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https://www.readbyqxmd.com/read/29350302/antifungal-mechanism-of-sodium-dehydroacetate-against-geotrichum-citri-aurantii
#1
Xu Tang, Qiuli Ouyang, Guoxing Jing, Xingfeng Shao, Nengguo Tao
This study investigated the potential anti-fungal mechanisms of sodium dehydroacetate (SD) against Geotrichum citri-aurantii. The results showed that the cell wall integrity of G. citri-aurantii was not affected, whereas the membrane permeability of G. citri-aurantii mycelia was visibly altered by SD. Dramatic morphological changes of the mycelia, such as loss of cytoplasm, plasmolysis, and dissolution of intracellular substances, were observed by scanning electron microscopy and transmission electron microscopy analyses, indicating that the mycelium is severely damaged by the SD treatment...
January 19, 2018: World Journal of Microbiology & Biotechnology
https://www.readbyqxmd.com/read/29348081/evaluation-of-antioxidant-and-antimicrobial-activities-of-bergenia-ciliata-sternb-rhizome-crude-extract-and-fractions
#2
Aman Khan, Gul Jan, Afsar Khan, Farzana Gul Jan, Muhammad Danish
Biologically, screening of medicinal plants extracts have been since pre-historic to determine the antioxidants and antimicrobial profile. The present study was aimed to investigate and evaluate crude extract and different fractions of Bergenia ciliata Sternb (rhizome) for bioactivity which is most considerable medicinal plants. The chloroform fraction was found to be highly anti-oxidative with the IC50 value (4.15±0.82) as compare to ethyl acetate and n-hexane fraction. In addition, neither crude extract nor any fraction showed inhibition against fungal strains, i...
January 2018: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29346417/xylose-donor-transport-is-critical-for-fungal-virulence
#3
Lucy X Li, Carsten Rautengarten, Joshua L Heazlewood, Tamara L Doering
Cryptococcus neoformans, an AIDS-defining opportunistic pathogen, is the leading cause of fungal meningitis worldwide and is responsible for hundreds of thousands of deaths annually. Cryptococcal glycans are required for fungal survival in the host and for pathogenesis. Most glycans are made in the secretory pathway, although the activated precursors for their synthesis, nucleotide sugars, are made primarily in the cytosol. Nucleotide sugar transporters are membrane proteins that solve this topological problem, by exchanging nucleotide sugars for the corresponding nucleoside phosphates...
January 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29346329/anti-phytopathogenic-and-cytotoxic-activities-of-crude-extracts-and-secondary-metabolites-of-marine-derived-fungi
#4
Dong-Lin Zhao, Dan Wang, Xue-Ying Tian, Fei Cao, Yi-Qiang Li, Cheng-Sheng Zhang
Thirty-one isolates belonging to eight genera in seven orders were identified from 141 strains that were isolated from several marine plants. Alternaria sp. and Fusarium sp. were found to be the predominant fungi. Evaluation of the anti-phytopathogenic bacterial and fungal activities, as well as the cytotoxicity of these 31 extracts, revealed that most of them displayed different levels of bioactivities. Due to their interesting bioactivities, two fungal strains-Fusarium equiseti (P18) and Alternaria sp. (P8)-were selected for chemical investigation and compounds 1-4 were obtained...
January 18, 2018: Marine Drugs
https://www.readbyqxmd.com/read/29345972/trypsin-inhibitors-from-cajanus-cajan-and-phaseolus-limensis-possess-antioxidant-anti-inflammatory-and-antibacterial-activity
#5
Tooba Naz Shamsi, Romana Parveen, Sumbul Afreen, Mudasser Azam, Priyankar Sen, Yamini Sharma, Qazi Mohd Rizwanul Haque, Tasneem Fatma, Nikhat Manzoor, Sadaf Fatima
Protease inhibitors are one of the most promising and investigated subjects for their role in pharmacognostic and pharmacological studies. This study aimed to investigate antioxidant, anti-inflammatory, and antimicrobial activities of trypsin inhibitors (TIs) from two plant sources (Cajanus cajan and Phaseolus limensis). TI was purified from C. cajan (PUSA-992) by ammonium sulfate precipitation followed by ion exchange chromatography. TI from Phaseolus limensis (lima bean trypsin inhibitor; LBTI) was procured from Sigma-Aldrich, St...
January 18, 2018: Journal of Dietary Supplements
https://www.readbyqxmd.com/read/29341803/licorice-pretreatment-protects-against-brain-damage-induced-by-middle-cerebral-artery-occlusion-in-mice
#6
Chiyeon Lim, Sehyun Lim, Byoungho Lee, Buyeo Kim, Suin Cho
Licorice is extracted from the roots of plants in the Glycyrrhiza genus, especially Glycyrrhiza uralensis in China and Korea. It has several pharmacological activities, including neuro-protective, anti-fungal, and anti-cariogenic effects. Ischemia/reperfusion-induced brain injury is a leading cause of adult disability and death; thus, the identification of anti-apoptotic, neuro-protective therapeutic agents is viewed as an attractive drug development strategy. Infarct volumes and the expression of several apoptosis-related proteins, including Bcl-xL, Bcl-2, caspase-8, and caspase-9, were evaluated by western blotting in the brains of mice subjected to middle cerebral artery occlusion (MCAO)...
January 17, 2018: Journal of Medicinal Food
https://www.readbyqxmd.com/read/29339229/a-rare-case-of-c-glabrata-spondylodiscitis-case-report-and-literature-review
#7
REVIEW
Manfredi Gagliano, Costanza Marchiani, Giulia Bandini, Paolo Bernardi, Nicolas Palagano, Elisa Cioni, Martina Finocchi, Silvia Bellando Randone, Alberto Moggi Pignone
BACKGROUND: Spondylodiscitis are vertebral column infections whose incidence is rising due to an increase of the susceptible population and improved ascertainment. They have been associated with a wide range of microorganisms. Fungal spondylodiscitis is uncommon (0.5%-1.6%) and strongly associated with immunodepression and diabetes (Gouliouris et al., 2010). We present a rare case of Candida glabrata spondylodiscitis in a non neutropenic diabetic patient with the review of the literature...
January 12, 2018: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/29337923/synergistic-antifungal-allelopatic-and-anti-proliferative-potential-of-salvia-officinalis-l-and-thymus-vulgaris-l-essential-oils
#8
Ersilia Alexa, Renata Maria Sumalan, Corina Danciu, Diana Obistioiu, Monica Negrea, Mariana-Atena Poiana, Cristian Rus, Isidora Radulov, Georgeta Pop, Cristina Dehelean
The current study aimed to investigate the chemical composition and the synergistic potential of two essential oils (EOs), as obtained from Salvia officinalis L. (SEO), and Thymus vulgaris L. (TEO). The antifungal potential was tested in vitro against Fusarium graminearum (Fg 06_17), the herbicidal effect was studied using weed seeds of Amaranthus retroflexus (ARET), Chenopodium album (CALB), Echinochloa crus-galli (EGAL), but also wheat seeds (WS) of the Lovrin variety and tomato seeds Saint-Pierre of the variety...
January 16, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29330691/bis-guanylhydrazones-as-efficient-anti-candida-compounds-through-dna-interaction
#9
Jelena Lazić, Vladimir Ajdačić, Sandra Vojnovic, Mario Zlatović, Marina Pekmezovic, Selene Mogavero, Igor Opsenica, Jasmina Nikodinovic-Runic
Candida spp. are leading causes of opportunistic mycoses, including life-threatening hospital-borne infections, and novel antifungals, preferably aiming targets that have not been used before, are constantly needed. Hydrazone- and guanidine-containing molecules have shown a wide range of biological activities, including recently described excellent antifungal properties. In this study, four bis-guanylhydrazone derivatives (BG1-4) were generated following a previously developed synthetic route. Anti-Candida (two C...
January 12, 2018: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29329339/accessibility-and-contribution-to-glucan-masking-of-natural-and-genetically-tagged-versions-of-yeast-wall-protein-1-of-candida-albicans
#10
Bruce L Granger
Yeast wall protein 1 (Ywp1) is an abundant glycoprotein of the cell wall of the yeast form of Candida albicans, the most prevalent fungal pathogen of humans. Antibodies that bind to the polypeptide backbone of isolated Ywp1 show little binding to intact yeast cells, presumably because the Ywp1 epitopes are masked by the polysaccharides of the mannoproteins that form the outer layer of the cell wall. Rare cells do exhibit much greater anti-Ywp1 binding, however, and one of these was isolated and characterized...
2018: PloS One
https://www.readbyqxmd.com/read/29328460/terrein-inhibits-migration-of-human-breast-cancer-cells-via-inhibition-of-the-rho-and-rac-signaling-pathways
#11
Anongnard Kasorn, Fabien Loison, Thaned Kangsamaksin, Suchada Jongrungruangchok, Mathurose Ponglikitmongkol
Breast cancer is the most common cancer in women worldwide. Progression and aggressiveness of breast cancer is usually associated with its migration and invasion abilities. Recently, natural products with potential anticancer activity have become attractive candidates for alternative treatment of cancer. A fungal metabolite, terrein, isolated from the Aspergillus terreus has been revealed to exhibit selective anticancer activity; although this molecule has a variety of biological activities. The inhibitory effect on cell proliferation in hepatoma, keratinocytes, and lung cancer cells was due to cell cycle arrest without induction of apoptosis...
January 4, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29325916/proanthocyanidin-polymeric-tannins-from-stryphnodendron-adstringens-are-effective-against-fluconazole-resistant-candida-spp-and-treat-vaginal-candidiasis
#12
Aline Luiza Duarte de Freitas, Vanessa Kaplum, Diego Conrado Pereira Rossi, Leandro Buffoni Roque da Silva, Márcia de Souza Carvalho Melhem, Carlos Pelleschi Taborda, João Carlos Palazzo de Mello, Celso Vataru Nakamura, Kelly Ishida
ETHNOPHARMACOLOGICAL RELEVANCE: The stem bark of Stryphnodendron adstringens (Mart.) Coville is popularly used as anti-inflammatory, astringent and in the treatment of wounds and vaginal infections. Several pharmacological activities have been scientifically proven by "in vitro" and "in vivo" experimental assays for antibacterial, antiviral, antiprotozoan, anti-inflammatory and antioxidant. AIM OF THE STUDY: We investigated whether proanthocyanidin polymeric tannins from the Stryphnodendron adstringens steam bark with antifungal activity against Candida albicans in vitro are also active against planktonic and biofilm cells of Candida non-albicans (CNA, including fluconazole-resistant isolates) and are capable of controlling Candida vaginitis in vivo...
January 8, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29325755/amphotericin-b-albumin-conjugates-synthesis-toxicity-and-anti-fungal-activity
#13
Sneha Gurudevan, Arul Prakash Francis, A Jayakrishnan
Amphotericin B (AmB), a hydrophobic drug with negligible aqueous solubility was conjugated to bovine serum albumin (BSA) via amide bond coupling to give 6 to 8 wt% drug payload. The resulting conjugate was characterized using SDS-PAGE and UV-visible, FTIR and CD spectroscopy. The conjugate was water-soluble to the extent of 150 mg/ml, was non-toxic to HEK 293 T cells at a concentration of 500 μg/ml (equivalent to ~30 μg AmB) and showed hemolysis of <5% at 200 μg/ml (equivalent to ~12 μg AmB) against human erythrocytes in vitro...
January 8, 2018: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29318458/diagnostic-performance-of-blood-culture-bottles-for-vitreous-culture-compared-to-conventional-microbiological-cultures-in-patients-with-suspected-endophthalmitis
#14
Jan Kehrmann, Valerie Chapot, Jan Buer, Philipp Rating, Norbert Bornfeld, Joerg Steinmann
The purpose of this investigation was to evaluate the performance of blood culture bottles in comparison to conventional microbiological culture techniques in detecting causative microorganisms of endophthalmitis and to determine their anti-infective susceptibility profiles. All consecutive cases with clinically suspected endophthalmitis in a university-based ophthalmology department between January 2009 and December 2016 were analysed in this retrospective comparative case series. Samples from 247 patients with suspected endophthalmitis underwent microbiological diagnostic work-up...
January 9, 2018: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/29318401/synthesis-anti-microbial-activity-cytotoxicity-of-some-novel-substituted-5-3-1h-benzo-d-imidazol-2-yl-4-hydroxybenzyl-benzofuran-2-yl-phenyl-methanone-analogs
#15
Bhookya Shankar, Pochampally Jalapathi, Balabadra Saikrishna, Shaym Perugu, Vijjulatha Manga
BACKGROUND: There is a dire need for the discovery and development of new antimicrobial agents after several experiments for a better resistance of microorganisms towards antimicrobial agents become a serious health problem for a few years in the past. As benzimidazole possess various types of biological activities, it has been synthesized, in the present study, a new series of (5-(3-(1H-benzo[d]imidazol-2-yl)-4-hydroxybenzyl)benzofuran-2-yl)(phenyl)methanone analogs by using the condensation and screened for its in vitro antimicrobial activity and cytotoxicity...
January 9, 2018: Chemistry Central Journal
https://www.readbyqxmd.com/read/29314782/chemotherapy-induced-oral-mucositis-and-associated-infections-in-a-novel-organotypic-model
#16
Takanori Sobue, Martinna Bertolini, Angela Thompson, Douglas E Peterson, Patricia I Diaz, Anna Dongari-Bagtzoglou
Oral mucositis is a common side effect of cancer chemotherapy, with significant adverse impact on the delivery of anti-neoplastic treatment. There is lack of consensus regarding the role of oral commensal microorganisms in the initiation or progression of mucositis since relevant experimental models are non-existent. The goal of this study was to develop an in vitro mucosal injury model that mimics chemotherapy-induced mucositis, where the effect of oral commensals can be studied. A novel organotypic model of chemotherapy-induced mucositis was developed based on a human oral epithelial cell line and a fibroblast-embedded collagen matrix...
January 4, 2018: Molecular Oral Microbiology
https://www.readbyqxmd.com/read/29313200/use-of-non-living-lyophilized-phanerochaete-chrysosporium-cultivated-in-various-media-for-phenol-removal
#17
Tímea Pernyeszi, Viktor Farkas, Attila Felinger, Borbála Boros, Imre Dékány
The biosorption of phenol on non-living lyophilized mycelial pellets of Phanerochaete chrysosporium cultivated in liquid medium of various compositions was studied in batch biosorption system. The fungal cell surfaces were characterized by FTIR spectroscopy and specific surface charge determination. The sorption kinetics and equilibrium were evaluated using linear and non-linear regression. For adsorption equilibrium, a comparative evaluation is also presented using non-linear least-square estimation and linearization of the Langmuir and anti-Langmuir equations...
January 8, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29311092/pharmacodynamics-of-flubendazole-for-cryptococcal-meningoencephalitis-repurposing-and-reformulation-of-an-anti-parasitic-agent-for-a-neglected-fungal-disease
#18
Gemma L Nixon, Laura McEntee, Adam Johnson, Nikki Farrington, Sarah Whalley, Joanne Livermore, Cristien Natal, Gina Washbourn, Jaclyn Bibby, Neil Berry, Jodi Lestner, Megan Truong, Andrew Owen, David Lalloo, Ian Charles, William Hope
Current therapeutic options for cryptococcal meningitis are limited by toxicity, global supply and emergence of resistance. There is an urgent need to develop additional antifungal agents that are fungicidal within the central nervous system and preferably orally bioavailable. The benzimidazoles have broad-spectrum anti-parasitic activity, but also have in vitro antifungal activity that includes Cryptococcus neoformans Flubendazole (a benzimidazole) has been reformulated by Janssen Pharmaceutica as an amorphous solid drug nanodispersion to develop an orally bioavailable medicine for the treatment of neglected tropical diseases such as onchocerciasis...
January 8, 2018: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29310582/identification-of-uncommon-oral-yeasts-from-cancer-patients-by-maldi-tof-mass-spectrometry
#19
Narges Aslani, Ghasem Janbabaei, Mahdi Abastabar, Jacques F Meis, Mahasti Babaeian, Sadegh Khodavaisy, Teun Boekhout, Hamid Badali
BACKGROUND: Opportunistic infections due to Candida species occur frequently in cancer patients because of their inherent immunosuppression. The aim of the present study was to investigate the epidemiology of yeast species from the oral cavity of patients during treatment for oncological and haematological malignancies. METHODS: MALDI-TOF was performed to identify yeasts isolated from the oral cavity of 350 cancer patients. Moreover, antifungal susceptibility testing was performed in according to CLSI guidelines (M27-A3)...
January 8, 2018: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29306188/ginsenosides-and-ginsenosidases-in-the-pathobiology-of-ginseng-cylindrocarpon-destructans-zinss-scholten
#20
Jiao Wang, Honglei Chen, Juan Gao, Jixun Guo, Xuesong Zhao, Yifa Zhou
To investigate the role that ginsenosides (and some of their metabolites) play in interactions between plants and phytopathogenic fungi (e.g. Cylindrocarpon destructans (Zinss) Scholten), we systematically determined the anti-fungal activities of six major ginsenosides (Rb1, Rb2, Rc, Rd, Re and Rg1), along with the metabolites of ginsenoside Rb1 (Gypenoside XVII (G-XVII) and F2), against the ginseng root pathogen C. destructans (Zinss) Scholten and non-ginseng pathogens Fusarium graminearum Schw., Exserohilum turcicum (Pass...
December 29, 2017: Plant Physiology and Biochemistry: PPB
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