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1.
Int J Biol Macromol ; 279(Pt 3): 135402, 2024 Sep 06.
Artículo en Inglés | MEDLINE | ID: mdl-39245114

RESUMEN

Amphotericin B (AmB) is an antifungal agent administered for the management of serious systemic fungal infections. However, its clinical application is limited because of its water insolubility and side effects. Herein, to apply the minimum dose of AmB that can be used to manage fungal infections, a targeted drug delivery system was designed using lipopeptides and poly(lactide-co-glycolide) (PLGA). Lipopeptides conjugated with PEGylated distearoyl phosphoethanolamine (DSPE) and short peptides via a maleimide-thiol reaction formed nanosized micelles with PLGA and AmB. The antifungal effects of AmB-loaded micelles containing lipopeptides were remarkably enhanced both in vitro and in vivo. Moreover, the intravenous injection of these micelles demonstrated their in vivo targeting capacity of short peptides in a mouse model infected with drug-resistant Candida albicans. Our findings suggest that short antifungal peptides displayed on the surfaces of micelles represent a promising therapeutic candidate for targeting drug-resistant fungal infections.

2.
BMC Oral Health ; 24(1): 1052, 2024 Sep 08.
Artículo en Inglés | MEDLINE | ID: mdl-39245758

RESUMEN

BACKGROUND AND OBJECTIVES: Mineral Trioxide Aggregate (MTA) is one of the main retrograde filling materials that is used today as a root end filling material and perforation repair material. This study was conducted with the aim of investigating the antibacterial and antifungal properties of four types of bio-ceramic materials, AGM MTA, Ortho MTA, Pro root MTA and Cem cement for oral and dental health. METHODS: In this study, the antibacterial activity of four types of bio-ceramic materials against two bacterial strains of Enterococcus faecalis (ATTC 29212), Escherichia coli (ATTC 35318) and antifungal activity against Candida albicans (ATTC 10231) were investigated using the well diffusion method. RESULTS: In the context of the relationship between the type of microorganism and the diameter of the growth inhibitory zone for each type of bio-ceramic material, there was no significant difference for Enterococcus faecalis, and a significant difference was observed for Escherichia coli and Candida albicans (p < 0.05). CONCLUSION: The results show that each of the bio-ceramic materials AGM, Pro root, Cem cement and Ortho have antibacterial and antifungal properties. AGM MTA bio-ceramic material on Candida albicans fungus and Ortho MTA bio-ceramic material had the most effect on Escherichia coli bacteria. Therefore, the mentioned bio-ceramic materials can play a significant role in oral and dental health by providing a suitable material for restoration.


Asunto(s)
Compuestos de Aluminio , Compuestos de Calcio , Candida albicans , Cerámica , Combinación de Medicamentos , Enterococcus faecalis , Escherichia coli , Óxidos , Materiales de Obturación del Conducto Radicular , Silicatos , Compuestos de Calcio/farmacología , Silicatos/farmacología , Candida albicans/efectos de los fármacos , Enterococcus faecalis/efectos de los fármacos , Óxidos/farmacología , Compuestos de Aluminio/farmacología , Escherichia coli/efectos de los fármacos , Materiales de Obturación del Conducto Radicular/farmacología , Humanos , Cementos Dentales/farmacología , Antibacterianos/farmacología , Ensayo de Materiales , Antifúngicos/farmacología
3.
World J Crit Care Med ; 13(3): 92531, 2024 Sep 09.
Artículo en Inglés | MEDLINE | ID: mdl-39253314

RESUMEN

BACKGROUND: The oral cavity harbors more than 700 species of bacteria, which play crucial roles in the development of various oral diseases including caries, endodontic infection, periodontal infection, and diverse oral diseases. AIM: To investigate the antimicrobial action of Cymbopogon Schoenanthus and Pelargonium graveolens essential oils against Streptococcus mutans, Staphylococcus aureus, Candida albicans, Ca. dubliniensis, and Ca. krusei. METHODS: Minimum microbicidal concentration was determined following Clinical and Laboratory Standards Institute documents. The synergistic antimicrobial activity was evaluated using the Broth microdilution checkerboard method, and the antibiofilm activity was evaluated with the 3-[4,5-dimethylthiazol-2-yl]-2,5 diphenyl tetrazolium bromide assay. Data were analyzed by one-way analysis of variance followed by the Tukey post-hoc test (P ≤ 0.05). RESULTS: C. schoenanthus and P. graveolens essential oils were as effective as 0.12% chlorhexidine against S. mutans and St. aureus monotypic biofilms after 24 h. After 24 h P. graveolens essential oil at 0.25% was more effective than the nystatin group, and C. schoenanthus essential oil at 0.25% was as effective as the nystatin group. CONCLUSION: C. schoenanthus and P. graveolens essential oils are effective against S. mutans, St. aureus, Ca. albicans, Ca. dubliniensis, and Ca. krusei at different concentrations after 5 min and 24 h.

4.
ACS Synth Biol ; 2024 Sep 12.
Artículo en Inglés | MEDLINE | ID: mdl-39265099

RESUMEN

Engineering live biotherapeutic products against fungal pathogens such as Candida albicans has been suggested as a means to tackle the increasing threat of fungal infections and the development of resistance to classical antifungal treatments. One important challenge in the design of live therapeutics is to control their localization inside the human body. The specific binding capability to target organisms or tissues would greatly increase their effectiveness by increasing the local concentration of effector molecules at the site of infection. In this study, we utilized surface display of carbohydrate binding domains to enable the probiotic E. coli Nissle 1917 to adhere specifically to the pathogenic yeast Candida albicans. Binding was quantified using a newly developed method based on the automated analysis of microscopic images. In addition to a rationally selected chitin binding domain, a synthetic peptide of identical length but distinct sequence also conferred binding. Efficient binding was specific to fungal hyphae, the invasive form of C. albicans, while the yeast form, as well as abiotic cellulose and PET particles, was only weakly recognized.

5.
J Ethnopharmacol ; 337(Pt 1): 118826, 2024 Sep 15.
Artículo en Inglés | MEDLINE | ID: mdl-39288826

RESUMEN

ETHNOPHARMACOLOGICAL RELEVANCE: The traditional Chinese medicine formula known as Pulsatilla decoction was utilized to treat conditions such as bacterial dysentery, ulcerative colitis, and fungal infections like vulvovaginal candidiasis (VVC) caused by Candida albicans (C. albicans). In our prior research, it was shown that the n-butanol extract from Pulsatilla Decoction (BEPD) exhibited effective inhibition of C. albicans. Nevertheless, the exact mechanism by which BEPD hinders hyphal growth, a critical virulence factor of C. albicans, remains unclear. AIM OF THE STUDY: In the present study, the inhibitory effect and mechanism of the BEPD on C. albicans hyphal growth was predicted by transcriptome analysis, and further verified by in vitro and in vivo experiments. MATERIALS AND METHODS: The BEPD was prepared and C. albicans was cultured to induce the hyphal state. Transcriptome analysis was conducted to predict the significant difference in enrichment genes and signaling pathways in the inhibitory effect of BEPD on C. albicans hyphae. Various methods, such as spot assay, time-growth curve analysis, Confocal laser scanning microscope (CLSM), scanning electron microscope (SEM), transmission electron microscope (TEM), flow cytometry, and spectrophotometer, were used to assess the effect of BEPD on hyphal structure and growth activity, lipid peroxidation level, peroxidase (CAT) activity, superoxide dismutase (SOD) activity, and apoptosis of C. albicans. Reverse transcription quantitative polymerase chain reaction (RT-qPCR) was employed to examine the expression levels of genes associated with endoplasmic reticulum and peroxisome function. The VVC model was employed to evaluate the influence of BEPD on the growth of C. albicans hyphae in vivo. RESULT: The growth of C. albicans hyphae on solid culture media was significantly inhibited by BEPD. CLSM showed that the length of C. albicans hyphae was decreased and their vitality was lowered. SEM indicated that the hyphae of C. albicans were fractured, while TEM revealed damage to the organelles within the cells. GO enrichment and KEGG pathways analysis from transcriptomic data demonstrated that BEPD effectively suppressed the functioning of the endoplasmic reticulum and peroxisomes in C. albicans hyphae. RT-qPCR verified the decreased expression of genes associated with endoplasmic reticulum and peroxisome function by BEPD. Investigation of the endoplasmic reticulum revealed that BEPD elevated levels of reactive oxygen species (ROS) and apoptosis, indicating endoplasmic reticulum stress, as well as malondialdehyde (MDA), a marker of oxidative stress. Additionally, BEPD was shown to lower the activities of catalase (CAT) and superoxide dismutase (SOD). In animal trials, BEPD effectively hindered the growth of C. albicans hyphae in the vaginas of mice with VVC, thus reducing immune inflammatory damage to the vaginal mucosa of these mice. CONCLUSION: This study demonstrates that BEPD has an inhibitory effect on hyphae, which are an important virulence factor of C. albicans. This effect may be related to BEPD's inhibitory effect on endoplasmic reticulum (ER) and peroxisome function. The findings suggest that BEPD could potentially play a therapeutic role in C. albicans infectious diseases by inhibiting hyphae.

6.
AIMS Microbiol ; 10(3): 694-722, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39219750

RESUMEN

Nearly two million people die each year from fungal infections. Additionally, fungal crop infections jeopardize the global food supply. The use of 254 nm UVC radiation from mercury vapor lamps is a disinfection technique known to be effective against all microorganisms, and there are surveys of published UVC sensitivities. However, these mainly focus on bacteria and viruses. Therefore, a corresponding overview for fungi will be provided here, including far-UVC, UVB, UVA, and visible light, in addition to the conventional 254 nm UVC inactivation. The available literature was searched for photoinactivation data for fungi in the above-mentioned spectral ranges. To standardize the presentation, the mean log-reduction doses were retrieved and sorted by fungal species, spectral range, wavelength, and medium, among others. Additionally, the median log-reduction dose was determined for fungi in transparent liquid media. Approximately 400 evaluable individual data sets from publications over the last 100 years were compiled. Most studies were performed with 254 nm radiation from mercury vapor lamps on Aspergillus niger, Candida albicans, and Saccharomyces cerevisiae. However, the data found were highly scattered, which could be due to the experimental conditions. Even though the number of individual data sets seems large, many important fungi have not been extensively studied so far. For example, UV irradiation data does not yet exist for half of the fungal species classified as "high priority" or "medium priority" by the World Health Organization (WHO). In addition, researchers should measure the transmission of their fungal suspensions at the irradiation wavelength to avoid the undesirable effects of either absorption or scattering on irradiation results.

7.
Rev Iberoam Micol ; 2024 Sep 19.
Artículo en Inglés | MEDLINE | ID: mdl-39304432

RESUMEN

BACKGROUND: Early diagnosis of candidemia is critical for the correct management and treatment of patients. AIMS: To test the efficacy of different blood culture bottles in the growth of Candida strains. METHODS: We compared the performance of BD BACTEC™ Plus Aerobic/F (Aero) culture bottles with the specific BD BACTEC™ Mycosis IC/F Lytic (Myco) culture bottles using the BD BACTEC™ FX 40 automated blood culture system to determine the mean time-to-detection (TTD) in Candida species. One isolate each of six Candida species was inoculated into blood culture bottles (final concentration, 1-5CFUml-1) and incubated at 37°C until automated growth detection. RESULTS: Candida albicans and Nakaseomyces glabratus (Candida glabrata) were detected earlier in the specific culture bottle, whereas Candida tropicalis was detected earlier in the nonspecific bottle; Candida parapsilosis, Pichia kudriavzevii (Candida krusei), and Meyerozyma guilliermondii (Candida guilliermondii) presented similar TTD in both bottles. CONCLUSIONS: Our study suggests the suitability of using both bottles in clinical laboratories for a faster diagnosis and prompt starting of any treatment.

8.
BMC Oral Health ; 24(1): 1107, 2024 Sep 18.
Artículo en Inglés | MEDLINE | ID: mdl-39294648

RESUMEN

INTRODUCTION: Orthodontic clear aligners and retainers have numerous advantages that is making them ever increasingly popular. However, they might, similar to any other oral appliance, contribute to biofilm formation and finally dental caries or white spot lesions or gingival inflammations. The literature on biofilm formation on orthodontic clear appliances is very scarce and limited to a few microorganisms and materials. Therefore, this experimental study evaluated the biofilm formation on 5 thermoformed and 3D printed CAD/CAM orthodontic retainers in 3 intervals. METHODS: In this in vitro study, 345 specimens (270 test discs and 45 negative controls) were created from fabricated retainers. Retainers included a 3D printed CAD/CAM material (Detax) and four thermoformed retainers [Erkodent (polyethylene terephthalate glycol [PETG]); EasyVac (polyethylene); DB (polyester based on terephthalic acid); and Clear Tech]. They were all 1 mm thick, and all completely fabricated, i.e., heated or printed. The discs were placed in 96-well plates. Microorganisms were cultured on 270 discs for 24 h (90 discs), 72 h (90 other discs), and 5 days or 120 h (90 other discs). Biofilm formation of the strains and negative controls was measured using the microtiter plate assay by ELISA reading. The microbes' ability to produce biofilm was categorized based on the comparison of average optical density (OD) of tests versus a cut-off point OD (ODc) calculated as the average of the OD of corresponding negative controls plus 3× its standard deviation: non-biofilm former [OD ≤ ODc], weak biofilm former [ODc < OD ≤ (2 × ODc)], moderate biofilm former [(2 × ODc) < OD ≤ (4 × ODc)], and strong biofilm former [(4 × ODc) < OD]. These were also converted to ranked scores between zero (no biofilm) and 3. The difference between ODs with control ODs were calculated. These were analyzed using 3-way ANOVA, 2-way ANOVA, and Tukey tests (α = 0.05, α = 0.008). RESULTS: The 3-way ANOVA showed that the overall difference among the ΔODs of 5 retainers (all microorganisms and all intervals combined, n = 270) was not significant (F = 1.860, P = 0.119). Nevertheless, the difference among 3 intervals (F = 31.607, P = 0.0000) and the difference among the 6 microorganisms (F = 24.044, P = 0.0000) were significant. According to the Tukey test, the differences between the 1st interval with either of the other two intervals was significant (both P values = 0.000). There were significant differences between Candida albicans with all other organisms (all 5 P values = 0.0000). All other pairwise comparisons were insignificant (all 10 P values ≥ 0.1). After taking the averages of the 3 intervals, the order of the biofilm generation for different materials were as follows: Detax (average score: 1.56), Easyvac (1.67), Erkodent (1.78), Clear Tech (1.83), BD (2.28). CONCLUSIONS: As far as these 6 microorganisms are of concern, there might not be a significant overall difference among the clear retainer materials tested in this study. A significant overall increase was observed between the first and third days, which later did not significantly increase more until day 5. The Candida albicans biofilm was more intense than the tested 5 bacteria, which themselves showed rather similar growth patterns to each other.


Asunto(s)
Biopelículas , Candida albicans , Lacticaseibacillus casei , Retenedores Ortodóncicos , Tereftalatos Polietilenos , Impresión Tridimensional , Staphylococcus aureus , Staphylococcus epidermidis , Streptococcus mutans , Streptococcus sanguis , Biopelículas/crecimiento & desarrollo , Candida albicans/fisiología , Técnicas In Vitro , Retenedores Ortodóncicos/microbiología , Polietilenglicoles , Humanos , Diseño Asistido por Computadora
9.
Sci Rep ; 14(1): 20669, 2024 09 05.
Artículo en Inglés | MEDLINE | ID: mdl-39237763

RESUMEN

Singlet oxygen is considered an important cell damaging agent due to its propensity to react with organic compounds. This drives the interest in developing methods for determination of 1O2. Simplicity of application and high sensitivity makes fluorescent probes a popular choice for in vivo 1O2 detection. Despite its proclaimed cell-impermeability, the commercially available Singlet Oxygen Sensor Green (SOSG) is widely applied to support assertions of 1O2 involvement in cell and tissue damage. Our investigation, however, demonstrate that different microbial species and cancer cells become fluorescent when exposed to SOSG under conditions which exclude generation of 1O2. Cells, permeabilized with chlorhexidine or by heat exposure under anaerobic conditions, exhibited SOSG fluorescence. Permeabilized cells could be stained with SOSG even 24 h post-permeabilization. Since SOSG is cell impermeable, the main factor that led to fluorescent staining was plasma membrane damage. Spectral analyses of different batches of SOSG revealed that SOSG endoperoxide (SOSG-EP) did not increase even after prolonged storage under the recommended conditions. The commercial preparations of SOSG, however, were not SOSG-EP free, which can produce erroneous results when SOSG staining is used as a proof of singlet oxygen production in vivo.


Asunto(s)
Colorantes Fluorescentes , Oxígeno Singlete , Oxígeno Singlete/metabolismo , Humanos , Colorantes Fluorescentes/química , Coloración y Etiquetado/métodos , Membrana Celular/metabolismo
10.
Int Immunopharmacol ; 142(Pt A): 113141, 2024 Sep 13.
Artículo en Inglés | MEDLINE | ID: mdl-39276453

RESUMEN

Hemophagocytic lymphohistiocytosis (HLH) is a rare disease characterized by the uncontrolled activation of the immune system, resulting in a high clinical mortality rate. A 56-year-old Chinese female presented at the emergency room with symptoms including fever, fatigue, nausea, vomiting, cough, shortness of breath, and chest tightness. Laboratory investigations demonstrated decreased levels of white blood cells, hemoglobin, and platelets while interleukin-6 and ferritin exhibited significant elevations. She was subsequently admitted to the hematology department, where she was diagnosed with HLH caused by a Candida infection. Following treatment with antifungal agents, glucocorticoids, antiemetics, diuretics, and hepatoprotective therapy, the patient's condition has shown improvement. However, after being infected with Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), the patient experienced a reactivation of HLH, resulting in a more severe clinical presentation and complications compared to the initial onset. Although the patient's condition improved after the administration of antiviral drugs, etoposide, glucocorticoids, cyclosporin, and intravenous immunoglobulin, this case highlights the possibility of disease reactivation during the recovery phase of HLH. This should raise the attention of medical professionals.

11.
J Mycol Med ; 34(4): 101509, 2024 Sep 03.
Artículo en Inglés | MEDLINE | ID: mdl-39276531

RESUMEN

Vulvovaginal candidiasis is a yeast infection commonly caused by the overgrowth of Candida species in and around the vulva and vagina. Abnormal vaginal discharge, itching and irritation, swelling and redness of the vaginal area, pain during sexual intercourse, and dyspareunia are important clinical findings of the infection. Currently, the infection is one of the growing burdens to married women. Moreover, the infection with antifungal-resistant Candida species adds challenges to managing the disease. Hence, this study was conducted to identify the different Candida species causing vulvovaginal candidiasis and to determine its susceptibility pattern against different antifungal drugs. A hospital-based cross-sectional and quantitative study was conducted for the period of six months from September 2022 to March 2023 among symptomatic married women in the Gynecology and Obstetrics Department of Bharatpur Hospital, Chitwan. A total of 300 symptomatic cases were enrolled in the study. Candida species were isolated from vaginal swabs following standard microbiological procedures and antifungal susceptibility testing was performed with different antifungal agents. The total prevalence of vulvovaginal candidiasis was found to be 37.3 % (112/300). Among different isolates, Candida albicans was found to be the most predominant (52.6 %), followed by Candida glabrata (29.3 %) among non-albicans. Women from the age group 25-35 years were found to be more infected (47.3 %) and the relationship between contraceptive use and vulvovaginal candidiasis was found to be statistically significant (p < 0.05). Candida species showed higher susceptibility toward Amphotericin-B (68.1 %), followed by fluconazole (Diflucan), and Clotrimazole (50.9 %). Whereas the least susceptibility was observed to Voriconazole (27.6 %) and Itraconazole (35.30 %). Candida albicans was comparatively more susceptible to different antifungal drugs than non-albicans species. Candida parapsilosis was only susceptible to Amphotericin-B and the increasing incidence of vaginal candidiasis due to non-albicans Candida indicates the need for routine speciation of Candida.

12.
Am J Transl Res ; 16(8): 3462-3471, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39262731

RESUMEN

This study examines the potential association between Oral Lichen Planus (OLP) and Candida albicans infection, exploring its potential impact on the development of OLP. A meta-analysis of individual case-control studies was performed, estimating odds ratios (ORs) and their corresponding 95% confidence intervals (CIs). A quality assessment of the literature was conducted using the Newcastle-Ottawa Scale (NOS). Due to considerable heterogeneity in the selected studies, subgroup analyses were performed based on geographical location and recruitment methods. No significant publication bias was detected. A sensitivity analysis validated the robustness of the findings when applying a random-effects model. The meta-analysis included ten studies, comprising 1,124 OLP patients and 1,063 healthy controls. Results indicated a significantly higher detection rate of Candida albicans in OLP patients compared to healthy controls (OR = 1.74, P = 0.003, 95% CI: 1.20, 2.52). Additionally, an increased risk of Candida albicans infection was observed in erosive OLP (E-OLP) patients compared to healthy controls (OR = 3.97, 95% CI: 2.31, 6.84, P < 0.00001). These findings suggest a complex interplay between OLP and Candida albicans, highlighting the need for further research to elucidate the varying susceptibilities among different clinical types of OLP. This study provides novel insights for future research directions and clinical treatment strategies in this field.

13.
Microb Pathog ; 196: 106926, 2024 Sep 11.
Artículo en Inglés | MEDLINE | ID: mdl-39270755

RESUMEN

Candida albicans (C. albicans) biofilm infections are quite difficult to manage due to their resistance against conventional antifungal drugs. To address this issue, there is a desperate need for new therapeutic drugs. In the present study, a green and efficient protocol has been developed for the synthesis of 2-amino-4H-pyran-3-carbonitrile scaffolds 4a-i, 6a-j, and 8a-g by Knoevenagel-Michael-cyclocondensation reaction between aldehydes, malononitrile, and diverse enolizable C-H activated acidic compounds using guanidinium carbonate as a catalyst either under grinding conditions or by stirring at room temperature. This protocol is operationally simple, rapid, inexpensive, has easy workup and column-free purification. A further investigation of the synthesized compounds was conducted to examine their antifungal potential and their ability to inhibit the growth and development of biofilm-forming yeasts like fungus C. albicans. According to our findings, 4b, 4d, 4e, 6e, 6f, 6g, 6i, 8c, 8d, and 8g were found to be active and potential inhibitors for biofilm infection causing C. albicans. The inhibition of biofilm by active compounds were observed using field emission scanning electron microscopy (FESEM). Biofilm inhibiting compounds were also tested for in vitro toxicity by using 3T3-L1 cell line, and 4b, 6e, 6f, 6g, 6i, 8c, and 8d were found to be biocompatible. Furthermore, the in silico ADME descriptors revealed drug-like properties with no violation of Lipinski's rule of five. Hence, the result suggested that synthesized derivatives could serve as a useful aid in the development of novel antifungal compounds for the treatment of fungal infections and virulence in C. albicans.

14.
Molecules ; 29(17)2024 Sep 09.
Artículo en Inglés | MEDLINE | ID: mdl-39275117

RESUMEN

This study proposes an affordable plasma device that utilizes a parallel-plate dielectric barrier discharge geometry with a metallic mesh electrode, featuring a straightforward 3D-printed design. Powered by a high-voltage supply adapted from a cosmetic plasma device, it operates on atmospheric air, eliminating the need for gas flux. Surface modification of polyethylene treated with this device was characterized and showed that the elemental composition after 15 min of plasma treatment decreased the amount of C to ~80 at% due to the insertion of O (~15 at%). Tested against Candida albicans and Staphylococcus aureus, the device achieved a reduction of over 99% in microbial load with exposure times ranging from 1 to 10 min. Simultaneously, the Vero cell viability remained consistently high, namely between 91% and 96% across exposure times. These results highlight this device's potential for the surface modification of materials and various infection-related applications, boasting affordability and facilitating effective antimicrobial interventions.


Asunto(s)
Candida albicans , Gases em Plasma , Staphylococcus aureus , Propiedades de Superficie , Candida albicans/efectos de los fármacos , Gases em Plasma/química , Gases em Plasma/farmacología , Staphylococcus aureus/efectos de los fármacos , Animales , Células Vero , Chlorocebus aethiops , Viabilidad Microbiana/efectos de los fármacos , Polímeros/química
15.
Cureus ; 16(8): e66989, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-39280358

RESUMEN

Felty syndrome (FS) is a late manifestation of severe active rheumatoid arthritis (RA). A high index of suspicion or FS is needed in patients who present with neutropaenia and splenomegaly with no initial or obvious identifiable cause. We present the case of a 52-year-old who presented with a one-week history of haemoptysis, fever, and night sweats. The patient was hypotensive, tachycardia, and febrile (38 °C). On examination, bilateral crackles and reduced air entry were identified on the right basal and middle zones. The patient was diagnosed with RA two years prior to this presentation and was not on a disease-modifying antirheumatic drug (DMARD). Haematology showed high inflammatory markers and pancytopenia. Chest X-ray showed a right upper lobe abscess. CT-thorax, abdomen, and pelvis confirmed lung abscesses and hepatosplenomegaly. Candida albicans was detected on the broncho-alveolar lavage. He responded well to antifungal medication and corticosteroids with normalisation of the pancytopenia and inflammatory markers and reduction of the spleen size. This case report details the unusual and early presentation of FS in a patient newly diagnosed with RA and who had no active arthritis. We wish to emphasize the importance of a high index of suspicion in patients with RA regardless of the length of their illness.

16.
Vet Res Forum ; 15(8): 435-438, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39280862

RESUMEN

A 7-year-old castrated male poodle was brought to the referral Animal Medical Center and diagnosed with diabetes and pancreatitis. One month later, the patient presented with cloudy urine, and ultrasonography revealed a large number of spherical substances. The patient was subsequently diagnosed with fungal cystitis with Candida albicans. Initially, 10.00 mg kg-1 itraconazole was prescribed twice daily for six weeks, and the symptoms of prolonged urination improved; however, the fungal balls persisted in the bladder. The six months later, the patient showed recurrent symptoms, such as dysuria and stranguria; therefore, 5.00 mg kg-1 fluconazole was prescribed twice daily; however, it was not effective. Subsequently, 1.00 mg kg-1 caspofungin once daily was administered for three consecutive days. Finally, the fungal balls in the bladder disappeared. The patient was regularly monitored after completion of treatment and, 17 months later, doing well without recurrence. Few reports exist on the use of caspofungin in veterinary medicine. The recommended dose of caspofungin in dogs remains unknown. In the case of azole-resistant Candida, treatment using caspofungin should be considered; although, additional studies on the established dosing and side effects are needed.

17.
Pak J Med Sci ; 40(8): 1619-1624, 2024 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-39281223

RESUMEN

Background & Objectives: Genotypic identification of the etiologic agents of vaginal candidiasis (VC) is of significance in epidemiologic studies and in the establishment of adequate treatment protocol. The aim of this study was to determine the antifungal susceptibility and gene diversity of C. albicans isolated from a group of Jordanian women with VC. Methods: A total of 312 isolates of candida species, recovered from women with vaginal candidiasis who attended gynecology clinics affiliated to three major private hospitals in Amman over a period of five months (July 2020 to December 2020) were included in this study. The isolated Candida were characterized by phenotypic and genotypic means. Genotypic studies were performed using specific PCR primers of the rDNA and RPS genes. Susceptibility testing of all C. albicans isolates was conducted following the National Committee for Clinical Laboratory Standards and E-test strips. Results: Candida albicans was the most dominant Candida spp. that caused VC among the studied population. C. albicans isolates were found to be of three different subtypes at the 25S rDNA gene. All isolates belonged to genotypes A, B and C while genotypes D and E were not detected. The diversity of C. albicans was higher on the basis of RPS region where the use of two markers (P-I and P-II) resulted in the identification of nine distinct C. albicans subtypes. The sensitivity testing revealed variations in the susceptibility of various genotypes to different antifungal drugs. Genotype A isolates were more susceptible to fluconazole, flucytosine and ketoconazole than genotypes B and C. Conclusion: Candida albicans incriminated as etiologic agents of vaginitis among Jordanian women exhibited relationship between various genotypes and antifungal drugs.

18.
Environ Health Insights ; 18: 11786302241272398, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39290369

RESUMEN

Background: Candida is one of the common pathogens in nosocomial infections. Culture is the gold standard for diagnosing candidemia. Candida albicans is identified via the germ tube test, which uses serum as the culture medium, which is costly and time-consuming. This study was conducted to evaluate and compare a relatively simple, fast, and reliable method for the detection of Candida albicans. Methods: We conducted this randomized case study at Taipei City Hospital (TCH) from January 2023 to August 2023, with a total of 30 specimen culture reports collected and confirmed to be cases of Candida albicans infection. A germ tube test was performed in a 37°C water bath using serum, plasma, and safe plasma products (Fresh Frozen Plasma, FFP). Further, the same procedures were repeated with the addition of 22% bovine serum albumin (BSA) to the identification/culture. Results: By adding BSA, more than 50% of the budding phenomenon was observed in 40 minutes, which shortened the diagnosis time compared with the traditional method (2-3 hours). Using BSA can shorten the identification time for early clinical medication and improve the quality of medical care. Conclusion: Using safer plasma products for germ tube test of candidiasis not only reduced the risk of infection for medical technicians but could also replace the serum used in traditional methods to increase convenience and save time. This study proposed BSA as a germ tube induction medium enhancer, which reduced the culture time, thereby enabling quicker diagnosis of C. albicans infections.

19.
J Adv Pharm Technol Res ; 15(3): 139-143, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39290549

RESUMEN

Candida species are the primary cause of candidiasis, a common yeast infection, with Candida albicans being the most prevalent pathogen. These infections often infiltrate the body through cutaneous and vaginal routes. Given the potential severity of some Candida infections, particularly invasive cases, there is a critical need for effective antifungal treatments. Controlled drug delivery strategies have been developed to achieve optimal release kinetics and precise targeting of active agents, especially in fungal infection therapeutics. Consequently, significant attention has been focused on exploring and utilizing bioadhesive polymers to enhance the performance of drug delivery systems for antifungal medications. Bioadhesive drug delivery systems aim to sustain the release of therapeutic agents, reducing the need for frequent dosing. This article provides a comprehensive review of scientific investigations into the use of antifungal drugs within bioadhesive drug delivery systems for treating candidiasis, locally and systemically. The evaluation covers the efficacy of these systems against candidiasis, factors affecting prolonged contact at the application site, and the underlying mechanisms of drug delivery.

20.
Cureus ; 16(8): e67111, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-39290920

RESUMEN

Background Candida albicans is a common fungal pathogen responsible for oral infections, posing significant health challenges. Traditional antifungal treatments often come with side effects and resistance issues, highlighting the need for effective natural alternatives. O. tenuiflorum and Ocimum gratissimum are known for their medicinal properties, including antifungal activity. Objective This study aimed to evaluate the antifungal effectiveness of an O. tenuiflorum and O. gratissimum herbal formulation-based oral rinse against C. albicans. Methods Antifungal activity was measured using agar well diffusion, time-kill curve assays, and analyses of cytoplasmic and protein leakage. The herbal rinse was tested at concentrations of 25 µg/mL, 50 µg/mL, and 100 µg/mL, and compared to a commercial oral rinse. Results The herbal rinse demonstrated strong antifungal effects that increased with concentration. At 100 µg/mL, it produced a 13 mm zone of inhibition, outperforming the commercial rinse's 11 mm. The time-kill assay revealed that the 100 µg/mL concentration reduced fungal counts to 103 CFU/mL within 5 hours, on par with the commercial rinse. Cytoplasmic leakage analysis showed an optical density of 0.42 at 100 µg/mL, close to the commercial rinse's 0.45. Protein leakage analysis indicated an optical density of 0.52 at 100 µg/mL, slightly higher than the commercial rinse's 0.51. Conclusion The O. tenuiflorum and O. gratissimum herbal formulation-based oral rinse exhibit potent antifungal activity against C. albicans, rivaling and even surpassing commercial rinses at higher concentrations. This study underscores the potential of this natural oral rinse as a powerful alternative for managing oral fungal infections, meriting further research and clinical trials to confirm its long-term safety and efficacy.

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