By Yousef Al-Doory (auth.), Yousef Al-Doory Ph.D., Arthur F. DiSalvo M.D. (eds.)
Blastomycosis continues to be the main enigmatic of human mycotic infections. The enigmas surround the usual habitat of the etiologic agent, volume of publicity and subclinical infections in endemic components, distribution of en demic foci in the course of the global, inconsistency of serologic assessment of contaminated sufferers, and ranging reaction of such sufferers to straightforward deal with ment regimens. even with diligent investigations via many useful investigators, we nonetheless don't know the ecological area of interest inhabited through the etiologic agent. we have now many tantalizing clues yet no certain solutions. Nor will we understand the level of the endemic components on the earth for this ailment. dermis trying out, so invaluable in defining the distribution of histoplasmosis and coccidioidomycosis, has been of no worth in mapping endemic components for blastomycosis. Even the serologic evaluate of identified situations of the illness has been too erratic in effects to be priceless as a diagnostic or prognostic technique. The enigmas of blastomycosis move immediately to the disorder itself. there's an in depth literature at the debate in regards to the presence and volume of subclinical infections. Case document sequence display that such brief infections do happen yet, in contrast to different mycoses, the level to which this phe nomenon is usual within the normal inhabitants nonetheless can't be assessed. Even the prognosis of demonstrated disorder is a massive medical problem.
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Additional resources for Blastomycosis
DIMORPHIC PHASE TRANSITION In studies extending observations made with H. capsulatum, Medoff et al. documented the physiological changes that occur during mycelial-toyeast-phase transition induced by shifting the incubation temperature from 25°C to 37°C, primarily focusing on mitochondrial respiration. The results were remarkably similar to those obtained with H. capsulatum and P. brasiliensis. These investigators divide the temperature-induced changes into three stages: (1) uncoupling of oxidative phosphorylation with decreases in intracellular ATP concentration, respiration rate, and electron transport components; (2) resting, dormant, with no measurable respiration; and (3) recovery phase with increase in respiration and concentrations of ATP and electron transport components, during which the yeast morphology appears.
JAm Vet Med Assoc 135:513-515,1959 15. Denton JF, DiSalvo AF: Isolation of Blastomyces dermatitidis from natural sites at Augusta, Georgia. Am J Trop Med Hyg 13:716-722, 1964 16. Harvey RP, Schmid ES, Carrington CC, et al: Mouse model of pulmonary blastomycosis: Utility, simplicity, and quantitative parameters. Am Rev Respir Dis 117:695-703, 1978 17. Denton IF, DiSalvo AF: Respiratory infection oflaboratory animals with conidia of Blastomyces dermatitidis. Mycopatho! Myco! Appl 36: 129-136, 1968 Virulence 41 18.
J BacterioI70:464-468, 1955 36. Levine S, Ordal ZJ: Factors influencing the morphology of Blastomyces dermatitidis. J BacterioI52:687-694, 1946 37. Sheiban ZB: Morphological conversion of Blastomyces dermatitidis in tapwater. Bull. WHO 51:423,1974 38. Kanetsuna F, Carbonell LM: Cell wall composition of the yeastlike and mycelial forms of Blastomyces dermatitidis. J Bacterioll 06:946-948, 1971 39. Roy I, Landau JW: Composition of the alkali resistant cell wall material of dimorphic Blastomyces dermatitidis.
Blastomycosis by Yousef Al-Doory (auth.), Yousef Al-Doory Ph.D., Arthur F. DiSalvo M.D. (eds.)