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Yeast Infection

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https://www.readbyqxmd.com/read/28915910/colonization-of-the-bovine-uterus-by-candida-kefyr
#1
Cecilia Christensen Karstrup, Bent Aalbæk, Kirstine Klitgaard, Tim Kåre Jensen, Hanne Gervi Pedersen, Jørgen Steen Agerholm
BACKGROUND: While fungal infections of the bovine uterus are well-known diseases in pregnant cattle, very limited knowledge exists on the presence and significance of fungi in the uterus of non-pregnant cows. Presence of fungi in the uterine lumen of postpartum (pp) cows has been reported, but little attention has been paid to this as most studies of the bovine pp uterus have focused on bacteria. CASE PRESENTATION: Microscopy of uterine lavage cytology slides of three cows from one herd revealed the presence of numerous yeast-like organisms, which were located either free in the fluid or within macrophages...
September 16, 2017: Acta Veterinaria Scandinavica
https://www.readbyqxmd.com/read/28915270/the-single-cyclic-nucleotide-specific-phosphodiesterase-of-the-intestinal-parasite-giardia-lamblia-represents-a-potential-drug-target
#2
Stefan Kunz, Vreni Balmer, Geert Jan Sterk, Michael P Pollastri, Rob Leurs, Norbert Müller, Andrew Hemphill, Cornelia Spycher
BACKGROUND: Giardiasis is an intestinal infection correlated with poverty and poor drinking water quality, and treatment options are limited. According to the Center for Disease Control and Prevention, Giardia infections afflict nearly 33% of people in developing countries, and 2% of the adult population in the developed world. This study describes the single cyclic nucleotide-specific phosphodiesterase (PDE) of G. lamblia and assesses PDE inhibitors as a new generation of anti-giardial drugs...
September 15, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28913896/a-novel-non-azole-topical-treatment-reduces-malassezia-numbers-and-associated-dermatitis-a-short-term-prospective-randomized-blinded-and-placebocontrolled-trial-in-naturally-infected-dogs
#3
Ylva Sjöström, Paul Mellor, Kerstin Bergvall
BACKGROUND: Malassezia yeast overgrowth on the skin is a common and often recurrent cause of dermatitis in dogs; it can be an exacerbating factor of atopic dermatitis. Anti-fungal drugs have been a standard treatment, but there is some concern that resistance may be evolving in a spectrum of Malassezia species. Safe, efficient and easy-to-use alternatives are needed. OBJECTIVES: To assess if a commercially available topical non-azole solution applied to paws affected by Malassezia-associated dermatitis (MAD), could ameliorate Malassezia numbers and associated signs over a short term (14 day) trial...
September 14, 2017: Veterinary Dermatology
https://www.readbyqxmd.com/read/28913343/exacerbating-and-reversing-lysosomal-storage-diseases-from-yeast-to-humans
#4
REVIEW
Tamayanthi Rajakumar, Andrew B Munkacsi, Stephen L Sturley
Lysosomal storage diseases (LSDs) arise from monogenic deficiencies in lysosomal proteins and pathways and are characterized by a tissue-wide accumulation of a vast variety of macromolecules, normally specific to each genetic lesion. Strategies for treatment of LSDs commonly depend on reduction of the offending metabolite(s) by substrate depletion or enzyme replacement. However, at least 44 of the ~50 LSDs are currently recalcitrant to intervention. Murine models have provided significant insights into our understanding of many LSD mechanisms; however, these systems do not readily permit phenotypic screening of compound libraries, or the establishment of genetic or gene-environment interaction networks...
August 25, 2017: Microbial Cell
https://www.readbyqxmd.com/read/28911843/the-effect-of-a-cannula-milk-sampling-technique-on-the-microbiological-diagnosis-of-bovine-mastitis
#5
M Friman, H Hiitiö, M Niemi, J Holopainen, S Pyörälä, H Simojoki
Two methods of collecting milk samples from mastitic bovine mammary quarters were compared. Samples were taken in a consistent order in which standard aseptic technique sampling was done first, followed by insertion of a sterile cannula through the teat canal and collection of a second sample. Microbiological results of those two sampling techniques were compared. Milk samples were analysed using multiplex real-time polymerase chain reaction (PCR). The cannula technique produced a reduced number of microbial species or groups of species per sample compared with conventional sampling...
August 2017: Veterinary Journal
https://www.readbyqxmd.com/read/28911037/a-biologically-conjugated-polysaccharide-vaccine-delivered-by-attenuated-salmonella-typhimurium-provides-protection-against-challenge-of-avian-pathogenic-escherichia-coli-o1-infection
#6
Yue Han, Qing Liu, Jie Yi, Kang Liang, Yunan Wei, Qingke Kong
Avian pathogenic Escherichia coli (APEC) causes avian airsacculitis and colibacillosis, resulting in significant economic loss to the poultry industry. O1, O2 and O78 are the three predominant serotypes. O-antigen of lipopolysaccharide is serotype determinant and highly immunogenic, and O-antigen polysaccharide-based vaccines have great potential for preventing bacterial infections. In this study, we utilized a novel yeast/bacterial shuttle vector pSS26 to clone the 10.8 kb operon synthesizing APEC O1 O-antigen polysaccharide...
November 30, 2017: Pathogens and Disease
https://www.readbyqxmd.com/read/28904994/n-acetylglucosamine-metabolism-promotes-survival-of-candida-albicans-in-the-phagosome
#7
Elisa M Vesely, Robert B Williams, James B Konopka, Michael C Lorenz
Phagocytosis by innate immune cells is one of the most effective barriers against the multiplication and dissemination of microbes within the mammalian host. Candida albicans, a pathogenic yeast, has robust mechanisms that allow survival upon macrophage phagocytosis. C. albicans survives in part because it can utilize the alternative carbon sources available in the phagosome, including carboxylic acids and amino acids. Furthermore, metabolism of these compounds raises the pH of the extracellular environment, which combats the acidification and maturation of the phagolysosome...
September 2017: MSphere
https://www.readbyqxmd.com/read/28904196/vaccinia-virus-encodes-a-novel-inhibitor-of-apoptosis-that-associates-with-the-apoptosome
#8
Melissa R Ryerson, Monique M Richards, Marc Kvansakul, Christine J Hawkins, Joanna L Shisler
Apoptosis is an important anti-viral host defense mechanism. Here we report the identification of a novel apoptosis inhibitor encoded by the vaccinia virus (VACV) M1L gene. M1L is absent in the attenuated MVA strain of VACV, a strain that stimulates apoptosis in several types of immune cells. M1 expression increased the viability of MVA-infected THP-1 and Jurkat cells and reduced several biochemical hallmarks of apoptosis such as PARP-1 and procaspase-3 cleavage. Furthermore, ectopic M1L expression decreased staurosporine-induced (intrinsic) apoptosis in HeLa cells...
September 13, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28902283/new-perspectives-on-the-nutritional-factors-influencing-growth-rate-of-candida-albicans-in-diabetics-an-in-vitro-study
#9
Adrian Man, Cristina Nicoleta Ciurea, Dan Pasaroiu, Ana-Ioana Savin, Felicia Toma, Floredana Sular, Luigi Santacroce, Anca Mare
BACKGROUND: The link between Candida albicans and diabetes mellitus is well-acknowledged, but incompletely elucidated. OBJECTIVES: The purpose of this study is to assess the growth rate of C. albicans (CA) in the presence of different concentrations of glucose and fructose, two of the main pathophysiologic and nutritionally relevant sugars in diabetic patients, in order to obtain a better understanding of the nutrient acquisition strategy and its possible relation to the hyperglycemic status of diabetic patients...
September 2017: Memórias do Instituto Oswaldo Cruz
https://www.readbyqxmd.com/read/28902164/slbir3-negatively-regulates-pamp-responses-and-cell-death-in-tomato
#10
Shuhua Huang, Shuming Nie, Shufen Wang, Jianwei Liu, Yanfeng Zhang, Xiaofeng Wang
Bri1-associated kinase 1 (BAK1)-interacting receptor-like kinase (BIR) proteins have been shown to play important roles in regulating growth and development, pathogen associated molecular pattern (PAMP)-triggered immunity (PTI) responses, and cell death in the model plant, Arabidopsis thaliana. We identified four BIR family members in tomato (Solanum lycopersicum), including SlBIR3, an ortholog of AtBIR3 from A. thaliana. SlBIR3 is predicted to encode a membrane localized non-arginine-aspartate (non-RD) kinase that, based on protein sequence, does not have autophosphorylation activity but that can be phosphorylated in vivo...
September 13, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28900084/-a-betasatellite-encoded-protein-regulates-key-components-of-gene-silencing-system-in-plants
#11
O Eini
Small circular single-stranded DNA satellites, called betasatellites, have been found in association with some monopartite begomovirus infections. The Cotton leaf curl Multan betasatellite (CLCuMuB) is known to influence symptom induction in cotton leaf curl disease. CLCuMuB contains a single gene, βC1, whose product is a pathogenicity determinant and a suppressor of RNA silencing. Although induction of RNA silencing by RNA and DNA viruses has been well documented in plants, the interactions between betasatellites and the host's silencing machinery remain poorly understood...
July 2017: Molekuliarnaia Biologiia
https://www.readbyqxmd.com/read/28895153/characterization-of-an-antimicrobial-and-phytotoxic-ribonuclease-secreted-by-the-fungal-wheat-pathogen-zymoseptoria-tritici
#12
Graeme J Kettles, Carlos Bayon, Caroline A Sparks, Gail Canning, Kostya Kanyuka, Jason J Rudd
The fungus Zymoseptoria tritici is the causal agent of Septoria Tritici Blotch (STB) disease of wheat leaves. Zymoseptoria tritici secretes many functionally uncharacterized effector proteins during infection. Here, we characterized a secreted ribonuclease (Zt6) with an unusual biphasic expression pattern. Transient expression systems were used to characterize Zt6, and mutants thereof, in both host and non-host plants. Cell-free protein expression systems monitored the impact of Zt6 protein on functional ribosomes, and in vitro assays of cells treated with recombinant Zt6 determined toxicity against bacteria, yeasts and filamentous fungi...
September 12, 2017: New Phytologist
https://www.readbyqxmd.com/read/28893786/novel-cell-killing-mechanisms-of-hydroxyurea-and-the-implication-towards-combination-therapy-for-the-treatment-of-fungal-infections
#13
Amanpreet Singh, Ameeta Agarwal, Yong-Jie Xu
We have previously reported that an erg11 mutation affecting ergosterol synthesis and a hem13 mutation in the heme synthesis pathway significantly sensitize the fission yeast Schizosaccahromyces pombe to hydroxyurea (HU) (1, 2). Here we show that treatment with the inhibitors of Erg11 and the heme biosynthesis phenocopies the two mutations in sensitizing wild type cells to HU. Importantly, HU synergistically interacts with the heme biosynthesis inhibitor sampangine and several Erg11 inhibitors, the antifungal azoles, in causing cell lethality...
September 11, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28892309/fundamental-niche-prediction-of-the-pathogenic-yeasts-cryptococcus-neoformans-and-cryptococcus-gattii-in-europe
#14
Massimo Cogliati, Erika Puccianti, Maria Teresa Montagna, Antonella De Donno, Serdar Susever, Cagri Ergin, Aristea Velegraki, Mohamed S Ellabib, Simona Nardoni, Cristina Macci, Laura Trovato, Ludovico Dipineto, Volker Rickerts, Sevim Akcaglar, Emilija Mlinaric-Missoni, Sebastien Bertout, Ana C F Vencà, Ana C Sampaio, Giuseppe Criseo, Stéphane Ranque, Nilgun Cerikcioglu, Anna Marchese, Luigi Vezzulli, Macit Ilkit, Marie Desnos-Ollivier, Vincenzo Pasquale, Itzhack Polacheck, Antonio Scopa, Wieland Meyer, Kennio Ferreira-Paim, Ferry Hagen, Teun Boekhout, Françoise Dromer, Ashok Varma, Kyung J Kwon-Chung, Joäo Inácio, Maria F Colom
Fundamental niche prediction of Cryptococcus neoformans and C. gattii in Europe is an important tool to understand where these yeasts have a high probability to survive in the environment and therefore to identify the areas with high risk of infection. In the present study occurrence data for C. neoformans and C. gattii were compared by MaxEnt software with several bioclimatic conditions as well as with soil characteristics and land use. The results showed that C. gattii distribution can be predicted with high probability along the Mediterranean coast...
September 11, 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/28888971/fungal-infection-in-neural-tissue-of-patients-with-amyotrophic-lateral-sclerosis
#15
Ruth Alonso, Diana Pisa, Ana M Fernández-Fernández, Alberto Rábano, Luis Carrasco
Amyotrophic lateral sclerosis (ALS) is a devastating neurodegenerative disease and the main cause of motor neuron pathology. The etiology of the disease remains unknown, and no effective therapy exists to halt the disease or improve the quality of life. Here, we provide compelling evidence for the existence of fungal infection in ALS. Immunohistochemistry analysis using a battery of antifungal antibodies revealed fungal structures such as yeast and hyphae in the motor cortex, the medulla and the spinal cord, in eleven patients with ALS...
September 6, 2017: Neurobiology of Disease
https://www.readbyqxmd.com/read/28888655/the-matrix-protein-of-vesicular-stomatitis-virus-inhibits-host-directed-transcription-of-target-genes-via-interaction-with-the-tfiih-subunit-p8
#16
Wei Pan, Deguang Song, Wenqi He, Huijun Lu, Yungang Lan, Juanzhen Tong, Feng Gao, Kui Zhao
In response to viral infection, the host innate antiviral response is elicited to limit viral replication. Many viruses have evolved various strategies to circumvent the host antiviral response. It has been reported that matrix (M) protein of vesicular stomatitis virus (VSV) can inhibit host gene expression to evade the host innate immune response. However, the molecular mechanism remains unclear. Here, we demonstrated that VSV M protein inhibited transcription of a reporter gene transfected into BSR-T7/5 cells...
September 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28887382/identification-of-a-novel-salmonella-type-iii-effector-by-quantitative-secretome-profiling
#17
Sen Cheng, Lu Wang, Qian Liu, Linlu Qi, Kaiwen Yu, Zhen Wang, Mei Wu, Yanhua Liu, Jiaqi Fu, Mo Hu, Min Li, Daoguo Zhou, Xiaoyun Liu
Salmonellaenterica serovar Typhimurium is arguably one of the most studied bacterial pathogens and successful infection requires the delivery of its virulence factors (effectors) directly into host cells via the type III secretion systems (T3SSs). Central to Salmonella pathogenesis, these effector proteins have been subjected to extensive studies over the years. Nevertheless, whether additional effectors exist remains unclear. Here we report the identification of a novel Salmonella T3SS effector STM1239 (which we renamed SopF) via quantitative secretome profiling...
September 8, 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/28887004/-mycological-profile-of-hand-onychomycosis-amongs-garba-sellers-in-abidjan-c%C3%A3-te-d-ivoire
#18
P C M Kiki-Barro, A Konaté, F K Kassi, E K Angora, H Bosson-Vanga, A V Bedia-Tanoh, V Djohan, W Yavo, E I H Menan
OBJECTIVE: The aim of this study is to determine the prevalence and the fungi involved in onychomycosis located on fingers in Abidjan. MATERIAL AND METHODS: This study includes the sellers of cooked cassava semolina served with fried tuna fish called "garba". Fines squames specimen was processed with 30% KOH for a direct microscope examination. Serous collection were done in physiological serum. Part of the original sample was cultured on Sabouraud medium with antibiotics (chloramphénicol, actidione)...
September 5, 2017: Journal de Mycologie Médicale
https://www.readbyqxmd.com/read/28884772/afm-combined-to-atr-ftir-reveals-candida-cell-wall-changes-under-caspofungin-treatment
#19
Fabienne Quilès, Isabelle Accoceberry, Célia Couzigou, Grégory Francius, Thierry Noël, Sofiane El-Kirat-Chatel
Fungal pathogens from Candida genus are responsible for severe life-threatening infections and the antifungal arsenal is still limited. Caspofungin, an antifungal drug used for human therapy, acts as a blocking agent of the cell wall synthesis by inhibiting the β-1,3-glucan-synthase encoded by FKS genes. Despite its efficiency, the number of genetic mutants that are resistant to caspofungin is increasing. An important challenge to improve antifungal therapy is to understand cellular phenomenon that are associated with drug resistance...
September 8, 2017: Nanoscale
https://www.readbyqxmd.com/read/28883816/modulation-of-zinc-homeostasis-in-acanthamoeba-castellanii-as-a-possible-antifungal-strategy-against-cryptococcus-gattii
#20
Nicole S Ribeiro, Francine M Dos Santos, Ane W A Garcia, Patrícia A G Ferrareze, Laura F Fabres, Augusto Schrank, Livia Kmetzsch, Marilise B Rott, Marilene H Vainstein, Charley C Staats
Cryptococcus gattii is a basidiomycetous yeast that can be found in the environment and is one of the agents of cryptococcosis, a life-threatening disease. During its life cycle, cryptococcal cells take hold inside environmental predators such as amoebae. Despite their evolutionary distance, macrophages and amoebae share conserved similar steps of phagocytosis and microbial killing. To evaluate whether amoebae also share other antifungal strategies developed by macrophages, we investigated nutritional immunity against cryptococcal cells...
2017: Frontiers in Microbiology
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