Showing 4 results for Malassezia
Mahnaz Mahmoudi Rad, Akram Miramin Mohammadi, Parviz Tousi, Ali Khamesipour, Amirhoushang Ehsani, Seyyed Ebrahim Eskandari, Niki Mahmoudi Rad, Yasaman Mirdamadi, Zeinab Ghasemi, Mohsen Gerami Shoar, Shima Younespour,
Volume 2, Issue 2 (6-2011)
Abstract
Background and Aim: Malassezia is a lipophilic and dimorphic fungus which has different species. Some of them can be found as natural flora on skin and in some conditions may cause pityriasis versicolor. The aim of this study was to identify Malassezia species associated with pityriasis versicolor in Iranian patients, using PCR-RFLP.
Methods: In this study out of 65 patients with pityriasis versicolor to have pityriasis versicolor,isolates of 60 patients were positive. Malassezia species. using by PCR-RFLP. The Internal Transcribed Spacer 2 (ITS2) region was amplified by PCR employing the ITS3 and ITS4 primers and The restriction endonucleases AluI, BanI and MspAI were selected for producing distinct RFLP patterns.
Results: M. furfur (36.7%), M. globosa (30.0%), M. sympodialis (20.0%), M. slooffiae (8.3%), M. restricta (3.3%) and M. obtusa (1.7%) were the microorganisms responsible for the infection among participants. The M. sympodialis infection was strongly correlated with the female gender (P=0.02).
Conclusion: Our findings suggest that, the most common Malassezia species associated with pityriasis versicolor was M. furfur, followed by M. globosa.
Mahnaz Mahmoudi Rad, Akram Miramin Mohammadi, Parviz Tousi, Alireza Firooz, Seyyed Ebrahim Eskandari, Niki Mahmoudi Rad, Yasaman Mirdamadi, Amirhoushang Ehsani, Zeinab Ghasemi, Shima Younespour,
Volume 2, Issue 2 (6-2011)
Abstract
Background and Aim: Malassezia is a lipophilic and dimorphic fungus which has different species. Some of them can be found as natural flora on the skin and in some conditions may cause seborrheic dermatitis. The aim of this study was to identify Malassezia species associated with seborrheic dermatitis in Iranian patients, using PCR-RFLP.
Methods: In this study out of 79 patients with seborrheic dermatitis, isolates of 70 patients were positive for Malassezia species using PCR-RFLP. The Internal Transcribed Spacer 2 (ITS2) region was amplified by PCR employing the ITS3 and ITS4 primers and The restriction endonucleases AluI, BanI and MspAI were selected for producing distinct RFLP patterns.
Results: M. globosa (48.6%), M. furfur (40.0%), M. slooffiae (8.6%) and M. sympodialis (2.8%), were the microorganisms responsible for the infection among participants. M. pachydermatis, M. japonica, M. dermatis, M. restricta, M. obtuse, M. nana and M. yamatoensis were not isolated from any samples.
Conclusion: Our findings suggest that the most common Malassezia species associated with seborrheic dermatitis was M. globosa, followed by M. furfur.
Mahdi Taheri Sarvtin, Mahdi Abastabar,
Volume 6, Issue 1 (4-2015)
Abstract
Malassezia species (previously Pityrosporum) are normal flora of human and warm-blooded animals skin. The genus Malassezia is now divided into 13 species. Most of the yeasts show an absolute requirement for long fatty acid chains and specific procedures are required for their isolation, conservation and identification. Under appropriate conditions, the fungi can cause various skin diseases. The aims of this review were to describe recent classification of genus Malassezia their virulence factors, and their association to dermatlogical diseases.
Azin Ayatollahi,
Volume 14, Issue 3 (11-2023)
Abstract
Atopic dermatitis (AD) is a chronic, relapsing inflammatory skin disorder characterized by intensely itchy eczema. Sensitivity to Malassezia species may be associated with the severity of AD symptoms. The growth conditions for Malassezia spp. on children's skin are lower than on adult skin, making adults more susceptible to Malassezia. There is a minor suspicion that Malassezia spp. plays a role in AD as it may interact with skin immune reactions and barrier function, and sensitization against this skin-colonizing yeast can be correlated with illness activity. Additionally, antifungal treatment shows beneficial effects in some patients. However, the pathogenetic process and mutual interaction between Malassezia spp. and AD remain relatively unclear, necessitating further research.
