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https://www.readbyqxmd.com/read/29785613/neuroinfections-caused-by-fungi
#1
REVIEW
Katarzyna Góralska, Joanna Blaszkowska, Magdalena Dzikowiec
BACKGROUND: Fungal infections of the central nervous system (FIs-CNS) have become significantly more common over the past 2 decades. Invasion of the CNS largely depends on the immune status of the host and the virulence of the fungal strain. Infections with fungi cause a significant morbidity in immunocompromised hosts, and the involvement of the CNS may lead to fatal consequences. METHODS: One hundred and thirty-five articles on fungal neuroinfection in PubMed, Google Scholar, and Cochrane databases were selected for review using the following search words: "fungi and CNS mycoses", CNS fungal infections", "fungal brain infections", " fungal cerebritis", fungal meningitis", "diagnostics of fungal infections", and "treatment of CNS fungal infections"...
May 21, 2018: Infection
https://www.readbyqxmd.com/read/29780913/cryptococcal-choroiditis-in-advanced-aids-with-clinicopathologic-correlation
#2
Christopher M Aderman, Ian R Gorovoy, Daniel L Chao, Michele M Bloomer, Anthony Obeid, Jay M Stewart
Purpose: To describe a case of disseminated cryptococcal meningitis with multifocal choroiditis and provide optical coherence tomography (OCT) findings correlated with described histopathology in a patient with advanced acquired immunodeficiency syndrome (AIDS). Observations: The patient was a 54-year-old man with AIDS who presented with dyspnea and headache followed by acute vision loss. OCT demonstrated a lesion with a small area of fluid that was limited by a more prominent and irregular external limiting membrane with underlying nodular choroidal thickening, mild RPE disorganization, and hyperreflectivity of the overlying photoreceptor layer...
June 2018: American Journal of Ophthalmology Case Reports
https://www.readbyqxmd.com/read/29775477/cryptococcus-neoformans-can-form-titan-like-cells-in-vitro-in-response-to-multiple-signals
#3
Nuria Trevijano-Contador, Haroldo Cesar de Oliveira, Rocío García-Rodas, Suélen Andreia Rossi, Irene Llorente, Ángel Zaballos, Guilhem Janbon, Joaquín Ariño, Óscar Zaragoza
Cryptococcus neoformans is an encapsulated pathogenic yeast that can change the size of the cells during infection. In particular, this process can occur by enlarging the size of the capsule without modifying the size of the cell body, or by increasing the diameter of the cell body, which is normally accompanied by an increase of the capsule too. This last process leads to the formation of cells of an abnormal enlarged size denominated titan cells. Previous works characterized titan cell formation during pulmonary infection but research on this topic has been hampered due to the difficulty to obtain them in vitro...
May 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29771787/point-of-care-cryptococcal-antigen-screening-pipetting-finger-prick-blood-improves-performance-of-immuno-mycologics-lateral-flow-assay
#4
Rachel M Wake, Joseph N Jarvis, Thomas S Harrison, Nelesh P Govender
BACKGROUND: Cryptococcal antigen (CrAg) screening at point of care could improve cryptococcal meningitis prevention where laboratory resources are limited. We evaluated the accuracy of Immuno-Mycologics (IMMY, Norman, OK) CrAg lateral flow assay (LFA) using different techniques at point of care. SETTING: Two tertiary-level hospitals in Johannesburg and a community health clinic in Soweto, South Africa. METHODS: A case-control diagnostic validation study, and a prospective clinic-based implementation study using the IMMY CrAg LFA on finger-prick blood...
April 30, 2018: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/29762761/burden-of-acute-kidney-injury-in-hiv-patients-under-deoxycholate-amphotericin-b-therapy-for-cryptococcal-meningitis-and-cost-minimization-analysis-of-amphotericin-b-lipid-complex
#5
Felipe Francisco Tuon, Khaiany Lino Florencio, Jaime L Rocha
Deoxycholate amphotericin B (d-AMB) has a higher rate of acute kidney injury (AKI) in comparison of lipid formulations. However, lipid amphotericin B has high costs in developing countries. The aim of this study is to assemble a model of cost-minimization of amphotericin B lipid complex (ABLC) in patients with cryptococcal meningitis. This is a retrospective study done in a cohort of patients with cryptococcal meningitis to study the economic impact of its use in developing countries. Cost analysis were based on direct cost of different antifungal therapies, chronic dialysis after discharge, and survival of patients based on a retrospective cohort of 102 patients infected with human immunodeficiency virus with confirmed diagnosis of cryptococcal meningitis...
May 14, 2018: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/29760146/copper-acyl-salicylate-has-potential-as-an-anti-cryptococcus-anti-fungal-agent
#6
Adepemi O Ogundeji, Boitumelo F Porotloane, Carolina H Pohl, Pravin S Kendrekar, Olihile M Sebolai
The in vitro anti-fungal activity of aspirin against cryptococcal cells has been reported. However, its undesired effects may limit its clinical application. Conceivably, a derivative of aspirin could overcome this challenge. Toward this end, this paper considered the usage of an aspirinate-metal complex viz. copper acyl salicylate (CAS) as an anti- Cryptococcus anti-fungal agent. Additionally, the paper examined the influence of this compound on macrophage function. The in vitro susceptibility results revealed that cryptococcal cells were vulnerable (in a dose-dependent manner) to CAS, which may have effected growth inhibition by damaging cryptococcal cell membranes...
May 14, 2018: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29756504/tuberculous-peritonitis-and-pleurisy-accompanied-by-pulmonary-cryptococcosis-a-case-report
#7
Jian-Kun Chen, Shu-Bin Cai, Qian Cai, Hang Qi, Ji-Qiang Li
Although the infectious diseases tuberculosis (TB) and cryptococcosis both cause formation of single or multiple nodules in immunodeficient hosts, cases of co-infection of these diseases are rarely seen. We report a patient who was co-infected with TB and cryptococcosis. A male patient with no clinical evidence of immunodeficiency presented with a 3-week history of abdominal distension accompanied by oedema of recurring lower extremities. The patient was diagnosed with tuberculous peritonitis and tuberculous pleurisy by an abdominal puncture biopsy...
January 1, 2018: Journal of International Medical Research
https://www.readbyqxmd.com/read/29749873/fatal-cryptococcal-meningitis-in-an-aids-patient-complicated-with-immune-reconstitution-syndrome-refractory-to-prolonged-amphotericin-b-treatment
#8
Thilinie D Bandaranayake, Onyema E Ogbuagu, Amit Mahajan, Alexander O Vortmeyer, Merceditas S Villanueva
Cryptococcus neoformans is a ubiquitous encapsulated environmental yeast that can cause severe central nervous system disease, primarily in immune compromised hosts. In patients with AIDS, the spectrum of cryptococcal central nervous system disease includes meningitis, cystic lesions, and mass-like cryptococcomas. We report a fatal case of meningitis and cerebritis caused by C. neoformans in an AIDS patient refractory to multiple courses of liposomal amphotericin B despite immune recovery with antiretroviral therapy...
January 1, 2018: International Journal of STD & AIDS
https://www.readbyqxmd.com/read/29747285/-expert-consensus-on-the-diagnosis-and-treatment-of-cryptococcal-meningitis
#9
Z Y Liu, G Q Wang, L P Zhu, X J Lyu, Q Q Zhang, Y S Yu, Z H Zhou, Y B Liu, W P Cai, R Y Li, W H Zhang, F J Zhang, H Wu, Y C Xu, H Z Lu, T S Li
Cryptococcal meningitis is a common and refractory central nervous system infection, with high rates of mortality and disability. The experts of the Society of Infectious Diseases of Chinese Medical Association have reached this consensus after a thorough discussion. Based on the current situation of cryptococcal meningitis in China, the management of cryptococcal meningitis includes 6 aspects: introduction, microorganism identification, clinical manifestations and diagnosis, principles of antifungal therapy, treatment of refractory and recurrent meningitis, treatment of intracranial hypertension...
May 1, 2018: Zhonghua Nei Ke za Zhi [Chinese Journal of Internal Medicine]
https://www.readbyqxmd.com/read/29746320/false-negative-cryptococcal-antigen-test-due-to-the-postzone-phenomenon
#10
Noah Kojima, Mayamiko Chimombo, Daniel G Kahn
No abstract text is available yet for this article.
June 1, 2018: AIDS
https://www.readbyqxmd.com/read/29742199/diagnostic-and-therapeutic-strategies-in-cryptococcosis-impact-on-outcome
#11
Timothée Boyer Chammard, Elvis Temfack, Olivier Lortholary, Alexandre Alanio
Cryptococcosis diagnosis has been recently improved by the use of rapid cryptococcal antigen testing with lateral flow assays, which have proved sensitive and specific. Using "test and treat" screening strategies for cryptococcal disease with these tests has been showed effective in reducing cryptococcal meningitis (CM) in HIV-infected patients. Recommended induction, consolidation, and maintenance therapeutic strategy for CM is widely unavailable and/or expensive in low and middle-income settings...
2018: Memórias do Instituto Oswaldo Cruz
https://www.readbyqxmd.com/read/29740519/repurposing-drugs-to-fast-track-therapeutic-agents-for-the-treatment-of-cryptococcosis
#12
Megan Truong, Leigh G Monahan, Dee A Carter, Ian G Charles
Many infectious diseases disproportionately affect people in the developing world. Cryptococcal meningitis is one of the most common mycoses in HIV-AIDS patients, with the highest burden of disease in sub-Saharan Africa. Current best treatment regimens still result in unacceptably high mortality rates, and more effective antifungal agents are needed urgently. Drug development is hampered by the difficulty of developing effective antifungal agents that are not also toxic to human cells, and by a reluctance among pharmaceutical companies to invest in drugs that cannot guarantee a high financial return...
2018: PeerJ
https://www.readbyqxmd.com/read/29738314/treatment-of-cryptococcosis-in-non-hiv-immunocompromised-patients
#13
Andrés F Henao-Martínez, Daniel B Chastain, Carlos Franco-Paredes
PURPOSE OF REVIEW: Cryptococcosis has become a common opportunistic infection among non-HIV immunocompromised hosts. Recent reports have shown the incidence of Cryptococcosis among HIV-negative immunocompromised patients reaches close to half of the overall cases reported in the USA. Management of this infection in this population carries unique challenges. We aim to review relevant and recent research findings to develop treatment recommendations for this type of population. RECENT FINDINGS: Most of the recommendations for the management of non-HIV immunocompromised host are extrapolated from HIV studies...
May 5, 2018: Current Opinion in Infectious Diseases
https://www.readbyqxmd.com/read/29737452/comparison-of-clinical-features-and-prognostic-factors-of-cryptococcal-meningitis-caused-by-cryptococcus-neoformans-in-patients-with-and-without-pulmonary-nodules
#14
Wenhao Cao, Cui Jian, Huojun Zhang, Shuyun Xu
Whether the clinical features of cryptococcal meningitis (CM) patients vary with the coexistence of pulmonary nodules is not clear. This study aimed to compare the clinical features of CM in patients with and without pulmonary nodules detected by chest computed tomography (CT). The medical records of CM patients hospitalized in Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology from January 1, 2010, to December 31, 2016, were retrospectively reviewed. Baseline demographics, laboratory and radiographic findings, clinical managements, and outcomes were analyzed...
May 8, 2018: Mycopathologia
https://www.readbyqxmd.com/read/29735567/amphotericin-b-deoxycholate-in-adults-with-cryptococcal-meningitis-a-population-pharmacokinetic-model-and-meta-analysis-of-outcomes
#15
Katharine E Stott, Justin Beardsley, Sarah Whalley, Freddie Mukasa Kibengo, Nguyen Thi Hoang Mai, Ruwanthi Kolamunnage-Dona, William Hope, Jeremy Day
There is a limited understanding of the population pharmacokinetics (PK) and pharmacodynamics (PD) of amphotericin B deoxycholate (DAmB) for cryptococcal meningitis (CM). A PK study was conducted in n=42 patients receiving DAmB 1 mg/kg q24h. A 2-compartment PK model was developed. Patient weight influenced clearance and volume in the final structural model. Monte Carlo simulations estimated drug exposure associated with various DAmB dosages. A search was conducted for trials reporting outcomes of CM patients treated with DAmB monotherapy and a meta-analysis was performed...
May 7, 2018: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29727294/croi-2018-complications-of-hiv-infection-and-antiretroviral-therapy
#16
Judith S Currier, Diane V Havlir
This year marked the 25th Conference on Retroviruses and Opportunistic Infections (CROI), and although there is much progress to celebrate in terms of treatment of HIV infection and expanding ART globally, many challenges remain. Tuberculosis is still the leading cause of death among people with HIV infection globally. This year, the results of investments in research to improve the prevention and treatment of tuberculosis were a highlight of the meeting. Noninfectious causes remain an important source of morbidity...
May 2018: Topics in Antiviral Medicine
https://www.readbyqxmd.com/read/29724221/use-of-pinus-sylvestris-l-pinaceae-origanum-vulgare-l-lamiaceae-and-thymus-vulgaris-l-lamiaceae-essential-oils-and-their-main-components-to-enhance-itraconazole-activity-against-azole-susceptible-not-susceptible-cryptococcus-neoformans-strains
#17
Daniela Scalas, Narcisa Mandras, Janira Roana, Roberta Tardugno, Anna Maria Cuffini, Valeria Ghisetti, Stefania Benvenuti, Vivian Tullio
BACKGROUND: Cryptococcal infections, besides being a problem for immunocompromised patients, are occasionally being a problem for immunocompetent patients. In addition, the lower susceptibility of this yeast to azoles is a growing problem in health care. To date, there are very few molecules with any activity towards Cryptococcus neoformans, leading to heightened interest in finding new alternatives or adjuvants to conventional drugs for the treatment of mycosis caused by this yeast. Since the essential oils (EOs) are considered as a potential rich source of bioactive antimicrobial compounds, we evaluated the antifungal activity of Origanum vulgare (oregano), Pinus sylvestris (pine), and Thymus vulgaris (thyme red) EOs, and their components (α-pinene, carvacrol, thymol) compared with fluconazole, itraconazole, and voriconazole, against C...
May 3, 2018: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/29716538/ventriculoperitoneal-shunts-in-non-hiv-cryptococcal-meningitis
#18
Jia Liu, Zhuo-Lin Chen, Min Li, Chuan Chen, Huan Yi, Li Xu, Feng Tan, Fu-Hua Peng
BACKGROUND: Persistent and uncontrollable intracranial hypertension (ICH) and difficulty in reducing Cryptococcus count are severe problems in cryptococcal meningitis (CM) patients. The therapeutic effects of ventriculoperitoneal shunts (VPS) in non-HIV CM patients are not fully known, and the procedure is somewhat unusual. Here, our study offers a review to investigate the role of VPS in non-HIV CM. METHODS: We retrospectively collected data on 23 non-HIV CM patients with and without ventriculomegaly from 2010 to 2016...
May 1, 2018: BMC Neurology
https://www.readbyqxmd.com/read/29712729/conservation-of-intracellular-pathogenic-strategy-among-distantly-related-cryptococcal-species
#19
Joudeh B Freij, Man Shun Fu, Carlos M De Leon Rodriguez, Amanda Dziedzic, Anne E Jedlicka, Quigly Dragotakes, Diego C P Rossi, Eric H Jung, Carolina Coelho, Arturo Casadevall
The genus Cryptococcus includes several pathogenic species for humans. Until recently, the two major pathogenic species were recognized as C. neoformans (Cn) and C. gattii (Cg). We compared the interaction of murine macrophages with three Cg species complex strains (WM179, R265, and WM161, representing molecular types VGI, VGIIa, and VGIII, respectively) and one Cn species complex strain (H99, molecular type VNI) to ascertain similarities and differences in the yeast intracellular pathogenic strategy. Parameters analyzed include non-lytic exocytosis frequency, phagolysosomal pH, intracellular capsular growth, phagolysosomal membrane permeabilization, and macrophage transcriptional response, assessed using time-lapse microscopy, fluorescence microscopy, flow cytometry and gene expression microarray analysis...
April 30, 2018: Infection and Immunity
https://www.readbyqxmd.com/read/29695056/burden-of-serious-fungal-infections-in-argentina
#20
Fernando O Riera, Juan P Caeiro, David W Denning
The number of fungal infections at any given time in Argentina is not known. Here we estimate the burden of serious fungal infections in Argentina for the first time. Specific population statistics were searched from multiple sources, local literature was identified, and estimates made. Some additional data were sourced from the Ministry of Health, the Global Initiative for Asthma (GINA) program, and national haematology and transplant societies. Argentina has a population of 43.8 million, with 25% of this total being children under 15 years...
April 24, 2018: Journal of Fungi (Basel, Switzerland)
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