Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0038362 (stomatitis)
 8,852 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The antiherpesvirus activity of CP-20,961 [N,N-dioctadecyl-N',N'-bis (2-hydroxyethyl) propanediamine, or Avridine] was investigated in cultured guinea pig embryo (GPE) cells. Plaque formation of herpes simplex virus type 1 (HSV1) and type 2 (HSV2) was inhibited, but vesicular stomatitis virus replication was not inhibited, in GPE cells treated with CP-20,961 before infection. The ID50 concentration of CP-20,961 for HSV was about 50 micrograms/ml for 3-4 days of pretreatment. After virus adsorption and penetration, the same concentration of CP-20,961 had no effect on HSV plaque formation. The compound showed no detergent-like properties nor did it elicit any detectable interferon activity. Thus, the anti-HSV activity of CP-20,961 appeared to be associated with blocking the adsorption or penetration of the virus or both.
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PMID:Antiviral activity of CP-20,961 against herpes simplex viruses in vitro. 298 59

Cell lines persistently infected with foot-and-mouth disease virus (FMDV) have been established by growth of BHK-21 (c-13) or IBRS-2 (c-26) that survived standard cytolytic infections with FMDV. They maintain cytoplasmic FMDV RNA sequences, as shown by dot blot hybridization tests, using cloned FMDV cDNA as probes. Cell line C1-BHK-Rc1 was derived by infection of cloned BHK-21 c1 cells and plaque-purified FMDV C-S8 c1. Indirect immunofluorescence assays indicated the presence of FMDV antigens. It was resistant to superinfection by FMDV C-S8 c1, O-S7, or A5, but not by encephalomyocarditis virus (EMCV), vesicular stomatitis virus (VSV), or Semliki forest virus (SFV). Infectious FMDV was detected in the culture medium only up to cell passage 65. The virus isolated from C1-BHK-Rc1 cells showed decreased plaque size and diminished yield in infections at 42 degrees. Multiple mutations in the intracellular FMDV RNA have been detected by T1 oligonucleotide fingerprinting of genomic RNA segments hybridized to FMDV cDNA fragments. At late cell passages, when no infectious FMDV is detected, cells continue to express viral antigens and FMDV RNAs with deletions of up to 3 kb have been identified by Northern blot analysis. We conclude that persistent infections of cell cultures with FMDV are readily established and that multiple genetic and phenotypic variations occur in the virus during persistence.
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PMID:Establishment of cell lines persistently infected with foot-and-mouth disease virus. 299 Jan

The human B-lymphoblastoid cell line Raji is nonpermissive for infection by vesicular stomatitis virus (VSV). The VSV particles released from Raji cells display a more heterogeneous distribution in equilibrium sucrose density gradients than particles released from BHK cells. The particles released from Raji cells contain approximately one-half to one-third as much viral matrix protein, relative to the nucleocapsid protein, as is normal. They also contain a higher proportion of the unglycosylated form of the G protein. The particles released from Raji cells are unstable and many disintegrate in the growth medium. Most of them deform when subjected to ultracentrifugation prior to fixation. The ratio of plaque-forming units to physical particles is much lower for the virions released from Raji cells.
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PMID:Nonpermissive infection of lymphoblastoid cells by vesicular stomatitis virus. II. Effect on viral morphogenesis. 299 13

The influence of cimetidine on antiviral activity of leukocyte interferon (IFN-alpha (Le] was studied in plaque-reduction assays using Utrecht (U) amnion cells challenged with vesicular stomatitis virus (VSV) and in CPE inhibition assays using A549 cells challenged with encephalomyocarditis (EMC) virus and WISH cells challenged with VSV. The IFN-alpha (Le)-induced antiviral activity was slightly enhanced in cells treated with cimetidine, whereas cimetidine treatment alone did not show any antiviral effect. The observed titer (OT) was significantly higher (p less than 0.05) in cells treated with cimetidine together with IFN-alpha (Le) compared with the control without cimetidine. The effect of cimetidine on IFN-alpha (Le)-induced cell growth inhibition was studied on Daudi (a Burkitt's lymphoma cell line) and on G361 (a melanoma cell line) cells. The growth of these cells was slightly suppressed by cimetidine alone. When cells were treated with IFN-alpha (Le)/cimetidine, the cell growth inhibition rates were significantly higher (p less than 0.02) than the rates obtained with IFN-alpha (Le) or cimetidine alone. These results indicate that cimetidine can enhance the antiviral as well as the antiproliferative activities of IFN-alpha (Le) in "in vitro" studies.
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PMID:Antiviral and antiproliferative activities of human leukocyte interferon potentiated by cimetidine in vitro. 299 35

We developed an enzyme-linked immunosorbent assay (ELISA) that was capable of detecting immunoglobulin M (IgM) antibody to vesicular stomatitis virus (VSV) in the sera of experimentally and naturally infected cattle and horses. The detection of IgM in the sera of these animals permitted an estimate of the recency of infection by VSV serotype New Jersey. A VSV serotype New Jersey epizootic strain isolated from a horse and passed once in an Aedes albopictus cell line was used to infect a horse and a calf. Sera from these animals were used to standardize the ELISA. This assay was used to test sera from cattle and horses involved in the 1982 VSV epizootic. Comparative antibody titrations were performed by three systems: the serum-dilution plaque-reduction neutralization, complement fixation, and indirect immunofluorescent tests. The antibody titers by neutralization and the ELISA were comparable for the period that IgM was present; when IgM ELISA titers diminished, the neutralization titers remained high. The complement fixation and indirect immunofluorescent antibody titers followed closely the IgM pattern determined by the ELISA. The capture IgM ELISA is applicable for the rapid detection of IgM antibody to VSV in cattle and horses and is a useful assay of recent infection.
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PMID:Recent vesicular stomatitis virus infection detected by immunoglobulin M antibody capture enzyme-linked immunosorbent assay. 300 Nov 32

An infectious center viral plaque assay has been utilized to quantitate activated T suppressor (Ts) cells. This assay is based on two observations. Namely, resting T cells do not serve as good replicative hosts for many viruses, including vesicular stomatitis virus (VSV), and that Ts cells can be enriched by their ability to bind to antigen-coated dishes. Our data show that Ts cells specific for either the TNP hapten or for dextran will replicate VSV upon antigenic and/or mitogenic activation, whereas resting Ts and hapten-specific B cells are less efficient in this process. This system will now allow the direct quantitation of Ts cells and their activation properties.
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PMID:VSV replication in normal and transformed T cells, an assay for T suppressor cell activation. 302 59

A recombinant interferon (IFN) hybrid has been found to have a broad host-range of activity in an antiviral assay (plaque reduction of vesicular stomatitis virus) and also high efficacy as an antiviral agent in at least 12 different animal cell species. The IFN hybrid consists of amino acids 1 to 60 from HuIFN-alpha B and amino acids 61 to 166 from HuIFN-alpha D. The profile of cross-species activity of the IFN-alpha B/D hybrid has been compared with that of HuIFN-alpha F, and of the parents HuIFN-alpha B and -alpha D. When both IFN-alpha B and -alpha D were active in a cell species, the hybrid IFN had comparable or better activity than the more active parental IFN. The hybrid shared a broad cross-species activity with IFN-alpha D. However, the IFN-alpha B/D hybrid was 10-fold more active on human cells, 30-fold more active on rabbit cells, and 50-fold more active on mouse cells than IFN-alpha D.
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PMID:A recombinant human interferon-alpha B/D hybrid with a broad host-range. 302 15

Previously it was shown that macrophages (M phi) isolated from the vigorous (Vig) or modulated (Mod) liver granulomas (Gr) of Schistosoma mansoni-infected mice restored mitogen and parasite egg antigen-induced proliferative responses to accessory cell-depleted lymphocytes. Furthermore, supraoptimal concentrations of highly activated VigGrM phi suppressed lymphoproliferation to a greater extent than did the lesser activated ModGrM phi. In this study we investigated the role of soluble mediators in GrM phi accessory/regulatory activity. Indomethacin released VigGrM phi-mediated inhibition of mitogen but not antigen-induced lymphoproliferation. Extensively dialyzed serum-free GrM phi culture supernatant nonspecifically suppressed SEA- or KLH-induced blastogenesis. Culture supernatants also reduced vesicular stomatitis virus-induced plaque formation in supernatant-pretreated L-929 fibroblasts. The 20 to 45 Kd GrM phi-derived lymphoproliferation suppressive factor (SF) and the 20 to 50 Kd viral plaque-reducing factor (PRF) were stable at low pH, but became inactivated by heat and trypsin digestion. Although freshly isolated Vig or ModGrM phi contained preformed SF and PRF, in vitro production of the factors were depressed by protein synthesis inhibitors. Moreover, SF was active only when added to cultures before day 3 of the 6-day proliferation assay. Both SF and PRF were specifically retained on rabbit anti-murine IFN-alpha/beta immunoaffinity columns. Thus, the suppressive activity of Vig or ModGrM phi is in part mediated by a monokine that shares physical, biological, and antigenic characteristics with murine IFN-alpha/beta. In contrast to the suppression of antigen-driven proliferation, GrM phi culture supernatant costimulated PHA-induced mitogenesis. The 13 to 21 Kd GrM phi-derived lymphocyte-activating factor (LAF) was stable to heat, low pH, and trypsin digestion. Freshly isolated Vig or ModGrM phi contained preformed LAF, although its in vitro production was depressed by protein synthesis inhibitors. The physical and biological characteristics of GrM phi-derived LAF appear similar to IL 1. It is concluded that both Vig and ModGrM phi secrete regulatory/accessory monokines that may contribute to the initiation and maintenance of the focal inflammatory granulomatous response.
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PMID:Characterization of regulatory (interferon-alpha/beta) and accessory (LAF/IL 1) monokine activities from liver granuloma macrophages of Schistosoma mansoni-infected mice. 310 71

Denture and mucosal plaque samples were collected from eight full-denture wearers of whom four suffered from denture-induced stomatitis (DIS). Cultures were made, and a proportional identification to species level was carried out of bacteria and yeasts. An inventory was made of the predominant flora. Results showed that the predominant microflora of both groups, both on dentures and the denture-bearing mucosa, consisted mainly of Gram-positive bacteria. Differences in the proportions of cocci were found between the predominant bacterial flora on the dentures. In the control group, 69% of the denture flora consisted of cocci, while on the dentures of the DIS group a mean of 33% cocci was found. Neither group of palates revealed any differences in the proportions of cocci. On these locations a mean of 69% was found. The plaque of dentures and the palates of the healthy group showed means of 35% and 31%, respectively, of obligate anaerobic bacteria, while in the DIS group these percentages were 56% and 43%, respectively. No obligately aerobic bacteria were found. Candida species was detected in both groups, both on dentures and palates in very low numbers (DIS group, median palates 0.02%, median dentures 0.25%). The predominant organisms were Streptococcus species, of which S. salivarius was mostly present on the palates of both groups. Other species which were regularly found at different locations were Veillonella parvula and species of Lactobacillus, Bacteroides, and Actinomyces.
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PMID:Bacterial involvement in denture-induced stomatitis. 316 9

Denture stomatitis has been reported in 11-67% of complete denture wearers. It is more common on the palatal mucosa and in female patients. In Newton's type I denture stomatitis, where the inflammation remains focal, trauma seems to be responsible. In Newton's types II and III denture stomatitis, where the denture-bearing mucosa is diffusely involved, most workers assert that the aetiology is multi-factorial. Evidence is presented incriminating Candida albicans colonization of the fitting surface of the prosthesis in many cases of denture stomatitis promoted by continuous denture wearing. Allergic and primary irritant reactions to the denture base material, systemic predisposing factors including dietary deficiency and haematological disorders, also play a part. In most cases of denture stomatitis, elimination of denture faults, control of denture plaque and discontinuous denture wearing are sufficient treatment. The routine use of antiseptic or antimycotic drugs seems unnecessary.
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PMID:Denture stomatitis: a review. 329 86


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