, we had described the isolation and characterization of autolysis-defective mutants of Staphylococcus aureus (N. Mani, P. Tobin, and R.K. Jayaswal, J. Bacteriol. 175:1493-1499, 1993). In the study reported here, an autolysis-defective mutant showed attenuated virulence in a rat model of experiment...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.62.4.1406-1409.1994
更新日期:1994-04-01 00:00:00
abstract::Ureaplasma urealyticum has previously been isolated from the cultured cerebrospinal fluid of 13 of 418 newborn infants; additional bloodstream isolates were obtained from the same population. Ten of the 13 cerebrospinal fluid and 3 bloodstream isolates were available for serotyping in the present study. By the use of ...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.60.8.3472-3474.1992
更新日期:1992-08-01 00:00:00
abstract::The effect of route of administration, dosage, and number of boosts employed during immunization with the polymyxin-release form of Escherichia coli heat-labile (LT) enterotoxin on the degree and duration of protection afforded was evaluated in rats which were challenged by the ligated loop technique. Increasing the b...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.27.1.81-86.1980
更新日期:1980-01-01 00:00:00
abstract::The pattern of meningococcal surface structure expression in different microenvironments following bloodstream invasion in vivo is not known. We used immunohistochemistry to determine the expression of capsule, type IV pili, and PorA by meningococci residing in the skin lesions of children with purpura fulminans. All ...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/iai.70.9.5193-5201.2002
更新日期:2002-09-01 00:00:00
abstract::Genomics revealed the sequence of 3924 genes of the H37Rv strain of Mycobacterium tuberculosis. Proteomics complements genomics in showing which genes are really expressed, and here we show the expression of six genes not predicted by genomics, as proved by two-dimensional electrophoresis and matrix-assisted laser des...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/iai.69.9.5905-5907.2001
更新日期:2001-09-01 00:00:00
abstract::Hemin induced germination of Candida albicans blastoconidia when cells grown up to the early exponential phase were shifted from 28 to 37 degrees C (70 to 75% of cells exhibited germ tubes). N-Acetyl-D-glucosamine (GlcNAc), another inducer of myceliation in this fungus, caused a similar effect. The combination of hemi...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.65.10.4360-4364.1997
更新日期:1997-10-01 00:00:00
abstract::T cell-independent antibody responses develop rapidly, within 3 to 4 days, and are critical for preventing blood-borne pathogens from evolving into life-threatening infections. The interaction of BAFF, also known as BLyS, with its receptors BAFFR and TACI on B cells is critical for B cell homeostasis and function. Usi...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.01147-13
更新日期:2014-01-01 00:00:00
abstract::Subunits of a proline-rich coccidioidal antigen (Ag2/PRA) of Coccidioides immitis were analyzed by comparison as vaccines in mice. The optimal dose of plasmid vaccine encoding full-length Ag2/PRA was determined to be between 10 and 100 microg. Mice vaccinated with plasmids encoding amino acids (aa) 1 to 106 were as pr...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/iai.70.7.3330-3335.2002
更新日期:2002-07-01 00:00:00
abstract::Leptospirosis can activate inflammatory responses through Toll-like receptors (TLRs) and may cause renal tubulointerstitial fibrosis characterized by the accumulation of extracellular matrix (ECM). We have previously demonstrated that Leptospira santorosai serovar Shermani detergent extract stimulates ECM accumulation...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.01287-09
更新日期:2011-03-01 00:00:00
abstract::The outer membrane of pathogenic Leptospira species grown in culture media contains lipopolysaccharide (LPS), a porin (OmpL1), and several lipoproteins, including LipL36 and LipL41. The purpose of this study was to characterize the expression and distribution of these outer membrane antigens during renal infection. Ha...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.67.2.853-861.1999
更新日期:1999-02-01 00:00:00
abstract::Lewis (Le) antigens have been implicated in the pathogenesis of atrophic gastritis and gastric cancer in the setting of Helicobacter pylori infection, and H. pylori-induced anti-Le antibodies have been described that cross-react with the gastric mucosa of both mice and humans. The aim of this study was to examine the ...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.69.8.4774-4781.2001
更新日期:2001-08-01 00:00:00