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Iranian Journal of Public Health Apr 2022a species are normal vaginal flora in healthy women, which can cause vulvovaginal candid-iasis (VVC). The formation of biofilm is a cause of drug resistance in species...
BACKGROUND
a species are normal vaginal flora in healthy women, which can cause vulvovaginal candid-iasis (VVC). The formation of biofilm is a cause of drug resistance in species of vaginal origin. We aimed to specify species cause VVC, detect their biofilm-forming ability, and antifungal susceptibility pattern.
METHODS
Overall 150 vaginal samples were collected from suspected cases of referring to Bahar Hospital of Shahroud, Iran between Jan 2018 and Jan 2019. Samples were cultured on Sabouraud dextrose agar (SDA), Chrome gar and Corn meal agar (CMA). PCR-RFLP was performed to confirm the identification. Bio-film formation of the identified species was measured by the Crystal Violet method. The susceptibility to fluconazole, clotrimazole, and miconazole was determined based on the CLSI document M27-A3.
RESULTS
Of 50 women (33.3%) were suffering from VVC. was the predominant species isolated in this study (n=39, 78%) followed by (n=11, 22%). In addition, in 25 (50%) of positive samples, bio-film formation was determined. The mean MIC of fluconazole and clotrimazole for was 5.02 μg/mL and 3.92 μg/mL, respectively. Furthermore, the mean MIC related to these drugs for was 12.45 μg / mL and 4.1μg / mL, respectively. The mean diameter of miconazole inhibition zone for and isolates was 25.13 mm and 24.5mm, respectively and all of them were susceptible to this drug.
CONCLUSION
was the predominant species isolated from patients with VVC and also was the predominant biofilm producer species.
PubMed: 35936523
DOI: 10.18502/ijph.v51i4.9253 -
Journal of Dentistry Oct 2022This study assessed the effects of chitosan (CS) on microcosm biofilms derived from saliva of patients with Candida-associated denture stomatitis.
OBJECTIVE
This study assessed the effects of chitosan (CS) on microcosm biofilms derived from saliva of patients with Candida-associated denture stomatitis.
METHODS
Five removable denture wearers with denture stomatitis were included in the study. The minimum inhibitory concentration (MIC) of CS against clinical isolates of Candida albicans was determined according to the broth microdilution method. Pooled saliva from the donors was used as an inoculum for the formation of biofilms, which were developed during 72 h on acrylic surfaces in the Amsterdam Active Attachment model. The biofilms were then treated with different concentrations of CS, and the antibiofilm effects were evaluated through the quantification of colony-forming units (CFUs), total biomass (TB), metabolic activity (MA), lactic acid production (LAP), and cell viability (by confocal laser scanning microscopy). Chlorhexidine, miconazole, and nystatin were tested as positive controls, while the negative control (NC) was the untreated biofilm. Data were analyzed by 1-way ANOVA and Fischer LSD's post hoc test (α=0.05).
RESULTS
MIC values of CS ranged from 500 to 800 µg/mL. For CFUs, 2500 µg/mL CS was the most effective treatment in reducing total anaerobes, mutans streptococci, and Lactobacillus spp., significantly differing from the controls. For C. albicans CFUs, CS and positive controls did not differ from each other but led to significant reductions compared to NC. Regarding TB, MA, LAP, and cell viability, 2500 µg/mL CS promoted the greatest reductions compared to NC.
CONCLUSION
CS has similar or superior effects to conventional active principles on important parameters of oral candidiasis microcosm biofilms.
CLINICAL RELEVANCE
The antibiofilm effects of CS show that this compound has great potential to improve the clinical condition of denture stomatitis patients, and formulations containing this natural polymer could be useful for controlling oral candidiasis.
Topics: Humans; Acrylic Resins; Antifungal Agents; Biofilms; Candida albicans; Candidiasis, Oral; Chitosan; Chlorhexidine; Lactic Acid; Miconazole; Nystatin; Stomatitis, Denture
PubMed: 35914573
DOI: 10.1016/j.jdent.2022.104246 -
Neurobiology of Disease Oct 2022Neuroinflammation contributes to the generation of epilepsy and has been proposed as an effective therapeutic target. Recent studies have uncovered the potential effects...
Neuroinflammation contributes to the generation of epilepsy and has been proposed as an effective therapeutic target. Recent studies have uncovered the potential effects of the anti-fungal drug miconazole for treating various brain diseases by suppressing neuroinflammation but have not yet been studied in epilepsy. Here, we investigated the effects of different doses of miconazole (5, 20, 80 mg/kg) on seizure threshold, inflammatory cytokines release, and glial cells activation in the pilocarpine (PILO) pentylenetetrazole (PTZ), and intrahippocampal kainic acid (IHKA) models. We demonstrated that 5 and 20 mg/kg miconazole increased seizure threshold, but only 20 mg/kg miconazole reduced inflammatory cytokines release, glial cells activation, and morphological alteration during the early post-induction period (24 h, 3 days). We further investigated the effects of 20 mg/kg miconazole on epilepsy (4 weeks after KA injection). We found that miconazole significantly attenuated cytokines production, glial cells activation, microglial morphological changes, frequency and duration of recurrent hippocampal paroxysmal discharges (HPDs), and neuronal and synaptic damage in the hippocampus during epilepsy. In addition, miconazole suppressed the KA-induced activation of the NF-κB pathway and iNOS production. Our results indicated miconazole to be an effective drug for disease-modifying effects during epilepsy, which may act by attenuating neuroinflammation through the suppression of NF-κB activation and iNOS production. At appropriate doses, miconazole may be a safe and effective approved drug that can easily be repositioned for clinical practice.
Topics: Cytokines; Epilepsy; Humans; Miconazole; NF-kappa B; Neuroinflammatory Diseases; Seizures
PubMed: 35878745
DOI: 10.1016/j.nbd.2022.105823 -
Journal of Traditional Chinese Medicine... Aug 2022To summarize and evaluate the effectiveness and safety of Redcore lotion on treating vulvovaginal candidiasis (VVC) using a systematic review and Meta-analysis of... (Meta-Analysis)
Meta-Analysis
OBJECTIVE
To summarize and evaluate the effectiveness and safety of Redcore lotion on treating vulvovaginal candidiasis (VVC) using a systematic review and Meta-analysis of randomized controlled trials.
METHODS
A systematic literature search was performed in five English and three Chinese electronic databases up to October 2019. Randomized controlled trials in the treatment for VVC were included; only studies which compared the effectiveness and safety of Redcore lotion plus miconazole with miconazole alone were included. Relative risk (RR) and 95% confidence intervals (CI) were used in the Meta-analysis.
RESULTS
Seven studies involving 768 patients suffering from VVC were identified; 468 of the patients were pregnant women (60.9%). Combination group (Redcore lotion plus miconazole) was more effective in reduCIng symptomatic episodes of VVC than miconazole alone, with respect to cure rate (RR, 1.31; 95% CI, 1.09-1.57; P = 0.01), fungal culture negative rate (RR, 1.21; 95% CI, 1.04-1.41; P = 0.01), and effective rate (RR, 1.18; 95% CI, 1.05-1.35; P = 0.01). Subgroup analyses for pregnant women also showed that the combination group had superior outcomes with respect to VVC cure rate (RR, 1.48; 95% CI, 1.16-1.88, P < 0.01), fungal culture negative rate (RR, 1.26; 95% CI; 1.09-1.47; P < 0.01), and effective rate (RR, 1.25; 95% CI, 1.10-1.42; P < 0.01). Additionally, the observed risk of adverse events was lower in the combination medication group (RR, 0.30; 95% CI, 0.14-0.65; P < 0.01).
CONCLUSIONS
Though overall quality of individual studies was low, Redcore lotion plus miconazole can significantly improve clinical effectiveness and safety compared with miconazole alone.
Topics: Candidiasis, Vulvovaginal; Female; Humans; Miconazole; Pregnancy; Treatment Outcome
PubMed: 35848964
DOI: 10.19852/j.cnki.jtcm.2022.04.001 -
Acta Pharmaceutica Sinica. B Apr 2022Currently, the development of selective fluorescent probes toward targeted enzymes is still a great challenge, due to the existence of numerous isoenzymes that share...
Currently, the development of selective fluorescent probes toward targeted enzymes is still a great challenge, due to the existence of numerous isoenzymes that share similar catalytic capacity. Herein, a double-filtering strategy was established to effectively develop isoenzyme-specific fluorescent probe(s) for cytochrome P450 (CYP) which are key enzymes involving in metabolism of endogenous substances and drugs. In the first-stage of our filtering approach, near-infrared (NIR) fluorophores with alkoxyl group were prepared for the screening of CYP-activated fluorescent substrates using a CYPs-dependent incubation system. In the second stage of our filtering approach, these candidates were further screened using reverse protein-ligand docking to effectively determine CYP isoenzyme-specific probe(s). Using our double-filtering approach, probes and were successfully developed for the real-time and selective detection of CYP2C9 and CYP2J2, respectively, to facilitate high-throughput screening and assessment of CYP2C9-mediated clinical drug interaction risks and CYP2J2-associated disease diagnosis. These observations suggest that our strategy could be used to develop the isoform-specific probes for CYPs.
PubMed: 35847500
DOI: 10.1016/j.apsb.2021.11.019 -
Scientific Reports Jun 2022Elevated numbers of candida in the oral cavity often lead to oral candidiasis development in patients undergoing radiotherapy for oral or oropharyngeal cancer. This...
Elevated numbers of candida in the oral cavity often lead to oral candidiasis development in patients undergoing radiotherapy for oral or oropharyngeal cancer. This study aimed to verify the effect of miconazole mucoadhesive tablets on suppression of oral candida infection during radiotherapy. For this preliminary interventional study, miconazole mucoadhesive tablets were attached to the oral mucosa for 14 days from when grade 2 oral mucositis appeared in patients with oral or oropharyngeal cancer receiving radiotherapy, and the incidence of oral candidiasis was investigated. Various clinical factors were examined; univariate and multivariate Cox regression analyses were performed to investigate and compare the efficacy of this drug in preventing oral candidiasis with results of our previous study as historical control. Miconazole mucoadhesive tablets were administered to 18 patients, and oral candidiasis was observed in one patient (5.6%) after treatment completion. Among 144 historical control patients, 43 (29.9%) developed oral candidiasis. Multivariate Cox regression showed that miconazole mucoadhesive tablets significantly reduced oral candidiasis development during radiotherapy (p = 0.049, Hazard ratio 0.136, 95% confidence interval 0.019-0.994). This preliminary study suggests the efficacy of miconazole mucoadhesive tablets in preventing oral candidiasis in oral or oropharyngeal cancer patients treated with radiotherapy.Trial registration: Japan Registry of Clinical Trials (jRCT), jRCTs071190023. Registered 3 September, 2019.
Topics: Antifungal Agents; Candidiasis; Candidiasis, Oral; Humans; Miconazole; Oropharyngeal Neoplasms; Tablets
PubMed: 35715518
DOI: 10.1038/s41598-022-14269-9 -
Veterinary World Apr 2022Clinical strains of microorganisms, including pathogenic yeast-like fungi (YLF), are resistant to currently used antifungal agents. Thus, it is relevant to study the...
BACKGROUND AND AIM
Clinical strains of microorganisms, including pathogenic yeast-like fungi (YLF), are resistant to currently used antifungal agents. Thus, it is relevant to study the combinations of existing antimicrobial drugs and a medicinal extract of plant origin (farnesol). In previous studies, farnesol showed a relatively strong anti-biofilm effect against . This study aimed to determine how much the resistance profile of non-biofilm microorganisms can change.
MATERIALS AND METHODS
Six clinical isolates of and one reference strain were used to study the interaction of farnesol with the most used antimycotics. To determine the sensitivity of YLF to antimycotic drugs, such as nystatin (50 μg), amphotericin B (10 μg), ketoconazole (10 μg), clotrimazole (10 μg), voriconazole (10 μg), fluconazole (25 μg), miconazole (10 μg), and intraconazole (10 μg), the classic disk diffusion method was used. In the second stage, one of the six strains was used to simulate candidiasis of the gastrointestinal tract in an quail model. As an unusual experimental design, this study investigated the effects of pretreated in quails, not the pathogenicity of , after treatment with farnesol.
RESULTS
The resistance profiles of strains did not improve with farnesol in all strains. All concentrations of farnesol (100, 50, and 25 μM) demonstrated a fungistatic effect (i.e., an increase in drug sensitivity) in 23 of 56 (7×8) cases (41%). The remaining 54% demonstrated no changes in the resistance to antifungal drugs or deterioration of the indicators in rare cases (5%). At 100 μM farnesol, sensitivity improved in 33 of 56 cases (59%). Candidiasis or the severity of clinical disease of the quail digestive tract developed to a lesser extent if fungi were treated with farnesol.
CONCLUSION
Farnesol does not always show a positive result on single cells without biofilm in the laboratory. However, in a biofilm or an model with biofilms, farnesol can be considered a new antimycotic drug or an additive to existing antimycotics.
PubMed: 35698495
DOI: 10.14202/vetworld.2022.848-854 -
Pharmaceutics May 2022Miconazole shows low oral bioavailability in humans due to poor aqueous solubility, although it has demonstrated various pharmacological activities such as antifungal,...
Miconazole shows low oral bioavailability in humans due to poor aqueous solubility, although it has demonstrated various pharmacological activities such as antifungal, anti-tubercular and anti-tumor effects. Cocrystal/salt formation is one of the effective methods for solving this problem. In this study, different methods (liquid-assisted grinding, slurrying and lyophilization) were used to investigate their impact on the formation of the miconazole multicomponent crystals with succinic, maleic and dl-tartaric acids. The solid state of the prepared powder was characterized by differential scanning calorimetry, powder X-ray diffraction and scanning electron microscopy. It was found that lyophilization not only promotes partial amorphization of both salts but also allows obtaining a new polymorph of the miconazole salt with dl-tartaric acid. The lyophilized salts compared with the same samples prepared by two other methods showed better dissolution rates but low stability during the studies due to rapid recrystallization. Overall, it was determined that the preparation method of multicomponent crystals affects the solid-state characteristics and miconazole physicochemical properties significantly. The in vivo studies revealed that the miconazole multicomponent crystals indicated the higher peak blood concentration and area under the curve from 0 to 32 h values 2.4-, 2.9- and 4.6-fold higher than the pure drug. Therefore, this study demonstrated that multicomponent crystals are promising formulations for enhancing the oral bioavailability of poorly soluble compounds.
PubMed: 35631693
DOI: 10.3390/pharmaceutics14051107 -
International Journal of Molecular... May 2022Triazole and imidazole fungicides represent an emerging class of pollutants with endocrine-disrupting properties. Concerning mammalian reproduction, a possible causative...
Synergistic Activity of Ketoconazole and Miconazole with Prochloraz in Inducing Oxidative Stress, GSH Depletion, Mitochondrial Dysfunction, and Apoptosis in Mouse Sertoli TM4 Cells.
Triazole and imidazole fungicides represent an emerging class of pollutants with endocrine-disrupting properties. Concerning mammalian reproduction, a possible causative role of antifungal compounds in inducing toxicity has been reported, although currently, there is little evidence about potential cooperative toxic effects. Toxicant-induced oxidative stress (OS) may be an important mechanism potentially involved in male reproductive dysfunction. Thus, to clarify the molecular mechanism underlying the effects of azoles on male reproduction, the individual and combined potential of fluconazole (FCZ), prochloraz (PCZ), miconazole (MCZ), and ketoconazole (KCZ) in triggering in vitro toxicity, redox status alterations, and OS in mouse TM4 Sertoli cells (SCs) was investigated. In the present study, we demonstrate that KCZ and MCZ, alone or in synergistic combination with PCZ, strongly impair SC functions, and this event is, at least in part, ascribed to OS. In particular, azoles-induced cytotoxicity is associated with growth inhibitory effects, G0/G1 cell cycle arrest, mitochondrial dysfunction, reactive oxygen species (ROS) generation, imbalance of the superoxide dismutase (SOD) specific activity, glutathione (GSH) depletion, and apoptosis. N-acetylcysteine (NAC) inhibits ROS accumulation and rescues SCs from azole-induced apoptosis. PCZ alone exhibits only cytostatic and pro-oxidant properties, while FCZ, either individually or in combination, shows no cytotoxic effects up to 320 µM.
Topics: Animals; Apoptosis; Glutathione; Imidazoles; Ketoconazole; Male; Mammals; Mice; Miconazole; Mitochondria; Oxidative Stress; Reactive Oxygen Species
PubMed: 35628239
DOI: 10.3390/ijms23105429 -
A Case of Recurrent Fungal Keratitis Post-Amniotic Membrane Transplantation for Corneal Perforation.Case Reports in Ophthalmology 2022Here, we report a rare case of recurrent fungal keratitis (FK) post-amniotic membrane transplantation (AMT) for corneal perforation. A 75-year-old female who had...
Here, we report a rare case of recurrent fungal keratitis (FK) post-amniotic membrane transplantation (AMT) for corneal perforation. A 75-year-old female who had undergone systemic 15 mg prednisolone administration for interstitial pneumonia developed FK in her left eye following treatment for herpetic epithelial keratitis at another clinic. The FK was effectively cured via an oral and local antifungal treatment. However, 1 year later, FK recurred in her left eye, and she was subsequently referred to our hospital since fungal infection had penetrated deep into the cornea. Upon examination, her best-corrected visual acuity was 20/20 OD and hand motion OS. Slit-lamp examination revealed infiltration of corneal ulcers and posterior corneal deposits in her left eye, so she was treated with 0.1% miconazole eye drops in addition to oral miconazole and 1% pimaricin ointment. However, corneal perforation occurred 1 week later, so debridement and AMT were performed, which resulted in a successful outcome. At the 4-month postoperative period, the antifungal eye-drop treatment was discontinued due to no clinical signs of infection with scar formation. However, at the 6-month postoperative period, increased white deposits and the emergence of keratic precipitates were observed around the AMT graft. Recurrent FK was suspected, and anterior-chamber irrigation was performed. Immunostaining revealed a yeast-type fungus, and a cultivation test revealed sp. Thus, penetrating keratoplasty was performed, and there has been no recurrence of FK for 1.5 years. In FK cases, AMT should be carefully considered for surgical indications, with strict follow-up in order to detect any possibility of FK recurrence.
PubMed: 35611010
DOI: 10.1159/000522369