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https://www.readbyqxmd.com/read/27909876/sonochemical-effect-on-activity-and-conformation-of-commercial-lipases
#1
Shamraja S Nadar, Virendra K Rathod
The enzyme under lower-intensity ultrasonic irradiation leads to favourable conformational changes, thereby enhancing its activity. The augmentation of activity of ultrasound-treated enzyme is strongly dependent on ultrasound intensity, duty cycle and exposure time, which was investigated for commercial lipases. Thermomyces lanuginosus (TL) lipase showed a 1.3-fold enhanced activity after irradiating at 22 kHz and 11.38 W cm(-2) with 50 % duty cycle for 25-min ultrasonic treatment and 1.5-fold enhanced activity was observed for lipozyme (candida antarctica lipase B (CALB)) lipase, at 22 kHz and 15...
December 1, 2016: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/27909682/case-report-of-invasive-disseminated-candidiasis-with-peripheral-nodular-cavitary-lesions-in-the-lung
#2
Hafiza Arshad, Silvia Garcia, Misbahuddin Khaja
We report a case of invasive candidiasis presenting as multiple lung nodules and cavitary lesions with minimal pleural effusion. Candida infections of the lung are rare but can occur after hematologic dissemination of the yeast from other body sites, such as the skin and the gastrointestinal and genitourinary tracts. Here, we describe the case of a 56-year-old female with a history of end-stage renal disease (ESRD) who presented with fever, productive cough, and pulmonary nodules and cavitary lesions seen on a chest computed tomography (CT)...
2017: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/27907120/structural-and-functional-elucidation-of-yeast-lanosterol-14%C3%AE-demethylase-in-complex-with-agrochemical-antifungals
#3
Joel D A Tyndall, Manya Sabherwal, Alia A Sagatova, Mikhail V Keniya, Jacopo Negroni, Rajni K Wilson, Matthew A Woods, Klaus Tietjen, Brian C Monk
Azole antifungals, known as demethylase inhibitors (DMIs), target sterol 14α-demethylase (CYP51) in the ergosterol biosynthetic pathway of fungal pathogens of both plants and humans. DMIs remain the treatment of choice in crop protection against a wide range of fungal phytopathogens that have the potential to reduce crop yields and threaten food security. We used a yeast membrane protein expression system to overexpress recombinant hexahistidine-tagged S. cerevisiae lanosterol 14α-demethylase and the Y140F or Y140H mutants of this enzyme as surrogates in order characterize interactions with DMIs...
2016: PloS One
https://www.readbyqxmd.com/read/27906678/humoral-immune-responses-toward-tumor-derived-antigens-in-previously-untreated-patients-with-chronic-lymphocytic-leukemia
#4
Valentina Griggio, Giorgia Mandili, Candida Vitale, Michela Capello, Paolo Macor, Sara Serra, Barbara Castella, Silvia Peola, Myriam Foglietta, Daniela Drandi, Paola Omedé, Daniele Sblattero, Paola Cappello, Roberto Chiarle, Silvia Deaglio, Mario Boccadoro, Francesco Novelli, Massimo Massaia, Marta Coscia
In chronic lymphocytic leukemia (CLL) the occurrence and the impact of antibody responses toward tumor-derived antigens are largely unexplored. Our serological proteomic data show that antibodies toward 47 identified antigens are detectable in 29 out of 35 patients (83%) with untreated CLL. The glycolytic enzyme alpha-enolase (ENO1) is the most frequently recognized antigen (i.e. 54% of CLL sera). We show that ENO1 is upregulated in the proliferating B-cell fraction of CLL lymph nodes. In CLL cells of the peripheral blood, ENO1 is exclusively expressed at the intracellular level, whereas it is exposed on the surface of apoptotic leukemic cells...
November 30, 2016: Oncotarget
https://www.readbyqxmd.com/read/27906147/biogenic-synthesis-of-silver-nanoparticles-from-cassia-fistula-linn-in-vitro-assessment-of-their-antioxidant-antimicrobial-and-cytotoxic-activities
#5
Yugal Kishore Mohanta, Sujogya Kumar Panda, Kunal Biswas, Abiral Tamang, Jaya Bandyopadhyay, Debashis De, Dambarudhar Mohanta, Akshaya Kumar Bastia
The present study reports on biogenic-synthesised silver nanoparticles (AgNPs) derived by treating Ag ions with an extract of Cassia fistula leaf, a popular Indian medicinal plant found in natural habitation. The progress of biogenic synthesis was monitored time to time using a ultraviolet-visible spectroscopy. The effect of phytochemicals present in C. fistula including flavonoids, tannins, phenolic compounds and alkaloids on the homogeneous growth of AgNPs was investigated by Fourier-transform infrared spectroscopy...
December 2016: IET Nanobiotechnology
https://www.readbyqxmd.com/read/27905002/disseminated-candidiasis-in-a-young-previously-healthy-dog-and-review-of-literature
#6
Nicole Willems, Dirk J Houwers, Yvette M Schlotter, Bart Theelen, Teun Boekhout
BACKGROUND: The reports on disseminated candidiasis in dogs so far describe at least one predisposing factor. This case report, however, highlights candidiasis in a dog without any known predisposition. PATIENT: A 1.5-year-old intact female Hovawart dog was presented with subcutaneous nodules and polyuria/polydipsia. An excisional biopsy revealed a chronic pyogranulomatous and necrotizing inflammation with mycotic structures. The patient became febrile and lethargic, and developed lameness...
November 30, 2016: Mycopathologia
https://www.readbyqxmd.com/read/27904981/candida-guilliermondii-as-a-potential-biocatalyst-for-the-production-of-long-chain-%C3%AE-%C3%AF-dicarboxylic-acids
#7
Nicole Werner, Miriam Dreyer, Wenke Wagner, Nicolas Papon, Steffen Rupp, Susanne Zibek
OBJECTIVES: To explore Candida guilliermondii for the production of long-chain dicarboxylic acids (DCA), we performed metabolic pathway engineering aiming to prevent DCA consumption during β-oxidation, but also to increase its production via the ω-oxidation pathway. RESULTS: We identified the major β- and ω-oxidation pathway genes in C. guilliermondii and performed first steps in the strain improvement. A double pox disruption mutant was created that slowed growth with oleic acid but showed accelerated DCA degradation...
November 30, 2016: Biotechnology Letters
https://www.readbyqxmd.com/read/27904738/recent-developments-in-the-management-of-invasive-fungal-infections-in-patients-with-oncohematological-diseases
#8
REVIEW
Markus Ruhnke, Stefan Schwartz
Patients with hematological cancer have a high risk of invasive fungal diseases (IFDs). These infections are mostly life threatening and an early diagnosis and initiation of appropriate antifungal therapy are essential for the clinical outcome. Most commonly, Aspergillus and Candida species are involved. However, other non-Aspergillus molds are increasingly be identified in cases of documented IFDs. Important risk factors are long lasting granulocytopenia with neutrophil counts below 500/μl for more than 10 days or graft-versus-host disease resulting from allogeneic stem-cell transplantation...
December 2016: Therapeutic Advances in Hematology
https://www.readbyqxmd.com/read/27904401/comparison-of-cultivable-acetic-acid-bacterial-microbiota-in-organic-and-conventional-apple-cider-vinegar
#9
Aleksandra Štornik, Barbara Skok, Janja Trček
Organic apple cider vinegar is produced from apples that go through very restricted treatment in orchard. During the first stage of the process, the sugars from apples are fermented by yeasts to cider. The produced ethanol is used as a substrate by acetic acid bacteria in a second separated bioprocess. In both, the organic and conventional apple cider vinegars the ethanol oxidation to acetic acid is initiated by native microbiota that survived alcohol fermentation. We compared the cultivable acetic acid bacterial microbiota in the production of organic and conventional apple cider vinegars from a smoothly running oxidation cycle of a submerged industrial process...
March 2016: Food Technology and Biotechnology
https://www.readbyqxmd.com/read/27904074/prophylactic-effect-of-lactobacillus-pentosus-strain-s-pt84-on-candida-infection-and-gastric-inflammation-in-a-murine-gastrointestinal-candidiasis-model-errata
#10
Toshihiro Maekawa, A Sanae Ishijima, Masayuki Ida, Takayuki Izumo, Yoshiko Ono, Hiroshi Shibata, Shigeru Abe
We previously showed a prophylactic effect of Lactobacillus pentosus strain S-PT84 against oral candidiasis in mice. In the present study, we evaluated the protective effect of S-PT84 against Candida infection of the gastrointestinal tract. As the first step, we used an in vitro assay to compare the inhibitory effects of several lactobacilli (S-PT84 and Lactobacillus pentosus type strain JCM1558(T), Lactobacillus gasseri type strain JCM1131(T) and Lactobacillus casei type strain JCM1134(T)) on mycelial growth of Candida albicans...
2016: Medical Mycology Journal
https://www.readbyqxmd.com/read/27904062/promising-therapies-for-fungal-infection-based-on-the-study-to-elucidate-mechanisms-to-cope-with-stress-in-candida-species
#11
Kazuyuki Hirai, Tatsuya Inukai, Hironobu Nakayama
In recent years, the incidence of fungal infections has been increasing, particularly among patients with immune systems compromised by human immunodeficiency virus infection, organ transplantation, and/or chemotherapy for cancer. Current therapies for treating systemic fungal infection have limited effectiveness and have created problems of adverse reactions and drug resistance. These issues therefore motivate us to develop novel antifungals. Elucidation of stress response mechanisms and virulence factors in pathogenic fungi is required in developing an effective antifungal strategy...
2016: Medical Mycology Journal
https://www.readbyqxmd.com/read/27904057/potential-of-ravuconazole-and-its-prodrugs-as-the-new-oraltherapeutics-for-onychomycosis
#12
Hideyo Yamaguchi
Onychomycosis is a fungal infection of the nail apparatus caused by dermatophytes, Candida and non-dermatophytic molds. It is highly prevalent in the general population worldwide and also responsible for significant morbidity and complications and does not usually cure itself. Thus, the condition needs to be treated in view of physical and psychological problems produced. Currently, oral medications using terbinafine are the most effective therapy, but it has relatively limited therapeutic success, particularly for long-term management...
2016: Medical Mycology Journal
https://www.readbyqxmd.com/read/27904056/prophylactic-effect-of-lactobacillus-pentosus-strain-s-pt84-on-candida-infection-and-gastric-inflammation-in-a-murine-gastrointestinal-candidiasis-model
#13
Toshihiro Maekawa, A Sanae Ishijima, Masayuki Ida, Takayuki Izumo, Yoshiko Ono, Hiroshi Shibata, Shigeru Abe
We previously showed a prophylactic effect of Lactobacillus pentosus strain S-PT84 against oral candidiasis in mice. In the present study, we evaluated the protective effect of S-PT84 against Candida infection of the gastrointestinal tract. As the first step, we used an in vitro assay to compare the inhibitory effects of several lactobacilli (S-PT84 and Lactobacillus pentosus type strain JCM1558(T), Lactobacillus gasseri type strain JCM1131(T) and Lactobacillus casei type strain JCM1134(T)) on mycelial growth of Candida albicans...
2016: Medical Mycology Journal
https://www.readbyqxmd.com/read/27902776/inhibition-of-candida-albicans-biofilm-formation-by-the-synthetic-lactoferricin-derived-peptide-hlf1-11
#14
Paola Morici, Roberta Fais, Cosmeri Rizzato, Arianna Tavanti, Antonella Lupetti
The aim of this study was to evaluate the in vitro activity of the synthetic peptide hLF1-11 against biofilm produced by clinical isolates of Candida albicans with different fluconazole susceptibility. The antibiofilm activity of the peptide hLF1-11 was assessed in terms of reduction of biofilm cellular density, metabolic activity and sessile cell viability. The extent of morphogenesis in hLF1-11 treated and untreated biofilms was also investigated microscopically. Transcription levels of genes related to cell adhesion, hyphal development and extracellular matrix production were analysed by qRT-PCR in hLF1-11 treated and untreated biofilms...
2016: PloS One
https://www.readbyqxmd.com/read/27902647/extracorporeal-membrane-oxygenation-associated-bloodstream-infections-in-children
#15
David F Butler, Brian Lee, Erica Molitor-Kirsch, Jason G Newland
This was a case-control study of extracorporeal membrane oxygenation (ECMO) cases spanning five years. Bloodstream infection (BSI) occurred in 12/207 subjects, with Candida sp.-4, Pseudomonas sp.-2, and Staphylococcal sp.-2 being predominant. No risk factors for BSI were identified. Exposure to broad spectrum antibiotics was common in both BSI and control patients. Prophylactic antimicrobials did not decrease risk for BSI.
November 28, 2016: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/27902418/effects-of-the-glucocorticoid-betamethasone-on-the-interaction-of-candida-albicans-with-human-epithelial-cells
#16
Ágnes Jakab, Selene Mogavero, Toni M Förster, Marina Pekmezovic, Nadja Jablonowski, Viktor Dombrádi, István Pócsi, Bernhard Hube
The glucocorticoid betamethasone (BM) is frequently employed in the clinical practice because of its anti-inflammatory and immunosuppressive properties. In this study, we investigated the effect of BM (1 and 2 mM) on the ability of Candida albicans to adhere to, invade and damage oral, intestinal or vaginal epithelial cells, as well as to elicit cytokine and chemokine release. BM at 2 mM concentration stimulated adherence of C. albicans to vaginal cells and facilitated the invasion of intestinal and vaginal epithelia without influencing the growth rate of invading C...
October 20, 2016: Microbiology
https://www.readbyqxmd.com/read/27902377/comparison-of-susceptibility-patterns-using-commercially-available-susceptibility-testing-methods-performed-on-prevalent-candida-species
#17
David Cretella, Katie E Barber, S Travis King, Kayla R Stover
The rising rates of invasive fungal infections caused by non-albicans Candida and the increasing emergence of antifungal resistance complicate the management of invasive candidiasis. Accurate and timely antifungal susceptibility testing is critical to targeting antifungal therapy. The purpose of this study was to compare commercially available susceptibility testing methods using prospectively collected Candida isolates. Susceptibility testing was performed on 74 Candida isolates collected from July 2014-March 2015 using broth microdilution (BMD) according to the Clinical and Laboratory Standards Institute (CLSI) method, Etest, Vitek2 (YS-05), and Sensititre...
November 1, 2016: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/27902197/three-novel-ascomycetous-yeast-species-of-the-kazachstania-clade-kazachstania-saulgeensis-sp-nov-kazachstania-serrabonitensis-sp-nov-and-kazachstania-australis-sp-nov-reassignement-of-candida-humilis-to-kazachastania-humilis-f-a-comb-nov-and-candida-pseudohumilis
#18
Noémie Jacques, Véronique Sarilar, Charlotte Urien, Mariana R Lopes, Camila G Morais, Ana Paula T Uetanabaro, Colin R Tinsley, Carlos A Rosa, Delphine Sicard, Serge Casaregola
Five ascosporogenous yeast strains related to the genus Kazachstania were isolated. Two strains (CLIB 1764T and CLIB 1780) were isolated from French sourdoughs; three others (UFMG-CM-Y273T, UFMG-CM-Y451 and UFMG-CM-Y452) were from rotting wood in Brazil. The sequences of the French and Brazilian strains differed by one and three substitutions, respectively in the D1/D2 LSU rRNA gene and the ITS. The D1/D2 LSU rRNA sequence of these strains differed by 0.5% and 0.7% from Kazachstania exigua, but their ITS sequences diverged by 8...
October 12, 2016: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/27900840/peptoid-efficacy-against-polymicrobial-biofilms-determined-by-using-propidium-monoazide-modified-quantitative-pcr
#19
Yu Luo, Hannah L Bolt, Gabriela A Eggimann, Danny F McAuley, Ronan McMullan, Tanya Curran, Mei Zhou, Professor Colin A B Jahoda, Steven L Cobb, Fionnuala T Lundy
Biofilms containing Candida albicans are responsible for a wide variety of clinical infections. The protective effects of the biofilm matrix, the low metabolic activity of microorganisms within a biofilm and their high mutation rate, significantly enhance the resistance of biofilms to conventional antimicrobial treatments. Peptoids are peptide-mimics that share many features of host defence antimicrobial peptides but have increased resistance to proteases and therefore have better stability in vivo. The activity of a library of peptoids was tested against monospecies and polymicrobial bacterial/fungal biofilms...
November 7, 2016: Chembiochem: a European Journal of Chemical Biology
https://www.readbyqxmd.com/read/27900513/synthesis-and-antimicrobial-evaluation-of-ester-linked-1-4-disubstituted-1-2-3-triazoles-with-a-furyl-thienyl-moiety
#20
C P Kaushik, Raj Luxmi, Dharmendra Singh, Ashwani Kumar
Twenty ester-linked 1,4-disubstituted 1,2,3-triazoles having a furyl/thienyl moiety have been synthesized from heteroaryl prop-2-yn-1-yl carboxylate and aromatic azides via a Cu(I) catalyzed 1,3-dipolar cycloaddition. All the synthesized compounds were characterized by FTIR, [Formula: see text]H NMR, [Formula: see text]C NMR spectroscopy and HRMS. Synthesized triazoles were tested in vitro for antimicrobial evaluation against Gram-negative bacteria-Escherichia coli, Enterobacter aerogenes and Klebsiella pneumoniae; Gram-positive bacteria-Staphylococcus aureus and two fungal strains-Candida albicans and Aspergillus niger, reflecting moderate to good activity...
November 29, 2016: Molecular Diversity
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