isolation of cryptococcus neoformans and other opportunistic fungi from pigeon droppings

Authors

maryam soltani department of medical and veterinary mycology, faculty of specialized veterinary science, science and research branch, islamic azad university, tehran, iran

mansour bayat department of medical and veterinary mycology, faculty of specialized veterinary science, science and research branch, islamic azad university, tehran, iran

seyed j. hashemi department of medical mycology, school of public health research, tehran university of medical sciences, tehran, iran

mohammadali zia department of basic sciences, khorasgan (isfahan) branch, islamic azad university, isfahan, iran

abstract

normal 0 false false false en-us x-none ar-sa background: invasive fungal infections cause considerable morbidity and mortality in immunocompromised hosts. pigeon droppings could especially be a potential carrier in the spread of pathogenic yeasts and mold fungi into the environment. the objective of this study was to isolation of cryptococcus neoformans and other opportunistic fungi from pigeon droppings. methods: one hundred twenty samples of pigeon droppings were suspended 1:10 in saline solution and then cultured. identification of c. neoformans was performed on bird seed agar, presence of a capsule on india ink preparation, urease production on urea agar medium and rapid yeast plus system. the identification of candida species was based on micro-morphological analysis on corn meal-tween 80 agar, rapid yeast plus system and growth in chromagar candida. the identification of other fungi was based on macromorphologic, microscopic, biochemical and physiological characteristics. results: the highest frequency of yeasts and mold fungi were observed in candida albicans 6.6% and penicillium spp. 25%. the frequency rate of c. neoformans isolation was 2.5%. conclusion: several types of fungi are present in pigeon droppings that can spread in environment and transmit to children and elderly as well as immunocompromised patients who are at increased risk of contracting opportunistic diseases.

Upgrade to premium to download articles

Already have an account?login

similar resources

Isolation of Cryptococcus neoformans and other opportunistic fungi from pigeon droppings

BACKGROUND Invasive fungal infections cause considerable morbidity and mortality in immunocompromised hosts. Pigeon droppings could especially be a potential carrier in the spread of pathogenic yeasts and mold fungi into the environment. The objective of this study was to isolation of Cryptococcus neoformans and other opportunistic fungi from pigeon droppings. MATERIALS AND METHODS One hundre...

full text

Isolation of Cryptococcus neoformans from pigeon droppings in Ahwaz, Iran

C. neoformans is a basidiomycetous, yeast-like fungus that, following inhalation from an environmental source, causes respiratory and neurological infection in humans and animals. This fungus has 5 serotypes (A, B, C, D, and AD), and recently was subdivided into 3 varieties known as C. neoformans var. grubii (serotype A), C. neoformans var. neoformans (serotype D), and C. neoformans var. gattii...

full text

DNA typing suggests pigeon droppings as a source of pathogenic Cryptococcus neoformans serotype D.

The unusual proportion of serotype D strains of Cryptococcus neoformans infecting patients diagnosed with cryptococcosis in some parts of France prompted the analysis of DNA fingerprints obtained with 26 clinical and 29 environmental isolates from the same area. Our results suggest that pigeon droppings are a potential source of pathogenic strains of C. neoformans serotype D, as previously demo...

full text

In vitro antifungal susceptibilities of Cryptococcus neoformans from pigeon droppings, cats, and human sources in Bangkok, Thailand

Introduction Cryptococcus neoformans has emerged as a clinically important opportunistic pathogen worldwide due to the AIDS pandemic. This pathogenic yeast causes pulmonary and systemic cryptococcosis in immucompromised human and susceptible animals such as cats and dogs (8, 10). C. neoformans is globally distributed and found to associate with soil, pigeon excreta, and decaying wood. Cryptococ...

full text

Isolation and molecular characterization of Cryptococcus species isolated from pigeon nests and Eucalyptus trees

Background and Purpose: Cryptococcus species are pathogenic and non-pathogenic basidiomycete yeasts that are found widely in the environment. Based on phenotypic methods, this genus has many species; however, its taxonomy is presently being re- evaluated by modern techniques. The Cryptococcus species complex includes two sibling taxa of Cryptococcus neoformans and Cryptococcus gattii. We aimed ...

full text

ISOLATION OF Cryptococcus neoformans FROM ENVIRONMENTAL SAMPLES COLLECTED IN SOUTHEASTERN NIGERIA.

Cryptococcosis caused by Cryptococcus neoformans is the second most common fungal opportunistic pathogen and a life-threatening infection with serious clinical manifestations especially in HIV/AIDS and other immunocompromised patients. In Nigeria, HIV/AIDS infection has reached an alarming level. Despite this, information on the presence of this fungus in clinical and environmental samples is v...

full text

My Resources

Save resource for easier access later

Save to my library Already added to my library

{@ msg_add @}

Journal title:

journal of research in medical sciences

جلد ۱۸، شماره ۱، صفحات ۵۶-۰

Keywords

[ ' c r y p t o c o c c u s n e o f o r m a n s ' , ' o p p o r t u n i s t i c f u n g i ' , ' c a n d i d a a l b i c a n s ' , ' i m m u n o c o m p r o m i s e d h o s t s ' , ' p i g e o n d r o p p i n g s r n / * s t y l e d e f i n i t i o n s * / r n t a b l e . m s o n o r m a l t a b l e r n t { m s o ' , ' s t y l e ' , ' n a m e ' , ' & ' , ' q u o t ' , ' t a b l e n o r m a l & ' , ' q u o t ' , ' m s o ' , ' t s t y l e ' , ' r o w b a n d ' , ' s i z e ' , 0 , ' m s o ' , ' t s t y l e ' , ' c o l b a n d ' , ' s i z e ' , 0 , ' m s o ' , ' s t y l e ' , ' n o s h o w ' , ' y e s ' , ' m s o ' , ' s t y l e ' , ' p r i o r i t y ' , 9 9 , ' m s o ' , ' s t y l e ' , ' q f o r m a t ' , ' y e s ' , ' m s o ' , ' s t y l e ' , ' p a r e n t ' , ' & ' , ' q u o t ' , ' & ' , ' q u o t ' , ' m s o ' , ' p a d d i n g ' , ' a l t ' , ' 0 i n 5 . 4 p t 0 i n 5 . 4 p t ' , ' m s o ' , ' p a r a ' , ' m a r g i n ' , ' t o p ' , ' 0 i n ' , ' m s o ' , ' p a r a ' , ' m a r g i n ' , ' r i g h t ' , ' 0 i n ' , ' m s o ' , ' p a r a ' , ' m a r g i n ' , ' b o t t o m ' , ' 1 0 . 0 p t ' , ' m s o ' , ' p a r a ' , ' m a r g i n ' , ' l e f t ' , ' 0 i n ' , ' l i n e ' , ' h e i g h t ' , ' 1 1 5 % ' , ' m s o ' , ' p a g i n a t i o n ' , ' w i d o w ' , ' o r p h a n ' , ' f o n t ' , ' s i z e ' , ' 1 1 . 0 p t ' , ' f o n t ' , ' f a m i l y ' , ' & ' , ' q u o t ' , ' c a l i b r i & ' , ' q u o t ' , ' & ' , ' q u o t ' , ' s a n s ' , ' s e r i f & ' , ' q u o t ' , ' m s o ' , ' a s c i i ' , ' f o n t ' , ' f a m i l y ' , ' c a l i b r i ' , ' m s o ' , ' a s c i i ' , ' t h e m e ' , ' f o n t ' , ' m i n o r ' , ' l a t i n ' , ' m s o ' , ' f a r e a s t ' , ' f o n t ' , ' f a m i l y ' , ' & ' , ' q u o t ' , ' t i m e s n e w r o m a n & ' , ' q u o t ' , ' m s o ' , ' f a r e a s t ' , ' t h e m e ' , ' f o n t ' , ' m i n o r ' , ' f a r e a s t ' , ' m s o ' , ' h a n s i ' , ' f o n t ' , ' f a m i l y ' , ' c a l i b r i ' , ' m s o ' , ' h a n s i ' , ' t h e m e ' , ' f o n t ' , ' m i n o r ' , ' l a t i n ' , ' m s o ' , ' b i d i ' , ' f o n t ' , ' f a m i l y ' , ' a r i a l ' , ' m s o ' , ' b i d i ' , ' t h e m e ' , ' f o n t ' , ' m i n o r ' , ' b i d i ' , ' } ' ]

Hosted on Doprax cloud platform doprax.com