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Oral candida

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https://www.readbyqxmd.com/read/28645176/efficacy-of-histatin5-in-a-murine-model-of-vulvovaginal-candidiasis-caused-by-candida-albicans
#1
Hong Liao, Shanling Liu, He Wang, Hang Su, Zhenjun Liu
Histatin5 (Hst-5) is a member of the histatin family of antimicrobial peptides secreted by human parotid and submandibular glands. With the natural antibacterial activity, it plays an important role in the first-line barrier of oral cave against pathogens, especially for the fungal intrusion. In this study, we explored the utility of Hst-5 in the treatment of vulvovaginal candidiasis, a common condition of women of the childbearing age. we used a synthesized Hst-5 over five consecutive days as the topical treatment in a murine model of vulvovaginal candidiasis...
June 22, 2017: Pathogens and Disease
https://www.readbyqxmd.com/read/28630180/de-novo-acquisition-of-resistance-to-scy-078-in-candida-glabrata-involves-fks-mutations-that-both-overlap-and-are-distinct-from-those-conferring-echinocandin-resistance
#2
Cristina Jiménez-Ortigosa, Winder B Perez, David Angulo, Katyna Borroto-Esoda, David S Perlin
SCY-078 is an orally active antifungal whose target is the β-(1,3)-D-glucan synthase (GS). We evaluated the spontaneous emergence of SCY-078 resistant Candida glabrata isolates following drug exposure in vitro Resistant isolates were analyzed using broth microdilution methodology and FKS sequencing. The kinetic inhibition parameter IC50 was also determined from GS complexes. The spectrum of resistance mutations found suggested a partially overlapping but independent binding site for SCY-078 relative to echinocandins on GS...
June 19, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28629000/formulation-and-in-vitro-efficacy-of-antifungal-mucoadhesive-polymeric-matrices-for-the-delivery-of-miconazole-nitrate
#3
G Tejada, G N Piccirilli, M Sortino, C J Salomón, M C Lamas, D Leonardi
Oral candidiasis is the most common opportunistic infection affecting patients with the human immunodeficiency virus. Miconazole buccal tablets or miconazole gel are approved for the treatment of oropharyngeal candidiasis. However, buccal films present more flexibility and also offer protection for the wounded mucosa, reducing pain. Due to their small size and thickness, buccal films may improve patients' compliance, compared to tablets. Additionally, they may increase the relatively short residence time on the mucosa of oral gels, which are easily removed by saliva...
October 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28623814/synthesis-antimicrobial-antiquorum-sensing-and-antitumor-activities-of-new-benzimidazole-analogs
#4
N S El-Gohary, M I Shaaban
New benzimidazole analogs were prepared and tested for antimicrobial efficacy toward Escherichia coli ATCC 12435, Bacillus cereus UW 85, Staphylococcus aureus ATCC 29213, Candida albicans and Aspergillus fumigatus 293. Results indicated that compound 10 has potent and broad spectrum antimicrobial activity. In addition, 4b and 5c showed eminent antimicrobial efficacy toward B. cereus, S. aureus, C. albicans and A. fumigatus. Furthermore, 12 and 14 demonstrated interesting antifungal activity toward C. albicans...
June 3, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28622549/immunological-and-epidemiological-factors-affecting-candidiasis-in-hiv-patients-beginning-antiretroviral-therapy-in-an-asian-clinic
#5
Endah A T Wulandari, Henny Saraswati, Robiatul Adawiyah, Samsuridjal Djauzi, Retno Wahyuningsih, Patricia Price
OBJECTIVES: Oropharyngeal candidiasis (OPC) is common in HIV patients beginning antiretroviral therapy (ART). Here we address the response to ART, and the roles of poor oral hygiene and defects in local innate immunity with a focus on salivary β-defensins, as they are implicated in control of candidiasis but have not been investigated in this context. DESIGN: ART naïve HIV-infected adults (n=82) with <200 CD4(+) T-cells/mm(3) attending clinics at Cipto Mangunkusumo Hospital, Jakarta, were examined at the commencement of ART, and 73 were re-examined after 3 months...
June 3, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28622460/antifungal-activity-of-tyrosol-and-farnesol-used-in-combination-against-candida-species-in-the-planktonic-state-or-forming-biofilms
#6
Douglas Roberto Monteiro, Laís Salomão Arias, Renan Aparecido Fernandes, Lucas Fernando Deszo da Silva, Manoel Olavo Valentim Fernandes de Castilho, Thaís Oliveira da Rosa, Ana Paula Miranda Vieira, Fabiana Gouveia Straioto, Débora Barros Barbosa, Alberto Carlos Botazzo Delbem
AIM: This study examined the antifungal activity of the combination of tyrosol and farnesol against Candida albicans and Candida glabrata in the planktonic state or forming biofilms. METHODS AND RESULTS: The effect of drug association against Candida planktonic cells was assessed by the fractional inhibitory concentration index. Mono and dual-species biofilms were developed (24 h) and the compounds, applied during 3 days, with 2 daily treatments of 1 minute each...
June 16, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28617874/candida-albicans-mannans-mediate-streptococcus-mutans-exoenzyme-gtfb-binding-to-modulate-cross-kingdom-biofilm-development-in-vivo
#7
Geelsu Hwang, Yuan Liu, Dongyeop Kim, Yong Li, Damian J Krysan, Hyun Koo
Candida albicans is frequently detected with heavy infection by Streptococcus mutans in plaque-biofilms from children with early-childhood caries (ECC). This cross-kingdom biofilm contains an extensive matrix of extracellular α-glucans that is produced by an exoenzyme (GtfB) secreted by S. mutans. Here, we report that mannans located on the outer surface of C. albicans cell-wall mediates GtfB binding, enhancing glucan-matrix production and modulating bacterial-fungal association within biofilms formed in vivo...
June 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28607100/control-of-mucosal-candidiasis-in-the-zebrafish-swimbladder-depends-on-neutrophils-that-block-filament-invasion-and-drive-extracellular-trap-production
#8
Remi L Gratacap, Allison K Scherer, Brittany G Seman, Robert T Wheeler
Candida albicans is a ubiquitous mucosal commensal that is normally prevented from causing acute or chronic invasive disease. Neutrophils contribute to protection in oral infection but exacerbate vulvovaginal candidiasis. To dissect the role of neutrophils during mucosal candidiasis we took advantage of a new, transparent zebrafish swimbladder infection model. Intravital microscopic tracking of individual animals revealed that blocking neutrophil recruitment leads to rapid mortality in this model through faster disease progression...
June 12, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28605597/bacterial-gtfb-augments-candida-albicans-accumulation-in-cross-kingdom-biofilms
#9
K Ellepola, Y Liu, T Cao, H Koo, C J Seneviratne
Streptococcus mutans is a biofilm-forming oral pathogen commonly associated with dental caries. Clinical studies have shown that S. mutans is often detected with Candida albicans in early childhood caries. Although the C. albicans presence has been shown to enhance bacterial accumulation in biofilms, the influence of S. mutans on fungal biology in this mixed-species relationship remains largely uncharacterized. Therefore, we aimed to investigate how the presence of S. mutans influences C. albicans biofilm development and coexistence...
June 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28601915/volatile-organic-compounds-in-the-breath-of-oral-candidiasis-patients-a-pilot-study
#10
Moritz Hertel, Eyke Schuette, Isabell Kastner, Stefan Hartwig, Andrea Maria Schmidt-Westhausen, Robert Preissner, Sebastian Paris, Saskia Preissner
OBJECTIVES: The aim of the study was to investigate whether specific volatile organic compounds (VOCs) can be detected in oral candidiasis patients using breath analysis in order to develop a point-of-care diagnostic tool. PATIENTS/METHODS: Breath samples of 10 diseased patients and 10 subjects carrying no Candida spp. were analyzed using gas chromatography and mass spectrometry. In infected patients, breath tests were performed before and after antifungal therapy...
June 10, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28597967/anidulafungin-for-the-treatment-of-candidaemia-caused-by-candida-parapsilosis-analysis-of-pooled-data-from-six-prospective-clinical-studies
#11
Dimitrios P Kontoyiannis, Matteo Bassetti, Marcio Nucci, Maria Rita Capparella, Jean L Yan, Jalal Aram, Patricia A Hogan
Concerns with echinocandin use for infections caused by Candida parapsilosis complex species have driven the need for data to support echinocandin clinical efficacy in such patients. Data from six prospective studies were pooled to assess efficacy and safety of anidulafungin in patients with candidaemia caused by C. parapsilosis. Patient-level data were pooled from patients with microbiologically confirmed candidaemia due to C. parapsilosis treated with anidulafungin. Patients received a 200 mg intravenous (IV) loading dose of anidulafungin (day 1) and 100 mg daily thereafter...
June 9, 2017: Mycoses
https://www.readbyqxmd.com/read/28597685/a-gain-of-function-mutation-of-stat1-a-novel-genetic-factor-contributing-to-chronic-mucocutaneous-candidiasis
#12
Narges Eslami, Marzieh Tavakol, Mehrnaz Mesdaghi, Mohammad Gharegozlou, Jean-Laurent Casanova, Anne Puel, Satoshi Okada, Saba Arshi, Mohammad Hassan Bemanian, Morteza Fallahpour, Rasool Molatefi, Farhad Seif, Samaneh Zoghi, Nima Rezaei, Mohammad Nabavi
Heterozygous gain-of-function (GOF) mutations in the signal transducer and activator of transcription 1 (STAT1) have increasingly been identified as a genetic cause of autosomal-dominant (AD) chronic mucocutaneous candidiasis (CMC). In this article, we describe a 33-year-old man who experienced chronic refractory candidiasis, recurrent otitis media, and pneumonia resulting in bronchiectasis, severe oral and esophageal candidiases with strictures associated with hypothyroidism and immune hemolytic anemia. His son also suffered from persistent candidiasis, chronic diarrhea, poor weight gain, and pneumonia that resulted in his demise because of sepsis...
June 9, 2017: Acta Microbiologica et Immunologica Hungarica
https://www.readbyqxmd.com/read/28591257/oral-candida-spp-carriage-and-periodontal-diseases-in-hiv-infected-patients-in-ribeir%C3%A3-o-preto-brazil
#13
Alan Grupioni Lourenço, Ana Elisa Rodrigues Alves Ribeiro, Cristiano Nakao, Ana Carolina Fragoso Motta, Luana Grupioni Lourenço Antonio, Alcyone Artioli Machado, Marilena Chinali Komesu
The majority of HIV-infected patients develop Candida spp-associated clinical oral lesions. Studies have shown that asymptomatic oral colonization of Candida spp may lead to oral lesions or become a source of disseminated infections. The aim of this study was to verify the effects of periodontal conditions on Candida spp prevalence and Candida spp carriage in the oral cavity of HIV-infected patients compared to non-infected patients. Twenty-five patients not infected with HIV and 48 HIV-infected patients were classified according to periodontal conditions as being periodontal healthy or with periodontal disease...
June 1, 2017: Revista do Instituto de Medicina Tropical de São Paulo
https://www.readbyqxmd.com/read/28591237/association-between-pathogens-from-tracheal-aspirate-and-oral-biofilm-of-patients-on-mechanical-ventilation
#14
Luana Carneiro Diniz Souza, Vanise Barros Rodrigues da Mota, Alícia Valéria Dos Santos Zaranza de Carvalho, Rita da Graça Carvalhal Frazão Corrêa, Silvana Amado Libério, Fernanda Ferreira Lopes
The aim of this study was to detect possible associations between respiratory pathogens from tracheal aspirate and oral biofilm samples in intubated patients in an intensive care unit (ICU), and to identify the most common respiratory pathogens in oral biofilm, particularly in patients that developed ventilator-associated pneumonia (VAP). Two oral biofilm samples were collected from the tongue of intubated patients (at admission and after 48 hours) and analyzed by culture with the Antibiotic Sensitivity Test...
June 5, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28588252/candida-albicans-sap6-amyloid-regions-function-in-cellular-aggregation-and-zinc-binding-and-contribute-to-zinc-acquisition
#15
Rohitashw Kumar, Christine Breindel, Darpan Saraswat, Paul J Cullen, Mira Edgerton
Candida albicans is an opportunistic fungal pathogen colonizing the oral cavity. C. albicans secreted aspartic protease Sap6 is important for virulence during oral candidiasis since it degrades host tissues to release nutrients and essential transition metals. We found that zinc specifically increased C. albicans autoaggregation induced by Sap6; and that Sap6 itself bound zinc ions. In silico analysis of Sap6 predicted four amyloidogenic regions that were synthesized as peptides (P1-P4). All peptides, as well as full length Sap6, demonstrated amyloid properties, and addition of zinc further increased amyloid formation...
June 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28585001/testing-antifungal-vaccines-in-an-animal-model-of-invasive-candidiasis-and-in-human-mucosal-candidiasis
#16
Esther Segal
The following article will concentrate on the NDV-3 anti-Candida and Staphylococcus vaccine. The vaccine is composed of the N-terminal portion of the Candida albicans agglutinin-like sequence 3 protein (Als3p) and aluminum hydroxide as adjuvant. The vaccine conferred protection to mice against experimental vaginal, oral, and intravenous challenge with C. albicans. Due to the sequence and structural homology of the Als3p with Staphylococcus aureus surface proteins, the vaccine also protected against experimental skin and IV infection with S...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28584994/preparation-of-an-oral-vaccine-by-proteome-analysis-and-molecular-display-technology
#17
Seiji Shibasaki, Mitsuyoshi Ueda
In recent years, genetic engineering and protein expression technologies have promoted the development of recombinant protein vaccines. To accelerate the development of efficient vaccines for mycosis, screening candidate antigens, and determining the optimal route of administration are indispensable steps. Two methods for identifying novel antigens and producing antigens specific to Candida albicans, as a model causative pathogen of mycosis, are discussed in this chapter. Specifically, the application of liquid chromatography/tandem mass spectrometry using a long monolithic column for proteome analysis to identify virulence factors of C...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28577425/denaturing-gradient-gel-electrophoresis-profiles-of-bacteria-from-the-saliva-of-twenty-four-different-individuals-form-clusters-that-showed-no-relationship-to-the-yeasts-present
#18
Manjula M Weerasekera, Chris H Sissons, Lisa Wong, Sally A Anderson, Ann R Holmes, Richard D Cannon
OBJECTIVES: The aim was to investigate the relationship between groups of bacteria identified by cluster analysis of the DGGE fingerprints and the amounts and diversity of yeast present. METHODS: Bacterial and yeast populations in saliva samples from 24 adults were analysed using denaturing gradient gel electrophoresis (DGGE) of the bacteria present and by yeast culture. RESULTS: Eubacterial DGGE banding patterns showed considerable variation between individuals...
May 22, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28575640/the-effect-of-subinhibitory-concentrations-of-gentian-violet-on-the-germ-tube-formation-by-candida-albicans-and-its-adherence-to-oral-epithelial-cells
#19
T Mafojane, S L Shangase, M Patel
OBJECTIVE: This study investigated the effect of subinhibitory concentrations of gentian violet on the germ tube formation by Candida albicans and its adherence ability to oral epithelial cells. METHODS: Thirty strains of C. albicans isolated from denture wearers, normal healthy individuals and HIV positive patients were used in the study. The antifungal property (Minimum Fungicidal Concentration) of gentian violet was determined at various time intervals using a microdilution technique...
May 25, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28566081/-a-rarely-isolated-bacterium-in-microbiology-laboratories-streptococcus-uberis
#20
Canan Eryıldız, Şebnem Bukavaz, Şaban Gürcan, Osman Hatipoğlu
Streptococcus uberis is a gram-positive bacterium that is mostly responsible for mastitis in cattle. The bacterium rarely has been associated with human infections. Conventional phenotyphic methods can be inadequate for the identification of S.uberis; and in microbiology laboratories S.uberis is confused with the other streptococci and enterococci isolates. Recently, molecular methods are recommended for the accurate identification of S.uberis isolates. The aim of this report is to present a lower respiratory tract infection case caused by S...
April 2017: Mikrobiyoloji Bülteni
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