| seborrhoeic dermatitis and pityrosporum orbiculare: treatment of seborrhoeic dermatitis of the scalp with miconazole-hydrocortisone (daktacort), miconazole and hydrocortisone. | seventy patients (36 males and 34 females) with seborrhoeic dermatitis of the scalp were treated in a double-blind controlled study, for a maximum of 6 weeks, with 2% miconazole base and 1% hydrocortisone (daktacort), 2% miconazole base, or 1% hydrocortisone. patients who were cured were treated with the same formulation prophylactically twice monthly for 3 months or until recurrence. nineteen of 21 patients were cured in the daktacort group, 15 of 22 in the miconazole group and 17 of 24 in the ... | 1986 | 2941051 |
| activity of triazole derivatives against pityrosporum orbiculare in vitro and in vivo. | the in vitro antimycotic activity and the in vivo antimycotic activity (in a rabbit model) of itraconazole against p. orbiculare were compared to the corresponding activities of ketoconazole. fluconazole's in vitro antimycotic activity and in vivo antimycotic activity against p. orbiculare were tested in the same models. the mic values of itraconazole against p. orbiculare were 0.1-0.2 micrograms/ml compared to 0.02-0.05 micrograms/ml for ketoconazole. for fluconazole, the mic values were 12.5-5 ... | 1988 | 2850751 |
| the in vitro antimicrobial effect of azelaic acid. | various strains of cutaneous micro-organisms were tested in vitro for their survival rates in 0.5 mol/l (8.4% w/v) azelaic acid solution. all bacterial strains exhibited large reductions in viability (at least 40-fold) over a 24 h test period, but little response was noted with pityrosporum ovale. the bactericidal effect of azelaic acid was reduced considerably in the presence of nutrients. minimum inhibitory concentrations (mics) and minimum bactericidal (or fungicidal) concentrations (mbcs) we ... | 1986 | 2947607 |
| the use of contact plates for quantitative culture of pityrosporum orbiculare. | | 1987 | 2958708 |
| the microbial colonization of inflamed acne vulgaris lesions. | seventy one papules in the early stages of inflammatory development were isolated from acne vulgaris affected skin and their content of micro-organisms characterized. the progress of lesions prior to excision was monitored by tracing an area of the upper back onto a transparent acetate sheet. this template was used the next day, and in some cases after 3 days, to identify inflamed lesions of less than 1 day and 2-3 days duration. these were biopsied, and pilosebaceous units isolated by micro-dis ... | 1988 | 2964856 |
| propylene glycol in the treatment of seborrheic dermatitis of the scalp: a double-blind study. | thirty-nine patients with seborrheic dermatitis of the scalp were treated in a double-blind controlled study with a solution containing either 15 percent propylene glycol, 50 percent ethanol, and 35 percent water, or a solution containing 50 percent ethanol and 50 percent water. two patients did not return for follow-up. sixteen of eighteen (89 percent) in the group treated with propylene glycol showed healing, compared to six of nineteen (32 percent) in the other group. in twenty patients quant ... | 1988 | 2974411 |
| a reevaluation of the genus malassezia by means of genome comparison. | results of a study of the genus malassezia on the basis of genome characters confirm that two species should be maintained, m. furfur and m. pachydermatis. the two forms associated with skin disease, frequently referred to as pityrosporum orbiculare and p. ovale, were found to be synonymous, the name m. furfur having priority. malassezia pachydermatis, hitherto regarded as a strictly zoophilic species, may also be found on humans. | 1989 | 2757367 |
| dermatophyte fungi in the guinea savannah region of nigeria and the changing phase of dermatophytosis in nigeria. | approximately 8,000 patients with various skin diseases were seen at the ahmadu bello university teaching hospital, kaduna, nigeria between january 1983 and december 1986. 174 (2.2%) presented with features in which a clinical diagnosis of superficial fungal infection was made or suspected. 69 out of 190 (36.3%) of specimens taken from skin lesions or nails from these patients were mycologically positive. the fungi isolated were trichophyton rubrum (24.6%), tr. soudanense (13.0%), candida albica ... | 1989 | 2677715 |
| [specific ige antibodies to pityrosporum orbiculare in patients with atopic dermatitis]. | by means of rast investigations, we detected specific ige antibodies against pityrosporon orbiculare in the plasma of patients with atopic dermatitis. the patients suffering from the so-called head and neck dermatitis showed an average specific ige antibody titer of rast class 3, whereas in those with predominant involvement of the extremities we found an average antibody titer of rast class 1. | 1989 | 2527450 |
| infantile seborrhoeic dermatitis and pityrosporum ovale. | twenty children (mean age 9 weeks) with infantile seborrhoeic dermatitis (isd) were investigated with cultures for bacteria, pityrosporum ovale and other fungi, and 20 healthy children served as controls. p. ovale and staphylococcus aureus were the dominant organisms. p. ovale was cultured in 18 of 20 infants with isd as compared to 4 of 20 controls. s. aureus was cultured in 14 of 20 infants with isd as compared to 1 of 20 controls. the role of s. aureus in isd is not known, but it could be a s ... | 1989 | 2523723 |
| pityriasis (tinea) versicolor in infancy. | pityriasis (tinea) versicolor is a common disorder of adults. we cared for five infants (four males and one female) with the disease. diagnosis was confirmed by potassium hydroxide preparation demonstrating the filaments of malassezia furfur and/or pityrosporum orbiculare, the yeast form. three patients had lesions in the neonatal period. the mother of one baby had pityriasis versicolor. two patients were siblings. one baby had associated atopic dermatitis and two had a positive family history o ... | 1988 | 3068655 |
| growth of malassezia furfur in parenteral fat emulsions. | | 1986 | 3081660 |
| systemic infection with malassezia furfur in an adult receiving long-term hyperalimentation therapy. | | 1987 | 3110310 |
| failure to eradicate malassezia furfur broviac catheter infection with antifungal therapy. | | 1987 | 3112725 |
| epidemiology, diagnosis, and management of malassezia furfur systemic infection. | malassezia furfur, a normal skin flora yeast, generally associated with very mild superficial skin infections, has become an opportunistic pathogen in patients with deep-line vascular catheters. the use of intravenous fat emulsions appears to have altered the microenvironment of the catheter and allowed colonization and subsequent infection. dissemination of the organism appears to be limited to the lungs, which may have been previously altered by vascular lipid deposition. because of the seriou ... | 1987 | 3115673 |
| intravenous catheter-associated malassezia furfur fungemia. | malassezia furfur, a lipophilic yeast that is the etiologic agent of tinea versicolor, has not been considered as a cause of serious illness in adults in the past. two adults are described in whom malassezia furfur fungemia developed while receiving total parenteral nutrition supplemented with lipids. the organism was identified in blood cultures from both patients only after isolation media were supplemented with a source of fatty acids. because m. furfur will grow only in media supplemented wi ... | 1987 | 3118701 |
| malassezia furfur--disseminated infection in premature infants. | three infants, born prematurely, died after clinical illnesses of 67, 65, and 60 days from infection by malassezia furfur. each infant had been nourished with lipid emulsions delivered through deep-line catheters. the infections, all discovered at autopsy, were characterized by massive involvement of lungs. two of the three had endocardial vegetations containing m. furfur; all three had lesions in liver, kidney, and spleen, and two had lesions in adrenal, pancreas, and colon. in addition, one of ... | 1989 | 2510495 |
| malassezia fungemia in neonates and adults: complication of hyperalimentation. | until recently, malassezia furfur was thought to be a pathogen only in tinea versicolor. more recently, this lipophilic yeast has been recovered from sick neonates with catheter-related infections. malassezia fungemia was studied in seven patients, and the salient features of this infection in patients described in the literature were reviewed. major risk factors include prolonged hospitalization, the presence of central venous catheters, and the use of intravenous fat emulsions. it is difficult ... | 1987 | 3125578 |
| malassezia furfur fungemia as a treatable cause of obscure fever in a leukemia patient receiving parenteral nutrition. | we describe a 46-year-old man with acute non-lymphocytic leukemia (anll) and crohn's disease who, while receiving total parenteral nutrition (tpn), developed a protracted febrile illness with thrombocytopenia, pulmonary infiltrates and jaundice. malassezia furfur, a lipophilic fungus, was identified from blood culture on lipid-enriched media. the patient improved rapidly with cessation of tpn and removal of his central venous catheter. m. furfur may cause a severe illness in immunosuppressed pat ... | 1987 | 3128972 |
| recovery of malassezia pachydermatis from eight infants in a neonatal intensive care nursery: clinical and laboratory features. | a 15-month retrospective survey of 507 admissions to a neonatal intensive care unit revealed 8 patients from whom malassezia pachydermatis was isolated from one or more clinical specimens. the fungus was cultured from blood (four patients), central venous catheter tips (three patients), urine (four patients), cerebrospinal fluid (one patient), eye discharge (one patient), ear discharge (one patient) and tracheal aspirate (one patient). seven of the eight infants displayed an episode of one or mo ... | 1988 | 3134645 |
| malassezia furfur fungaemia in infants receiving intravenous lipid emulsions. a rarity or just underestimated? | malassezia furfur fungaemia is reported in six preterm infants receiving a parenteral fat emulsion through a deep central venous catheter. the fungus was detected in blood cultures drawn through the catheter. the features of these cases are compared to those reported since 1981, when m. furfur was described for the first time as a cause of deep tissue infection. clinical signs such as fever, in spite of broad-spectrum antibiotics, and the presence of pulmonary infiltrates, associated with leucoc ... | 1989 | 2493378 |
| further in vitro studies with oxiconazole nitrate. | oxiconazole nitrate was compared in vitro with ketoconazole and econazole nitrate in tests with 96 dermatophytes, 18 isolates of malassezia furfur, and seven isolates of exophiala werneckii. an agar dilution procedure was used employing either kimmig's agar or sabouraud's dextrose agar supplemented with olive oil and tween 80. econazole was the more active compound in tests with microsporum species (41 isolates) and most isolates of trichophyton species (45 isolates). oxiconazole was the more ac ... | 1988 | 3180708 |
| malassezia furfur skin colonization in infancy. | malassezia furfur, a lipophilic yeast, has become recognized as a cause of sepsis in infants receiving parenteral fat emulsions via indwelling deep venous catheters. colonization of infants' skin may be a prerequisite to colonization of the intravascular catheter and subsequent infection with m furfur. three hundred ninety-three surveillance cultures were performed on 146 infants during their first 12 weeks of hospitalization in the intensive care unit (icu) or the neonatal transitional unit (nt ... | 1988 | 3283220 |
| phototoxicity of skin microorganisms tested with a new model. | a new standardized method for testing phototoxicity of chemicals against microorganisms is described. the inoculum size of the microorganism, application of test chemicals, prediffusion time, incubation time and incubation period are defined. staphylococcus aureus, s. epidermidis, candida albicans, and pityrosporum orbiculare were studied. both 8-methoxypsoralen and trimethylpsoralen were phototoxic against all microorganisms tested, while tetracycline and doxycycline were not phototoxic. c. alb ... | 1988 | 3288127 |
| a ten year survey of superficial mycoses in the tauranga district, bay of plenty. | between 1 january 1976 and 31 december 1985, 4086 patients living in tauranga and its environs were examined mycologically. all were suspected of superficial cutaneous mycoses and the majority were referred by general practitioners. a total of 1085 pathogenic fungi were identified, an isolation rate of 27%. the main pathogens identified in order of frequency were--candida species; microsporum canis; trichophyton rubrum; malassezia furfur; epidermophyton floccosum; t mentagrophytes var interdigit ... | 1988 | 3357624 |
| variations of pityrosporum orbiculare in middle-aged and elderly individuals. | pityrosporum orbiculare was cultured from clinically normal skin in 60 adults, 30 to 80 years of age. antibody titers against p. orbiculare in serum and lipid measurements were also estimated. there was a parallel between a reduction in number of cultured organisms and an increase in age (p = 0.002, multiple linear regression analysis). the lipid content of the skin in older people was lower than that in young and middle aged (p = 0.0002). this may be an explanation for the decrease in number of ... | 1988 | 2467495 |
| malassezia furfur in dermatological patients and clinically normal persons. | | 1988 | 3385349 |
| malassezia furfur fungemia in a patient without the usual risk factors. | | 1988 | 3408058 |
| pityrosporum orbiculare in children. | | 1987 | 3449761 |
| current treatment of cutaneous pityrosporum and candida-infections. | pityrosporum and candida-yeasts are opportunistic pathogens and infections require predisposing factors. these factors are also of major importance in treatment and the reason for recurrence and sometimes chronicity of the disease caused by these yeasts. pityrosporum orbiculare and p.ovale are both lipophilic, probably identical, and both are members of the normal human cutaneous flora. in pityriasis versicolor they change from the blastospore form to the mycelial form. my favourite treatment fo ... | 1986 | 3459338 |
| scanning electron microscopy of malassezia furfur attachment to broviac catheters. | malassezia furfur has been increasingly associated with broviac-catheter-related sepsis in infants receiving fat emulsions for parenteral alimentation. we examined by scanning electron microscopy the appearance of m. furfur attached to broviac catheter segments mock-infected in vitro and to broviac catheters removed from two infants with catheter-related sepsis. in vitro attachment occurred equally on external and internal surfaces of the catheters. although some organisms were attached next to ... | 1987 | 3596589 |
| a case of confluent and reticulate papillomatosis (gougerot-carteaud) with an unusual location. | a 15-year-old female with a brown hyperkeratotic plaque in the pubic region confirming with the diagnosis of confluent and reticulate papillomatosis (crp) is presented. the lesion disappeared rapidly after 3 weeks of treatment with 50% propylene glycol in water. the etiological role of pityrosporum orbiculare in crp is discussed. | 1988 | 2453997 |
| in vitro activity of systemic antifungal agents against malassezia furfur. | the activity of four antifungal agents against 15 systemic (blood and vascular catheter) and 10 superficial (skin) malassezia furfur isolates was evaluated. mic ranges were similar for the two groups of organisms: amphotericin b, 0.3 to 2.5 micrograms/ml; flucytosine, greater than 100 micrograms/ml; miconazole, 0.4 to 1.5 micrograms/ml; and ketoconazole, 0.025 to 0.4 micrograms/ml. | 1987 | 3619430 |
| semipermeable dressing and transepidermal water loss in premature infants. | within the first days of life, 10 infants, of 32 weeks' gestational age or less, began 2 weeks of treatment with a semipermeable wound dressing over a small area of skin. the effects of the dressing on transepidermal water loss and cutaneous microflora were evaluated. transepidermal water loss from the semipermeable dressing-treated skin was significantly less than that from the untreated skin immediately after placement of the dressing (8.1 +/- 1.8 g/m2.h-1 vs 17.7 +/- 3.5 g/m2.h-1, p less than ... | 1990 | 2388784 |
| the phototoxic inhibitory effect and phototoxic killing effect of micro-organisms. | the toxic and phototoxic growth inhibitory and killing effect of staphylococcus aureus, s. epidermidis, escherichia coli, pseudomonas aeruginosa, streptococcus pyogenus gr. a, st. viridans, pityrosporum ovale and candida albicans were studied. p. ovale and st. viridans were the only micro-organisms with any toxic effect against the other micro-organisms tested. p. ovale inhibited the growth of s. aureus, s. epidermidis, ps. aeruginosa and e. coli. st. viridans inhibited the growth of s. aureus, ... | 1990 | 2371170 |
| percutaneous central venous catheter colonization with malassezia furfur: incidence and clinical significance. | malassezia furfur colonization of central venous catheters has been implicated in the pathogenesis of systemic infections with this lipid-dependent yeast. to determine the incidence of catheter colonization in our neonatal intensive care unit (nicu), 25 consecutively removed percutaneous central venous catheters were examined by rinsing the lumen with saline and plating the rinse fluid on sabouraud dextrose agar overlaid with olive oil. m furfur grew from the lumina of eight catheters (32%). sur ... | 1987 | 3658573 |
| improved methods for isolation and enumeration of malassezia furfur from human skin. | a medium for the isolation and enumeration of malassezia furfur is described. incubation at 34 degrees c yielded geometric mean counts (in cfu per square centimeter) of 2.6 x 10(3) on the forehead, 8.5 x 10(2) on the cheek, and 9.6 x 10(3) on the back. these counts compared favorably with microscopic counts and greatly exceeded those obtained with previously described media. | 1987 | 3667925 |
| antifungal activity of the allylamine derivative terbinafine in vitro. | terbinafine, an allylamine derivative, represents the most effective of this new chemical class of antimycotic compounds. under in vitro conditions, terbinafine proved to be highly active against dermatophytes (mic range, 0.001 to 0.01 microgram/ml), aspergilli (mic range, 0.05 to 1.56 micrograms/ml), and sporothrix schenckii (mic range, 0.1 to 0.4 microgram/ml) and also exerted good activity against yeasts (mic range, 0.1 to greater than 100 micrograms/ml). the growth of malassezia furfur was i ... | 1987 | 3674847 |
| confluent and reticulated papillomatosis responsive to selenium sulfide. | confluent and reticulated papillomatosis of gougerot and carteaud (crp) is a distinctive clinicopathologic entity, of unknown etiology, which shows some resemblance to pityriasis versicolor. a case of crp that showed a significant therapeutic response to topical selenium sulfide is reported. in previously described cases, response to this agent and to other medications, both antifungal and keratolytic, has been variable. a review of these cases reveals conflicting evidence regarding the question ... | 1986 | 3699967 |
| changes in fungal ultrastructure after short-course ciclopiroxolamine therapy in pityriasis versicolor. | the clinical outcome and the effects on morphogenesis and cell ultrastructure induced by a 1% ciclopiroxolamine solution in six patients with proven pityriasis versicolor were studied. treatment regimens consisting of a once-daily application for 1 day, 2 days (days 1 and 4) or 3 days (days 1, 4 and 8). clinical evaluation, scanning (sem) and transmission electron microscopy (tem) were performed on skin scrapings before treatment, and at 3, 7, 15 and 21 days after the start of therapy. sem techn ... | 1990 | 2347114 |
| methods for optimal recovery of malassezia furfur from blood culture. | malassezia furfur, a recently described agent of catheter-associated sepsis, requires long-chained fatty acids for in vitro growth. to determine optimum conditions for recovery of the organism from blood culture, we compared a radiometric (bactec) with a lysis centrifugation-direct agar plating (isolator) blood culture method. when blood culture isolates of m. furfur were suspended in phosphate-buffered saline and used as inocula, the bactec system detected the organisms radiometrically only whe ... | 1986 | 3771759 |
| potential therapeutic effect of yeast killer toxin. | experimental infections were produced in guinea pigs, rabbits and dogs with lesions similar to those seen in human seborrheic dermatitis and otitis externa by cutaneous application of cultures of malassezia furfur and m. pachydermatis. infected animals were treated by topical application of a concentrated yeast killer toxin (hansenula anomala ucsc 25f). clinical recovery as well as negative mycological test cultures of infected animals proved to the clearly associated with the treatment by the k ... | 1986 | 3796712 |
| in vitro sensitivity of malassezia spp. to various antimycotics. | the sensitivity of malassezia furfur and malassezia pachydermatis to various antimicrobial agents both as single compounds and combined with various vehicles was evaluated in vitro using the agar diffusion method. clotrimazole, thiabendazole, ketoconazole, econazole, miconazole and other agents were chosen taking into account their specific commercial formulations and their utilization in mycotic pathologies sustained by malassezia genus in man and animals. the antimicrobial agents were compared ... | 1985 | 3836136 |
| ige antibodies to pityrosporum orbiculare in children with atopic diseases. | ige antibodies to pityrosporum orbiculare and 16 other species of fungi were measured with the radioallergosorbent test (rast) in sera of 131 children. the children were 7-18 years old, suffered from atopic diseases and showed a varied allergic profile on a skin prick test (spt). ige antibodies to p. orbiculare were found in the sera of 26 of the 131 children. a higher proportion of the p. orbiculare rast positive children than of the negative ones had current eczema (p less than 0.0001). in a s ... | 1990 | 2333749 |
| [folliculitis caused by pityrosporum]. | during the summer months three young patients were examined by us for an asymptomatic cutaneous eruption of erythematous papules located on neck, shoulders and back. they were heat-resistant to several antiseptics and systemic antibiotic treatment. the mechanical expression of these lesions did not reveal the appearance of pus, but a hard keratinous matter. the histopathological findings of the lesions show a non specific folliculitis, but the pas stain shows numerous spores of yeast forms withi ... | 1985 | 3912639 |
| [the history of dandruff and dandruff in history. a homage to raymond sabouraud]. | in one of his books, written at the beginning of this century, raymond sabouraud devotes some 280 pages to the history of dandruff. their reading illustrates how, from the greeks to sabouraud's era, this desquamative disease has been subjected to endless doctrinal and scientific conflicts, long before the so-called "present" controversies. one of the early conflicts, between celsus and galen, lies in the nature of the squames, i. e. dry or exudating, leading to the inclusion (or non inclusion) o ... | 1990 | 2181905 |
| an immunologic and cultural study of pityrosporum folliculitis. | in patients with pityrosporum folliculitis the mean serum antibody titer against pityrosporum orbiculare was significantly higher than in healthy control subjects (p less than 0.01). the mean number of p. orbiculare organisms per square centimeter cultured from normal-looking skin in patients was not significantly higher than the number cultured from normal-looking skin in control subjects. results of prick tests against p. orbiculare extract were negative or weak, indicating that patients with ... | 1986 | 3958257 |
| common cutaneous disorders in athletes. | athletic activity may cause or aggravate skin disorders, which in turn may diminish athletic performance. since many sporting activities necessitate prolonged exposure to the sun, athletes must avoid painful sunburn which will adversely affect their performance. drugs and chemicals also may cause photoallergic and/or phototoxic reactions, including polymorphous light eruption and athletes should thus avoid photosensitising drugs and chemicals. the effects of chronic ultraviolet exposure include ... | 1990 | 2180022 |
| [pityriasis versicolor due to malassezia ovalis]. | in a randomly collected series of 175 cases of pityriasis versicolor in residents of the central-northern part of venezuela, 13% of the patients were infected with ovoid unicellular units of the causal fungus (malassezia ovalis) and 87% with globous unicellular units in the scales (m. furfur). only globous unicellular units (pityrosporum orbiculare) were seen outside the active lesions and in these, after the successful treatment with ketoconazole. the median age of 40 'ovalis' patients was 37.5 ... | 1985 | 3990767 |
| systemic malassezia furfur infections in patients receiving intralipid therapy. | systemic infection with malassezia furfur was first reported in 1981 as a specific complication of intralipid therapy in a neonate. six additional patients, including three older than 16 years of age, were identified subsequently. all had received prolonged intralipid infusion through central venous catheters. pulmonary infection was documented in tissue in three cases, the clinical presentation was characterized by pulmonary infiltrates, fever, and, in the infants, thrombocytopenia. two subgrou ... | 1985 | 4018778 |
| an electron microscope study of the yeast pityrosporum ovale. | | 1970 | 4192087 |
| pityrosporum orbiculare. its possible role in seborrheic blepharitis. | | 1967 | 4225663 |
| alkylaminoalkyl-dithiocarbamic acids, new drugs against pityrosporum ovale. | | 1968 | 4237099 |
| comedogenic potential of the lipid extract of pityrosporum ovale. | | 1970 | 4250567 |
| [serologic differentiation between pityrosporum canis and pityrosporum ovale]. | | 1972 | 4508516 |
| the ultrastructure of tinea versicolor and malassezia furfur. | | 1972 | 4554182 |
| scanning electron microscopy of tinea versicolor organisms. (malassezia furfur--pityrosporon orbiculare?). | | 1973 | 4692129 |
| [culturability of pityrosporum orbiculare on various culture media and resistance testing using various antimycotics]. | | 1973 | 4752505 |
| [malassezia furfur in a case of generalized pityriasis versicolor]. | | 1974 | 4847381 |
| cultivation and pathogenicity of malassezia furfur with special respect to mycological studies on etiological fungus of tinea (pityriasis) versicolor. | | 1969 | 5382447 |
| confluent and reticulate papillomatosis (gougerot-carteaud) and pityrosporum orbiculare. | | 1969 | 5391101 |
| a study of the fatty acid metabolism of the yeast pityrosporum ovale. | the yeast pityrosporum ovale, a skin saprophyte, will only grow if fatty acids of chain length greater than c(10) are added to the culture medium. 9-hydroxypalmitic acid is the major product of metabolism of even-carbon-number fatty acids; 9-hydroxystearic acid is also found. the optimum ph for this conversion is ph4.5. the hydroxy fatty acids produced are found bound in a polar form in the aqueous phase of the culture medium. growth of the organisms is facilitated by presentation of the substra ... | 1968 | 5691082 |
| [laboratory infection caused by malassezia furfur]. | | 1968 | 5761208 |
| pityrosporum orbiculare: incidence and distribution on clinically normal skin. | | 1969 | 5813527 |
| etiological significance of pityrosporum orbiculare in tinea versicolor. | | 1963 | 5896183 |
| electron microscopy of malassezia furfur in tinea versicolor. | | 1966 | 5977762 |
| in vitro and in vivo activities of ketoconazole and itraconazole against pityrosporum orbiculare. | the mics of ketoconazole and itraconazole against pityrosporum orbiculare were 0.02 to 0.05 and 0.1 to 0.2 micrograms ml-1, respectively. in a rabbit model, orally administered ketoconazole (1 mg kg-1) afforded protection against experimental pityriasis (tinea) versicolor in all animals. itraconazole (5 mg kg-1) was effective in four of five rabbits. | 1984 | 6097177 |
| one case of confluent and reticulate papillomatosis (gougerot-carteaud). | a 16-year-old girl with dark-brown coalescing papules symmetrically localized to the cheeks, is reported. the diagnosis may be consistent with the criteria for confluent and reticulate papillomatosis (gougerot-carteaud). the association between this disease and pityrosporum orbiculare is discussed. | 1980 | 6158235 |
| tinea versicolor and body lotions. | a woman complained she had caught her "white spots" from an american sun lotion. the daughter also had them. the mother's spots showed malassezia furfur. the daughter, by a curious coincidence, had developed vitiligo at the same time. as a comfort it was agreed that the sun lotion should be examined for fungal contamination. scrapings from lesions of patients with tinea versicolor show a typical appearance of malassezia furfur. roberts (9) cultured specimens from 27 patients and isolated pityspo ... | 1980 | 6162319 |
| age incidence of pityrosporum orbiculare on human skin. | we have investigated the incidence of the lipophilic fungi pityrosporum orbiculare and p. ovale on clinically normal skin in newborn children and in children at the age of 6 months, 1 year, 5 years, 10 years, and 15 years. p. orbiculare was absent in children of less than 5 years of age. it was present in the highest incidence (93%) in the 15-year-old children, about the same frequency as in adults. the colonization starts during the period when the sebaceous glands become active. p. ovale could ... | 1980 | 6162342 |
| skin surface electron microscopy in pityrosporum folliculitis. the role of follicular occlusion in disease and the response to oral ketoconazole. | the yeast pityrosporum orbiculare is thought to cause the folliculitis associated with seborrheic eczema. however, a combination of mechanical and microbiological factors may be involved, with follicular occlusion leading to yeast overgrowth and folliculitis. scanning electron microscopy was used to investigate this hypothesis. skin biopsy specimens obtained from patients with pityrosporum folliculitis were examined by scanning electron microscopy before and after oral ketoconazole therapy. pati ... | 1990 | 2143368 |
| quantitative variations in distribution of pityrosporum orbiculare on clinically normal skin. | the lipophilic yeast pityrosporum orbiculare has been cultured quantitatively, in 10 volunteers, from clinically normal skin on the chest, back, upper arm, lower leg, and dorsal aspect of the hand. the highest count was on the back (mean 333/cm2) and chest (mean 327/cm2). this was statistically significant higher than on the upper arm (mean 21/cm2), lower leg (mean 13/cm2), and dorsal aspect of the hand (mean 2/cm2). the variations in number of p. orbiculare parallels both regional variations in ... | 1983 | 6195869 |
| growth and filament production of pityrosporum orbiculare and p. ovale on human stratum corneum in vitro. | when pityrosporum orbiculare and p. ovale were incubated with stratum corneum epithelial cells, suspended in phosphate-buffered saline for 90 min at 37 degrees c, short filaments were produced in 11-17.5% of the yeast cells. a successful culture of p. orbiculare and p. ovale on human stratum corneum in vitro is described. when the stratum corneum pieces were incubated for 5 days in an environment with 7% co2, a picture resembling that seen microscopically in tinea versicolor was observed. filame ... | 1983 | 6197836 |
| the in vitro antifungal activity of ketoconazole, zinc pyrithione, and selenium sulfide against pityrosporum and their efficacy as a shampoo in the treatment of experimental pityrosporosis in guinea pigs. | the fungistatic and fungicidal activity of ketoconazole, zinc pyrithione, and selenium sulfide against pityrosporum, a yeast thought to play a pathogenic role in seborrheic dermatitis and dandruff, was assessed in dixon broth for pityrosporum ovale and sabouraud broth for pityrosporum pachydermatis. ketoconazole inhibited growth at concentrations ranging from 0.001 to 1 micrograms/ml. for zinc pyrithione and selenium sulfide higher concentrations were needed. in a guinea pig model the efficacy o ... | 1990 | 2142498 |
| onychomycosis and aids. clinical and laboratory findings in 62 patients. | the results of a study on onychomycosis in aids related complex and aids patients presenting for dermatology consultation at an infectious diseases department are reported. the clinical results showed that most patients presented a proximal white superficial onychomycosis. the association with a clinical interdigital involvement was rare, but the association with a mycotic plantar keratoderma was more frequent. the laboratory results showed that dermatophytes were the most frequent etiologic age ... | 1990 | 2141830 |
| the permissive effect of sebum in seborrhoeic dermatitis: an explanation of the rash in neurological disorders. | the hypothesis that sebum permits the growth of pityrosporum ovale, and hence the development of seborrhoeic dermatitis, was tested by observing whether a reduction of sebum production by isotretinoin would improve the disorder. in 10 male patients with seborrhoeic dermatitis, treatment with isotretinoin for 6 weeks reduced the mean sebum excretion rate by 70% and improved the severity of the rash, but with a site difference in magnitude of response. it is concluded that the residual pool of seb ... | 1990 | 2137011 |
| malassezia furfur catheter infection cured with antibiotic lock therapy. | | 1991 | 1986581 |
| activation of complement by pityrosporum orbiculare. | the ability to activate complement in human serum was evaluated for the two yeast-like organisms pityrosporum orbiculare, the presumed etiologic agent of tinea versicolor, and candida albicans. complement activation was measured by: (a) using inhibition of rabbit red blood cell lysis by human serum after incubation with the organisms, and (b) quantitation of the amount of c3 deposited on the surface of the yeast by an enzyme-linked immunoabsorbent assay. it was found that both organisms had appr ... | 1983 | 6337222 |
| comparative clinical trial of bifonazole solution versus selenium sulphide shampoo in the treatment of pityriasis versicolor. | 38 patients were entered into a controlled randomised trial, comparing two forms of topical treatment for pityriasis versicolor. diagnosis was made on clinical criteria and confirmed by direct microscopic examination of parker quink/koh preparations. 20 patients were treated with bifonazole solution daily for 2 weeks. 18 patients were treated with 2.5% selenium sulphide shampoo daily for one week and weekly for six weeks. mycological examination showed that malassezia furfur was present in all p ... | 1984 | 6396117 |
| an evaluation of the antifungal effect of bifonazole on torulopsis glabrata and candida albicans under various in vitro test conditions. | 1-[(4-biphenylyl)-phenylmethyl]-1h-imidazole (bifonazole, bay h 4502, mycospor) showed in vitro significant inhibitory activity against torulopsis glabrata, candida albicans, pityrosporum ovale, corynebacterium acnes and staphylococcus epidermidis. the antifungal activity of bifonazole against t. glabrata and c. albicans varied with the in vitro test conditions. there was a tendency for minimal inhibitory concentrations to increase as fungal inoculum size was increased and as incubation time was ... | 1983 | 6409128 |
| skin occlusion: effect on pityrosporum orbiculare, skin pco2, ph, transepidermal water loss, and water content. | the effect of 8 days skin occlusion on pityrosporum orbiculare, bacteria, skin pco2, ph, transepidermal water loss (tewl), and water content (wc) was studied. p. orbiculare counts increased from a baseline of 2.1 x 10(2)/cm2 to 2.3 x 10(3)/cm2 after 3 days occlusion; bacterial counts increased from 2.9 x 10(3)/cm2 to 1.8 x 10(5)/cm2 after 8 days occlusion. ph increased during occlusion from 5.6 to a maximum at day 3 of 6.7; tewl increased to a maximum of 11.74 g m-2 h- after 3 days occlusion com ... | 1983 | 6419682 |
| scanning electron microscopy of yeasts in seborrheic keratoses. | lesions of seborrheic keratoses were studied by scanning electrom microscopy. numerous yeasts were present on the karatinized cells and hairs associated with the lesions. surfaces of some yeasts were smooth and others were ruffled. the ruffles suggested the presence of a glycocalyx. the yeasts exhibited the morphological features of pityrosporum ovale. | 1980 | 6444640 |
| [in vitro blastogenic response of lymphocytes in pityriasis capitis and dermatitis seborrheica (using pha-mitogen, pityrosporum ovale and bacteria)]. | 63 patients with pityriasis capitis (pc) "dandruff" and seborrheic dermatitis (sd) as well as normal controls were studied. antigenicity was checked "in vitro" by the lymphocytic transformation test. a significant transformation in the pc to p. ovale was observed while in sd it was to stanphyloccocus and p. ovale. in view of results the authors suggest that there is a similar immunoalergic response in the host to those antigens. the clinic will differ according to the antigens. this is significa ... | 1981 | 6455574 |
| broviac catheter-related malassezia furfur sepsis in five infants receiving intravenous fat emulsions. | malassezia furfur, a lipophilic fungus commonly found on the skin of healthy adult, was isolated from broviac catheter blood cultures in five sick infants who were receiving fat emulsions intravenously. the most common manifestations of sepsis included apnea and bradycardia, low-grade fever, interstitial pneumonia, elevated neutrophil band counts, and thrombocytopenia. all infants recovered without antifungal therapy after removal of the broviac catheters. early onset of fungemia after catheter ... | 1984 | 6542135 |
| adherence of pityrosporum orbiculare to human stratum corneum cells. | this investigation demonstrates the capacity of pityrosporum orbiculare to adhere to human stratum corneum cells in vitro; this may be an important initial step in its colonization of stratum corneum. adherence was significantly higher when incubation for 120 min (mean 9.4 adherent yeasts) was compared to 60 min (mean 3.5 adherent yeasts, p less than 0.001), but not to 90 min (mean 8.6 adherent yeasts, p greater than 0.05). adherence was higher at an incubation temperature of 37 degrees c (mean ... | 1983 | 6625651 |
| semantics--tinea versus pityriasis versicolor and pityrosporum orbiculare versus malassezia furfur. which is proper? | | 1984 | 6698685 |
| pityrosporum infection in an infant with lesions resembling erythema annulare centrifugum. | erythematous, scaling patches over the face, torso, and extremities developed in a 2-month-old female infant. the facial lesions enlarged and became confluent, while the torso and leg lesions enlarged and assumed an annular configuration. spores of pityrosporum ovale and pityrosporum orbiculare were found in large numbers in potassium hydroxide preparations from these lesions, a finding confirmed by culture. clotrimazole ointment was applied, and the lesions resolved within one week, leaving dep ... | 1984 | 6703739 |
| serologic analysis of the extractable carbohydrate antigens of pityrosporum ovale. | antigens soluble in hot trichloracetic acid from eighteen strains of pityrosporum ovale were studied using rabbit antiserum to american type culture collection strains 24027, 12078, and 14521. these strains were found to share two antigens, both of which were present in cells of pityrosporum orbiculare and one of which was present in cells of pityrosporum pachydermatis, pityrosporum canus, candida albicans and rhodotorula rubrum. | 1980 | 6779094 |
| the effect of benzoyl peroxide on cutaneous micro-organisms in vitro. | the survival curves of cutaneous micro-organisms in the presence of benzoyl peroxide were investigated. all the curves exhibited a shoulder prior to exponential cell death. benzoyl peroxide was lethal to the cutaneous organisms tested and they varied in sensitivity increasing as follows: propionibacterium acnes, staphylococcus capitis, staph. epidermidis, staph. hominis, prop. avidum, prop. granulosum and pityrosporum ovale. | 1983 | 6874624 |
| activation of the alternative pathway of complement by malassezia ovalis (pityrosporum ovale). | activation of c3 and factor b in normal human serum by p. ovale was demonstrated using a standard unidirectional immunoelectrophoresis technique. activation of complement by the alternative (properdin) pathway is a possible mechanism by which p. ovale may mediate an inflammatory response. | 1980 | 6900183 |
| the effect of ketoconazole and itraconazole on the filamentous form of pityrosporum ovale. | the effect of ketoconazole and itraconazole on the filamentous form of pityrosporum ovale in vitro was studied. in a recently developed model, using human stratum corneum in vitro, p. ovale transformed into the filamentous form in 25-30% of the cells. ketoconazole and itraconazole in concentrations of 0.01, 0.1 and 1 microgram/ml were incubated together with p. ovale cells on human stratum corneum pieces placed on a lipid-enriched culture medium. both agents effectively blocked the production of ... | 1990 | 1969209 |
| histological and serological studies of pityrosporum orbiculare in cases of pityriasis versicolor. | | 1981 | 7014679 |
| effects of reduced temperature on the components of human lymphocyte transformation responses to antigens. | the present studies were designed to determine the site at which reduced temperature, such as that found at the skin surface, affects the lymphocyte transformation response to an antigenic stimulus. extracts of candida albicans and pityrosporum orbiculare were used as antigens since most normal subjects demonstrate positive lymphocyte responses to both. total lymphocyte transformation responses to both antigens were reduced and delayed at 34.5 as compared with 37 degrees c. the former temperatur ... | 1982 | 7049948 |
| [in vitro antifungal activity of amorolfine against malassezia species]. | in vitro antifungal activities of a new morpholine agent, amorolfine (mt-861) were investigated, against 39 strains of malassezia furfur (11 stock cultures and 28 clinical isolates) and 8 strains (stock cultures) of malassezia pachydermatis, in comparison with those of 2 reference drugs, clotrimazole (ctz) and bifonazole (bfz). of the 3 antifungal agents, mt-861 exhibited strongest antifungal activities against the stock cultures of m. furfur and m. pachydermatis with average mic values of 0.428 ... | 1991 | 1960851 |
| the frequency of pityrosporum orbiculare as a skin commensal among an israeli population. | | 1982 | 7177161 |
| prevalence of dermatophytes and yeasts (candida spp., malassezia furfur) in hiv patients. a study of former drug addicts. | the prevalence of dermatophytes and yeasts (candida spp. and pityrosporum spp.) was studied in 40 former drug-addicts, all of whom were hiv seropositive but otherwise had no other symptoms (2nd stage cdc atlanta, 1987). we considered 7 skin areas for dermatophytes and pityrosporum spp. (scalp, forehead, nose, back, chest, groin, toe webs) and the mouth for yeasts. dermatophytes were found in 8 (20%) and tinea pedis was the most common dermatophytosis: tricophyton rubrum was the fungus most frequ ... | 1991 | 1875983 |
| micro-aerophilic and anaerobic growth of pityrosporum species. | pityrosporum orbiculare, p. ovale, and p. pachydermatis showed the same luxuriant growth when cultured under aerobic conditions, in an aerobic milieu with 7% co2, and under micro-aerophilic conditions. the species survived and even multiplied under strictly anaerobic conditions. these findings may explain how p. orbiculare and p. ovale can survive in the deeper parts of hair follicles. on a medium that enhanced the production of filaments in pityrosporum, filaments were more pronounced in the mi ... | 1981 | 7256488 |
| seborrhoeic dermatitis and pityrosporum ovale: cultural, immunological and clinical studies. | seborrhoeic dermatitis is a common skin disease mainly affecting the scalp and face. the etiology of seborrhoeic dermatitis is unknown but a connection with the lipophilic yeast pityrosporum ovale has been found in a number of treatment studies. p. ovale belongs to the normal cutaneous flora but is also an opportunistic pathogen. the purpose of these studies was to examine how the density of p. ovale changes with age, to determine the number of p. ovale in seborrhoeic dermatitis compared to cont ... | 1991 | 1839943 |
| amino acid metabolism of malassezia furfur. | the mechanism responsible for the hypopigmentation which follows pityriasis versicolor (p.v.) infection has not yet been satisfactorily explained. this work was done in order to study the effect of malassezia furfur on the decomposition or the utilization of the amino acid tyrosine in vitro. no effect could be noted, which points to the assumption that the effect of the causative fungus of p.v. on melanogenesis is most probably due to the blocking of melanine synthesis by one of the product of m ... | 1981 | 7316405 |
| the prevalence of yeasts in clinical specimens from cancer patients. | yeasts recovered from cancer patients during a 15-month period were speciated, and the prevalence of these isolates in various types of clinical specimens was determined. five species, including candida albicans, candida tropicalis, candida parapsilosis, candida krusei, and torulopsis glabrata, accounted for 97.1% of the isolates. eighteen different species were recovered. respiratory and urine specimens yielded 75% of the organisms. c. albicans, c. tropicalis, and c. parapsilosis were recovered ... | 1980 | 7369176 |