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1.
Francieli Chassot Tarcieli Pozzebon Venturini Fernanda Baldissera Piasentin Janio Morais Santurio Terezinha Inez Estivalet Svidzinski Sydney Hartz Alves 《Revista iberoamericana de micología》2019,36(1):44-47
Background
Candida parapsilosis may acquire resistance to echinocandins, a fact that prompts the search for new therapeutic options.Aims
The present study aimed to evaluate the in vitro activity of antifungal agents, alone and in combination, against four groups of C. parapsilosis strains: (1) echinocandin-susceptible (ES) clinical isolates (MIC ≤ 2 μg/ml), (2) anidulafungin-resistant strains (MIC ≥ 8 μg/ml), (3) caspofungin-resistant strains (MIC ≥ 8 μg/ml), and (4) micafungin-resistant strains (MIC ≥ 8 μg/ml).Methods
Antifungal interactions were evaluated by a checkerboard micro-dilution method. The determination of the MIC to each drug for every isolate according to the Clinical and Laboratory Standards Institute documents M27 (2017) and M60 (2017) was also done.Results
The echinocandins-resistant (ER) strains showed higher MICs to the tested antifungals than the ES strains, except for amphotericin B, for which the ER groups remained susceptible.Conclusions
Most combinations showed indifferent interactions. The use of monotherapy still seems to be the best option. As resistance to echinocandins is an emergent phenomenon, further studies are required to provide clearer information on the susceptibility differences between strains to these antifungal agents. 相似文献2.
Alba Pérez-Cantero Pamela Thomson Katihuska Paredes Josep Guarro Javier Capilla 《Revista iberoamericana de micología》2019,36(1):37-40
Background
The incidence of systemic infections by Saccharomyces cerevisiae has increased in recent years, especially among immunocompromised patients. Amphotericin B, voriconazole or echinocandins have been used with favorable outcome against systemic infections by this fungus. However, clinical experience is limited and no in vivo studies have been conducted.Aims
We evaluated the in vitro activity of nine antifungal compounds against S. cerevisiae and the in vivo efficacy of those three antifungals showing the highest in vitro activity by using a murine model of systemic infection.Methods
Minimal inhibitory concentrations (MICs) were determined by the microdilution method against three strains of S. cerevisiae. After intravenous infection with 5 × 107 CFUs, animals received liposomal amphotericin B (5 mg/kg), voriconazole (25 mg/kg) or anidulafungin (5 mg/kg). Treatment efficacy was assessed by determining of CFUs/g in liver, kidney, brain, lung and spleen.Results
5-Fluorocytosine was the most in vitro active compound followed by amphotericin B, voriconazole and anidulafungin. The in vivo study showed that liposomal amphotericin B was the most effective drug driving highest fungal clearance.Conclusions
All treatments reduced the fungal load in comparison to the control group, being liposomal amphotericin B the most effective drug followed by anidulafungin and finally voriconazole. 相似文献3.
Giulia Carrano Simona Paulone Lucía Lainz María-Jesús Sevilla Elisabetta Blasi María-Dolores Moragues 《Revista iberoamericana de micología》2019,36(1):9-16
Background
Invasive candidiasis by Candida albicans is associated with high morbidity and mortality, due in part to the late implementation of an appropriate antifungal therapy hindered by the lack of an early diagnosis.Aims
We aimed to evaluate the in vitro antifungal activity of the antibodies against C. albicans germ tubes (CAGTA) raised in a rabbit model of candidemia.Methods
We measured the effect of CAGTA activity by colorimetric XTT and crystal violet assays, and colony forming units count, both on C. albicans planktonic cells and during the course of biofilm formation and maturation. Viability and cell morphology were assessed by optical, fluorescent or scanning electron microscopy.Results
CAGTA ≥50 μg/ml caused a strong inhibition of C. albicans blastospores growth, and DiBAC fluorescent staining evidenced a fungicidal activity. Moreover, electron microscopy images revealed that CAGTA induced morphological alterations of the surface of C. albicans germ tubes grown free as well as in biofilm. Interestingly, CAGTA ≥80 μg/ml reduced the amount of C. albicans biofilm, and this effect started at the initial adhesion stage of the biofilm formation, during the first 90 min.Conclusions
This is the first report showing that CAGTA reduce C. albicans growth, and impair its metabolic activity and ability to form biofilm in vitro. The antigens recognized by CAGTA could be the basis for the development of immunization protocols that might protect against Candida infections. 相似文献4.
Sandeep Kumar Vishwakarma Avinash Bardia L. Chandrakala Sana Arshiya Syed Ameer Basha Paspala Vishnupriya Satti Aleem Ahmed Khan 《Tissue & cell》2017,49(6):638-647
Introduction
Progress in understanding pathophysiological mechanisms and the development of targeted regenerative strategies have been hampered by the lack of predictive disease models, specifically for the conditions to which affected cell types are inaccessible. The present study has aimed to unearth the role of valproic acid (VPA) and mild hypothermia (MH) as promising strategy to enhance the neuroprotective mechanisms in undifferentiated and differentiated human neural precursor cells (hNPCs) against ethanol-induced damage.Methods
5 mM VPA alone or in combination with MH (33 °C) was used to prevent the damage in proliferating and differentiating hNPCs. CD133 + ve enriched hNPCs were cultured in vitro and exposed to 1 M chronic ethanol concentration for 72 h and followed by VPA and MH treatment for 24 h. Morphometric analysis was performed to identify changes in neurospheres development and neuronal cell phenotypes. Flow cytometry and RT-qPCR analysis was performed to investigate alterations in key molecular pathways involved in cell survival and signaling.Results
Combination of VPA with MH displayed higher proportion of neuronal cell viability as compared to single treatment. Combination treatment was most effective in reducing apoptosis and reactive oxygen species levels in both the undifferentiated and differentiated hNPCs. VPA with MH significantly improved neuronal cell phenotype, active chromatin modeling, chaperon and multi-drug resistant pumps activity and expression of neuronal signaling molecules.Conclusion
The study provided an efficient and disease specific in vitro model and demonstrated that combined treatment with VPA and MH activates several neuroprotective mechanisms and provides enhanced protection against ethanol-induced damage in cultured undifferentiated and differentiated hNPCs. 相似文献5.
6.
Blanca Rosales-Acosta Aarón Mendieta Clara Zúñiga Joaquín Tamariz César Hernández Rodríguez José Antonio Ibarra-García Lourdes Villa-Tanaca 《Revista iberoamericana de micología》2019,36(1):1-8
Background
The enzyme 3-hydroxy-3-methylglutaryl coenzyme A reductase (Hmgr) catalyzes the synthesis of mevalonate, a key compound for the synthesis of cholesterol in humans and ergosterol in fungi. Since the Hmgr enzymes of Saccharomyces cerevisiae, Schizosaccharomyces pombe and Candida glabrata are similar to the Hmgr enzymes of mammals, fungal Hmgr enzymes have been proposed as a model for studying antifungal agents.Aims
To examine the correlation between inhibiting Um-Hmgr enzyme and the viability, sterols synthesis and mating in Ustilago maydis.Methods
Using in silico analysis, the ORF codifying for Um-Hmgr was identified and the protein characteristics were deduced. The effect of the competitive inhibitors of Um-Hmgr on the viability of this basidiomycota, the synthesis of its sterols, and its mating were evaluated.Results
The Umhmgr gene (XP_011389590.1) identified putatively codifies a protein of 1443 aa (ca. MW = 145.5 kDa) that has a possible binding domain in the endoplasmic reticulum (ER) and high identity with the Hmgr catalytic domain of humans and other yeasts. The inhibition of Um-Hmgr caused a decrease of viability and synthesis of sterols, and also the inhibition of mating. The activity of Um-Hmgr is mainly located in the membrane fraction of the fungus.Conclusions
Given our results we believe U. maydis is a valid model for studying synthetic inhibitors with lipid-lowering or antifungal activity. Additionally, we propose the Hmgr enzyme as an alternative molecular target to develop compounds for treating both phytopathogenic and pathogenic human fungi. 相似文献7.
Objective
Gentamicin (GM) is an effective antibiotic against severe infection but has limitations related to nephrotoxicity. In this study, we investigated whether benfotiamine (BFT) and coenzyme Q10 (CoQ10), could ameliorate the nephrotoxic effect of GM in rats.Methods
Rats were divided into five groups. Group 1 and 2 served as control and sham respectively, Group 3 as GM group, Group 4 as GM + CoQ10 and Group 5 as GM + BFT for 8 days. At the end of the study, all rats were euthanized by cervical decapitation and then blood samples and kidneys were collected for further analysis. Serum urea, creatinine, cytokine TNF-a, oxidant and antioxidant parameters, as well as histopathological examination of kidney tissues were assessed.Results
Gentamicin administration caused a severe nephrotoxicity which was evidenced by an elevated serum creatinine, urea and KIM-1 level as compared with the controls. Moreover, a significant increase in serum malondialdehyde, reduced glutathione. Histopathological examination of renal tissue in gentamisin administered group, there were extremly pronounced necrotic tubules in the renal cortex and hyalen cast accumulation in the medullar tubuli. BFT given to GM rats reduced these nephrotoxicity parameters. Serum creatinine, urea, and KIM-1 were almost normalized in the GM + BFT group. Benfotiamin treatment was significantly decreased necrotic tubuli and hyalen deposition in gentamisin plus benfotiamin group. CoQ10 given to GM rats did not cause any statistically significant alterations in these nephrotoxicity parameters when compared with GM group but histopathological examination of renal tissue in GM + CoQ10 administered group, CoQ10 treatment was decreased necrotic tubuli rate and hyalen accumulation in tubuli.Conclusion
The results from our study indicate that BFT supplement attenuates gentamicin-induced renal injury via the amelioration of oxidative stress and inflammation of renal tubular cells. 相似文献8.
Eliana Patricia Dueñas Liliana Patricia Ramírez Elizabeth Ponce Carmen Lucía Curcio 《Revista espa?ola de geriatría y gerontología》2019,54(2):68-74
Introduction
The fear of falling has a high prevalence in the community, and intervention programs for this condition are scarce, making it is necessary to strengthen this type of therapy in order to prevent adverse consequences in the elderly population.Objective
To establish the effectiveness of three intervention programs in reducing the fear of falling and increasing functionality in elderly people in the city of Manizales.Participants and methods
A randomised trial was conducted on ambulatory elderly patients with fear of falling and functional limitation of the city of Manizales. A total of 125 individuals were randomised to one of three interventions: Tai Chi (TCh), cognitive behavioural therapy (CBT), and postural control (CP) exercises. The primary outcomes were: fear of falling (evaluated by the Falls Efficacy Scale [FES-I]), and functionality using the Short Physical Performance Battery (SPPB). The data was collected before initiating the interventions and after the 8 weeks intervention.Results
An intention-to-treat analysis was conducted on 119 elderly patients. The three interventions reduced the fear of falling and increased physical performance, with no significant differences observed between them (P = .13). As regards gait speed, differences were only found between the pre- and post-intervention with CP (P < .001).Conclusions
The results suggest that the TCh, CBT and CP interventions helped the elderly to reduce their fear of falling. Only CP demonstrated an improvement in the speed of walking at the end of the eight weeks of intervention (identifier NCT03211429). 相似文献9.
Juan Ignacio González-Montalvo Coro Mauleón Ladrero Rocío Menéndez-Colino Sara Hernández-Gutiérrez Raquel Ramírez-Martín Macarena Díaz-de Bustamante Francisco Sanz Segovia Francisco Robles Agudo Teresa Alarcón Alarcón 《Revista espa?ola de geriatría y gerontología》2019,54(2):94-98
Introduction
Hospital occupancy rate by older patients is high, and it will be even higher in the future. Their hospital stay is usually longer, making it important for hospitals to develop structures with the best efficiency possible.Method
Hospital discharges of patients older than 75 years with the 15 most frequent Diagnosis-Related Groups (DRG) in Geriatrics were recorded during a 5-year period in a 1,200-bed hospital. Length of stay was compared between the two acute geriatric units (AGU), one in the general hospital (GH) and another in an affiliate hospital (AH), as well as with the rest of departments.Results
A total of 14,948 discharged patients were included. Length of stay was 2.9 (25%) days shorter in AGU units than in the rest of departments. Differences were 22% (9.2 vs 11.7 days) in 2011, 16% (9.3 vs 11.1 days) in 2012, 21% (9.3 vs 11.1 days) in 2013, 34% (7.4 vs 11.1 days) in 2014, and 25% (8.3 vs 11 days) in 2015 in the GH. Differences were 18% (10.4 vs 12.7 days) in 2011, 19% (9.5 vs 11.7 days) in 2012, 25% (8.8 vs 11.7 days) in 2013, 24% (8.8 vs 11.6 days) in 2014, and 32% (9 vs 13.1 days) in 2015 at the AH, all of them with a P < .05.Conclusions
AGU are 25% more efficient than the rest of hospital departments in managing hospital admissions of patients older than 75 years. 相似文献10.
Randa Bittar Élisabeth Aslangul Philippe Giral Lambert Assoumou Marc-Antoine Valantin Olga Kalmykova Marie-Christine Federspiel Corinne Cherfils Dominique Costagliola Dominique Bonnefont-Rousselot 《Comptes rendus biologies》2017,340(2):109-113
Background
We evaluated the effect of 45 days of rosuvastatin or pravastatin treatment on the distribution of HDL subfractions in HIV-1-infected individuals receiving boosted protease inhibitors (PIs) with cardiovascular risk.Methods
The distribution of HDL subclasses by gradient gel electrophoresis was blindly assessed in 74 HIV-1-infected individuals receiving boosted PIs at baseline and at day 45 of statin treatment, and compared with the distribution obtained in 63 healthy normolipidemic individuals taken as controls.Results
No significant modification appeared in HDL distribution between the two arms of statins for the HIV-1-infected individuals. Nevertheless, when compared to controls, HDL subfractions showed a significantly lower HDL2b proportion and significantly higher proportions of HDL2a and HDL3b (P < 0.001).Conclusion
No difference was observed in HDL distribution between pravastatin and rosuvastatin after 45 days treatment, in HIV-1-infected individuals under PIs. Nevertheless, when compared to healthy normolipidemic subjects, HDL distribution is clearly different, with a distribution in HIV-infected individuals under PIs associated with an increased cardiovascular risk. 相似文献11.
A. Mohsina Naveen Kumar A.K. Sharma Sameer Shrivastava Dayamon D. Mathew V. Remya S.K. Maiti Kiranjeet Singh K.P. Singh 《Tissue & cell》2017,49(3):383-392
Purpose
The purpose of study was to develop bioengineered scaffolds by seeding primary mouse embryo fibroblast cells (p-MEF) on polypropylene mesh and to test its efficacy for the repair of abdominal wall defects in rats.Methods
The study was conducted on 18 clinically healthy adult Wistar rats of either sex. The animals were randomly divided into two equal groups having nine animals in each group. In both the groups a 20 mm × 20 mm size full thickness muscle defect was created under xylazine and ketamine anesthesia in the mid-ventral abdominal wall. In group I the defect was repaired with polypropylene mesh alone and in group II it was repaired with p-MEF seeded polypropylene mesh. Matrices were implanted by synthetic absorbable suture material (polyglycolic acid) in continuous suture pattern. The efficacy of the bio-engineered matrices in the reconstruction of full thickness abdominal wall defects was evaluated on the basis of macro and histopathological observations.Results
Macroscopic observations revealed that adhesions with skin and abdominal viscera were minimum in group II as compared to group I. Histopathological observations confirmed better fibroplasia and collagen fiber arrangement in group II. No recurrence of hernia was found in both the groups.Conclusion
Hernias are effectively repaired by implanting polypropylene mesh. However, this work demonstrates that in vitro seeding of mesh with fibroblasts resulted in earlier subsidization of pain, angiogenesis and deposition of collagen, increased thickness of matrices with lesser adhesions with underlying viscera. On the basis of the results p-MEF seeded mesh was better than non-seeded mesh for repair of abdominal wall defects in rats. 相似文献12.
Background
Low extracellular pH (pHe) is a common hallmark of tumor microenvironment, which will also affect pH sensitive T-lymphocytes in this environment. Due to the growing interest on T-cell mediated cancer therapies, acidic stress induced consequences on this lymphocyte deserves through investigations.Results
In line with our previous study [Kim et al., Biochem. Biophys. Res. Commun. 2016; 472(4): 585-91.], we applied sub-lethal acidic stress (pH 3.3, 37 °C for 25 min) to Jurkat T-lymphocytes. Progression from early apoptosis into late apoptosis was clearly observed by flow cytometry within 3 days. Treatment led to onset of G1 arrest in the first 24 h and cell cycling data corresponded to survival of an invasive alkaline phosphatase (AP) positive population. Concerning the massive cell death observed after 72 h, both mRNA level (qRT-PCR) and protein level (western blotting) data indicate programmed cell death through p53-p21 independent signaling.Conclusion
Taken together, the results obtained suggest that the majority of Jurkat cells exposed to short but intense acidic stress conditions, as used here, undergo intrinsic apoptosis, while invasion and AP activation only occurred in a small surviving cell population. 相似文献13.
Nikoo Bana Davood Sanooghi Mansoureh Soleimani Nasim Hayati Roodbari Sepideh Alavi Moghaddam Mohammad Taghi Joghataei Forough Azam Sayahpour Faezeh Faghihi 《Tissue & cell》2017,49(4):495-502
Objective
Musculodegenerative diseases threaten the life of many patients in the world. Since drug administration is not efficient in regeneration of damaged tissues, stem cell therapy is considered as a good strategy to restore the lost cells. Since the efficiency of myogenic differentiation potential of human Chorion- derived Mesenchymal Stem Cells (C-MSCs) has not been addressed so far; we set out to evaluate myogenic differentiation property of these cells in comparison with Umbilical Cord Blood- derived Mesenchymal Stem Cells (UCB-MSCs) in the presence of 5-azacytidine.Materials & methods
To do that, neonate placenta Umbilical Cord Blood were transferred to the lab. After characterization of the isolated cells using flowcytometry and multilineage differentiation capacity, the obtained Mesenchymal Stem Cells were cultured in DMEM/F12 supplemented with 2% FBS and 10 μM of 5-azacytidine to induce myogenic differentiation. Real-time PCR and immunocytochemistry were used to assess the myogenic properties of the cells.Results
Our data showed that C-MSCs and UCB-MSCs were spindle shape in morphology. They were positive for CD90, CD73 and CD44 antigens, and negative for hematopoietic markers. They also differentiated into osteoblast and adipoblast lineages. Real-time PCR results showed that the cells could express MyoD, desmin and α-MHC at the end of the first week (P < 0.05). No significant upregulation was detected in the expression of GATA-4 in both groups. Immunocytochemical staining revealed the expression of Desmin, cTnT and α-MHC.Conclusions
Results showed that these cells are potent to differentiate into myoblast- like cells. An upregulation in the expression of some myogenic markers (desmin, α- MHC) was observed in C-MSCs in comparison with UCB-MSCs. 相似文献14.
Background
Abnormal vision has been reported by 3% of patients treated with sildenafil citrate (Viagra). Although many men use Viagra for an extended period for treatment of erectile dysfunction, the implications of the long term-daily use of it on the retina and optic nerve are unclear.Aim of the work
To investigate the effect of chronic daily use of sildenafil citrate in a dose equivalent to men preferred therapeutic dose on the histology of the retina and optic nerve of adult male rat.Material & methods
Eighteen adult male Wistar rats were equally divided into three groups. Group I: control. Group II: treated with sildenafil citrate orally (10 mg/kg/day) for 8 weeks. Group III (withdrawal): treated as group II and then left for 4 weeks without treatment. Specimens from the retina and optic nerve were processed for light and electron microscopy.Results
In sildenafil citrate treated group, the retina and optic nerve revealed vacuolations and congested blood capillaries with apoptotic endothelial and pericytic cells, and thickened basal lamina. Caspase-3 (apoptotic marker) and CD31 (endothelial marker) expression increased. Glial cells revealed morphological changes: Müller cells lost their processes, activated microglia, astrocytic clasmatodendrosis, degenerated oligodendrocytes surrounded by disintegrated myelin sheathes of the optic nerve fibers. The retina and optic nerve of the withdrawal group revealed less vacuolations and congestion, and partial recovery of the glial cells.Conclusion
Chronic treatment with sildenafil citrate (Viagra) caused toxic effect on the structure of the retina and optic nerve of the rat. Partial recovery was observed after drug withdrawal. 相似文献15.
Rania N. Sherif 《Tissue & cell》2017,49(6):726-733
Background
Diabetes mellitus represents one of the disorders in the metabolism that affects all body systems including CNS. Cerebrolysin contains many neurotrophic factors, and many studies reported that it can be used treatment of many neurological disorders.Aim of the work
The aim of the current study was to study the potential neuroprotective effect of cerebrolysin on the cerebellum of diabetic rat.Materials and methods
Sprague Dawley male rats were divided randomly into four groups: control, cerebrolysin (Cbl), diabetes and diabetes treated with Cbl groups. Induction of diabetes was performed by intraperitoneal injection of 60 mg/kg streptozotocin once. Eight weeks later, the rats were anaesthetized, sacrificed and the cerebellum was removed. Cerebellum oxidative stress markers were analysis. Cerebellar tissue was subjected to histolopathological examination and immune-histological assessment of GFAP and Synaptophysin.Results
As compared to the control group, diabetes caused degenerative changes in the cerebellum with significant elevation of MDA and decrease of SOD levels and gliosis confirmed by increase the GFAP expression area fraction. Diabetes increased significantly the optical density of synaptophysin expression with increase in its area fraction in the granular layer. Although Cbl treatment succeeded in minimizing the changes in the oxidative stress markers, it had no effect on pathological changes of the diabetic cerebellum. Cerebrolysin treatment of diabetic rats decreased the area fraction of GFAP positive immunoreactivity and had no effect on synaptophysin expression.Conclusion
Cerebrolysin can potentially protect against diabetes induced changes in the cerebellum through minimizing the oxidative stress and improving the gliosis. 相似文献16.
Mohammad Hossein Rajabian Gholam Hossein Ghorabi Bita Geramizadeh Safoura Sameni Maryam Ayatollahi 《Tissue & cell》2017,49(1):112-121
Background
Chronic wounds present a major challenge in modern medicine. Even under optimal conditions, the healing process may lead to scarring and fibrosis. The ability of mesenchymal stem cells (MSCs) to differentiate into other cell types makes these cells an attractive therapeutic tool for cell transplantation. Both tissue-engineered construct and MSC therapy are among the current wound healing procedures and potential care. Chitosan has been widely applied in tissue engineering because of its biocompatibility and biodegradability.Aim
The aim of the current work was to compare the efficiency of MSCs and chitosan dressing, alone or in combination treatment on wound healing.Methods
This study was conducted on 15 rabbits, which were randomly divided in 3 groups based on the type of treatment with MSCs, chitosan dressing and combination of both. A full–thickness skin defect was excised from the right and left side of the back of each animals. Defects on right sides were filled with treatments and left side defects were left as control. Evaluation of the therapeutic effectiveness was performed through a variety of clinical and microscopical evaluations and measurements of the process of wound healing on days 7, 14, 21, and 28. Histological evaluation of wound healing was classified by different scoring systems.Results
The data indicated that wounds treated with bone marrow derived MSC had enhanced cellularity and better epidermal regeneration. During the early stages of wound healing, the closure rate of bone marrow derived MSC-treated wounds were significantly higher than other treatments (P < 0.05). Although the MSCs in the wound edges enhance the healing of the full–thickness wound, the healing process of chitosan treatment was slower than the control group.Conclusion
This study revealed advanced granulation tissue formation and epithelialization in wounds treated with MSCs, and may suggests this treatment as an effective applicant in wound healing process. Chitosan scaffold dressings, whether alone or in combination with MSCs, have worsened the wound healing as compared to the control group. 相似文献17.
Susan Maria Gaurav Barnwal Anil Kumar Karthika Mohan Vivek Vinod Aswathi Varghese Raja Biswas 《Revista iberoamericana de micología》2018,35(3):147-150
Background
Candida parapsilosis is recognized as a species complex: Candida parapsilosis sensu stricto, Candida orthopsilosis and Candida metapsilosis are three distinct but closely related species.Aims
To determine the species and antifungal susceptibility of members of the C. parapsilosis complex, isolated from clinical samples.Methods
Isolates identified as C. parapsilosis complex by VITEK® 2 system were included. Antifungal susceptibility test was done using the VITEK® 2 semi-automated system. The distribution of the species in the complex was determined by multiplex PCR.Results
Among the seventy-seven C. parapsilosis complex isolates, C. parapsilosis sensu stricto (57.1%) was the commonest species, followed by C. orthopsilosis (40.2%) and C. metapsilosis (2.5%). All three species were susceptible to amphotericin B, caspofungin and micafungin. Among C. parapsilosis sensu stricto isolates, 16% were resistant to fluconazole while 2.2% showed dose dependent susceptibility. Also, 18.2% of C. parapsilosis sensu stricto isolates showed dose dependent susceptibility to voriconazole.Conclusions
C. parapsilosis sensu stricto was the most commonly isolated member of the C. parapsilosis complex and it showed high resistance to fluconazole. A high prevalence of C. orthopsilosis (40.2%) was also noted. 相似文献18.
Use of lignocellulosic wastes of pecan (Carya illinoinensis) in the cultivation of Ganoderma lucidum
María Virginia Ozcariz-Fermoselle Raúl Fraile-Fabero Tomás Girbés-Juan Oscar Arce-Cervantes Juan Andrés Oria de Rueda-Salgueiro Anabela Marisa Azul 《Revista iberoamericana de micología》2018,35(2):103-109
Background
The wastes of pecan nut (Carya illinoinensis (Wangenh.) K. Koch) production are increasing worldwide and have high concentrations of tannins and phenols.Aims
To study the biodegradation of lignocellulosic wastes of pecan used as solid substrate for the cultivation of the white-rot fungus Ganoderma lucidum (Curtis) P. Karst.Methods
Six formulations of pecan wastes were used as solid substrate: pecan shells (PS100), pecan pericarp (PP100), pecan wood-chips (PB100), and the combinations PS50 + PP50, PB50 + PS50 and PB50 + PP50. The substrates were inoculated with a wild strain of G. lucidum collected in the Iberian Peninsula. The biodegradation capability of G. lucidum was estimated by using the mycelial growth rate, the biological efficiency, the production and the dry biological efficiency.Results
Notably, all solid substrates were suitable for G. lucidum growth and mushroom yield. The best performance in mushroom yield was obtained with PB100 (55.4% BE), followed by PB50 + PP50 (31.7% BE) and PB50 + PS50 (25.4% BE). The mushroom yield in the substrates containing pecan wood-chips (PB) was significantly higher.Conclusions
Our study is leading the way in attempting the cultivation of G. lucidum on lignocellulosic pecan waste. These results show an environmentally friendly alternative that increases the benefits for the global pecan industry, especially in rural areas, and transforms biomass into mushrooms with nutraceutical properties and biotechnological applications. 相似文献19.
Adela Poitevin-Chacón Jessica Chávez-Nogueda Rubí Ramos Prudencio Alejandro Calvo Fernández Alejandro Rodríguez Laguna Jesús Linares Julio César Martínez 《Reports of Practical Oncology and Radiotherapy》2018,23(2):91-96