keyword
MENU ▼
Read by QxMD icon Read
search

Cryptococcus

keyword
https://www.readbyqxmd.com/read/28934824/acid-fastness-of-histoplasma-in-surgical-pathology-practice
#1
Madhu Rajeshwari, Immaculata Xess, Mehar Chand Sharma, Deepali Jain
BACKGROUND: Histoplasmosis (HP) is diagnosed by visualizing intracellular microorganisms in biopsy and/or culture. Periodic-acid Schiff (PAS) and Gomori methenamine silver (GMS) staining methods are routinely used for identification. The acid-fast property of Histoplasma was identified decades ago, but acid-fast staining has not been practiced in current surgical pathology. Awareness of the acid-fast property of Histoplasma, which is due to mycolic acid in the cell wall, is important in distinguishing Histoplasma from other infective microorganisms...
September 2017: Journal of Pathology and Translational Medicine
https://www.readbyqxmd.com/read/28934415/first-report-of-urease-activity-in-the-novel-systemic-fungal-pathogen-emergomyces-africanus-a-comparison-with-the-neurotrope-cryptococcus-neoformans
#2
Barbra Lerm, Chris Kenyon, Ilan S Schwartz, Heinrich Kroukamp, Riaan de Witt, Nelesh P Govender, G Sybren de Hoog, Alfred Botha
Cryptococcus neoformans is an opportunistic pathogen responsible for the AIDS-defining illness, cryptococcal meningitis. During the disease process, entry of cryptococcal cells into the brain is facilitated by virulence factors that include urease enzyme activity. A novel species of an Emmonsia-like fungus, recently named Emergomyces africanus, was identified as a cause of disseminated mycosis in HIV-infected persons in South Africa. However, in contrast to C. neoformans, the enzymes produced by this fungus, some of which may be involved in pathogenesis, have not been described...
November 1, 2017: FEMS Yeast Research
https://www.readbyqxmd.com/read/28931320/chemical-and-biomolecular-analyses-to-discriminate-three-taxa-of-pistacia-genus-from-sardinia-island-italy-and-their-antifungal-activity
#3
Arianna Marengo, Alessandra Piras, Danilo Falconieri, Silvia Porcedda, Pierluigi Caboni, Pierluigi Cortis, Caterina Foddis, Claudia Loi, Maria José Gonçalves, Lígia Salgueiro, Andrea Maxia
This work reports the results and the comparison concerning the chemical and biomolecular analyses and the antifungal activity of three wild Pistacia species (Anacardiaceae) from Sardinia. Volatile oils from leaves and twigs of Pistacia x saportae, Pistacia lentiscus and Pistacia terebinthus were characterised using GC-FID and GC-MS techniques and tested against some fungal strains. Two DNA nuclear regions (ITS and 5S-rRNA-NTS) were amplified through PCR technique and sequenced. The three **Pistacia have similar chemical profile, although there are some important quantitative differences...
September 20, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28930847/guillain-barr%C3%A3-like-axonal-polyneuropathy-associated-with-toscana-virus-infection-a-case-report
#4
Eugenia Rota, Nicola Morelli, Paolo Immovilli, Paola De Mitri, Donata Guidetti
RATIONALE: Numerous cases of post-infectious Guillain-Barré syndrome (GBS) have been reported in the literature. Toscana virus (TOSV) is an arthropod-borne emerging pathogen in the Mediterranean area. PATIENT CONCERNS: A 40-year-old male patient was admitted to hospital for acute facial weakness, associated to numbness paraesthesias at lower and upper limbs. The neurological examination revealed facial diplegia and reduced tendon reflexes. The nerve conduction studies documented an acute motor and sensory axonal neuropathy (AMSAN); the lumbar puncture detected albuminocytologic dissociation...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28930247/chemical-composition-and-in-vitro-cytotoxic-and-antimicrobial-activities-of-the-essential-oil-from-leaves-of-zanthoxylum-monogynum-st-hill-rutaceae
#5
Fernanda B da Silva, Nara O Dos Santos, Renata C Pascon, Marcelo A Vallim, Carlos R Figueiredo, Roberto C Campos Martins, Patricia Sartorelli
Background: The Zanthoxylum monogynum species belongs to the family Rutaceae and is found in Southeast, Midwest, and Northeast Brazil. For this genus several biological activities have been described. Methods: The essential oil (EO) was obtained from the leaves of Zanthoxylum monogynum by hydro-distillation and was analyzed by gas chromatograph and gas chromatograph/mass spectrometry (GC and GC/MS). Also the EO of Z. monogynum was evaluated for in vitro cytotoxic activity against six tumor cell lines and for antimicrobial activity, performing disk diffusion and MIC assays with yeast and bacterial strains...
May 19, 2017: Medicines (Basel, Switzerland)
https://www.readbyqxmd.com/read/28928997/neurosyphilis-with-concomitant-cryptococcal-and-tuberculous-meningitis-in-a-patient-with-aids-report-of-a-unique-case
#6
Jose Armando Gonzales Zamora, Luis Alberto Espinoza, Rita N Nwanyanwu
Meningitis in individuals living with acquired immunodeficiency syndrome (AIDS) is most frequently infectious in origin and usually due to opportunistic infections. The most common pathogens are Cryptococcus neoformans and Mycobacterium tuberculosis. Treponema pallidum causes neurosyphilis and can complicate HIV infections at any time after the initial infection. Simultaneous infections of the central nervous system caused by these pathogens are very uncommon even in the setting of severe immunosuppression...
2017: Case Reports in Infectious Diseases
https://www.readbyqxmd.com/read/28927230/multi-azole-resistant-strains-of-cryptococcus-neoformans-var-grubii-isolated-from-a-flz-resistant-strain-by-culturing-in-medium-containing-voriconazole
#7
Rui Kano, Miki Okubo, Atsuhiko Hasegawa, Hiroshi Kamata
A Cryptococcus neoformans var. grubii strain, NUBS14020, was the first fluconazole (FLZ)-resistant strain isolated from a feline cryptococcosis. Subsequent work demonstrated that multi-azole-resistant strains are readily isolated from FLZ-resistant strains by culturing in medium containing voriconazole (VRZ). The resulting clones were assessed for mutation and expression of known target genes, including the loci encoding lanosterol 14-α demethylase (ERG11), an ATP-binding cassette (ABC) transporter (AFR1), or a multidrug efflux pump (MEP); mutation and/or overexpression of these genes is known to be associated with azole resistance...
September 11, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/28920786/cryptococcus-neoformans-var-grubii-associated-renal-amyloidosis-causing-protein-losing-nephropathy-in-a-red-kangaroo-macropus-rufus
#8
Mary Irene Thurber, Jenessa Gjeltema, Matthew Sheley, Ray F Wack
A 10-year-old male castrated red kangaroo (Macropus rufus) presented with mandibular swelling. Examination findings included pitting edema with no dental disease evident on examination or radiographs. The results of blood work were moderate azotemia, hypoalbuminemia, and severely elevated urine protein:creatinine ratio (9.9). Radiographs showed an interstitial pattern of the caudal right lung, and an abdominal ultrasound demonstrated scant effusion. Symptomatic and empirical therapy with antibiotics, anti-inflammatory drugs, and an angiotensin-converting enzyme (ACE) inhibitor did not resolve clinical signs...
September 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28920164/purification-and-characterization-of-a-naringinase-from-cryptococcus-albidus
#9
Nataliya Borzova, Olena Gudzenko, Lyudmila Varbanets
Naringinase which was extracted from the fermented broth of Cryptococcus albidus was purified about 42-folds with yield 0.7% by sulfate fractionation and chromatography on Toyopearl HW-60, Fractogel DEAE-650-s, and Sepharose 6B columns. Molecular weight of protein determined by gel filtration and SDS-PAGE was 50 kDa. Naringinase of C. albidus includes high content of the dicarbonic and hydrophobic amino acids. Enzyme contains also carbohydrate component, represented by mannose, galactose, rhamnose, ribose, arabinose, xylose, and glucose...
September 18, 2017: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/28919893/ripk3-fas-associated-death-domain-axis-regulates-pulmonary-immunopathology-to-cryptococcal-infection-independent-of-necroptosis
#10
Zhenzong Fa, Qun Xie, Wei Fang, Haibing Zhang, Haiwei Zhang, Jintao Xu, Weihua Pan, Jinhua Xu, Michal A Olszewski, Xiaoming Deng, Wanqing Liao
Fas-associated death domain (FADD) and receptor interacting protein kinase 3 (RIPK3) are multifunctional regulators of cell death and immune response. Using a mouse model of cryptococcal infection, the roles of FADD and RIPK3 in anti-cryptococcal defense were investigated. Deletion of RIPK3 alone led to increased inflammatory cytokine production in the Cryptococcus neoformans-infected lungs, but in combination with FADD deletion, it led to a robust Th1-biased response with M1-biased macrophage activation. Rather than being protective, these responses led to paradoxical C...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28919350/crystal-structure-of-inositol-1-3-4-5-6-pentakisphosphate-2-kinase-from-cryptococcus-neoformans
#11
Juntaek Oh, Dong-Gi Lee, Yong-Sun Bahn, Sangkee Rhee
The fungal pathogen Cryptococcus neoformans is a causative agent of meningoencephalitis in humans. For its pathogenicity, the inositol polyphosphate biosynthetic pathway plays critical roles. Recently, Ipk1 from C. neoformans (CnIpk1) was identified as an inositol 1,3,4,5,6-pentakisphosphate 2-kinase that catalyzes the phosphorylation of IP5 to form IP6, a substrate for subsequent reaction to produce inositol pyrophosphates, such as PP-IP5/IP7. Furthermore, it was shown that deletion of IPK1 significantly reduces the virulence of C...
September 15, 2017: Journal of Structural Biology
https://www.readbyqxmd.com/read/28914179/neutralization-of-acidic-drainage-by-cryptococcus-sp-t1-immobilized-in-alginate-beads
#12
Masahiko Okai, Chisato Suwa, Shintaro Nagaoka, Nobuo Obara, Daisuke Mitsuya, Ayako Kurihara, Masami Ishida, Naoto Urano
We isolated Cryptococcus sp. T1 from Lake Tazawa's acidic water in Japan. Cryptococcus sp. T1 neutralized an acidic casamino acid solution (pH 3.0) and released ammonia from the casamino acids to aid the neutralization. The neutralization volume was estimated to be approximately 0.4 mL/h. The casamino acids' amino acids decreased (1.24→0.15 mM); ammonia increased (0.22→0.99 mM). We neutralized acidic drainage water (1 L) from a Tamagawa River neutralization plant, which was run through the column with the T1-immobilized alginate beads at a flow rate of 0...
September 15, 2017: Bioscience, Biotechnology, and Biochemistry
https://www.readbyqxmd.com/read/28906280/both-coinfections-of-penicillium-marneffei-and-cryptococcus-neoformans-in-aids-patient-a-report-of-rare-case
#13
Yu-Ye Li, Ummair Saeed, Sha-Sha Wei, Li Wang, Yi-Qun Kuang
No abstract text is available yet for this article.
September 24, 2017: AIDS
https://www.readbyqxmd.com/read/28904437/cryptococcal-infection-in-transplant-kidney-manifesting-as-chronic-allograft-dysfunction
#14
C Agrawal, V Sood, A Kumar, V Raghavan
Invasive fungal infections (IFIs) are a significant cause of morbidity in solid organ transplant (SOT) recipients. Common causes among them are Aspergillus, Candida, and Cryptococcus. Antifungal prophylaxis has led to decrease in overall incidence of IFI; however, there is very little decline in the incidence of Cryptococcal infections of SOT recipients because effective prophylaxis is not available against this infectious agent. Spectrum of manifestation of Cryptococcal infection varies in immunocompetent and immunocompromised host with subclinical and self-limiting with lungs being the primary site in immunocompetent and central nervous system as the most common site in an immunocompromised host...
September 2017: Indian Journal of Nephrology
https://www.readbyqxmd.com/read/28898288/long-term-no-till-a-major-driver-of-fungal-communities-in-dryland-wheat-cropping-systems
#15
Dipak Sharma-Poudyal, Daniel Schlatter, Chuntao Yin, Scot Hulbert, Timothy Paulitz
In the dryland Pacific Northwest wheat cropping systems, no-till is becoming more prevalent as a way to reduce soil erosion and fuel inputs. Tillage can have a profound effect on microbial communities and soilborne fungal pathogens, such as Rhizoctonia. We compared the fungal communities in long-term no-till (NT) plots adjacent to conventionally tilled (CT) plots, over three years at two locations in Washington state and one location in Idaho, US. We used pyrosequencing of the fungal ITS gene and identified 422 OTUs after rarefication...
2017: PloS One
https://www.readbyqxmd.com/read/28898238/glucosamine-stimulates-pheromone-independent-dimorphic-transition-in-cryptococcus-neoformans-by-promoting-crz1-nuclear-translocation
#16
Xinping Xu, Jianfeng Lin, Youbao Zhao, Elyssa Kirkman, Yee-Seul So, Yong-Sun Bahn, Xiaorong Lin
Morphotype switch is a cellular response to external and internal cues. The Cryptococcus neoformans species complex can undergo morphological transitions between the yeast and the hypha form, and such morphological changes profoundly affect cryptococcal interaction with various hosts. Filamentation in Cryptococcus was historically considered a mating response towards pheromone. Recent studies indicate the existence of pheromone-independent signaling pathways but their identity or the effectors remain unknown...
September 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28892401/pulmonary-cryptococcus-presenting-as-a-solitary-pulmonary-nodule
#17
Sivakumar Sudhakaran, Lara Bashoura, John Stewart, Diwakar D Balachandran, Saadia A Faiz
No abstract text is available yet for this article.
September 11, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28892309/fundamental-niche-prediction-of-the-pathogenic-yeasts-cryptococcus-neoformans-and-cryptococcus-gattii-in-europe
#18
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/28889911/fpd-a-comprehensive-phosphorylation-database-in-fungi
#19
Youhuang Bai, Bin Chen, Mingzhu Li, Yincong Zhou, Silin Ren, Qin Xu, Ming Chen, Shihua Wang
Protein phosphorylation, one of the most classic post-translational modification, plays a critical role in diverse cellular processes including cell cycle, growth, and signal transduction pathways. However, the available information about phosphorylation in fungi is limited. Here, we provided a Fungi Phosphorylation Database (FPD) that comprises high-confidence in vivo phosphosites identified by MS-based proteomics in various fungal species. This comprehensive phosphorylation database contains 62 272 non-redundant phosphorylation sites in 11 222 proteins across eight organisms, including Aspergillus flavus, Aspergillus nidulans, Fusarium graminearum, Magnaporthe oryzae, Neurospora crassa, Saccharomyces cerevisiae, Schizosaccharomyces pombe, and Cryptococcus neoformans...
October 2017: Fungal Biology
https://www.readbyqxmd.com/read/28888971/fungal-infection-in-neural-tissue-of-patients-with-amyotrophic-lateral-sclerosis
#20
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
keyword
keyword
10581
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"