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https://www.readbyqxmd.com/read/29166538/antimicrobial-photodynamic-therapy-associated-with-conventional-endodontic-treatment-a-clinical-and-molecular-microbiological-study
#1
Caroline C da Silva, Sérgio P Chaves Júnior, Gabriela L D Pereira, Karla B F C da Fontes, Lívia A A Antunes, Helvécio C C Póvoa, Leonardo S Antunes, Natalia L P Póvoa Iorio
This study evaluated antimicrobial photodynamic therapy (aPDT) as an adjunct to endodontic treatment. Ten uniradicular teeth (control group (CG)= 4 (2 and test group (TG)= 6) with primary endodontic infections, from both genders, between 17 and 65 years old, were analyzed. Microbiological samples were collected before and after chemical-mechanical instrumentation (CMI), after aPDT (for the TG), and after the removal of the temporary restorations (second session). In TG, the aPDT was performed with 100 μg/mL methylene blue and irradiated with low power laser (InGaAIP, 660 nm; 100 mW; 40 sec) with a fiber-coupled optical laser...
November 22, 2017: Photochemistry and Photobiology
https://www.readbyqxmd.com/read/29164434/isolated-cutaneous-granuloma-caused-by-candida-glabrata-a-rare-case-report-and-literature-review
#2
REVIEW
Yibin Fan, Weili Pan, Guizhen Wang, Youming Huang, Yali Li, Wei Fang, Xiaohua Tao
The incidence of candidiasis due to non-albicans Candida species (especially Candida glabrata) has significantly increased in recent decades. Candida glabrata often invades immunocompromised hosts and causes systemic or mucosal infections, whereas cutaneous infections are rarely reported. We present a rare case of cutaneous infection caused by C. glabrata and review all similar cases available in the PubMed database. A patient was admitted to the hospital with a 2-month history of a plaque on the face. Histopathological examination displayed typical infectious granulomas in the deep dermis, and the pathogen was finally confirmed as C...
November 22, 2017: Mycopathologia
https://www.readbyqxmd.com/read/29163396/synergistic-antifungal-effect-of-fluconazole-combined-with-licofelone-against-resistant-candida-albicans
#3
Xinning Liu, Tao Li, Decai Wang, Yilei Yang, Wenwen Sun, Jianqiao Liu, Shujuan Sun
Candida albicans (C. albicans) is one of the important opportunistic fungal pathogens that is closely associated with disseminated or chronic infections. The objective of this study is to evaluate the synergistic antifungal effect of licofelone, which is dual microsomal prostaglandin E2 synthase/lipoxygenase (mPGES-1/LOX) inhibitor in combination with fluconazole against C. albicans. Here our results showed that licofelone (16 μg/mL) can synergistically work with fluconazole (1 μg/mL) against planktonic cells of fluconazole-resistant C...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29162360/sleep-disordered-breathing-in-heart-failure-the-state-of-the-art-after-the-serve-hf-trial
#4
REVIEW
João Carmo, Inês Araújo, Filipa Marques, Cândida Fonseca
Heart failure (HF) is one of the most prevalent conditions worldwide and despite therapeutic advances, its prognosis remains poor. Among the multiple comorbidities in HF, sleep-disordered breathing (SDB) is frequent and worsens the prognosis. Preliminary observational studies suggested that treatment of SDB could modify the prognosis of HF, and the issue has gained importance in recent years. The diagnosis of SDB is expensive, slow and suboptimal, and there is thus a need for screening devices that are easier to use and validated in this population...
November 18, 2017: Portuguese Journal of Cardiology: An Official Journal of the Portuguese Society of Cardiology
https://www.readbyqxmd.com/read/29161434/designing-a-mutant-candida-uricase-with-improved-polymerization-state-and-enzymatic-activity
#5
Lei Tao, Dandan Li, Yonghong Li, Xinchang Shi, Junzhi Wang, Chunming Rao, Yingqi Zhang
As human uricase has been silenced during evolution, counterparts from other species become an alternative for the treatment of hyperuricemia. Candida uricase is a promising option among them, but its aggregation propensity remains a major obstacle to clinical use. In this study, we designed two mutations according to homology-modeled 3D structure of Candida uricase: Cys249Ser substitution and C-terminal Leu deletion. The wild-type uricase and three mutants containing either or both of the mutations were expressed in Escherichiacoli BL21 and validated by mass spectrometry...
November 17, 2017: Protein Engineering, Design & Selection: PEDS
https://www.readbyqxmd.com/read/29160517/prevalence-and-antibiogram-of-methicillin-resistant-staphylococcus-aureus-isolated-from-medical-device-related-infections-a-retrospective-study-in-lahore-pakistan
#6
Muhammad Sohail, Zakia Latif
INTRODUCTION: With the advancement of medicine and surgery, various types of medical devices have become part of treatment strategies. METHODS: Identification and antimicrobial sensitivity testing were done according to CLSI guidelines following standard microbiological practices. RESULTS: Urinary catheter infections (31%) were most frequent followed by central venous catheter (18%) and orthopedic implants (15%). Methicillin resistant Staphylococcus aureus (MRSA) was a major cause of device-related infection after Escherichia coli (21%); other pathogens were Klebsiella pneumoniae (14%), Pseudomonas spp...
September 2017: Revista da Sociedade Brasileira de Medicina Tropical
https://www.readbyqxmd.com/read/29157011/reactive-oxygen-species-modulate-itraconazole-induced-apoptosis-via-mitochondrial-disruption-in-candida-albicans
#7
Wonjong Lee, Dong Gun Lee
Itraconazole (ITC), a well-known fungistatic agent, has potent fungicidal activity against Candida albicans. However, its mechanism of fungicidal activity has not been elucidated yet, and we aimed to identify the mechanism of ITC against C. albicans. ITC caused cell shrinkage via potassium leakage though the ion channel. Since shrunken cells could indicate apoptosis, we investigated apoptotic features. Annexin V-FITC and TUNEL assays indicated that fungicidal activity of ITC was involved in apoptosis. Subsequently, we confirmed an intracellular factor that could cause apoptosis...
November 20, 2017: Free Radical Research
https://www.readbyqxmd.com/read/29156526/combined-use-of-insoluble-%C3%AE-glucan-from-the-cell-wall-of-candida-albicans-and-cyclophosphamide-validation-in-s180-tumor-bearing-mice
#8
Yan Qi, Xin Hu, Jin Cui, Jing Chen, Qian Wu, Xiao Sun, Yan Shi
BACKGROUND: Cyclophosphamide (CTX) is a widely used antitumor drug that can suppress the immune system. The effects of regulating immune response and antitumor of β-glucan from the cell wall of Candida albicans (CAIBG) have been confirmed. However, the effects of the combined use of CAIBG and CTX remain unclear and warrant further investigation. METHODS: S180 tumor-bearing models were developed for CAIBG (100 mg/10 mL/kg) and CTX (30 mg/10 mL/kg) intervention...
November 15, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29155403/phyto-assisted-synthesis-of-bio-functionalised-silver-nanoparticles-and-their-potential-anti-oxidant-anti-microbial-and-wound-healing-activities
#9
Yugal Kishore Mohanta, Kunal Biswas, Sujogya Kumar Panda, Jaya Bandyopadhyay, Debashis De, Rasu Jayabalan, Akshaya Kumar Bastia, Tapan Kumar Mohanta
Bio- synthesis of silver nanoparticles (AgNPs) was made by using the aqueous leaf extract of Ardisia solanacea. Rapid formation of AgNPs was observed from silver nitrate upon treatment with the aqueous extract of A. solanacea leaf. The formation and stability of the AgNPs in the colloidal solution were monitored by UV-visible spectrophotometer. The mean particle diameter of AgNPs was calculated from the DLS with an average size ∼4 nm and ∼65 nm. ATR-FTIR spectroscopy confirmed the presence of alcohols, aldehydes, flavonoids, phenols and nitro compounds in the leaf which act as the stabilizing agent...
December 2017: IET Nanobiotechnology
https://www.readbyqxmd.com/read/29154044/modulating-host-immune-responses-to-fight-invasive-fungal-infections
#10
REVIEW
James E Scriven, Mark W Tenforde, Stuart M Levitz, Joseph N Jarvis
Modulation of host immunity in invasive fungal infection is an appealing but as yet mostly elusive treatment strategy. Animal studies in invasive candidiasis and aspergillosis have demonstrated beneficial effects of colony stimulating factors, interferon-gamma and monoclonal antibodies. More recent studies transfusing leukocytes pre-loaded with lipophilic anti-fungal drugs, or modulated T-cells, along with novel vaccination strategies show great promise. The translation of immune therapies into clinical studies has been limited to date but this is changing and the results of new Candida vaccine trials are eagerly awaited...
November 15, 2017: Current Opinion in Microbiology
https://www.readbyqxmd.com/read/29153071/-mycoviruses-and-importance-in-mycology
#11
Sema Aşkın Keçeli
Opportunistic fungal infections like invasive candidiasis and aspergillozis have high mortality rate particularly in immunosupressive patients. The rate of therapy success with antifungal agents is usually low. Although immunotherapy methods have been developed to increase the host response against antifungals, there has been a need for new antifungal therapeutic agents in the treatment of invasive aspergillozis and other opportunistic fungal infections. Mycoviruses are the viruses that specifically infect fungi...
October 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/29148425/ex-vivo-inhibited-cytokine-profiling-explains-inferior-treatment-response-to-golimumab-after-adalimumab-failure-in-rheumatoid-arthritis
#12
Lieke Tweehuysen, Kiki Schraa, Mihai G Netea, Frank H J van den Hoogen, Leo A B Joosten, Alfons A den Broeder
OBJECTIVES: Clinical data suggest that the response of rheumatoid arthritis patients to treatment with golimumab is much lower among those who switched from adalimumab than among those who switched from etanercept. To elucidate the mechanism behind this difference in response to sequential biologic treatment, we examined the effect of TNF inhibitors on ex vivo cytokine production profiling. METHODS: In a prospective cohort study, blood samples were obtained from patients before the start of a biologic...
October 18, 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/29143931/antioxidant-enzyme-activities-of-folsomia-candida-and-avoidance-of-soil-metal-contamination
#13
Wencai Dai, Xin Ke, Zhu Li, Ming Gao, Longhua Wu, Peter Chiristie, Yongming Luo
Induction of the antioxidant enzymes catalase (CAT), peroxidase (POD) and superoxide dismutase (SOD) and the avoidance of potentially toxic metals in soil by Folsomia candida were investigated. Both laboratory-spiked and field-polluted agricultural soils were used. Cadmium (Cd) concentrations in body tissues, animal avoidance behaviour and physico-chemical properties of the field soils were also determined. In laboratory Cd-spiked soils, the CAT and SOD activities in the Cd treatments were 71.1-94.7 and 1.31-4...
November 16, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29143452/engineering-improved-variants-of-the-antifungal-peptide-histatin-5-with-reduced-susceptibility-to-candida-albicans-secreted-aspartic-proteases-and-enhanced-antimicrobial-potency
#14
Svetlana P Ikonomova, Parisa Moghaddam-Taaheri, Mary Ann Jabra-Rizk, Yan Wang, Amy J Karlsson
Candida albicans is an opportunistic fungal pathogen and a commensal organism that commonly colonizes mucosal surfaces, including those inside the human mouth. To help control C. albicans, human saliva contains the antifungal peptide histatin 5 (Hst-5), which has strong antifungal activity against C. albicans. However, the pathogen produces secreted aspartic proteases (Saps) that cleave Hst-5 at lysine residues and eliminate its antifungal properties. We designed variants of Hst-5 with its lysine residues substituted with arginine or leucine to evaluate the effect on proteolysis by Saps...
November 15, 2017: FEBS Journal
https://www.readbyqxmd.com/read/29143238/yeasts-and-bacterial-biosurfactants-as-demulsifiers-for-petroleum-derivative-in-seawater-emulsions
#15
Fernanda Cristina P Rocha E Silva, Bruno Augusto C Roque, Nathalia Maria P Rocha E Silva, Raquel D Rufino, Juliana M Luna, Valdemir A Santos, Ibrahim M Banat, Leonie A Sarubbo
Oil sludge or waste generated in transport, storage or refining forms highly stable mixtures due to the presence and additives with surfactant properties and water forming complex emulsions. Thus, demulsification is necessary to separate this residual oil from the aqueous phase for oil processing and water treatment/disposal. Most used chemical demulsifiers, although effective, are environmental contaminants and do not meet the desired levels of biodegradation. We investigated the application of microbial biosurfactants as potential natural demulsifiers of petroleum derivatives in water emulsions...
November 15, 2017: AMB Express
https://www.readbyqxmd.com/read/29142411/the-effect-of-polyherbal-medicines-used-for-the-treatment-of-tuberculosis-on-other-opportunistic-organisms-of-humans-infected-with-tuberculosis
#16
Elizabeth Bosede Famewo, Anna Maria Clarke, Anthony Jide Afolayan
Background: In many immunocompromised patients, opportunistic bacterial and fungal infections are common. Polyherbal medicines examined in this study are used by the indigenous people of South Africa for the treatment of tuberculosis (TB) and other opportunistic infections associated with TB. Objective: To evaluate the antibacterial and antifungal activity of nine polyherbal remedies against four Gram-positive and Gram-negative bacteria respectively and three fungi...
October 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/29141400/antifungal-treatment-with-echinocandins-a-10-year-clinical-experience
#17
R Poves-Alvarez, B Cano-Hernández, S Balbás-Alvarez, P Román-García, M Heredia-Rodríguez, E Gómez-Sánchez, E Gómez-Pesquera, M Lorenzo-López, B Martínez-Rafael, M F Muñoz-Moreno, J M Eiros, E Tamayo
OBJECTIVE: The number of studies evaluating the use of echinocandins, whether or not its indication meets international guidelines, in clinical practice is limited. The objective of the present study was to determine the use of echinocandins in a tertiary Spanish hospital in 10 years of clinical practice, and to evaluate its impact on prognosis. METHODS: This retrospective study involved adult nonneutropenic ill patients with suspicion of fungal invasion who started treatment with echinocandins between 2006 and 2015...
November 10, 2017: Revista Española de Quimioterapia: Publicación Oficial de la Sociedad Española de Quimioterapia
https://www.readbyqxmd.com/read/29141316/-a-clinical-analysis-of-micafungin-treatment-of-pulmonary-invasive-fungal-infection-in-pediatric-patients-with-acute-leukemia-or-post-hematopoietic-stem-cells-transplantation
#18
K Huang, K Y Qiu, L L Deng, J P Fang, Y Li, H X Guo, D H Zhou
Objective: To investigate the efficacy and safety of micafungin (MCF) for pulmonary invasive fungal disease (PIFD) in pediatric patients with acute leukemia or post hematopoietic stem cells transplantation. Method: Twenty-five neutropenic PIFD children with acute leukemia or post hematopoietic stem cells transplantation in Sun Yat-sen Memorial Hospital of Sun Yat-sen University were selected from January 2012 to June 2015, including 12 males and 13 females, age range 2-15 (average 6.2±2.0) years. There were 12 cases of acute leukemia (AL) after chemotherapy, 4 cases of acute leukemia (AL) after allogeneic hematopoietic stem cell transplantation (allo-HSCT) and 9 cases of β-thalassemia major after allo-HSCT...
November 2, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/29138104/novel-mixed-vesicles-containing-lactobacilli-biosurfactant-for-vaginal-delivery-of-an-anti-candida-agent
#19
Angela Abruzzo, Barbara Giordani, Carola Parolin, Beatrice Vitali, Michele Protti, Laura Mercolini, Martina Cappelletti, Stefano Fedi, Federica Bigucci, Teresa Cerchiara, Barbara Luppi
The purpose of this work was to prepare and characterize an innovative formulation for vaginal delivery of econazole nitrate, commonly used for the treatment of Candida infections. A novel biosurfactant isolated from a vaginal Lactobacillus strain was used to prepare phosphatidylcholine based mixed vesicles. Biosurfactant was produced by Lactobacillus gasseri BC9, isolated from the vagina of a healthy premenopausal woman, and was chemically characterized by FT-IR and ESI-MS. Mixed vesicles, obtained through film rehydration and extrusion method, were characterized in terms of size, zeta potential, encapsulation efficiency, mucoadhesion properties and econazole release...
November 11, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29137671/herpes-simplex-virus-1-entrapped-in-candida-albicans-biofilm-displays-decreased-sensitivity-to-antivirals-and-uva1-laser-treatment
#20
Cristian Ascione, Arianna Sala, Elham Mazaheri-Tehrani, Simona Paulone, Beniamino Palmieri, Elisabetta Blasi, Claudio Cermelli
BACKGROUND: Recently, we published data suggesting a mutualistic relationship between HSV-1 and Candida. albicans; in particular: (a) HSV-1 infected macrophages are inhibited in their anti-Candida effector function and (b) Candida biofilm protects HSV-1 from inactivation. The present in vitro study is aimed at testing the effects of Candida biofilm on HSV-1 sensitivity to pharmacological and physical stress, such as antiviral drugs (acyclovir and foscarnet) and laser UVA1 irradiation...
November 14, 2017: Annals of Clinical Microbiology and Antimicrobials
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