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Amphotericin

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https://www.readbyqxmd.com/read/28534445/differential-expression-of-micro-rnas-and-their-predicted-targets-in-renal-cells-exposed-to-amphotericin-b-and-its-complex-with-copper-ii-ions
#1
Joanna Magdalena Gola, Barbara Strzałka-Mrozik, Celina Kruszniewska-Rajs, Jolanta Adamska, Mariusz Gagoś, Urszula Mazurek
MicroRNAs (miRNAs) have been reported to regulate essential biological processes, and their expression was shown to be affected by pathological processes and drug-induced toxicity. Amphotericin B (AmB) can cause liver and kidney injury, but a recently developed complex of AmB with copper (II) ions (AmB-Cu(2+)) exhibits a lower toxicity to human renal cells while retaining a high antifungal activity. The aim of our study was to assess AmB-Cu(2+)- induced changes in the miRNA profile of renal cells and to examine which biological processes are significantly affected by AmB-Cu(2+)...
May 23, 2017: Toxicology Mechanisms and Methods
https://www.readbyqxmd.com/read/28533242/coadministration-of-liposomal-amphotericin-b-and-contrast-medium-does-not-increase-risk-of-kidney-injury
#2
John C O'Horo, Douglas R Osmon, Omar M Abu Saleh, Jasmine R Marcelin, Kamel A Gharaibeh, Abdurrahman M Hamadah, Amelia K Barwise, Bryce M Kayhart, Jennifer S McDonald, Robert J McDonald, Nelson Leung
Intravenous radiographic contrast medium and amphotericin B are commonly required in the care of patients with fungal infections. Both interventions have proposed nephrotoxicity through similar mechanisms. We systematically examined patients who received coadministration of liposomal amphotericin B (AmBisome; GE Healthcare) and intravenous contrast medium within a 24-hour period and compared them with patients who underwent non--contrast medium studies. We found 114 cases and 85 controls in our study period...
May 22, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28532080/antibiotic-loaded-microspheres-as-antimicrobial-delivery-systems-for-medical-applications
#3
J Szczeblinska, K Fijalkowski, J Kohn, M El Fray
In this paper, we present the preparation and antibiotic loading of polymeric microspheres, composed of copolymers derived from fatty acid/amino acid components, as new polymeric platforms for antibiotic delivery systems. New polymeric materials were used to prepare microspheres with and without immobilized model antibiotics (streptomycin, chloramphenicol and amphotericin B) by a W/O/W double-emulsion/solvent evaporation method, in which chloroform and poly(vinyl alcohol) are used as the solvent and emulsifier, respectively...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28531175/weekly-high-dose-liposomal-amphotericin-b-l-amb-in-critically-ill-septic-patients-with-multiple-candida-colonization-the-ambidex-study
#4
Elie Azoulay, Jean-François Timsit, Alexandre Lautrette, Stephane Legriel, Adeline Max, Stephane Ruckly, Benoit Misset, Yves Cohen, Michel Wolff
BACKGROUND: To demonstrate the feasibility and safety of weekly high-dose liposomal amphotericin B (L-AmB) (as a pre-emptive antifungal treatment) for 2 weeks in patients with septic shock and Candida colonization. METHODS: Pilot, multicentre, open-label, prospective study conducted in seven French ICUs. Non-immunocompromised patients, receiving mechanical ventilation were eligible if they presented ICU-acquired severe sepsis requiring newly administered antibacterial agents and Candida colonization in at least two sites...
2017: PloS One
https://www.readbyqxmd.com/read/28530163/gastrointestinal-histoplasmosis-a-case-series
#5
Rashi Sharma, Lipika Lipi, Smeeta Gajendra, Ishani Mohapatra, Ruchika K Goel, Rajan Duggal, Smruti Ranjan Mishra, Dheeraj Gautam
Histoplasmosis is an invasive mycosis caused by inhalation of the spores of dimorphic fungi Histoplasma capsulatum. The disease manifests in the lung as acute or chronic pulmonary histoplasmosis and in severe cases gets disseminated in multiple organs like skin, adrenal gland, central nervous system, lymph node, liver, spleen, bone marrow, and gastrointestinal tract. It occurs most commonly in immunodeficient patients like HIV-positive patients and transplant recipients, while immunocompetent hosts are affected rarely...
May 1, 2017: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28530056/-cutaneous-leishmaniasis-in-israel-2016-an-update
#6
REVIEW
Michal Solomon, Eli Schwartz
Leishmaniasis is endemic in Israel and is increasing in its frequency. The pathogens that cause cutaneous leishmaniasis (CL) in Israel are Leishmania major (L. major) and Leishmania tropica (L. tropica). In recent years, there have been significant changes in the distribution of these species. L. major is endemic mainly in the Negev, Arava and the Beit She'an Valley. L. tropica is endemic in Tiberias, northern Sea of Galilee, Samaria and in the vicinity of Jerusalem such as at Kfar Adumim, Ma'ale Adumim and Anathoth (north-east of Jerusalem)...
October 2016: Harefuah
https://www.readbyqxmd.com/read/28528250/antifungal-toxicity-of-linear-geranylphenol-influence-of-oxigenate-substituents
#7
Lautaro Taborga, Maximiliano Sortino, Carrasco Héctor, Estefanía Butassi, Susana Zacchino, Luis Espinoza
Twenty four linear geranylphenols were evaluated for their antifungal properties against ATCC and clinical isolates of Candida albicans and Cryptococcus neoformans. For the analysis of their antifungal behavior the compounds were grouped into two series: (i) compounds with only one geranyl substituent on the benzene ring and (ii) compounds with two geranyl moieties on the benzene ring. Results showed that compounds of series (i) present better antifungal activities than those of series (ii). In addition, within group (i) all compounds showed better activities against C...
May 17, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28527169/isolated-renal-mucormycosis
#8
R Sriranga, Satyajeet Pawar, Wasim Khot, Neeraj Nischal, Manish Soneja, H A Venkatesh, Ragesh R Nair, Raj Kanna, Mehar C Sharma, S K Sharma
Mucormycosis in humans has been described as early as 1885 in literature. Isolated renal mucormycosis is rare as it has been mainly described in developing countries like India and China. It is rarer still to find this entity in immunocompetent young males without any risk factors. Specific guidelines on the treatment is not yet known but combined surgical and medical therapy is considered the best modality for its management. We describe a young male who presented with bilateral hydroureteronephrosis. He was initially treated as a case renal tuberculosis which is relatively more common in TB endemic country like ours...
April 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/28526521/coexistence-of-aspergilloma-and-pulmonary-hydatid-cyst-in-an-immunocompetent-individual
#9
F Aala, H Badali, S Hashemi Fesharaki, M Boroumand, M Sotoudeh Anvari, H Davari, S Agha Kuchak Afshari, S Khodavaisy
Echinococcosis is a zoonotic disease caused by Echinococcus granulosus sensu lato. The liver and lungs are the most commonly sites of infections, but involvements of other organs were also observed. Recently, the coinfection of pulmonary hydatid cyst with aspergilloma has been reported in the literature. Herein, we report a successful treatment of coinfection of cystic echinoccosis with aspergilloma due to Aspergillus flavus in a 34-year-old female. In vitro antifungal susceptibility tests revealed that the MIC values for antifungals employed in this case were posaconazole (0...
May 16, 2017: Journal de Mycologie Médicale
https://www.readbyqxmd.com/read/28525619/epidemiology-and-clinical-characteristics-of-invasive-mould-infections-a-multicenter-retrospective-analysis-in-five-asian-countries
#10
R Porpon, Y C Chen, A Chakrabarti, R Y Li, R M Shivaprakash, J Yu, H C Kung, S Watcharananan, A L Tan, S E Saffari, B H Tan
Formal, large-scale, multicenter studies of invasive mould infection (IMI) in Asia are rare. This 1-year, retrospective study was designed to assess the incidence and clinical determinants of IMI in centers in five countries (Thailand, Taiwan, Singapore, China, India). Patients treated in a single year (2012) were identified through discharge diagnoses, microbiology, and histopathology logs, and entered based on published definitions of IMI. A total of 155 cases were included (median age 54 years; 47.7% male)...
May 19, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/28524774/cytotoxicity-and-anti-leishmania-amazonensis-activity-of-citrus-sinensis-leaf-extracts
#11
Andreza R Garcia, Ana Claudia F Amaral, Mariana M B Azevedo, Suzana Corte-Real, Rosana C Lopes, Celuta S Alviano, Anderson S Pinheiro, Alane B Vermelho, Igor A Rodrigues
CONTEXT: Leishmania amazonensis is the main agent of diffuse cutaneous leishmaniasis, a disease characterized by lesional polymorphism and the commitment of skin surface. Previous reports demonstrated that the Citrus genus possess antimicrobial activity. OBJECTIVE: This study evaluated the anti-L. amazonensis activity of Citrus sinensis (L.) Osbeck (Rutaceae) extracts. MATERIALS AND METHODS: Citrus sinensis dried leaves were subjected to maceration with hexane (CH), ethyl acetate (CEA), dichloromethane/ethanol (CD/Et - 1:1) or ethanol/water (CEt/W - 7:3)...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/28523894/primary-cutaneous-mucormycosis-in-an-extremely-preterm-infant-successfully-treated-with-liposomal-amphotericin-b
#12
Christopher D Lowe, Rebecca J Sainato, David R Stagliano, Maribel M Morgan, Brian P Green
Cutaneous mucormycosis is a rare but often fatal invasive fungal infection that occurs most commonly in patients with diabetes, malignancy, and other immunocompromising conditions. We report an extremely preterm (<28 weeks) baby boy who developed polymicrobial sepsis and primary cutaneous mucormycosis within his first 10 days of life. He was successfully treated with medical management alone since he was not a candidate for surgery. Successful treatment of cutaneous mucormycosis without surgical debridement has been reported on only two other occasions...
May 2017: Pediatric Dermatology
https://www.readbyqxmd.com/read/28515716/antifungal-activity-of-the-biphosphinic-cyclopalladate-c7a-against-candida-albicans-yeast-forms-in-vitro-and-in-vivo
#13
Julian E Muñoz, Diego C P Rossi, Kelly Ishida, Cristina C Spadari, Marcia S C Melhem, Daniel M Garcia, Antonio C F Caires, Carlos P Taborda, Elaine G Rodrigues
Vulvovaginal and invasive candidiasis are frequent conditions in immunosuppressed individuals caused by Candida albicans and non-albicans Candida spp. Fluconazole and Amphotericin B are the main drugs used to fight the infection. However, resistance to fluconazole and other azole antifungal drugs is an important clinical problem that encourages the search for new therapeutic alternatives. In this work, we evaluate the antifungal activity of the biphosphinic cyclopalladate C7a in the in vitro and in vivo model...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28513771/species-distribution-and-antifungal-susceptibility-patterns-of-candida-isolates-from-a-public-tertiary-teaching-hospital-in-the-eastern-cape-province-south-africa
#14
P Mnge, B I Okeleye, S D Vasaikar, T Apalata
Candida species are the leading cause of invasive fungal infections, and over the past decade there has been an increased isolation of drug resistant Candida species. This study aimed to identify the species distribution of Candida isolates and to determine their unique antifungal susceptibility and resistance patterns. During a cross-sectional study, 209 Candida isolates (recovered from 206 clinical samples) were collected and their species distribution was determined using ChromAgar Candida. The Vitek-2 system (Biomerieux, South Africa) was used to determine minimum inhibitory concentrations (MICs) to azoles (fluconazole, voriconazole), echinocandins (caspofungin, micafungin), polyenes (amphotericin B) and flucytosine...
May 15, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28510690/trichosporonosis-in-pediatric-patients-with-a-hematologic-disorder
#15
Catherine E Foster, Morven S Edwards, Julienne Brackett, Deborah A Schady, C Mary Healy, Carol J Baker
Background.: Trichosporonosis is an emerging and often fatal opportunistic fungal infection in immunocompromised patients, particularly those with hematologic malignancy, but data in children are lacking. Methods.: We report here 3 cases of invasive infection caused by Trichosporon asahii in pediatric patients with acute lymphoblastic leukemia at Texas Children's Hospital in Houston, Texas. We also conducted a literature review and identified 16 additional reports of pediatric patients with invasive T asahii infection and an underlying malignant or nonmalignant hematologic disorder...
May 16, 2017: Journal of the Pediatric Infectious Diseases Society
https://www.readbyqxmd.com/read/28507113/efficacy-of-a-binuclear-cyclopalladated-compound-therapy-for-cutaneous-leishmaniasis-in-the-murine-model-of-infection-with-leishmania-amazonensis-and-its-inhibitory-effect-on-topoisomerase-1b
#16
Angela Maria Arenas Velásquez, Willian Campos Ribeiro, Vutey Venn, Silvia Castelli, Mariana Santoro, Renata Pires de Assis, Rodrigo Alves de Souza, Aline Rimoldi Ribeiro, Thaís Gaban Passalaqua, João Aristeu da Rosa, Amanda Martins Baviera, Antonio Eduardo Mauro, Alessandro Desideri, Elmo Eduardo Almeida-Amaral, Marcia A S Graminha
Leishmaniasis is a disease found throughout the (sub)tropical parts of the world caused by protozoan parasites of the Leishmania genus. Despite the numerous problems associated with existing treatments, pharmaceutical companies continue to neglect the development of better ones. The high toxicity of current drugs combined with emerging resistance makes the discovery of new therapeutic alternatives urgent. Here we report the evaluation of a binuclear cyclopalladated complex containing Pd(II) and N,N' -dimethylbenzylamine (Hdmba) against Leishmania amazonensis...
May 15, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28506251/diversity-in-vitro-virulence-traits-and-antifungal-susceptibility-pattern-of-gastrointestinal-yeast-flora-of-healthy-poultry-gallus-gallus-domesticus
#17
Supram Hosuru Subramanya, Nawal Kishor Sharan, Bharat Prasad Baral, Deependra Hamal, Niranjan Nayak, Peralam Yegneswaran Prakash, Brijesh Sathian, Indira Bairy, Shishir Gokhale
BACKGROUND: Poultry farming and consumption of poultry (Gallus gallus domesticus) meat and eggs are common gastronomical practices worldwide. Till now, a detailed understanding about the gut colonisation of Gallus gallus domesticus by yeasts and their virulence properties and drug resistance patterns in available literature remain sparse. This study was undertaken to explore this prevalent issue. RESULTS: A total of 103 specimens of fresh droppings of broiler chickens (commercial G domesticus) and domesticated chickens (domesticated G domesticus) were collected from the breeding sites...
May 15, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28505185/combined-treatment-of-miltefosine-and-paromomycin-delays-the-onset-of-experimental-drug-resistance-in-leishmania-infantum
#18
Sarah Hendrickx, Magali Van den Kerkhof, Dorien Mabille, Paul Cos, Peter Delputte, Louis Maes, Guy Caljon
BACKGROUND: Since miltefosine monotherapy against visceral leishmaniasis (VL) caused by Leishmania donovani has been discontinued in the Indian subcontinent due to an increase in the number of treatment failures, single dose liposomal amphotericin B is now advocated as a treatment option of choice. Paromomycin-miltefosine combination therapy can be used as substitute first-line treatment in regions without cold-chain potential. Previous laboratory studies in the closely related species Leishmania infantum have demonstrated that paromomycin monotherapy fairly rapidly selects for resistance producing a phenotype with increased fitness...
May 15, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28505035/invasive-fungal-sinusitis-treatment-of-the-orbit
#19
Evan Kalin-Hajdu, Kristin E Hirabayashi, M Reza Vagefi, Robert C Kersten
PURPOSE OF REVIEW: To summarize diagnostic techniques for invasive fungal rhinosinusitis and provide a review of treatment options once disease has spread to the orbit. RECENT FINDINGS: Improved imaging criteria, polymerase chain reaction and other serologic tests show promise in advancing our ability to accurately diagnose invasive fungal disease. Currently, there exists three treatment options for infected orbital tissue: exenteration, conservative debridement and transcutaneous retrobulbar injection of amphotericin B...
May 12, 2017: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/28503064/combined-intrastromal-injection-of-amphotericin-b-and-topical-fluconazole-in-the-treatment-of-resistant-cases-of-keratomycosis-a-retrospective-study
#20
Waled Mahdy Nada, Mahmoud A Al Aswad, Wael M El-Haig
PURPOSE: To evaluate the efficacy of combination therapy of a single intrastromal injection of amphotericin B and topical fluconazole in resistant cases of fungal keratitis, and also topical amphotericin B as monotherapy in terms of the duration of the recovery period and toxic drug effects. METHODS: This retrospective 2-year study reviewed 68 cases of unilateral fungal keratitis diagnosed by clinical features and positive laboratory culture results. Forty-one cases were resistant and did not respond to monotherapy with an antifungal agent...
2017: Clinical Ophthalmology
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