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Antifungal resistance in Candida spp.

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https://www.readbyqxmd.com/read/28515716/antifungal-activity-of-the-biphosphinic-cyclopalladate-c7a-against-candida-albicans-yeast-forms-in-vitro-and-in-vivo
#1
Julian E Muñoz, Diego C P Rossi, Kelly Ishida, Cristina C Spadari, Marcia S C Melhem, Daniel M Garcia, Antonio C F Caires, Carlos P Taborda, Elaine G Rodrigues
Vulvovaginal and invasive candidiasis are frequent conditions in immunosuppressed individuals caused by Candida albicans and non-albicans Candida spp. Fluconazole and Amphotericin B are the main drugs used to fight the infection. However, resistance to fluconazole and other azole antifungal drugs is an important clinical problem that encourages the search for new therapeutic alternatives. In this work, we evaluate the antifungal activity of the biphosphinic cyclopalladate C7a in the in vitro and in vivo model...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28511380/fungal-profile-of-vulvovaginal-candidiasis-in-a-tertiary-care-hospital
#2
Krishnapriya Kalaiarasan, Rakesh Singh, Latha Chaturvedula
INTRODUCTION: Vulvovaginal Candidiasis (VVC) is a common medical health problem of adult women. It is most commonly caused by Candida albicans. But there is a change in fungal profile. Sabouraud's Dextrose Agar (SDA) is the most common culture medium used where mixed fungal infection may be missed. It can be detected easily by using chromogenic culture medium. AIM: To know the fungal profile of vulvovaginal candidiasis using Candida CHROMagar and antifungal susceptibility pattern in patients attending tertiary care hospital...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28507352/candidiasis-prevalence-and-resistance-profiling-in-a-tertiary-care-hospital-of-pakistan
#3
Bushra Jamil, Mohammad Tauseef Mukhtar Bokhari, Azhar Saeed, Mohammad Zahid Mukhtar Bokhari, Zakir Hussain, Tayyaba Khalid, Habib Bokhari, Mohammad Imran, Shahid Ahmad Abbasi
OBJECTIVE: To determine Candida colonisation/infection in renal transplant patients and to determine the resistance pattern against antifungal drugs. METHODS: This prospective, observational study was conducted at Al-Sayyed Hospital, Rawalpindi, Pakistan, from January to October 2014, in collaboration with the Microbiology and Public Health Laboratory's, Islamabad campus..The clinical specimens investigated included respiratory tract secretions, blood, urine, high vaginal swab, skin scrapings, and plastic devices samples...
May 2017: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/28506251/diversity-in-vitro-virulence-traits-and-antifungal-susceptibility-pattern-of-gastrointestinal-yeast-flora-of-healthy-poultry-gallus-gallus-domesticus
#4
Supram Hosuru Subramanya, Nawal Kishor Sharan, Bharat Prasad Baral, Deependra Hamal, Niranjan Nayak, Peralam Yegneswaran Prakash, Brijesh Sathian, Indira Bairy, Shishir Gokhale
BACKGROUND: Poultry farming and consumption of poultry (Gallus gallus domesticus) meat and eggs are common gastronomical practices worldwide. Till now, a detailed understanding about the gut colonisation of Gallus gallus domesticus by yeasts and their virulence properties and drug resistance patterns in available literature remain sparse. This study was undertaken to explore this prevalent issue. RESULTS: A total of 103 specimens of fresh droppings of broiler chickens (commercial G domesticus) and domesticated chickens (domesticated G domesticus) were collected from the breeding sites...
May 15, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28457835/in-vitro-activity-of-a-novel-compound-mul-1867-against-clinically-significant-fungi-candida-spp-and-aspergillus-spp
#5
George Tetz, Michael Cynamon, Gregory Hendricks, Daria Vikina, Victor Tetz
There is an urgent need for new antifungal compounds to treat various types of fungal infections, including pulmonary infections. This study was designed to investigate the potency of a novel compound (Mul-1867) against Candida spp. and Aspergillus spp. isolated from patients with fungal pneumonia, cystic fibrosis and chronic obstructive pulmonary disease. Mul-1867 was highly effective against susceptible control strains as well as resistant clinical isolates, with minimum fungicidal concentrations (MFCs) varying from 0...
April 27, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28430797/effect-of-quinoline-based-1-2-3-triazole-and-its-structural-analogues-on-growth-and-virulence-attributes-of-candida-albicans
#6
Mohammad Irfan, Shadab Alam, Nikhat Manzoor, Mohammad Abid
Candida albicans, along with some other non-albicans Candida species, is a group of yeast, which causes serious infections in humans that can be both systemic and superficial. Despite the fact that extensive efforts have been put into the discovery of novel antifungal agents, the frequency of these fungal infections has increased drastically worldwide. In our quest for the discovery of novel antifungal compounds, we had previously synthesized and screened quinoline containing 1,2,3-triazole (3a) as a potent Candida spp inhibitor...
2017: PloS One
https://www.readbyqxmd.com/read/28419092/a-multi-centric-study-of-candida-bloodstream-infection-in-lima-callao-peru-species-distribution-antifungal-resistance-and-clinical-outcomes
#7
MULTICENTER STUDY
Lourdes Rodriguez, Beatriz Bustamante, Luz Huaroto, Cecilia Agurto, Ricardo Illescas, Rafael Ramirez, Alberto Diaz, Jose Hidalgo
BACKGROUND: The incidence of candidemia is increasing in developing countries. Very little is known about the epidemiology of candidemia in Peru. The aim of this study is to describe the incidence, microbiology, clinical presentation and outcomes of Candida bloodstream infections in three Lima-Callao hospitals. METHODS: Candida spp. isolates were identified prospectively at participant hospitals between November 2013 and January 2015. Susceptibility testing for amphotericin B, fluconazole, posaconazole, voriconazole and anidulafungin was performed using broth microdilution method...
2017: PloS One
https://www.readbyqxmd.com/read/28411060/in%C3%A2-vitro-anti-candida-activity-of-selective-serotonin-reuptake-inhibitors-against-fluconazole-resistant-strains-and-their-activity-against-biofilm-forming-isolates
#8
Rose Anny Costa Silva, Cecília Rocha da Silva, João Batista de Andrade Neto, Anderson Ramos da Silva, Rosana Sousa Campos, Letícia Serpa Sampaio, Francisca Bruna Stefany Aires do Nascimento, Brenda da Silva Gaspar, Said Gonçalves da Cruz Fonseca, Maria Aparecida Alexandre Josino, Thalles Barbosa Grangeiro, Danielle Macedo Gaspar, David Freitas de Lucena, Manoel Odorico de Moraes, Bruno Coêlho Cavalcanti, Hélio Vitoriano Nobre Júnior
Recent research has shown broad antifungal activity of the classic antidepressants selective serotonin reuptake inhibitors (SSRIs). This fact, combined with the increased cross-resistance frequency of the genre Candida regarding the main treatment today, fluconazole, requires the development of novel therapeutic strategies. In that context, this study aimed to assess the antifungal potential of fluoxetine, sertraline, and paroxetine against fluconazole-resistant Candida spp. planktonic cells, as well as to assess the mechanism of action and the viability of biofilms treated with fluoxetine...
April 12, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28381607/antifungal-susceptibility-testing-of-malassezia-spp-with-an-optimized-colorimetric-broth-microdilution-method
#9
Cheryl Leong, Antonino Buttafuoco, Martin Glatz, Philipp P Bosshard
Malassezia is a genus of lipid dependent yeasts. It is associated with common skin diseases such as pityriasis versicolor or atopic dermatitis and can cause systemic infections in immunocompromised individuals. Owing to slow growth and lipid requirements of these fastidious yeasts, convenient and reliable antifungal drug susceptibility testing assays for Malassezia spp. are not widely available. We have therefore optimized a broth microdilution assay for the testing of Malassezia that is based on the assays from CLSI and EUCAST for Candida and other yeasts...
April 5, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28364558/changing-epidemiology-of-candidaemia-in-australia
#10
Belinda Chapman, Monica Slavin, Debbie Marriott, Catriona Halliday, Sarah Kidd, Ian Arthur, Narin Bak, Christopher H Heath, Karina Kennedy, C Orla Morrissey, Tania C Sorrell, Sebastian van Hal, Caitlin Keighley, Emma Goeman, Neil Underwood, Krispin Hajkowicz, Ann Hofmeyr, Michael Leung, Nenad Macesic, Jeannie Botes, Christopher Blyth, Louise Cooley, C Robert George, Pankaja Kalukottege, Alison Kesson, Brendan McMullan, Robert Baird, Jennifer Robson, Tony M Korman, Stella Pendle, Kerry Weeks, Eunice Liu, Elaine Cheong, Sharon Chen
Objectives: Knowledge of contemporary epidemiology of candidaemia is essential. We aimed to identify changes since 2004 in incidence, species epidemiology and antifungal susceptibilities of Candida spp. causing candidaemia in Australia. Methods: These data were collected from nationwide active laboratory-based surveillance for candidaemia over 1 year (within 2014-2015). Isolate identification was by MALDI-TOF MS supplemented by DNA sequencing. Antifungal susceptibility testing was performed using Sensititre YeastOne™...
April 1, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28303122/antifungal-drug-susceptibility-of-candida-species-isolated-from-hiv-positive-patients-recruited-at-a-public-hospital-in-s%C3%A3-o-lu%C3%A3-s-maranh%C3%A3-o-brazil
#11
Ana L G Terças, Sirlei G Marques, Eduardo B Moffa, Márcia B Alves, Conceição M P S de Azevedo, Walter L Siqueira, Cristina A Monteiro
Oropharyngeal candidiasis is the most common fungal infection in hospitalized patients with acquired immune deficiency syndrome (AIDS). Its progression results in invasive infections, which are a significant cause of morbidity and mortality. This study aimed to quickly and accurately identify Candida spp. from oral mucosa of AIDS patients recruited at Presidente Vargas Hospital, in São Luís city, Brazil and to evaluate the sensitivity profile of these fungi to antifungals by using an automated system. Isolates were collected from oropharyngeal mucosa of 52 hospitalized AIDS patients, under anti-viral and antifungal therapies...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28238268/aryl-alkyl-lysines-membrane-active-fungicides-that-act-against-biofilms-of-candida-albicans
#12
Chandradhish Ghosh, Vikas Yadav, Waleed Younis, Haroon Mohammad, Youssef A Hegazy, Mohamed N Seleem, Kaustuv Sanyal, Jayanta Haldar
Mortality due to pathogenic fungi has been exacerbated by the rapid development of resistance to frontline antifungal drugs. Fungicidal compounds with novel mechanisms of action are urgently needed. Aryl-alkyl-lysines, which are membrane-active small molecules, were earlier shown to be broad-spectrum antibacterial agents with potency in vitro and in vivo. Herein, we report the antifungal properties of aryl-alkyl-lysines. After identifying the most active compound (NCK-10), we tested its activity against a panel of clinically relevant pathogenic fungi and examined NCK-10's effect against immature and mature biofilms of Candida albicans...
March 14, 2017: ACS Infectious Diseases
https://www.readbyqxmd.com/read/28195093/molecular-identification-of-candida-species-isolated-from-cases-of-neonatal-candidemia-using-polymerase-chain-reaction-restriction-fragment-length-polymorphism-in-a-tertiary-care-hospital
#13
COMPARATIVE STUDY
Akeela Fatima, Gulnaz Bashir, Tehmeena Wani, Abiroo Jan, Amrish Kohli, Mosin S Khan
CONTEXT: Candida spp. is an emerging cause of bloodstream infections worldwide. Delay in speciation of Candida isolates by conventional methods and resistance to antifungal drugs in various Candida species are responsible for the increase in morbidity and mortality due to candidemia. Hence, the rapid identification of Candida isolates is very important for the proper management of patients with candidemia. AIMS: The aim was to re-evaluate the identification of various Candida spp...
January 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/28149146/antifungal-susceptibility-and-risk-factors-in-patients-with-candidemia
#14
Cigdem Mermutluoglu, Ozcan Deveci, Saim Dayan, Emel Aslan, Fatma Bozkurt, Recep Tekin
OBJECTIVE: This study aimed to investigate the antifungal susceptibility, typology, and risk factors of candidemia among adult and pediatric inpatients at a university hospital. MATERIALS AND METHODS: A case-control study was designed, and data collected between December 2013 and December 2014 were retrospectively evaluated. The case group consisted of patients with candidemia. The control group was selected from the inpatients that did not develop candidemia but were admitted in the same clinic and during the same period as the candidemia group...
October 2016: Eurasian Journal of Medicine
https://www.readbyqxmd.com/read/28138369/distribution-and-drug-susceptibility-of-candida-spp-associated-with-female-genital-tract-infection-chongqing-china
#15
Xiaodong Luo, Xiaojing Dong, Zhi Pen
BACKGROUND: Vulvovaginal candidiasis is defined as vulvovaginitis associated with vaginal carriage of Candida spp. and is a common problem with a high rate of morbidity. OBJECTIVES: To investigate the distribution of Candida spp. and evaluate the corresponding antifungal susceptibility in women with genital tract infection in Chongqing, southwestern China. PATIENTS AND METHODS: Samples (n = 2.129) were obtained from female patients with symptoms of genital tract infection...
October 2016: Jundishapur Journal of Microbiology
https://www.readbyqxmd.com/read/28094180/antifungal-activity-of-substituted-aurones
#16
Caleb L Sutton, Zachary E Taylor, Mary B Farone, Scott T Handy
Novel antifungals are in high demand as there is a growing resistance to antifungals currently in use. In particular, opportunistic fungal infections caused by Candida spp. are on the rise with infections by this genus accounting for the most severe fungal infections following chemotherapy, implantation procedures, and in patients with HIV/AIDS. A series of simple aurone analogs were synthesized and screened for antifungal activity versus Candida spp. Several compounds displayed activity at 100μM, with two having IC50 values below 20μM for three species of Candida...
January 6, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28052349/chemical-composition-and-antifungal-activity-of-carica-papaya-linn-seed-essential-oil-against-candida-spp
#17
X He, Y Ma, G Yi, J Wu, L Zhou, H Guo
In recent years, the incidence of clinical yeast infections has increased dramatically. Due to the extensive use of broad-spectrum antifungal agents, there has been a notable increase in drug resistance among infections yeast species. As one of the most popular natural antimicrobial agents, essential oils (EOs) have attracted a lot of attention from the scientific community. The aim of this study was to analyse the chemical composition and examine the antifungal activity of the EO extracted from the seeds of Carica papaya Linn...
January 4, 2017: Letters in Applied Microbiology
https://www.readbyqxmd.com/read/28040409/antifungal-effects-of-phytocompounds-on-candida-species-alone-and-in-combination-with-fluconazole
#18
REVIEW
Mengjiao Lu, Tao Li, Jianjian Wan, Xiuyun Li, Lei Yuan, Shujuan Sun
Invasive fungal infections caused by Candida spp. remain the most predominant nosocomial fungal infections. Owing to the increased use of antifungal agents, resistance of Candida spp. to antimycotics has emerged frequently, especially to fluconazole (FLC). To cope with this issue, new efforts have been dedicated to discovering novel antimycotics or new agents that can enhance the susceptibility of Candida spp. to existing antimycotics. The secondary metabolites of plants represent a large library of compounds that are important sources for new drugs or compounds suitable for further modification...
February 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28029734/investigation-of-the-first-seven-reported-cases-of-candida-auris-a-globally-emerging-invasive-multidrug-resistant-fungus-united-states-may-2013-august-2016
#19
EDITORIAL
S Vallabhaneni, A Kallen, S Tsay, N Chow, R Welsh, J Kerins, S K Kemble, M Pacilli, S R Black, E Landon, J Ridgway, T N Palmore, A Zelzany, E H Adams, M Quinn, S Chaturvedi, J Greenko, R Fernandez, K Southwick, E Y Furuya, D P Calfee, C Hamula, G Patel, P Barrett, P Lafaro, E L Berkow, H Moulton-Meissner, J Noble-Wang, R P Fagan, B R Jackson, S R Lockhart, A P Litvintseva, T M Chiller
November 11, 2016/65(44);1234-1237. What is already known about this topic? Candida auris is an emerging pathogenic fungus that has been reported from at least a dozen countries on four continents during 2009-2015. The organism is difficult to identify using traditional biochemical methods, some isolates have been found to be resistant to all three major classes of antifungal medications, and C. auris has caused health care-associated outbreaks. What is added by this report? This is the first description of C...
January 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/27998758/the-synthesis-and-antifungal-activity-of-20s-3%C3%AE-acetoxy-5%C3%AE-pregnane-20-16%C3%AE-carbolactone-against-fluconazole-resistant-candida-cells
#20
Izabella Jastrzebska, Katarzyna Niemirowicz, Wioleta I Brzozowska, Robert Bucki
An efficient procedure for the synthesis of (20S)-3β-acetoxy-5α-pregnane-20,16β-carbolactone is described. Bactericidal and fungicidal activity of the lactone against different bacteria such as MSSA, MRSA, E. coli ESBL, P. aeruginosa and clinical isolates of Candida spp., in planktonic and biofilm growth stage were assessed. Additionally, the affinity of this new compound to microbial plasma membrane and hemoglobin release from human red blood cells were determined using fluorometric and colorimetric assay, respectively...
December 18, 2016: Steroids
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