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378552

TYPING OF CRYPTOCOCCUS NEOFORMANS ISOLATES RECOVERED FROM DROPPINGS OF PIGEONS, PARROTS AND CANARIES

Article

Last updated: 03 Jan 2025

Subjects

-

Tags

Bacteriology and bacterial diseases

Abstract

Biotyping of 9 isolates of Cryptococcus neoformans recovered from bird droppings was carried out on Canavanine-glycine-bromothymol blue (CGB) and Glycine-cycloheximide-phenol red (GCP) media. Only one isolate was identified as C. neoformans var gattii (serotype B-C) because it produced cobalt-blue colour on CGB medium and red colour on GCP medium. Five isolates were considered as C. neoformans var neoformans (serotype A-D) as they produced no change in colour on both media, while 3 isolates were suspected to be C. neoformans var neoformans, as they produced light blue colour on CGB medium, but no colour on the GCP medium. Polymerase chain reaction (PCR) was used for identifying and biotyping of six C. neoformans isolates where two sets of base pairs C. neoformans biotypes specific were applied. The PCR results revealed that 5-isolates, which were identified and biotyped by conventional methods as C. neoformans var neoformans, in addition to the standard strain responded to the first primer of 695 bp, i.e they were identified as serotype A. Only one isolate, which was identified as C. neoformans vagattii was amplified by the second primer pair 448 bp that confirmed this isolate as serotype B.

DOI

10.21608/vmjg.2007.378552

Authors

First Name

M.

Last Name

. EL-HARIRI

MiddleName

-

Affiliation

Dept. of Microbiology, Faculty of Veterinary Medicine, Cairo Univ.

Email

-

City

-

Orcid

-

First Name

HEIDY

Last Name

ABO EL-YAZEED

MiddleName

-

Affiliation

Dept. of Microbiology, Faculty of Veterinary Medicine, Cairo Univ.

Email

-

City

-

Orcid

-

First Name

Dept. of Microbiology, Faculty of Veterinary Medicine, Cairo Univ.

Last Name

EZZ-ELDIN

MiddleName

-

Affiliation

Dept. of Microbiology, Faculty of Veterinary Medicine, Cairo Univ

Email

-

City

-

Orcid

-

First Name

W.

Last Name

TAWAKKOL

MiddleName

-

Affiliation

Dept. of Microbiology, Faculty of Pharmacy, Cairo Univ.

Email

-

City

-

Orcid

-

First Name

M.

Last Name

KOTB

MiddleName

-

Affiliation

Animal Reproduction Research Institute-Giza-Egypt.

Email

-

City

-

Orcid

-

First Name

M.

Last Name

REFAI

MiddleName

-

Affiliation

Dept. of Microbiology, Faculty of Veterinary Medicine, Cairo Univ.

Email

-

City

-

Orcid

-

Volume

55

Article Issue

2

Related Issue

50236

Issue Date

2007-04-01

Receive Date

2024-09-07

Publish Date

2007-04-01

Page Start

411

Page End

423

Print ISSN

1110-1423

Online ISSN

2537-1045

Link

https://vmjg.journals.ekb.eg/article_378552.html

Detail API

https://vmjg.journals.ekb.eg/service?article_code=378552

Order

378,552

Type

Original Article

Type Code

544

Publication Type

Journal

Publication Title

Veterinary Medical Journal (Giza)

Publication Link

https://vmjg.journals.ekb.eg/

MainTitle

TYPING OF CRYPTOCOCCUS NEOFORMANS ISOLATES RECOVERED FROM DROPPINGS OF PIGEONS, PARROTS AND CANARIES

Details

Type

Article

Created At

23 Dec 2024