scholarly journals Integrated Analysis of Clinical and Microbiome Risk Factors Associated with the Development of Oral Candidiasis during Cancer Chemotherapy

2019 ◽  
Vol 5 (2) ◽  
pp. 49 ◽  
Author(s):  
Patricia Diaz ◽  
Bo-Young Hong ◽  
Amanda Dupuy ◽  
Linda Choquette ◽  
Angela Thompson ◽  
...  
Keyword(s):  
Cancer Chemotherapy ◽  
High Throughput Sequencing ◽  
Oral Candidiasis ◽  
Alpha Diversity ◽  
Abundant Species ◽  
Salivary Flow ◽  
Common Side Effect ◽  
Integrated Analysis ◽  
Factors Associated ◽  
Baseline Factors

Oral candidiasis is a common side effect of cancer chemotherapy. To better understand predisposing factors, we followed forty-five subjects who received 5-fluorouracil- or doxorubicin-based treatment, during one chemotherapy cycle. Subjects were evaluated at baseline, prior to the first infusion, and at three additional visits within a two-week window. We assessed the demographic, medical and oral health parameters, neutrophil surveillance, and characterized the salivary bacteriome and mycobiome communities through amplicon high throughput sequencing. Twenty percent of all subjects developed oral candidiasis. Using multivariate statistics, we identified smoking, amount of dental plaque, low bacteriome and mycobiome alpha-diversity, and the proportions of specific bacterial and fungal taxa as baseline predictors of oral candidiasis development during the treatment cycle. All subjects who developed oral candidiasis had baseline microbiome communities dominated by Candida and enriched in aciduric bacteria. Longitudinally, oral candidiasis was associated with a decrease in salivary flow prior to lesion development, and occurred simultaneously or before oral mucositis. Candidiasis was also longitudinally associated with a decrease in peripheral neutrophils but increased the neutrophil killing capacity of Candida albicans. Oral candidiasis was not found to be associated with mycobiome structure shifts during the cycle but was the result of an increase in Candida load, with C. albicans and Candida dubliniensis being the most abundant species comprising the salivary mycobiome of the affected subjects. In conclusion, we identified a set of clinical and microbiome baseline factors associated with susceptibility to oral candidiasis, which might be useful tools in identifying at risk individuals, prior to chemotherapy.

scholarly journals Factors Influencing the Fungal Diversity on Audio–Visual Materials

2021 ◽  
Vol 9 (12) ◽  
pp. 2497
Author(s):  
Tereza Branysova ◽  
Martina Kracmarova ◽  
Michal Durovic ◽  
Katerina Demnerova ◽  
Hana Stiborova
Keyword(s):  
High Throughput Sequencing ◽  
Alpha Diversity ◽  
Abundant Species ◽  
Future Generations ◽  
Fungal Communities ◽  
Air Contamination ◽  
Factors Influencing ◽  
Significant Difference ◽  
Visual Materials ◽  
Cultural Heritage Objects

The biodeterioration of audio–visual materials is a huge problem, as it can cause incalculable losses. To preserve these cultural heritage objects for future generations, it is necessary to determine the main agents of biodeterioration. This study focuses on identifying fungi, both from the air and smears from photographs and cinematographic films that differ in the type of carrier and binder, using high-throughput sequencing approaches. The alpha diversity measures of communities present on all types of carriers were compared, and a significant difference between cellulose acetate and baryta paper was observed. Next, the locality, type of carrier, and audio–visual material seem to affect the structure of fungal communities. Additionally, a link between the occurrence of the most abundant classes and species on audio–visual materials and air contamination in the archives was proven. In both cases, the most abundant classes were Agariomycetes, Dothideomycetes, and Eurotiomycetes, and approximately half of the 50 most abundant species detected on the audio–visual materials and in the air were identical.

scholarly journals Experimental infection with the hookworm, Necator americanus, is associated with stable gut microbial diversity in human volunteers with relapsing multiple sclerosis

BMC Biology ◽  
2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Timothy P. Jenkins ◽  
David I. Pritchard ◽  
Radu Tanasescu ◽  
Gary Telford ◽  
Marina Papaiakovou ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Experimental Infection ◽  
High Throughput Sequencing ◽  
Alpha Diversity ◽  
Placebo Treatment ◽  
Sequencing Data ◽  
Faecal Microbiota ◽  
Microbial Composition ◽  
Necator Americanus ◽  
Human Volunteers

Abstract Background Helminth-associated changes in gut microbiota composition have been hypothesised to contribute to the immune-suppressive properties of parasitic worms. Multiple sclerosis is an immune-mediated autoimmune disease of the central nervous system whose pathophysiology has been linked to imbalances in gut microbial communities. Results In the present study, we investigated, for the first time, qualitative and quantitative changes in the faecal bacterial composition of human volunteers with remitting multiple sclerosis (RMS) prior to and following experimental infection with the human hookworm, Necator americanus (N+), and following anthelmintic treatment, and compared the findings with data obtained from a cohort of RMS patients subjected to placebo treatment (PBO). Bacterial 16S rRNA high-throughput sequencing data revealed significantly decreased alpha diversity in the faecal microbiota of PBO compared to N+ subjects over the course of the trial; additionally, we observed significant differences in the abundances of several bacterial taxa with putative immune-modulatory functions between study cohorts. Parabacteroides were significantly expanded in the faecal microbiota of N+ individuals for which no clinical and/or radiological relapses were recorded at the end of the trial. Conclusions Overall, our data lend support to the hypothesis of a contributory role of parasite-associated alterations in gut microbial composition to the immune-modulatory properties of hookworm parasites.

scholarly journals Clinical Characteristics and Relevance of Oral Candida Biofilm in Tongue Smears

2021 ◽  
Vol 7 (2) ◽  
pp. 77
Author(s):  
Eunae Cho ◽  
YounJung Park ◽  
Ki-Yeol Kim ◽  
Dawool Han ◽  
Hyun Sil Kim ◽  
...  
Keyword(s):  
Clinical Characteristics ◽  
Oral Candidiasis ◽  
Salivary Flow ◽  
Nutritional Deficiencies ◽  
Low Grade ◽  
High Grade ◽  
Novel Method ◽  
Oral Candida ◽  
Antifungal Use ◽  
Candida Biofilm

Dimorphic Candida exist as commensal yeast carriages or infiltrate hyphae in the oral cavity. Here, we investigated the clinical relevance of Candida hyphae in non-pseudomembranous oral candidiasis (OC) by smears of tongue biofilms. We conducted a retrospective study of 2829 patients who had had tongue smears regardless of OC suspicion. Clinical characteristics were evaluated using a novel method of assessing hyphae. Clinical factors (moderate/severe stimulated pain, pain aggravated by stimulation, tongue dorsum appearance and initial topical antifungal use) were highly significant in the high-grade hyphae group but were statistically similar in the low-grade hyphae and non-observed hyphae group, suggesting low-grade hyphae infection as a subclinical OC state. In addition to erythematous candidiasis (EC), a new subtype named “morphologically normal symptomatic candidiasis” (MNSC) with specific pain patterns and normal tongue morphology was identified. MNSC had a significantly higher proportion of moderate and severe stimulated pain cases than EC. Low unstimulated salivary flow rate (<0.1 mL/min) was found to be a common risk factor in MNSC and EC. In non-pseudomembranous OC, pain patterns were dependent on Candida hyphae degree regardless of tongue dorsum morphology. Morphologic differences seen in high-grade hyphae infection were not associated with systemic diseases or nutritional deficiencies.

scholarly journals Prevalence of Hyposalivation in Patients with Systemic Lupus Erythematosus in a Brazilian Subpopulation

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Cristhiane Almeida Leite ◽  
Marcial Francis Galera ◽  
Mariano Martínez Espinosa ◽  
Paulo Ricardo Teles de Lima ◽  
Vander Fernandes ◽  
...  
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Lupus Erythematosus ◽  
Salivary Flow ◽  
Cross Sectional Study ◽  
Systemic Lupus ◽  
Cross Sectional ◽  
Mato Grosso ◽  
Significance Level ◽  
Factors Associated ◽  
Study Population

Background.Systemic lupus erythematosus (SLE) is a chronic inflammatory, multisystem, and autoimmune disease.Objective.The aim of this study was to describe the prevalence of hyposalivation in SLE patients and evaluate factors associated.Methods.This is a cross-sectional study developed at the Cuiaba University General Hospital (UNIC-HGU), Mato Grosso, Brazil. The study population consisted of female SLE patients treated at this hospital from 06/2010 to 12/2012. Unstimulated salivary flow rates (SFRs) were measured. Descriptive and inferential analyses were performed in all cases using a significance levelP<0.05.Results.The results showed that 79% of patients with systemic lupus erythematosus suffered from hyposalivation and that the disease activity and age in years were the factors that resulted in statistically significant differences.Conclusion.The activity of the disease, age >27 years, and the drugs used were factors associated with hyposalivation, resulting in a statistically significant decrease in saliva production.

scholarly journals Effect of Periampullary Diverticulum on Biliary Flora and the Formation of Common Bile Duct Stone

2020 ◽  
Author(s):  
Senlin Hou ◽  
Hao Wang ◽  
Lichao Zhang ◽  
Tingting Yu ◽  
Zhanying Qiao
Keyword(s):  
Bile Duct ◽  
Common Bile Duct ◽  
High Throughput Sequencing ◽  
Bile Duct Stone ◽  
Stone Formation ◽  
Intestinal Flora ◽  
Alpha Diversity ◽  
Intestinal Fluid ◽  
Bacterial Gene ◽  
Periampullary Diverticulum

Abstract Background: Bile duct stone is closely related to periampullary diverticulum, but it is not clear whether the formation of it was affected by the diverticulum through the biliary flora. To explore the diversity and correlation of biliary and intestinal flora in the patients with choledocholithiasis and the effects of periampullary diverticulum on the flora and bile duct stone. Methods: Bile and intestinal fluid were collected from patients with primary common bile duct stones, and then divided into diverticulum group and none- diverticulum group according to the presence or absence of paravertebral diverticula, DNA of these samples was extracted and a bacterial gene library was constructed, and related bioinformatics analysis was performed after high-throughput sequencing to obtain the bacterial components and community structure of the sample. Result: A total of 3001,613 valid sequences were obtained, with an average of 136436.95±3696.842 sequences, which were classified into 6021 ASV/OUT. Alpha diversity analysis showed that the species richness and diversity in the diverticulum group were lower than those in the nondiverticulum group. According to the species annotation results, the advantage bacterium group of the bile is Proteobacteria (BG 80.41%, Bg 70.95%), and advantage bacterium group of the intestinal fluid is Firmicutes and Proteobacteria (BG 89.39%, Bg 74.11%). A large proportion of Enterobacter was found in bile. Escherichia coli, Klebsiella, Streptococcus and other bacteria closely related to stone formation have been found. The proportion of E. coli in the diverticulum group was increased and due to the existence of the diverticulum Enterobacteria in the bile were increased and more complex. The bacteria that produce Betaglucuronidase are found to be increased in bile. Due to the influence of the periampullary diverticulum, the intestinal flora will be changed and then the biliary flora will also change. Conclusion: The existence of periampullary diverticulum will affect the biliary tract flora and lead to the increase of bacteria related to stone formation, which will affect the formation of choledocholithiasis and make it easier for choledocholithiasis to form.

scholarly journals Oral Disorders in Sjögren’s Syndrome

2018 ◽  
Vol 0 (0) ◽  
Author(s):  
Mirjana Sijan Gobeljic ◽  
Vera Milic ◽  
Nada Pejnovic ◽  
Nemanja Damjanov
Keyword(s):  
Sjögren’S Syndrome ◽  
Sjögren's Syndrome ◽  
Oral Candidiasis ◽  
Sjogren’S Syndrome ◽  
Salivary Flow ◽  
Sjogren's Syndrome ◽  
Sjögren Syndrome ◽  
Sjogren Syndrome ◽  
Oral Manifestations ◽  
Sjögren‘S Syndrome

Abstract Sjogren’s syndrome (SS) is a complex, chronic, systemic, autoimmune disease that mainly affects the exocrine glands, especially the salivary and lacrimal glands, leading to the dryness of the mouth and eyes, along with fatigue, joint and muscle pain. The prevalence of SS is estimated to be between 0.05% and 1% in European population. Diagnosis of SS is based on the revised criteria of the American-European consensus group (AECG). Sjogren’s syndrome can be subclassified into primary disease (primary Sjogren syndrome, pSS) and a secondary disease (secondary Sjogren syndrome, sSS) when present with rheumatoid arthritis (RA), systemic lupus erythematosus (SLE) and systemic sclerosis. The decrease in salivary flow and qualitative alterations in saliva could explain many of the oral manifestations frequently present in patients with SS. Low salivary flow may affect chewing, swallowing, speech and sleeping in pSS patients. Oral manifestations include dental erosion, dental caries, mucosal infection, ulcers and oral candidiasis. Recent studies reveal that pSS patients experience impaired olfactory and gustatory functions and have higher occurrence of oral complications such as dysgeusia, burning sensation in the tongue (BST) and halitosis. The exocrine manifestations and systemic involvement in SS significantly impact the patient’s perception of oral healthrelated quality of life (OHRQoL).

scholarly journals Baseline factors associated with early and late death in intracerebral haemorrhage survivors

2020 ◽  
Vol 27 (7) ◽  
pp. 1257-1263
Author(s):  
G. Banerjee ◽  
G. Ambler ◽  
D. Wilson ◽  
I. C. Hostettler ◽  
C. Shakeshaft ◽  
...  
Keyword(s):  
Intracerebral Haemorrhage ◽  
Late Death ◽  
Factors Associated ◽  
Baseline Factors

scholarly journals Oral health in asthmatic patients: a review

2020 ◽  
Vol 18 (1) ◽  
Author(s):  
Federica Gani ◽  
Marco Caminati ◽  
Fabio Bellavia ◽  
Andrea Baroso ◽  
Paolo Faccioni ◽  
...  
Keyword(s):  
Oral Hygiene ◽  
Oral Candidiasis ◽  
Salivary Flow ◽  
Dental Erosion ◽  
Oral Diseases ◽  
Poor Oral Hygiene ◽  
Inhaled Drugs ◽  
Local Immunity ◽  
Asthmatic Patients ◽  
Inhaled Steroids

Abstract Different drugs used to treat asthma, such as beta 2 agonists and inhaled steroids, may promote a higher risk of caries, dental erosion, periodontal disease and oral candidiasis. This article reviews the evidences of mechanisms involved in oral diseases in patients affected by asthma. The main mechanism involved is the reduction of salivary flow. Other mechanisms include: acid pH in oral cavity induced by inhaled drugs (particularly dry powder inhaled), lifestyle (bad oral hygiene and higher consumption of sweet and acidic drinks), gastroesophageal reflux, and the impairment of local immunity. In conclusion asthma is involved in the genesis of oral pathologies both directly and indirectly due to the effect of the drugs used to treat them. Other cofactors such as poor oral hygiene increase the risk of developing oral diseases in these patients. Preventive oral measures, therefore, should be part of a global care for patients suffering from asthma.

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