scholarly journals ORAL CANDIDA CARRIAGE INCLUDING SPECIATION, BIOFILM PRODUCTION AND CORRELATION WITH OCCURRENCE OF DENTAL CARIES IN STUDENT POPULATION

2019 ◽  
pp. 32-33
Author(s):  
Sumi Nandwani

The study was done to establish oral carriage of Candida, speciation, assay biofilm production and correlate the oral Candida carriage with occurrence of dental caries in students. Swab samples from oral cavity were collected from 206 students and were cultured for yeasts. Isolated yeasts were identified and detected for Biofilm production. Results: Overall Candida carriage was found in 90 of the 206 students (75 with caries). The rate of Candida carriage in students with caries (64%) was significantly higher as compared to overall carriage in students (43.7%). A total of 123 Candida strains were isolated including C albicans (63%), C tropicalis (23 %), C. parapsilosis (6 %), C. glabrata (4 %) and C. krusei (4 %). Biofilm production by C albicans was less frequent (42. 85%) than that by non-C albicans (63.33 %). and was significantly higher in students with caries than from without caries. Conclusion: We found a significant risk of dental caries with oral Candida carriage rates in student population. Candida albicans was the most common species isolated. Biofilm production was implicated in Candida virulence and was more important for non- C.albicans than C.albicans strains to establish infections.

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Qiuxiang Zhang ◽  
Sujia Qin ◽  
Xianyin Xu ◽  
Jianxin Zhao ◽  
Hao Zhang ◽  
...  

Streptococcus mutans is a recognized cariogenic bacterium and a major producer of biofilm matrix. The presence of Candida albicans in dental plaque with S. mutans enhances the virulence leading to the onset of rampant caries which is similar to early childhood caries (ECC). The purpose of this study was to explore the effect of Lactobacillus plantarum CCFM8724 (CCFM8724) on the treatment and prevention of dental caries induced by S. mutans and C. albicans in vivo. Rats were divided into 6 groups: the control group and model group, 2 treatment groups, and 2 prevention groups (0.02% chlorhexidine or CCFM8724). The fluctuation of microbial colonization and the change of bacteria flora in rat oral cavity after sowing of L. plantarum CCFM8724 were investigated by colony-forming units (CFU) and microflora analysis. The caries of rats were assessed by microcomputed tomography (micro-CT) and Keyes scoring method. The results showed that L. plantarum CCFM8724 in both the treatment and prevention groups could significantly decrease the population of S. mutans and C. albicans in the rats’ oral cavity ( p < 0.001 ), the mineral loss of enamel ( p < 0.05 ), and the scores of caries ( p < 0.05 ). Besides, L. plantarum CCFM8724 exhibited better effects than chlorhexidine. Hence, L. plantarum CCFM8724 was proved to be a potential oral probiotic on caries treatment and prevention in vivo and it may have the prospect of application in dental caries (especially ECC) prevention products.


2019 ◽  
Author(s):  
Bijay kumar Shrestha ◽  
Jenish Shakya ◽  
Hemanta Khanal

Abstract Background: Candida are almost universal on normal adult skin and C. albicans is part of the normal flora of the mucous membranes of the respiratory, gastrointestinal, and female genital tracts. It is acknowledged that diabetic patients are more susceptible to infections caused by Candida albicans due to increased blood glucose and inability of immune system in eradicating the fungus. Studies suggest that Gutkha consumers are also at high risk of oral Candida carriage . Materials and methodology The participants were provided 10 ml of Normal saline and were asked to oral rinse for 1 minute. Oral rinse was collected in a sterile screw capped container and was transported in cold chain to microbiology laboratory. The oral rinse sample was inoculated onto the Sabouraud dextrose agar with Chloramphenicol and was incubated at 37°C for 3-4 days. The Colony forming Unit of candida was compared among diabetic and healthy controls. The candida albicans were identified by Germ tube formation. The Candida albicans isolates were subjected to Biofilm assay, Antifungal susceptibility Test, Haemolysin assay, Haemolysis degree and phospholipase assay. Result: This study reported 31.5% prevalence of oral Candida.The Candida carriage in CFU of diabetic population was statistically significant (p<0.05). The maximum isolates were found to be Biofilm producers. There was significant association between Gutkha consumers with oral Candida carriage. The study suggests that there is higher colonization of Candida in diabetic populations than in healthy population. The result also concludes that frequency of Candida in Oral cavity of Gutkha consumers was also higher (p<0.05). All isolated strains of Candida albicans were tested for antifungal susceptibility testing and 76.19% were found to be Resistant to Fluconazole and 50% were found to be resistant to Amphotericin B. There was statistical significance in Biofilm formation and fluconazole Drug resistance. Conclusion The findings indicated highest colonization of oral Candida in diabetic population and in Gutkha consumers. The greatest numbers of isolated Candida albicans were biofilm producer which showed greater frequency of Fluconazole drug resistance.


Author(s):  
Abdalhaq Hussin Alhasani ◽  
Ameen Abdullah Yahya Al-Akwa ◽  
Hassan Abdul wahab Al-Shamahy ◽  
Hussein Mohammad Shoga Al-deen ◽  
Mohammed A Al-labani

Background and aims: Fixed Orthodontic Appliances (FOA) act as diverse impact zones and modify microbial adherence and colonization, acting as unfamiliar reserves and potential sources of infection  This study was conducted to inspect the effect of the introduction of fixed orthodontic appliances on the growth and adherence (biofilm formation) of Candida species. And also to reveal the species distribution and antifungal sensitivity to isolated Candida species.  Material and methods: The trial group was chosen   from orthodontic patients whom were inspected clinically as soon as to get baseline information prior to active treatment. The group included 210 patients; 165 females, and 45 males, (mean age 21.6 ± 4.5 years). Clinical, demographic, and risk factor data were collected in a standard questionnaire and then each individual was directed to perform an oral rinse with phosphate-buffered saline, which was expectorated and processed proposed for the isolation and identification of Candida species by standard methods. After that, the isolated Candida species were tested for biofilm production by the phenotypic method i.e. Tissue culture palate methods (TCPM). Finally, antibiogram susceptibility pattern of oral Candida species was done by Kirby-Bauer disc diffusion method for amphotericin B, ketoconazole, and fluconazole. Results: The most common yeast colonized oral cavity after the introduction of FOA was C. albicans (72.5%), followed by C. glabrata and C. tropicalis  (12.5%), while Candida parapsilosis  only was 2.5%. The rate of formation of biofilms was 52.5% for all types of Candida, and it was found that biofilm formation occurs more frequently among C. tropicals  and C. glabrata (60%) than C. albicans (48.3%). All Candida species isolates were sensitive to amphotericin B and ketoconazole while resistance to fluconazole was found in 40% of C. tropicalis and 20% in C. glabrata  and 13.8% in C. albicans.  Conclusion: The present study proved that C. albicans is still the major isolate from the oral cavity after the introduction of FOA, but non-albicans species colonization is raised and FOA might be a factor for biofilm formation. The C. tropicalis and C. glabrata were more– biofilm-producers compared to C. albicans. The isolated species in the current study are less susceptible to fluconazole and drug resistant factor in the Candida species isolates was found to be associated with  biofilm formation. Peer Review History: Received 24 July 2020; Revised 13 August; Accepted 4 September, Available online 15 September 2020 UJPR follows the most transparent and toughest ‘Advanced OPEN peer review’ system. The identity of the authors and, reviewers will be known to each other. This transparent process will help to eradicate any possible malicious/purposeful interference by any person (publishing staff, reviewer, editor, author, etc) during peer review. As a result of this unique system, all reviewers will get their due recognition and respect, once their names are published in the papers. We expect that, by publishing peer review reports with published papers, will be helpful to many authors for drafting their article according to the specifications. Auhors will remove any error of their article and they will improve their article(s) according to the previous reports displayed with published article(s). The main purpose of it is ‘to improve the quality of a candidate manuscript’. Our reviewers check the ‘strength and weakness of a manuscript honestly’. There will increase in the perfection, and transparency. Received file Average Peer review marks at initial stage: 6.5/10 Average Peer review marks at publication stage: 8.0/10 Reviewer(s) detail: Name: Dr. Wadhah Hassan Edrees Affiliation: Hajjah University, Yemen E-mail: [email protected]   Name: Dr. Muhammad Zahid Iqbal Affiliation: AIMST University, Kedah Darul Aman, Malaysia E-mail: [email protected]   Comments of reviewer(s): Similar Articles: ORAL CANDIDA ALBICANS COLONIZATION RATE IN FIXED ORTHODONTICS PATIENTS ORAL C. ALBICANS COLONIZATION AND NON-CANDIDA ALBICANS CANDIDA COLONIZATION AMONG UNIVERSITY STUDENTS, YEMEN PREVALENCE AND ASSOCIATED FACTORS OF ORAL NON-CANDIDA ALBICANS CANDIDA CARRIAGE IN DENTURE WEARERS IN SANA'A CITY- YEMEN


2019 ◽  
Vol 4 (1) ◽  
pp. 87-91
Author(s):  
Leandro COSTA ◽  
Larissa SOARES-SILVA ◽  
Paulini Malfei De C. COSTA ◽  
Adrielle MANGABEIRA ◽  
Maristela PORTELA ◽  
...  

2009 ◽  
Vol 20 (4) ◽  
pp. 336-340 ◽  
Author(s):  
Beatriz Silva Câmara Mattos ◽  
Andréa Alves de Sousa ◽  
Marina Helena C. G. de Magalhães ◽  
Marcia André ◽  
Reinaldo Brito e Dias

Patients using obturator prostheses often present denture-induced stomatitis. In order to detect the presence of oral Candida albicans in patients with oronasal communications and to evaluate the effectiveness of a topical antifungal treatment, cytological smears obtained from the buccal and palatal mucosa of 10 adult patients, and from the nasal acrylic surface of their obturator prostheses were examined. A therapeutic protocol comprising the use of oral nystatin (Mycostatin®) and prosthesis disinfection with sodium hypochlorite was prescribed for all patients. Seven patients were positive for C. albicans in the mucosa, with 1 negative result for the prosthetic surface in this group of patients. Post-treatment evaluation revealed the absence of C. albicans on prosthesis surface and on the oral mucosa of all patients. The severity of the candidal infection was significantly higher in the palatal mucosa than in the buccal mucosa, but similar in the palatal mucosa and prosthesis surface, indicating that the mucosa underlying the prosthesis is more susceptible to infection. The therapeutic protocol was effective in all cases, which emphasizes the need for denture disinfection in order to avoid reinfection of the mucosa.


Pathogens ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 314
Author(s):  
Daniella Renata Faria ◽  
Raquel Cabral Melo ◽  
Glaucia Sayuri Arita ◽  
Karina Mayumi Sakita ◽  
Franciele Abigail Vilugron Rodrigues-Vendramini ◽  
...  

Candida albicans is the most common species isolated from nosocomial bloodstream infections. Due to limited therapeutic arsenal and increase of drug resistance, there is an urgent need for new antifungals. Therefore, the antifungal activity against C. albicans and in vivo toxicity of a 1,3,4-oxadiazole compound (LMM6) was evaluated. This compound was selected by in silico approach based on chemical similarity. LMM6 was highly effective against several clinical C. albicans isolates, with minimum inhibitory concentration values ranging from 8 to 32 µg/mL. This compound also showed synergic effect with amphotericin B and caspofungin. In addition, quantitative assay showed that LMM6 exhibited a fungicidal profile and a promising anti-biofilm activity, pointing to its therapeutic potential. The evaluation of acute toxicity indicated that LMM6 is safe for preclinical trials. No mortality and no alterations in the investigated parameters were observed. In addition, no substantial alteration was found in Hippocratic screening, biochemical or hematological analyzes. LMM6 (5 mg/kg twice a day) was able to reduce both spleen and kidneys fungal burden and further, promoted the suppresses of inflammatory cytokines, resulting in infection control. These preclinical findings support future application of LMM6 as potential antifungal in the treatment of invasive candidiasis.


2016 ◽  
Vol 9 (1) ◽  
pp. 20 ◽  
Author(s):  
Lsmet Nigar ◽  
Shirin Tarafder ◽  
Rehana Razzak Khan ◽  
S. M. Ali Ahmed ◽  
Ahmed Abu Saleh

<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>


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