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https://www.readbyqxmd.com/read/28346317/the-csf-immune-response-in-hiv-1-associated-cryptococcal-meningitis-macrophage-activation-correlates-of-disease-severity-and-effect-of-antiretroviral-therapy
#1
James E Scriven, Lisa M Graham, Charlotte Schutz, Thomas J Scriba, Katalin A Wilkinson, Robert J Wilkinson, David R Boulware, Britta C Urban, Graeme Meintjes, David G Lalloo
BACKGROUND: Immune modulation may improve outcome in HIV-associated cryptococcal meningitis. Animal studies suggest alternatively activated macrophages are detrimental but human studies are limited. We performed a detailed assessment of the cerebrospinal fluid (CSF) immune response and examined immune correlates of disease severity and poor outcome, and the effects of antiretroviral therapy (ART). METHODOLOGY: We enrolled persons ≥18 years with first episode of HIV-associated cryptococcal meningitis...
March 24, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28339414/update-on-the-application-of-optic-nerve-sheath-fenestration
#2
Hui Chen, Qian Zhang, Song Tan, Huazhu Fu, Bradley K Farris, Zhenglin Yang
BACKGROUND: With the ongoing development of surgical procedures and instruments, the safety of optic nerve sheath fenestration (ONSF) has been improved. OBJECTIVE: Through the past three decades, progress has been made in preventing visual loss from chronic optic nerve swelling in idiopathic intracranial hypertension (IIH), secondary intracranial hypertension and local optic nerve diseases. We now review the updated application of ONSF in those diseases. METHODS: The application of ONSF in papilledema due to IIH, secondary intracranial hypertension to cerebral venous sinus occlusion, Cryptococcal meningitis, and intracranial mass or tumors is reviewed...
March 23, 2017: Restorative Neurology and Neuroscience
https://www.readbyqxmd.com/read/28335769/cost-effectiveness-of-crag-lfa-screening-for-cryptococcal-meningitis-among-people-living-with-hiv-in-uganda
#3
Anu Ramachandran, Yukari Manabe, Radha Rajasingham, Maunank Shah
BACKGROUND: Cryptococcal meningitis (CM) constitutes a significant source of mortality in resource-limited regions. Cryptococcal antigen (CRAG) can be detected in the blood before onset of meningitis. We sought to determine the cost-effectiveness of implementing CRAG screening using the recently developed CRAG lateral flow assay in Uganda compared to current practice without screening. METHODS: A decision-analytic model was constructed to compare two strategies for cryptococcal prevention among people living with HIV with CD4 < 100 in Uganda: No cryptococcal screening vs...
March 23, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28334020/immune-correlates-of-hiv-associated-cryptococcal-meningitis
#4
Mark W Tenforde, James E Scriven, Thomas S Harrison, Joseph N Jarvis
No abstract text is available yet for this article.
March 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28333858/immune-reconstitution-inflammatory-syndrome-causing-progressive-optic-nerve-edema-in-cryptococcal-meningitis
#5
Astrid C Werner, Laurel N Vuong, Thomas R Hedges, Caroline R Baumal
PURPOSE: To report an human immunodeficiency virus-positive patient undergoing therapy for cryptococcal meningitis who developed progressive optic disc edema that was steroid responsive. METHODS: Observational case report. RESULTS: One month after commencing antifungal treatment for cryptococcal meningitis, the patient developed bilateral, progressive, recurrent optic disc edema with subretinal fluid that coincided with initiation of highly active antiretroviral therapy and recovery of CD4 cell counts...
March 22, 2017: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/28329080/differences-in-immunologic-factors-among-patients-presenting-with-altered-mental-status-during-cryptococcal-meningitis
#6
Sarah Lofgren, Kathy H Hullsiek, Bozena M Morawski, Henry W Nabeta, Reuben Kiggundu, Kabanda Taseera, Abdu Musubire, Charlotte Schutz, Mahsa Abassi, Nathan C Bahr, Lillian Tugume, Conrad Muzoora, Darlisha A Williams, Melissa A Rolfes, Sruti S Velamakanni, Radha Rajasingham, Graeme Meintjes, Joshua Rhein, David B Meya, David R Boulware
Altered mental status in cryptococcal meningitis results in poorer survival, but underlying causes of altered mentation are poorly understood. Within two clinical trials, we assessed risk factors for altered mental status (GCS score<15) considering baseline clinical characteristics, CSF cytokines/chemokines, and antiretroviral therapy. Among 326 enrolled participants, 97 (30%) had GCS<15 and these patients had lower median CSF cryptococcal antigen titers (P=0.042) and CCL2 (P=0.005) but higher opening pressures (320 vs...
January 30, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28326747/laboratory-methods-for-diagnostics-of-hiv-infection-and-hiv-associated-neuroinfections
#7
Pavol Beno, Alzbeta Kaiglova, Martin Samohyl
HIV Infection resulting in AIDS remains serious global public health problem. In the fight with the global health problem plays a key role a simple, reliable and fast diagnostics. An important method in diagnostics is the identification and detection of viral capside p24 antigen levels. Fourth generation tests for the diagnostics of HIV infection simultaneously detect the presence of HIV antibodies and p24 antigen. Based on the monitoring of CD4 count, we can estimate the stage in which the infection is, and we can also suggest a therapeutic approach...
January 2017: Neuro Endocrinology Letters
https://www.readbyqxmd.com/read/28323835/molecular-epidemiology-of-cryptococcal-genotype-vnic-st5-in-siriraj-hospital-thailand
#8
Chanin Hatthakaroon, Sujiraphong Pharkjaksu, Piriyaporn Chongtrakool, Kamol Suwannakarn, Pattarachai Kiratisin, Popchai Ngamskulrungroj
Despite the strong association between Cryptococcus neoformans infection and the Human immunodeficiency virus (HIV) status of patients globally, most cryptococcosis cases in Far East Asia occur in non-HIV individuals. Molecular epidemiological studies, using multilocus sequence typing (MLST), have shown that more than 95% of cryptococcal strains belong to a specific subtype of VNI. However, this association has never been specifically examined in other parts of Asia. Therefore, in this study, we investigated the VNIc/ST5 genotype distribution among cryptococcosis patients in Thailand...
2017: PloS One
https://www.readbyqxmd.com/read/28320715/experimental-models-of-short-courses-of-liposomal-amphotericin-b-for-induction-therapy-for-cryptococcal-meningitis
#9
Jodi Lestner, Laura McEntee, Adam Johnson, Joanne Livermore, Sarah Whalley, Julie Schwartz, John R Perfect, Thomas Harrison, William Hope
Cryptococcal meningoencephalitis is a rapidly lethal infection in immunocompromised patients. Induction regimens are usually administered for 2-weeks. The shortest effective period of induction therapy with liposomal amphotericin B (LAmB) is unknown. The pharmacodynamics of LAmB were studied in murine and rabbit models of cryptococcal meningoencephalitis. The concentrations of LAmB in plasma and brain of mice were measured using HPLC. Histopathological changes were determined. The penetration of LAmB into the brain was determined by immunohistochemistry using an antibody directed to amphotericin B...
March 20, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28317465/anti-cryptococcal-activity-of-ethanol-crude-extract-and-hexane-fraction-from-ocimum-basilicum-var-maria-bonita-mechanisms-of-action-and-synergism-with-amphotericin-b-and-ocimum-basilicum-essential-oil
#10
Nathalia N R Cardoso, Celuta S Alviano, Arie F Blank, Maria de Fátima Arrigoni-Blank, Maria Teresa V Romanos, Marcel M L Cunha, Antonio Jorge R da Silva, Daniela S Alviano
CONTEXT: Ocimum basilicum L. (Lamiaceae) has been used in folk medicine to treat headaches, kidney disorders, and intestinal worms. OBJECTIVE: This study evaluates the anti-cryptococcal activity of ethanol crude extract and hexane fraction obtained from O. basilicum var. Maria Bonita leaves. MATERIALS AND METHODS: The MIC values for Cryptococcus sp. were obtained according to Clinical and Laboratory Standards Institute in a range of 0.3-2500 μg/mL...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/28303828/high-prevalence-of-cryptococcal-antigenaemia-amongst-asymptomatic-advanced-hiv-patients-in-pune-india
#11
Dileep Kadam, Ajay Chandanwale, Renu Bharadwaj, Neetal Nevrekar, Samir Joshi, Sandesh Patil, Nikhil Gupte, Shashi Sangle, Kavita Chopade, Vandana Kulkarni, Usha Balasubramanian, Nishi Suryavanshi, Divyashri Jain, Savita Kanade, Sujata Dharmashale, Anju Kagal, Amita Gupta, Vidya Mave
BACKGROUND: The World Health Organization recommends routine cryptococcal antigen (CrAg) screening in advanced AIDS patients initiating antiretroviral treatment (ART). India has yet to adopt this strategy as the burden of cryptococcal antigenaemia is unknown. METHODS: A prospective study was conducted in a large public sector ART centre and the inpatient wards of Sassoon Hospital, Pune, India. All consenting patients> 18 years of age with CD4 count <100 cells/mm3 were screened for CrAg by latex agglutination assay...
January 2017: Indian Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28303817/screening-of-invasive-fungal-infections-by-a-real-time-panfungal-pan-acf-polymerase-chain-reaction-assay-in-patients-with-haematological-malignancy
#12
Malini Rajinder Capoor, Shikha Puri, Hitesh Raheja, Ritin Mohindra, Dinesh Kumar Gupta, Pradeep Kumar Verma, Ranadeep Chowdhary
BACKGROUND: Invasive fungal infection (IFI) is a fatal infection in haematology patients. There is an urgent need for reliable screening methods facilitating timely diagnosis and treatment. A real-time panfungal polymerase chain reaction (PCR) assay based on TaqMan technology targeting 18S ribosomal RNA gene was used to screen whole blood specimen obtained from series of Haematology malignancy patients for IFIs. MATERIALS AND METHODS: The panfungal (Pan-ACF) assay was employed to investigate specimen from 133 patients in duplicate with suspected IFI...
January 2017: Indian Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28301552/radiological-characteristics-of-pulmonary-cryptococcosis-in-hiv-infected-patients
#13
Zhiliang Hu, Jun Chen, Juan Wang, Qingfang Xiong, Yandan Zhong, Yongfeng Yang, Chuanjun Xu, Hongxia Wei
BACKGROUND: Current understanding of human immunodeficiency virus (HIV)-associated pulmonary cryptococcosis (PC) is largely based on studies performed about 2 decades ago which reported that the most common findings on chest radiograph were diffuse interstitial infiltrates. Few studies are available regarding the computed tomography (CT) findings. The aim of this study was to characterize chest CT features of HIV-associated PC. METHODS: HIV patients with cryptococccal infection and pulmonary abnormalities on Chest CT between September 2010 and May 2016 in the Second Affiliated Hospital of the Southeast University were retrospectively analyzed...
2017: PloS One
https://www.readbyqxmd.com/read/28298522/scavenger-receptor-marco-orchestrates-early-defenses-and-contributes-to-fungal-containment-during-cryptococcal-infection
#14
Jintao Xu, Adam Flaczyk, Lori M Neal, Zhenzong Fa, Alison J Eastman, Antoni N Malachowski, Daphne Cheng, Bethany B Moore, Jeffrey L Curtis, John J Osterholzer, Michal A Olszewski
The scavenger receptor macrophage receptor with collagenous structure (MARCO) promotes protective innate immunity against bacterial and parasitic infections; however, its role in host immunity against fungal pathogens, including the major human opportunistic fungal pathogen Cryptococcus neoformans, remains unknown. Using a mouse model of C. neoformans infection, we demonstrated that MARCO deficiency leads to impaired fungal control during the afferent phase of cryptococcal infection. Diminished fungal containment in MARCO(-/-) mice was accompanied by impaired recruitment of Ly6C(high) monocytes and monocyte-derived dendritic cells (moDC) and lower moDC costimulatory maturation...
March 15, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28285287/disseminated-cryptococcosis-in-an-immunocompetent-toddler
#15
Neeraj Gupta, Anil Sachdev, Dhiren Gupta, Nita Radhakrishnan
BACKGROUND: Immunodeficient children are more prone for invasive cryptococcal infections. CASE CHARACTERISTICS: A 2-year-old boy with disseminated cryptococcosis was evaluated for underlying immunodeficiency without success. INTERVENTION/OUTCOME: Child was managed successfully. MESSAGE: Immunocompetent children with disseminated cryptococcosis can present diagnostic or therapeutic challenge in resource-limited settings...
February 15, 2017: Indian Pediatrics
https://www.readbyqxmd.com/read/28270580/microevolution-of-serial-clinical-isolates-of-cryptococcus-neoformans-var-grubii-and-c-%C3%A2-gattii
#16
Yuan Chen, Rhys A Farrer, Charles Giamberardino, Sharadha Sakthikumar, Alexander Jones, Timothy Yang, Jennifer L Tenor, Omar Wagih, Marelize Van Wyk, Nelesh P Govender, Thomas G Mitchell, Anastasia P Litvintseva, Christina A Cuomo, John R Perfect
The pathogenic species of Cryptococcus are a major cause of mortality owing to severe infections in immunocompromised as well as immunocompetent individuals. Although antifungal treatment is usually effective, many patients relapse after treatment, and in such cases, comparative analyses of the genomes of incident and relapse isolates may reveal evidence of determinative, microevolutionary changes within the host. Here, we analyzed serial isolates cultured from cerebrospinal fluid specimens of 18 South African patients with recurrent cryptococcal meningitis...
March 7, 2017: MBio
https://www.readbyqxmd.com/read/28264683/cryptococcal-meningoencephalitis-in-hiv-aids-when-to-start-antiretroviral-therapy
#17
EDITORIAL
Carlos Franco-Paredes, Daniel B Chastain, Alfonso J Rodriguez-Morales, Luis A Marcos
No abstract text is available yet for this article.
March 6, 2017: Annals of Clinical Microbiology and Antimicrobials
https://www.readbyqxmd.com/read/28247152/magnetic-resonance-imaging-study-of-cryptococcal-neuroradiological-lesions-in-hiv-negative-cryptococcal-meningitis
#18
Y Zhong, Z Zhou, X Fang, F Peng, W Zhang
Magnetic resonance (MR) scanning has become an important diagnostic and management tool in cryptococcal meningitis (CM). However, there are only isolated case reports documenting neuroradiological findings in human immunodeficiency virus (HIV)-negative patients with CM and none has clearly addressed the relationship between cerebral lesions on magnetic resonance imaging (MRI) and prognosis. The MR brain images available from 114 HIV-negative patients with CM were retrospectively analysed. Patients were divided into Group I with one or more CM-related lesions and Group II without CM-related lesions...
February 28, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28243758/burden-of-serious-fungal-infections-in-guatemala
#19
N Medina, B Samayoa, D Lau-Bonilla, D W Denning, R Herrera, D Mercado, B Guzmán, J C Pérez, E Arathoon
Guatemala is a developing country in Central America with a high burden of HIV and endemic fungal infections; we attempted to estimate the burden of serious fungal infections for the country. A full literature search was done to identify epidemiology papers reporting fungal infections from Guatemala. We used specific populations at risk and fungal infection frequencies in the population to estimate national rates. The population of Guatemala in 2013 was 15.4 million; 40% were younger than 15 and 6.2% older than 60...
February 27, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28220745/is-it-possible-to-differentiate-tuberculous-and-cryptococcal-meningitis-in-hiv-infected-patients-using-only-clinical-and-basic-cerebrospinal-fluid-characteristics
#20
J E Vidal, E J F Peixoto de Miranda, J Gerhardt, M Croda, D R Boulware
BACKGROUND: Tuberculous and cryptococcal meningitis (TBM and CM) are the most common causes of opportunistic meningitis in HIVinfected patients from resource-limited settings, and the differential diagnosis is challenging. OBJECTIVE: To compare clinical and basic cerebrospinal fluid (CSF) characteristics between TBM and CM in HIV-infected patients. METHODS: A retrospective analysis was conducted of clinical, radiological and laboratory records of 108 and 98 HIV-infected patients with culture-proven diagnosis of TBM and CM, respectively...
January 30, 2017: South African Medical Journal, Suid-Afrikaanse Tydskrif Vir Geneeskunde
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