Distribution of Yeast Species and Risk Factors of Oral Colonization after Oral-Care Education among the Residents of Nursing Homes

Most yeasts causing infections in humans are part of commensal microflora and etiological agents of different infections when hosts become susceptible, usually due to becoming immunocompromised. The colonization of potentially pathogenic microbes in the oral cavity is increased by poor oral hygiene....

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Main Authors: Ming-Gene Tu, Chih-Chao Lin, Ya-Ting Chiang, Zi-Li Zhou, Li-Yun Hsieh, Kai-Ting Chen, Yin-Zhi Chen, Wen-Chi Cheng, Hsiu-Jung Lo
Format: Article
Language:English
Published: MDPI AG 2022-03-01
Series:Journal of Fungi
Subjects:
Online Access:https://www.mdpi.com/2309-608X/8/3/310
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author Ming-Gene Tu
Chih-Chao Lin
Ya-Ting Chiang
Zi-Li Zhou
Li-Yun Hsieh
Kai-Ting Chen
Yin-Zhi Chen
Wen-Chi Cheng
Hsiu-Jung Lo
author_facet Ming-Gene Tu
Chih-Chao Lin
Ya-Ting Chiang
Zi-Li Zhou
Li-Yun Hsieh
Kai-Ting Chen
Yin-Zhi Chen
Wen-Chi Cheng
Hsiu-Jung Lo
author_sort Ming-Gene Tu
collection DOAJ
description Most yeasts causing infections in humans are part of commensal microflora and etiological agents of different infections when hosts become susceptible, usually due to becoming immunocompromised. The colonization of potentially pathogenic microbes in the oral cavity is increased by poor oral hygiene. This follow-up survey was conducted approximately two months after providing information on proper oral care at 10 nursing homes in Taiwan. Among the 117 of 165 residents colonized by yeasts, 67 were colonized by more than one yeast species. A total of 231 isolates comprising eight fungal genera and 25 species were identified. <i>Candida albicans</i> (44.6%) was the dominant species, followed by <i>Candida glabrata</i> (17.7%), <i>Candida parapsilosis</i> (8.7%), <i>Candida tropicalis</i> (7.8%), and <i>Candida pararugosa</i> (7.3%). Residents having a yeast colony-forming unit >10 (OR, 8.897; 95% CI 2.972–26.634; <i>p</i> < 0.001) or using a wheelchair (OR, 4.682; 95% CI 1.599–13.705; <i>p</i> = 0.005) were more likely to be colonized by multiple species. By comparing before and after oral-care education, dry mouth (OR, 3.199; 95% CI 1.448–7.068; <i>p</i> = 0.011) and having heart disease (OR, 2.681; 95% CI 1.068–6.732; <i>p</i> = 0.036) emerged as two independent risk factors for increased density of colonizing yeast.
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spelling doaj.art-e53ded1506ff4e99b77fbad1cfb786cf2023-11-30T21:05:41ZengMDPI AGJournal of Fungi2309-608X2022-03-018331010.3390/jof8030310Distribution of Yeast Species and Risk Factors of Oral Colonization after Oral-Care Education among the Residents of Nursing HomesMing-Gene Tu0Chih-Chao Lin1Ya-Ting Chiang2Zi-Li Zhou3Li-Yun Hsieh4Kai-Ting Chen5Yin-Zhi Chen6Wen-Chi Cheng7Hsiu-Jung Lo8School of Dentistry, China Medical University, Taichung 404, TaiwanTaiwan Mycology Reference Center, National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, Miaoli County 350, TaiwanSchool of Dentistry, China Medical University, Taichung 404, TaiwanTaiwan Mycology Reference Center, National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, Miaoli County 350, TaiwanTaiwan Mycology Reference Center, National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, Miaoli County 350, TaiwanTaiwan Mycology Reference Center, National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, Miaoli County 350, TaiwanTaiwan Mycology Reference Center, National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, Miaoli County 350, TaiwanGeneral Biologicals Corporation, Hsinchu 300, TaiwanSchool of Dentistry, China Medical University, Taichung 404, TaiwanMost yeasts causing infections in humans are part of commensal microflora and etiological agents of different infections when hosts become susceptible, usually due to becoming immunocompromised. The colonization of potentially pathogenic microbes in the oral cavity is increased by poor oral hygiene. This follow-up survey was conducted approximately two months after providing information on proper oral care at 10 nursing homes in Taiwan. Among the 117 of 165 residents colonized by yeasts, 67 were colonized by more than one yeast species. A total of 231 isolates comprising eight fungal genera and 25 species were identified. <i>Candida albicans</i> (44.6%) was the dominant species, followed by <i>Candida glabrata</i> (17.7%), <i>Candida parapsilosis</i> (8.7%), <i>Candida tropicalis</i> (7.8%), and <i>Candida pararugosa</i> (7.3%). Residents having a yeast colony-forming unit >10 (OR, 8.897; 95% CI 2.972–26.634; <i>p</i> < 0.001) or using a wheelchair (OR, 4.682; 95% CI 1.599–13.705; <i>p</i> = 0.005) were more likely to be colonized by multiple species. By comparing before and after oral-care education, dry mouth (OR, 3.199; 95% CI 1.448–7.068; <i>p</i> = 0.011) and having heart disease (OR, 2.681; 95% CI 1.068–6.732; <i>p</i> = 0.036) emerged as two independent risk factors for increased density of colonizing yeast.https://www.mdpi.com/2309-608X/8/3/310agingdenture wearerdry mouthelderlyyeast colonizationoral-care education
spellingShingle Ming-Gene Tu
Chih-Chao Lin
Ya-Ting Chiang
Zi-Li Zhou
Li-Yun Hsieh
Kai-Ting Chen
Yin-Zhi Chen
Wen-Chi Cheng
Hsiu-Jung Lo
Distribution of Yeast Species and Risk Factors of Oral Colonization after Oral-Care Education among the Residents of Nursing Homes
Journal of Fungi
aging
denture wearer
dry mouth
elderly
yeast colonization
oral-care education
title Distribution of Yeast Species and Risk Factors of Oral Colonization after Oral-Care Education among the Residents of Nursing Homes
title_full Distribution of Yeast Species and Risk Factors of Oral Colonization after Oral-Care Education among the Residents of Nursing Homes
title_fullStr Distribution of Yeast Species and Risk Factors of Oral Colonization after Oral-Care Education among the Residents of Nursing Homes
title_full_unstemmed Distribution of Yeast Species and Risk Factors of Oral Colonization after Oral-Care Education among the Residents of Nursing Homes
title_short Distribution of Yeast Species and Risk Factors of Oral Colonization after Oral-Care Education among the Residents of Nursing Homes
title_sort distribution of yeast species and risk factors of oral colonization after oral care education among the residents of nursing homes
topic aging
denture wearer
dry mouth
elderly
yeast colonization
oral-care education
url https://www.mdpi.com/2309-608X/8/3/310
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