Pigmentation and autofluorescence of Candida species after growth on tryptophan media

1974 ◽  
Vol 20 (4) ◽  
pp. 595-603 ◽  
Author(s):  
Stuart Chaskes ◽  
Arthur W. Phillips
Keyword(s):  
Candida Albicans ◽  
Nitrogen Source ◽  
Candida Species ◽  
Pigment Production ◽  
Brown Pigment ◽  
Pink Pigment

Candida albicans and six other medically important Candida species were cultured on glucose–salts–biotin media containing tryptophan as the major nitrogen source. Candida albicans, C. tropicalis, and C. parapsilosis produced a pink pigment; C. krusei, C. pseudotropicalis, and C. gulliermondii formed brown pigments. Pigmentation of C. stellatoidea was variable, some strains produced brown pigments and others a pink pigment. Production of pink pigment was catalyzed by light. Cultures incubated in the dark produced only trace amounts of the pink pigment. Iron enhanced pigment production. Intense autofluorescence was observed for strains producing the brown pigment and weak autofluorescence for strains producing the pink pigment.

Characteristics of candidaemia with Candida-albicans compared with non-albicans Candida species and predictors of mortality

2005 ◽  
Vol 61 (2) ◽  
pp. 146-154 ◽  
Author(s):  
M. Weinberger ◽  
L. Leibovici ◽  
S. Perez ◽  
Z. Samra ◽  
I. Ostfeld ◽  
...  
Keyword(s):  
Candida Albicans ◽  
Candida Species ◽  
Predictors Of Mortality

scholarly journals Species identification of Candida isolated from clinical specimens in a tertiary care hospital

2016 ◽  
Vol 9 (1) ◽  
pp. 20 ◽  
Author(s):  
Lsmet Nigar ◽  
Shirin Tarafder ◽  
Rehana Razzak Khan ◽  
S. M. Ali Ahmed ◽  
Ahmed Abu Saleh
Keyword(s):  
Candida Albicans ◽  
Candida Species ◽  
Tertiary Care ◽  
Clinical Manifestations ◽  
Common Species ◽  
Blood Stream ◽  
Care Hospital ◽  
Emerging Pathogens ◽  
Predisposing Factor ◽  
Clinical Specimens

<p><strong>Background:</strong> Candida species are responsible for various clinical manifestations from mucocutaneous overgrowth to blood stream infections especially in immunocompromized situations. Although C. albicans is the most prevalent species, high incidence of non-albicans Candida species with antifungal resistance are emerging which is posing a serious threat to the patients care.</p><p><strong>Objective:</strong> This study aimed to isolate and identify different species of Candida from different clinical specimens. Methods: A total of 100 different clinical specimens were studied of which 35 were oral swab, 28 were high vaginal swab, 15 were urine, 14 were nail, 04 were bronchoalveolar lavage and peritoneal fluid were 04. Among 100 clinical specimens, Candida isolates were identified in 64 specimens. Isolation of Candida species was done by primary culture in SDA. Subsequent identification of species were performed by germ tube test, subculture in chromo­genic agar medium and carbohydrate assimilation test with commonly used twelve sugars.</p><p><strong>Results:</strong> Out of 64 isolated Candida species, Candida albicans were 51.56% and the non-albicans Candida species were 48.44%. The most prevalent Candida species was C. albicans 33 (51.53%) followed by C. tropicalis 17 (26.56%). C. glabrata 4 (6.25%), C. parapsilo­sis 4 (6.25%), C. krusei 3 (4.68%) and C. guilliermondii 2 (3.2%). One of the isolated Candida species was unidentified.</p><p><strong>Conclusion:</strong> Though Candida albicans was found as the most common species, but non-albicans Candida species are appearing as emerging pathogens as well. Exposure to chemotherapy appeared to be the commonest predisposing factor for Candida infection followed by indwelling urinary catheter in situ for prolong period.</p>

scholarly journals Candida esophagitis: species distribution and risk factors for infection

2008 ◽  
Vol 50 (5) ◽  
pp. 261-263 ◽  
Author(s):  
Dimas Alexandre Kliemann ◽  
Alessandro Comarú Pasqualotto ◽  
Maicon Falavigna ◽  
Thiane Giaretta ◽  
Luiz Carlos Severo
Keyword(s):  
Risk Factors ◽  
Candida Albicans ◽  
Species Distribution ◽  
Mixed Infection ◽  
Candida Species ◽  
Medical Centre ◽  
Oral Candidosis ◽  
Candida Esophagitis ◽  
Predisposing Conditions

Although Candida albicans is the main cause of fungal esophagitis, other species such as C. tropicalis, C. krusei and C. stellatoidea have also been implicated. Several studies have identified risk factors for C. albicans esophagitis. However, data for non-C. albicans species is still sparse. The aim of this study was to determine the etiology of Candida esophagitis in our medical centre over an 18-month period. Additionally, we aimed to investigate predisposing conditions for esophageal candidosis caused by different Candida species. A total of 21,248 upper gastroscopies were performed in Santa Casa Complexo Hospitalar between January 2005 and July 2006. The prevalence of Candida esophagitis was 0.74% (n = 158). C. albicans caused the vast majority of infections (96.2%), followed by C. tropicalis (2.5%), C. lusitaniae (0.6%) and C. glabrata (0.6%). There were 81 women (51.3%) and 77 men (48.7%). No case of mixed infection occurred. Concomitant oral candidosis was documented for 10.8% (n = 17). Most of cases (55.1%) involved outpatients. Around one fifth of patients in our cohort had no identifiable risk factors for esophageal candidosis (20.8%). Since nearly all infections were caused by C. albicans we were not able to determine risk factors for esophagitis caused by other Candida species.

scholarly journals Molecular characterization of Candida dubliniensis and Candida albicans in the oral cavity of drug abusers using duplex polymerase chain reaction

2018 ◽  
Vol 4 (1) ◽  
Author(s):  
Parastoo Hassani Abharian ◽  
Parvin Dehghan ◽  
Peyman Hassani Abharian ◽  
Sepideh Tolouei
Keyword(s):  
Polymerase Chain Reaction ◽  
Candida Albicans ◽  
Oral Cavity ◽  
Candida Species ◽  
Species Complex ◽  
Candida Dubliniensis ◽  
Drug Abusers ◽  
Chain Reaction ◽  
Polymerase Chain ◽  
Duplex Polymerase Chain Reaction

  Background and Purpose: Candida dubliniensis is closely related to the most pathogenic and prevalent yeast, namely C. albicans. Candida species can opportunistically overgrow in vulnerable individuals and cause a variety of diseases. The current study aimed to identify and isolate C. dubliniensis species present in the Candida albicans species complex identified in the oral cavity of drug abusers. Materials and Methods: This study was conducted on 53 strains of C. albicans species complex, isolated from the oral mucosa of drug abusers in Isfahan, Iran. DNA extraction was accomplished through boiling procedure. Duplex polymerase chain reaction (PCR) was performed to amplify ITS1-5.8S-ITS2 region using four specific primers. Fungal species were identified based on the difference in the size of the bands created in the Agarose gel. Results: Out of the 53 isolates under study, 30 (56.6%) and 14 (26.4%) samples were identified as C. albicans and C. dubliniensis, respectively. In the remaining 9 samples (17%), both types of Candida species were confirmed. Conclusion: The findings of the present study revealed the presence of a noticeable amount of C. dubliniensis in the oral cavity of drug abusers. Therefore, the probable presence of this fungus should be considered during the examination of oral infection among this group. To date, no research has directly investigated this issue in Iran.

scholarly journals Oral candidiasis-adhesion of non-albicans Candida species

2008 ◽  
pp. 69-78 ◽  
Author(s):  
Marija Bokor-Bratic
Keyword(s):  
Candida Albicans ◽  
Candida Species ◽  
Oral Candidiasis ◽  
Initial Step ◽  
Oral Microflora ◽  
Mucosal Surfaces ◽  
Buccal Epithelial Cells ◽  
Mucosal Infection ◽  
Denture Acrylics ◽  
Candida Colonisation

Oral candidiasis is an opportunistic infection caused primarily by Candida albicans. However, in recent years, species of non-albicans Candida have been implicated more frequently in mucosal infection. Candida species usually reside as commensal organisms and are part of normal oral microflora. Determining exactly how transformation from commensal to pathogen takes place and how it can be prevented is continuous challenge for clinical doctors. Candidal adherence to mucosal surfaces is considered as a critical initial step in the pathogenesis of oral candidiasis. Acrylic dentures, acting as reservoirs, play an important role in increasing the risk from Candida colonisation. Thus, this review discusses what is currently known about the adhesion of non-albicans Candida species of oral origin to buccal epithelial cells and denture acrylics.

scholarly journals Candida albicans infection in patients with oral squamous cell carcinoma

2010 ◽  
Vol 67 (9) ◽  
pp. 766-770 ◽  
Author(s):  
Milos Cankovic ◽  
Marija Bokor-Bratic
Keyword(s):  
Squamous Cell Carcinoma ◽  
Candida Albicans ◽  
Alcohol Consumption ◽  
Oral Cancer ◽  
Oral Squamous Cell Carcinoma ◽  
Candida Species ◽  
Control Group ◽  
Oral Mucosal Lesions ◽  
Mucosal Lesions ◽  
Cancer Lesion

Bacground/Aim. Systemic candidiasis in intensive care units remains an improtant problem due to antifungal resistance. Patients undergoing radiotherapy for head and neck cancer are at increased risk of developing oral candidiasis and they more frequent have prior fungi colonization. Due to identification of specific risk factors predisposing to fungal infection in order to threat such patients the aim of this study was to determine the presence of Candida species in patients with oral squamous cell carcinoma and compare it to the control subjects (patients with benign oral mucosal lesions). Methods. A total number of 30 consecutive oral cancer examined patients were included in this prospective study (24 men and 6 women with a mean age of 61.47 years, range 41-81 years). The control group consisted of 30 consecutive patients with histologically proven benign oral mucosal lesions (16 men and 14 women with a mean age of 54.53 years, range 16- 83 years). The samples for mycological examination were obtained by using sterile cotton swabs from the cancer lesion surface and in the patients of the control group from the benign mucosal lesion surface. Samples were inoculated in Sabouraud' dextrose agar. For identification purposes, Mackenzie germ tube test was performend on all isolates. Results. The prevalence of Candida was significantly higher in oral cancer patients than in control subjects (?2 = 5.455, p = 0.020). Candida was found on nine of the 30 cancer surfaces; 5 (16.7%) were identified as non-albicans Candida and 4 (13.3%) as Candida albicans. In the control group, only Candida albicans was isolated from 2 (6.7%) patients. In this study, no statistically significant differences in the presence of Candida species was found with respect to gender, age, smoking, alcohol consumption, wearing of dental protheses and the site of cancer lesion. Conclusion. The increased prevalence of yeasts on the surfaces of oral carcinoma indicates a need for their suppression before any cancer treatment. There was no evidence for an association between gender, age, smoking, alcohol consumption, wearing of dental protheses, the site of cancer lesion and the yeast presence.

scholarly journals Denture Stomatitis: Report of a Case with Rarely Used Treatment Modality and Review of Literature

2020 ◽  
Vol 4 (5) ◽  
pp. 116-119
Author(s):  
Parul Uppal Malhotra ◽  
Neera Ohri ◽  
Yagyeshwar Malhotra ◽  
Anindita Mallik
Keyword(s):  
Candida Albicans ◽  
Candida Species ◽  
Fungal Infections ◽  
Bacterial Colonization ◽  
Oral Candidiasis ◽  
Clinical Signs ◽  
Fungal Growth ◽  
Dimorphic Fungus ◽  
Denture Stomatitis ◽  
Microbial Invasion

Candida albicans is the most common Candida species isolated from the oral cavity both in healthy and diseased. Candida albicans is a dimorphic fungus existing both in blastopore phase (yeast phase) and the hyphal or mycelial phase. Although these organisms typically colonize mucocutaneous surfaces, the latter can be portals of entry into deeper tissues when host defences are compromised. Denture stomatitis is a common form of oral candidiasis that manifests as a diffuse inflammation of the maxillary denture bearing areas & is associated with angular cheilitis. At least 70% of individuals with clinical signs of denture stomatitis exhibit fungal growth & these conditions most likely result from yeast colonization of the oral mucosa combined with Bacterial colonization. Candida species act as an endogenous infecting agent on tissue predisposed by chronic trauma to microbial invasion. At one time, oral fungal infections were rare findings in general dentist's office. They were more commonly seen in hospitalized and severely debilitated patients. However with enhanced medical and pharmaceutical technology, increasing numbers of ambulatory immunosuppressed individuals with oral fungal infections are seeking out general dentists for diagnosis and treatment of these lesions.

2,5-Dimethyl-4-hydroxy-3(2H)-furanone as an Anti-biofilm Agent Against Non-Candida albicans Candida Species

2019 ◽  
Vol 184 (3) ◽  
pp. 403-411
Author(s):  
Suganthi Martena Devadas ◽  
Usha Y. Nayak ◽  
Reema Narayan ◽  
Manjunath H. Hande ◽  
Mamatha Ballal
Keyword(s):  
Candida Albicans ◽  
Candida Species

scholarly journals The The Effects of Cinnamaldehyde (Cinnamon Derivatives) and Nystatin on Candida Albicans and Candida Glabrata

2019 ◽  
Vol 7 (7) ◽  
pp. 1067-1070 ◽  
Author(s):  
Sedigheh Bakhtiari ◽  
Soudeh Jafari ◽  
Jamileh Bigom Taheri ◽  
Tahereh Sadat Jafarzadeh Kashi ◽  
Zahra Namazi ◽  
...  
Keyword(s):  
Candida Albicans ◽  
Minimum Inhibitory Concentration ◽  
Candida Species ◽  
Candida Glabrata ◽  
Inhibitory Concentration ◽  
Fungal Infections ◽  
Fungal Growth ◽  
Minimum Fungicidal Concentration ◽  
Microdilution Method

BACKGROUND: Candida species are the most common opportunistic fungal infections. Today, cinnamon plants have been considered for anti-Candida properties. AIM: This study aimed to investigate the effectiveness of cinnamaldehyde extract (from cinnamon derivatives) on Candida albicans and Candida glabrata species and comparison with nystatin. MATERIAL AND METHODS: In this study, cinnamaldehyde and nystatin were used. The specimens included Candida albicans and Candida glabrata. Minimum inhibitory concentration (MIC) and minimum fungicidal concentration (MFC) were measured for each one by the microdilution method. This experiment was repeated three times. RESULTS: Cinnamaldehyde extract at a concentration of 62.5 μl/ml was able to prevent the growth of Candida albicans, at a concentration of 93.7 μl/ml, causing Candida albicans to disappear, at 48.8 μl/ml, to prevent the growth of Candida glabrata, and in the concentration of 62.5 μl/ml, causes the loss of Candida glabrata. In comparison, nystatin at 0.5 μg/ml concentration prevented the growth of Candida albicans, at concentrations of 1 μg/ml causing Candida albicans to be destroyed, at 4 μg/ml concentration to prevent the growth of Candida glabrata, and at a concentration of 8 μg/ml causes the loss of Candida glabrata. The results were the same every three times. CONCLUSIONS: Although cinnamaldehyde extract had an effect on fungal growth in both Candida albicans and Candida glabrata with a fatal effect; the effect on these two species was lower than nystatin.

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