david stevens archaeologist

Cortisone acetate gave results similar to dexamethasone, but cortisone acetate suppression of BAM responses lasted 7 days, > or = 4 days longer than dexamethasone suppression. Risk factors for and symptoms in infants with M. pachydermatis fungemia appeared to be similar to those described for Malassezia furfur sepsis. to add information, pictures and relationships, join in discussions and get credit for your contributions. This was made available for 6 months to allow public comment, and then the manuscript was prepared and approved.The revised definitions retain the original classifications of "proven," "probable," and "possible" invasive fungal disease, but the definition of "probable" has been expanded, whereas the scope of the category "possible" has been diminished. These data indicate that C5 is a critical factor in host resistance against S. cerevisiae infections and further confirm the pathogenic potential of some isolates of S. cerevisiae. My main teaching contributions are within the areas of: 3. Monocytes inhibited hyphal growth. Age. Does the lack of increase in CFU as infection worsens inadequately reflect fungal load in the tissue? Segal, B. H., Herbrecht, R., Stevens, D. A., Ostrosky-Zeichner, L., Sobel, J., Viscoli, C., Walsh, T. J., Maertens, J., Patterson, T. F., Perfect, J. R., Dupont, B., Wingard, J. R., Calandra, T., Kauffman, C. A., Graybill, J. R., Baden, L. R., Pappas, P. G., Bennett, J. E., Kontoyiannis, D. P., Cordonnier, C., Viviani, M. A., Bille, J., Almyroudis, N. G., Wheat, L. J., Graninger, W., Bow, E. J., Holland, S. M., Kullberg, B., Dismukes, W. E., de Pauw, B. E. A possible mechanism for synergy between antifungal therapy and immune defenses, Revised definitions of invasive fungal disease from the European Organization for Research and Treatment of Cancer/Invasive Fungal Infections Cooperative Group and the National Institute of Allergy and Infectious Diseases Mycoses Study Group (EORTC/MSG) Consensus Group. As a demonstration of the utility of the model to test antifungal activity, daily treatment with 10 or 50 mg/kg itraconazole significantly reduced dissemination to the liver and kidneys and reduced tongue CFU compared to controls. PhD student in Archaeology Dr Anna Stevens. Stevens, D. A., Diaz, M., Negroni, R., MONTEROGEI, F., Castro, L. G., Sampaio, S. A., Borelli, D., Restrepo, A., Franco, L., BRAN, J. L., Arathoon, E. G. Application of DNA typing methods and genetic analysis to epidemiology and taxonomy of Saccharomyces isolates. In contrast to prior reports, this study suggests that human serum acts synergistically with caspofungin to enhance its inhibitory activity in vitro against A. fumigatus. Intra-CSF amphotericin therapy is, however, far more toxic than oral azoles and requires much more clinical management to achieve success and avoid toxicity. At day 10 PI, birds treated with VCZ at 20 mg/kg had significantly fewer fungi in the lungs as demonstrated by methenamine silver stain (P = 0.017) or immunohistochemistry, as compared to diluent-treated (P = 0.034). Our objectives were to determine pharmacokinetic parameters and evaluate efficacy of voriconazole (VCZ) in a novel experimental quail model. The polymorphic loci exhibited from 20 to 42 alleles and 39 to 92 genotypes. When macrophages were pretreated with DEX, GM-CSF could reverse suppression even when added subsequently, provided DEX treatment was discontinued. Murine peritoneal macrophages, after adherence and establishment in culture in vitro in the presence of medium containing fetal bovine serum (FBS) for 20 h, then cultured for 20 h, produced several cytokines. PATHOGENICITY OF SACCHAROMYCES-CEREVISIAE IN COMPLEMENT FACTOR-5 DEFICIENT MICE. (SRIW) and SCOPE Europe. View details for Web of Science ID 000075665900020. Epidemiological studies show a striking predominance of paracoccidioidomycosis in adult men compared to premenopausal women. We treated a patient who had acquired aspergillosis some 80 days after allogeneic bone marrow transplantation, with oral itraconazole, 600 mg daily. The PS2 population, found predominantly in the hyper-endemic regions of northwestern Ontario, Wisconsin, and Minnesota, contained a substantial clonal component with random mating detected only among unique genotypes in the population.These analyses provide evidence for a genetically divergent clade within Blastomyces dermatitidis, which we use to describe a novel species, Blastomyces gilchristii sp. Toxicity was reversible, and principal side effects were nausea and vomiting (50%), gynecomastia (21%), decreased libido (13%), alopecia (8%), elevated liver function tests (5%), pruritus (5%), and rash (4%). Galactomannan antigen testing of blood is routine in some European centres, with EIA methodology supplanting agglutination because of apparently greater sensitivity. Again, the C5- mice were most susceptible to infection with S. cerevisiae, with 63% infected with YJM128 dying by day 7; no C5+ mice died. My husband [field archaeologist David Stevens] took on the role of primary carer when we were filming, and he came with me on all the shoots. Of 35 speciated isolates, 22 were H. stevensii, 10 H. johnsoniae, and 3 H. hamiltonii. Selected compounds are fungicidal towards a variety of pathogenic yeasts and molds, and a selected lead compound is efficacious in a mouse model of systemic candidosis. Here we describe a model of orogastrointestinal candidiasis. Ulceration, necrosis, cartilage invasion, and formation of a pseudomembrane are the pathologic features. View details for DOI 10.1016/j.vaccine.2009.03.030 Stevens, D. A., Kullberg, B. J., Brummer, E., Casadevall, A., Netea, M. G., Sugar, A. M. Cryptococcal meningitis in the immunocompromised host: intracranial hypertension and other complications. View details for DOI 10.1016/j.diagmicrobio.2010.06.010, View details for Web of Science ID 000283833100005. Both normal and immunosuppressed animals are used routinely. In a set of serial isolates, an increase in azole resistance correlated with the loss of heterozygosity at the MTL locus, lending further strength to the correlation. GM-CSF enhanced both mono and MDM with VCZ at 0.01 and 0.05 microg ml(-1) in killing Cn to 62% and 86%, and 61% and 84%, respectively. Because it is highly lethal in the immunocompromised host, even in the face of therapy, work-up must be prompt and aggressive, and therapy may need to be initiated upon suspicion of the diagnosis, without definitive proof (BIII). The combination of HK-Bd and mouse serum resulted in more IL-6 production than either component alone. View details for DOI 10.1196/annals.1406.029, View details for Web of Science ID 000250750700017. Zucker, K. E., Kamberi, P., Sobel, R. A., Cloud, G., Meli, D. N., Clemons, K. V., Stevens, D. A., Williams, P. L., Leib, S. L. Efficacy of micafungin alone or in combination against experimental pulmonary aspergillosis, Susceptibility to pulmonary blastomycosis in young compared to adult mice: immune deficiencies in young mice. View details for Web of Science ID 000167156500009. These data indicate that RCZ should be studied further. TLRs are important in the defense against fungal pathogens. The effect of 3M-003 on killing of Candida was evaluated on mouse (BALB/c) effector cell lineages: monocytes, neutrophils, and macrophages. C. metapsilosis appears rarely. Non-culture based assays including chitin determination, quantitative PCR and enzyme immunoassay (EIA) of cell wall constituents, galactomannan or beta-glucan overcome this difficulty in part. Dis. Current pharmacotherapy of allergic bronchopulmonary aspergillosis. By continuing you agree to the use of cookies, University of East Anglia data protection policy. Calderon, L., WILLIAMS, R., Martinez, M., Clemons, K. V., Stevens, D. A. Efficacy of micafungin alone or in combination against systemic murine aspergillosis. Progesterone is also an effective inhibitor of growth of the fungus. Limper, A. H., Knox, K. S., Sarosi, G. A., Ampel, N. M., Bennett, J. E., Catanzaro, A., Davies, S. F., Dismukes, W. E., Hage, C. A., Marr, K. A., Mody, C. H., Perfect, J. R., Stevens, D. A. Efficacy of Recombinant Human Mannose Binding Lectin Alone and in Combination with Itraconazole Against Murine Candida albicans vaginitis. Of the 12 homozygous isolates, one isolate was sensitive to azole drugs. Sixty isolates were grouped on the basis of the presence (group B) or absence (group A) of a 3-kb band. [2], At the time of his death, Stevens was a member of the Royal College of Physicians London, and the British Archaeological Association. View details for DOI 10.1007/978-1-61779-539-8_41. With both the MTT and XTT assays, neutrophils alone inhibited hyphae; when combined with VCZ, there was additive activity. Kamberi, P., Sobel, R. A., Clemons, K. V., Waldvogel, A., Striebel, J. M., Williams, P. L., Stevens, D. A. "I'm a guilty fish-eating vegetarian," she. In previous studies on the colony phenotype switching of Saccharomyces cerevisiae, we observed that the least virulent isolates formed greater numbers of petite colonies when grown at body temperature, 37 degrees C. To determine if there is a link between virulence and petite formation, we examined the frequency of spontaneous petite formation for virulent clinical isolates (YJM128, YJM309), an intermediate virulent segregant of YJM128 (YJM145) and avirulent clinical (YJM308) and nonclinical S. cerevisiae (Y55, YJM237) after growth at 37 degrees C. The rank order of increasing frequency of petite formation was YJM128 = YJM145 < YJM309 < Y 55 < YJM308 = YJM237, which is similar to the rank-order of virulence in CD-1 mice. 1 technical staff2 student. This indicated that non-IgG serum factors binding to B. dermatitidis prevented access to 1,3-beta-glucan by anti-1,3-beta-glucan antibody. He has written a book which deserves to be read., Dr Stuart Green Among the nine infant colonizing isolates, there were four different RFLP subtypes; four of the isolates were subtype VII-1. I welcome applications throughout the year from potential PhD candidates with an interest in oceanography or climate processes for available positions or from candidates who have their own funding or wish to apply for their own funding. At equivalent doses of 50 mg/kg of body weight, RCZ and ITZ were equally effective and RCZ was more effective than FCZ (P = 0.02). New nucleic acid-based research is promising. There is increased interest in intermittent regimen of liposomal amphotericin B, which may facilitate use in ambulatory settings. RFLP subtype VII-1 and C. parapsilosis sensu stricto appear to be nearly identical; C. orthopsilosis, which can be subtyped by MLST, can also be subtyped by RFLP. Macrophage inflammatory protein-1alpha (MIP-1alpha) production by BAM from BALB/c was significantly less than that from CD-1 in response to co-culture with Bd. Stevens, D. A., Schwartz, H. J., Lee, J. Y., Moskovitz, B. L., Jerome, D. C., Catanzaro, A., Bamberger, D. M., Weinmann, A. J., TUAZON, C. U., Judson, M. A., Platts-Mills, T. A., DeGraff, A. C., Grossman, J., Slavin, R. G., Reuman, P. Combined treatment: antifungal drugs with antibodies, cytokines or drugs. > present (Member of the Advisory Board of the Cheltenham Festival of Science) and [????] High dose IL-12 (1 microg, subcutaneously) treatment of BALB/c infected intranasally with Blastomyces resulted in enhanced survival (P<0.008). Infection with Trichosporon beigelii is an uncommon cause of endocarditis. The laboratory is, in addition, a clinical reference laboratory for fungal and actinomycete susceptibility testing, and body fluid antifungal drug concentration determinations, for hospitals. Population Pharmacokinetics of Conventional and Intermittent Dosing of Liposomal Amphotericin B in Adults: a First Critical Step for Rational Design of Innovative Regimens. In contrast, castrated animals exhibited lesser capacity to restrict disease progression. Ravuconazole has good efficacy and the potential to cure mucosal candidosis in the absence of a functional immune response. We delineate our experience in the medical and surgical management of this form of therapy, including procedural details that we have found useful, for the benefit of our colleagues who may wish to use them. The innovative approach to business planning described in this book is the result of not only many years research, but of the experience of running over 300 participatory sessions in a whole range of enterprises, in every State in Australia as well as other countries throughout the world. To further characterize these isolates, a comparison of restriction fragment length polymorphism (RFLP) patterns and genetic analysis were done. The species Candida orthopsilosis (eight isolates) and Candida metapsilosis (two isolates) consisted of five and one other RFLP types, respectively; none were VII-1. In particular, this includes questions about social justice, certain aspects of rational choice theory, and other areas of applied ethics (such as education, information technology, and environmentalism). At day 15, survivors were euthanatized. In seven of the eight reported cases, blood cultures were positive for the organism. 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