keyword
MENU ▼
Read by QxMD icon Read
search

Candida drug resistance

keyword
https://www.readbyqxmd.com/read/29792138/therapeutic-potential-of-phytomedicines-and-novel-polymeric-strategies-for-significant-management-of-candidiasis
#1
Surbhi Rohilla, D C Bhatt, Aditi Gupta
BACKGROUND: Candidiasis is one of the most common opportunistic fungal infections caused by genus Candida. The genus composed of around 200 species. The most virulent among all are, Candida albicans followed by various non-albicans species. Despite of various treatments available, the incidence of severe systemic fungal infections is increasing, and with it the related morbidity and mortality, in relation to the misuse of antimicrobials and the emergence of drug-resistant fungal species...
May 23, 2018: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/29791841/functional-genomic-screening-reveals-core-modulators-of-echinocandin-stress-responses-in-candida-albicans
#2
Tavia Caplan, Elizabeth J Polvi, Jinglin L Xie, Shoshana Buckhalter, Michelle D Leach, Nicole Robbins, Leah E Cowen
Candida albicans is a leading cause of death due to fungal infection. Treatment of systemic candidiasis often relies on echinocandins, which disrupt cell wall synthesis. Resistance is readily acquired via mutations in the drug target gene, FKS1. Both basal tolerance and resistance to echinocandins require cellular stress responses. We performed a systematic analysis of 3,030 C. albicans mutants to define circuitry governing cellular responses to echinocandins. We identified 16 genes for which deletion or transcriptional repression enhanced echinocandin susceptibility, including components of the Pkc1-MAPK signaling cascade...
May 22, 2018: Cell Reports
https://www.readbyqxmd.com/read/29789366/loss-of-upc2p-inducible-erg3-transcription-is-sufficient-to-confer-niche-specific-azole-resistance-without-compromising-candida-albicans-pathogenicity
#3
Arturo Luna-Tapia, Hubertine M E Willems, Josie E Parker, Hélène Tournu, Katherine S Barker, Andrew T Nishimoto, P David Rogers, Steven L Kelly, Brian M Peters, Glen E Palmer
Inactivation of sterol Δ5,6 -desaturase (Erg3p) in the prevalent fungal pathogen Candida albicans is one of several mechanisms that can confer resistance to the azole antifungal drugs. However, loss of Erg3p activity is also associated with deficiencies in stress tolerance, invasive hyphal growth, and attenuated virulence in a mouse model of disseminated infection. This may explain why relatively few erg3 -deficient strains have been reported among azole-resistant clinical isolates. In this study, we examined the consequences of Erg3p inactivation upon C...
May 22, 2018: MBio
https://www.readbyqxmd.com/read/29788070/vt-1598-inhibits-the-in-vitro-growth-of-mucosal-candida-strains-and-protects-against-fluconazole-susceptible-and-resistant-oral-candidiasis-in-il-17-signalling-deficient-mice
#4
Timothy J Break, Jigar V Desai, Kelley R Healey, Mukil Natarajan, Elise M N Ferre, Christina Henderson, Adrian Zelazny, Ulrich Siebenlist, Christopher M Yates, Oren J Cohen, Robert J Schotzinger, David S Perlin, Edward P Garvey, Michail S Lionakis
Background: Chronic mucocutaneous candidiasis (CMC) treatment often induces drug resistance, posing long-term challenges. A novel broad-spectrum fungal CYP51 inhibitor, VT-1598, specifically targets fungal CYP51, but not human CYP enzymes. Objectives: To determine the efficacy of VT-1598 in the treatment of oral Candida infection caused by fluconazole-susceptible and -resistant clinical isolates. Methods: The MICs of VT-1598 and fluconazole for 28 Candida isolates recovered from patients with inherited CMC were determined using CLSI M27-A3 and M27-S4 guidelines...
May 16, 2018: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/29783771/adhesins-in-candida-glabrata
#5
REVIEW
Bea Timmermans, Alejandro De Las Peñas, Irene Castaño, Patrick Van Dijck
The human fungal pathogen Candida glabrata is causing more and more problems in hospitals, as this species shows an intrinsic antifungal drug resistance or rapidly becomes resistant when challenged with antifungals. C. glabrata only grows in the yeast form, so it is lacking a yeast-to-hyphae switch, which is one of the main virulence factors of C. albicans . An important virulence factor of C. glabrata is its capacity to strongly adhere to many different substrates. To achieve this, C. glabrata expresses a large number of adhesin-encoding genes and genome comparisons with closely related species, including the non-pathogenic S...
May 20, 2018: Journal of Fungi (Basel, Switzerland)
https://www.readbyqxmd.com/read/29767615/relevance-of-antifungal-penetration-in-biofilm-associated-resistance-of-candida-albicans-and-non-albicans-candida-species
#6
Rachna Singh, Anjna Kumari, Karminder Kaur, Parul Sethi, Arunaloke Chakrabarti
The role of penetration limitation in Candida biofilm-associated antifungal resistance remains unclear. Most of the previous work has been done on Candida albicans, although non-albicans (NAC) species are also implicated in invasive candidiasis and the biofilm matrix has been shown to vary amongst different species. Only a few studies have evaluated clinical isolates. This study aimed to determine the relevance of penetration limitation in the antifungal resistance of biofilms formed by C. albicans and NAC clinical isolates, using an agar disk diffusion assay...
May 16, 2018: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/29766800/antifungal-activity-gas-chromatographic-mass-spectrometric-analysis-and-in-silico-study-of-punica-granatum-peel-extracts-against-fluconazole-resistant-strains-of-candida-species
#7
Sony Paul, M Kalyani, I Kannan
AIMS: Candida species is the common cause of opportunistic fungal infections all over the world with increased mortality and morbidity especially in immunosuppressed patients. Fluconazole is the first line therapy for candidiasis. The antifungal resistance pattern in high-risk patients is a major concern. The present study was aimed to assess the anticandidal activity of Punica granatum peel against fluconazole resistant Candida species isolated from HIV patients. MATERIALS & METHODS: Ethanol, chloroform, petroleum ether and aqueous extracts of the peel of P...
May 14, 2018: Current Pharmaceutical Biotechnology
https://www.readbyqxmd.com/read/29762860/new-pathogens-new-tricks-emerging-drug-resistant-fungal-pathogens-and-future-prospects-for-antifungal-therapeutics
#8
REVIEW
Jennifer Geddes-McAlister, Rebecca S Shapiro
Fungal pathogens are a growing threat to public health. As human immunodeficiency becomes increasingly common, fungal infections are becoming more prevalent. The use of antifungal agents for prophylaxis and treatment of fungal infections has favored the emergence of previously rare or unidentified species of drug-resistant fungal pathogens, including several Candida and Cryptococcus species, as well as mold pathogens. As these new and increasingly drug-resistant fungal pathogens continue to emerge, novel strategies for rapid identification and treatment are necessary to combat these life-threatening infections...
May 15, 2018: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/29762783/repurposing-the-anthelminthic-salicylanilide-oxyclozanide-against-susceptible-and-clinical-resistant-candida-albicans-strains
#9
Emilie Pic, Anaïs Burgain, Adnane Sellam
Current antifungal drugs suffer from limitations including toxicity, adverse interactions with other commonly prescribed drugs, and the emergence of resistant strains. Here, we repurposed the anthelmintic oxyclozanide as a potent antifungal agent against both sensitive and resistant clinical isolates of Candida albicans, as well as other human opportunistic fungi. Antifungal activity of oxyclozanide was enhanced when C. albicans grew in nonfermentable carbon sources. Our data support a mechanism of action where oxyclozanide uncoupled the mitochondrial electron transport from oxidative phosphorylation and perturbed the mitochondrial membrane potential...
May 14, 2018: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/29760684/bioprospecting-deep-sea-actinobacteria-for-novel-anti-infective-natural-products
#10
Dongbo Xu, Linna Han, Chunhui Li, Qi Cao, Duolong Zhu, Nolan H Barrett, Dedra Harmody, Jing Chen, Haining Zhu, Peter J McCarthy, Xingmin Sun, Guojun Wang
The global prevalence of drug resistance has created an urgent need for the discovery of novel anti-infective drugs. The major source of antibiotics in current clinical practice is terrestrial actinobacteria; the less-exploited deep-sea actinobacteria may serve as an unprecedented source of novel natural products. In this study, we evaluated 50 actinobacteria strains derived from diverse deep water sponges and environmental niches for their anti-microbial activities against a panel of pathogens including Candida albicans , Clostridium difficile , Staphylococcus aureus , and methicillin-resistant S...
2018: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29760550/synergistic-antifungal-effect-of-chitosan-stabilized-selenium-nanoparticles-synthesized-by-pulsed-laser-ablation-in-liquids-against-candida-albicans-biofilms
#11
Humberto H Lara, Gregory Guisbiers, Jonathan Mendoza, Lawrence C Mimun, Brandy A Vincent, Jose L Lopez-Ribot, Kelly L Nash
Background: Candida albicans is a major opportunistic fungal pathogen. One of the most important virulence factors that contribute to the pathogenesis of candidiasis is its ability to form biofilms. A key characteristic of Candida biofilms is their resistance to antifungal agents. Due to significant morbidity and mortality rates related to biofilm-associated drug resistance, there is an urgency to develop novel nanotechnology-based approaches preventing biofilm-related infections. Methods: In this study, we report, for the first time, the synthesis of selenium nanoparticles by irradiating selenium pellets by nanosecond pulsed laser ablation in liquid chitosan as a capping agent...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29760548/silver-nanoparticles-induced-alterations-in-multiple-cellular-targets-which-are-critical-for-drug-susceptibilities-and-pathogenicity-in-fungal-pathogen-candida-albicans
#12
Venkatraman Srinivasan Radhakrishnan, Mohana Krishna Reddy Mudiam, Manish Kumar, Surya Prakash Dwivedi, Surinder Pal Singh, Tulika Prasad
Purpose: A significant increase in the incidence of fungal infections and drug resistance has been observed in the past decades due to limited availability of broad-spectrum antifungal drugs. Nanomedicines have shown significant antimicrobial potential against various drug-resistant microbes. Silver nanoparticles (AgNps) are known for their antimicrobial properties and lower host toxicity; however, for clinical applications, evaluation of their impact at cellular and molecular levels is essential...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29755472/the-elusive-anti-candida-vaccine-lessons-from-the-past-and-opportunities-for-the-future
#13
REVIEW
Gloria Hoi Wan Tso, Jose Antonio Reales-Calderon, Norman Pavelka
Candidemia is a bloodstream fungal infection caused by Candida species and is most commonly observed in hospitalized patients. Even with proper antifungal drug treatment, mortality rates remain high at 40-50%. Therefore, prophylactic or preemptive antifungal medications are currently recommended in order to prevent infections in high-risk patients. Moreover, the majority of women experience at least one episode of vulvovaginal candidiasis (VVC) throughout their lifetime and many of them suffer from recurrent VVC (RVVC) with frequent relapses for the rest of their lives...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29755350/extracts-from-hypericum-hircinum-subsp-majus-exert-antifungal-activity-against-a-panel-of-sensitive-and-drug-resistant-clinical-strains
#14
Noemi Tocci, Daniele Perenzoni, Duilio Iamonico, Francesca Fava, Tobias Weil, Fulvio Mattivi
During the last two decades incidences of fungal infections dramatically increased and the often accompanying failure of available antifungal therapies represents a substantial clinical problem. The urgent need for novel antimycotics called particular attention to the study of natural products. The genus Hypericum includes many species that are used in the traditional medicine to treat pathological states like inflammations and infections caused by fungi. However, despite the diffused use of Hypericum -based products the antifungal potential of the genus is still poorly investigated...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29749387/invasive-candidiasis
#15
REVIEW
Peter G Pappas, Michail S Lionakis, Maiken Cavling Arendrup, Luis Ostrosky-Zeichner, Bart Jan Kullberg
Invasive candidiasis is an important health-care-associated fungal infection that can be caused by several Candida spp.; the most common species is Candida albicans, but the prevalence of these organisms varies considerably depending on geographical location. The spectrum of disease of invasive candidiasis ranges from minimally symptomatic candidaemia to fulminant sepsis with an associated mortality exceeding 70%. Candida spp. are common commensal organisms in the skin and gut microbiota, and disruptions in the cutaneous and gastrointestinal barriers (for example, owing to gastrointestinal perforation) promote invasive disease...
May 11, 2018: Nature Reviews. Disease Primers
https://www.readbyqxmd.com/read/29746162/antifungal-activity-of-essential-oils-against-azole-resistant-and-azole-susceptible-i-i-candida-glabrata-i-i-strains-vaginal-isolates
#16
Nadia Massa, Simone Cantamessa, Giorgia Novello, Elia Ranzato, Simona Martinotti, Matteo Pavan, Andrea Rocchetti, Graziella Berta, Elisa Gamalero, Elisa Bona
<i></i>Candida glabrata<i></i> is an opportunistic pathogen, associated with endocarditis, meningitis and disseminated disease and also with complicated vaginitis. Essential oils derived from aromatic plants are known in traditional medicine as antimicrobial agents and have antifungal properties. The aim of this work was to evaluate whether the twelve tested essential oils (tea tree, laurel, anise, basil, bergamot, lavender, mint, oregano, grapefruit, rosemary, winter savory and ginger) could have a transverse effect on <i></i>C...
May 10, 2018: Canadian Journal of Microbiology
https://www.readbyqxmd.com/read/29741145/tandem-mass-spectrometric-cell-wall-proteome-profiling-of-a-candida-albicans-hwp2-mutant-strain
#17
Andy Awad, Pamela El Khoury, Brigitte Wex, Roy A Khalaf
BACKGROUND: Candida albicans is present as part of the normal gut flora and detected in the oral cavities and GI tracts of around fifty percent of adults. Benign colonization can turn pathogenic causing a variety of mild to severe infections. In a pathogen, the cell wall and cell surface proteins are major antigenic determinants and drug targets as they are the primary structures that contact the host. Cell surface proteins perform a variety of functions necessary for virulence such as adhesion, host degradation, resistance to oxidative stress, and drug resistance...
May 9, 2018: Current Molecular Pharmacology
https://www.readbyqxmd.com/read/29740519/repurposing-drugs-to-fast-track-therapeutic-agents-for-the-treatment-of-cryptococcosis
#18
Megan Truong, Leigh G Monahan, Dee A Carter, Ian G Charles
Many infectious diseases disproportionately affect people in the developing world. Cryptococcal meningitis is one of the most common mycoses in HIV-AIDS patients, with the highest burden of disease in sub-Saharan Africa. Current best treatment regimens still result in unacceptably high mortality rates, and more effective antifungal agents are needed urgently. Drug development is hampered by the difficulty of developing effective antifungal agents that are not also toxic to human cells, and by a reluctance among pharmaceutical companies to invest in drugs that cannot guarantee a high financial return...
2018: PeerJ
https://www.readbyqxmd.com/read/29739943/designer-cells-programming-quorum-sensing-interference-with-microbes
#19
Ferdinand Sedlmayer, Dennis Hell, Marius Müller, David Ausländer, Martin Fussenegger
Quorum sensing is a promising target for next-generation anti-infectives designed to address evolving bacterial drug resistance. The autoinducer-2 (AI-2) is a key quorum-sensing signal molecule which regulates bacterial group behaviors and is recognized by many Gram-negative and Gram-positive bacteria. Here we report a synthetic mammalian cell-based microbial-control device that detects microbial chemotactic formyl peptides through a formyl peptide sensor (FPS) and responds by releasing AI-2. The microbial-control device was designed by rewiring an artificial receptor-based signaling cascade to a modular biosynthetic AI-2 production platform...
May 8, 2018: Nature Communications
https://www.readbyqxmd.com/read/29739588/chemical-composition-antifungal-activity-and-potential-anti-virulence-evaluation-of-the-eugenia-uniflora-essential-oil-against-candida-spp
#20
Joycy Francely Sampaio Dos Santos, Janaína Esmeraldo Rocha, Camila Fonseca Bezerra, Maria Karollyna do Nascimento Silva, Yedda Maria Lobo Soares de Matos, Thiago Sampaio de Freitas, Antonia Thassya Lucas Dos Santos, Rafael Pereira da Cruz, Antonio Júdson Targino Machado, Tigressa Helena Soares Rodrigues, Edy Sousa de Brito, Dédora Lima Sales, Waltécio de Oliveira Almeida, José Galberto Martins da Costa, Henrique Douglas Melo Coutinho, Maria Flaviana Bezerra Morais-Braga
The development of fungal resistance to antifungal drugs has been worsening over the years and as a result research on new antifungal agents derived from plants has intensified. Eugenia uniflora L. (pitanga) has been studied for its various biological actions. In this study the chemical composition and antifungal effects of the E. uniflora essential oil (EULEO) were investigated against Candida albicans (CA), Candida krusei (CK) and Candida tropicalis (CT) standard strains. The essential oil obtained through hydro-distillation was analyzed by gas chromatography coupled to mass spectrometry (GC-MS)...
September 30, 2018: Food Chemistry
keyword
keyword
13607
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"