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1.
Mycoses ; 67(4): e13724, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38584320

RESUMEN

OBJECTIVE: This study aims to assess the clinical characteristics of sporotrichosis in low-endemic areas of China, including the prevalence geography, genotypic traits of patients, clinical manifestations, and strain virulence and drug sensitivities. The objective is to improve the currently used clinical management strategies for sporotrichosis. METHODS: Retrospective data were collected from patients diagnosed with sporotrichosis through fungal culture identification. The isolates from purified cultures underwent identification using CAL (Calmodulin) gene sequencing. Virulence of each strain was assessed using a Galleria mellonella (G. mellonella) larvae infection model. In vitro susceptibility testing against commonly used clinical antifungal agents for sporotrichosis was conducted following CLSI criteria. RESULTS: In our low-endemic region for sporotrichosis, the majority of cases (23) were observed in middle-aged and elderly women with a history of trauma, with a higher incidence during winter and spring. All clinical isolates were identified as Sporothrix globosa (S. globosa). The G. mellonella larvae infection model indicated independent and dose-dependent virulence among strains, with varying toxicity levels demonstrated by the degree of melanization of the G. mellonella. Surprisingly, lymphocutaneous types caused by S. globosa exhibited lower in vitro virulence but were more common in affected skin. In addition, all S.globosa strains displayed high resistances to fluconazole, while remaining highly susceptible to terbinafine, itraconazole and amphotericin B. CONCLUSION: Given the predominance of elderly women engaged in agricultural labour in our region, which is a low-epidemic areas, they should be considered as crucial targets for sporotrichosis monitoring. S. globosa appears to be the sole causative agent locally. However, varying degrees of melanization in larvae were observed among these isolates, indicating a divergence in their virulence. Itraconazole, terbinafine and amphotericin B remain viable first-line antifungal options for treating S.globosa infection.


Asunto(s)
Sporothrix , Esporotricosis , Anciano , Persona de Mediana Edad , Humanos , Femenino , Itraconazol/farmacología , Itraconazol/uso terapéutico , Esporotricosis/microbiología , Anfotericina B/farmacología , Anfotericina B/uso terapéutico , Terbinafina/uso terapéutico , Estudios Retrospectivos , Pruebas de Sensibilidad Microbiana , Antifúngicos/farmacología , Antifúngicos/uso terapéutico , Sporothrix/genética , China/epidemiología
2.
Pediatr Transplant ; 28(3): e14740, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38616325

RESUMEN

BACKGROUND: Pediatric lung transplant patients are at risk for developing invasive fungal infections post-transplant. No consensus exists on optimal antifungal regimens and voriconazole, a common first-line agent, has been shown to cause hepatotoxicity. We describe a single-center experience utilizing a novel antifungal regimen of intravenous micafungin and nebulized amphotericin B immediately post-transplant with conversion to an azole at the time of hospital discharge and compare it to a historical cohort of patients who received voriconazole monotherapy throughout their immediate post-operative course. METHODS: This is a retrospective review of patients in the age 0-18 who received a lung transplant from June 2016-May 2021. Data points collected included: demographic data, transplant date and discharge date, Aspergillus colonization, type of lung transplant, hospitalization and level of care information, induction and antifungal medication regimen; AST, ALT, GGT, bilirubin, and direct bilirubin at various timepoints; and respiratory and blood culture results. The two patient groups were compared by assessment of changes in LFTs and culture results. RESULTS: Forty-two patients were included in the analysis, with 24 patients receiving micafungin and nebulized amphotericin and 18 patients receiving voriconazole. All patients in both groups experienced a post-operative elevation in at least one transaminase or bilirubin. More patients in the micafungin/amphotericin group had resolution of all abnormal LFTs by 1 month post-transplant (p = .036). Additionally, patients in the micafungin/amphotericin group experienced faster normalization of their LFTs compared with the voriconazole group (p < .001). Ten patients in the micafungin/amphotericin group and five patients in the voriconazole group were found to have fungal growth on culture post-transplant, but this difference was not found to be statistically significant (p = .507). CONCLUSIONS: An antifungal regimen of micafungin and nebulized amphotericin B liposomal may be useful at decreasing the duration of elevated liver enzymes in pediatric patients in the immediate post-lung transplant period when compared with voriconazole monotherapy. Larger prospective studies looking at antifungal regimens in pediatric patients post-lung transplant are warranted.


Asunto(s)
Antifúngicos , Enfermedad Hepática Inducida por Sustancias y Drogas , Humanos , Niño , Recién Nacido , Lactante , Preescolar , Adolescente , Antifúngicos/uso terapéutico , Anfotericina B/uso terapéutico , Voriconazol/uso terapéutico , Micafungina/uso terapéutico , Receptores de Trasplantes , Estudios Prospectivos , Bilirrubina , Pulmón
3.
BMC Infect Dis ; 24(1): 439, 2024 Apr 24.
Artículo en Inglés | MEDLINE | ID: mdl-38658844

RESUMEN

BACKGROUND: In recent years, the prevalence of respiratory fungal diseases has increased. Polyene antifungal drugs play a pivotal role in the treatment of these conditions, with amphotericin B (AmB) being the most representative drug. This study aimed to evaluate the efficacy and safety of topical administration of AmB in the treatment of respiratory fungal infections. METHODS: We conducted a retrospective study on hospitalized patients treated with topical administered AmB for respiratory fungal infections from January 2014 to June 2023. RESULTS: Data from 36 patients with invasive pulmonary fungal infections treated with topical administration of AmB were collected and analyzed. Nebulization was administered to 27 patients. After the treatment, 17 patients evidenced improved conditions, whereas 10 patients did not respond and died in the hospital. One patient experienced an irritating cough as an adverse reaction. Seven patients underwent tracheoscopic instillation, and two received intrapleural irrigation; they achieved good clinical therapeutic efficacy without adverse effects. CONCLUSION: The combined application of systemic antifungal treatment and topical administration of AmB yielded good therapeutic efficacy and was well-tolerated by the patients. Close monitoring of routine blood tests, liver and kidney function, and levels of electrolytes, troponin, and B-type natriuretic peptide supported this conclusion.


Asunto(s)
Administración Tópica , Anfotericina B , Antifúngicos , Humanos , Anfotericina B/administración & dosificación , Anfotericina B/uso terapéutico , Anfotericina B/efectos adversos , Masculino , Femenino , Estudios Retrospectivos , Persona de Mediana Edad , Antifúngicos/administración & dosificación , Antifúngicos/uso terapéutico , Antifúngicos/efectos adversos , Anciano , Adulto , Resultado del Tratamiento , Infecciones del Sistema Respiratorio/tratamiento farmacológico , Infecciones del Sistema Respiratorio/microbiología , Anciano de 80 o más Años , Enfermedades Pulmonares Fúngicas/tratamiento farmacológico , Adulto Joven
4.
Front Cell Infect Microbiol ; 14: 1366472, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38500502

RESUMEN

Pulmonary Mucormycosis is a fatal infectious disease with high mortality rate. The occurrence of Mucormycosis is commonly related to the fungal virulence and the host's immunological defenses against pathogens. Mucormycosis infection and granulation tissue formation occurred in the upper airway was rarely reported. This patient was a 60-year-old male with diabetes mellitus, who was admitted to hospital due to progressive cough, sputum and dyspnea. High-resolution computed tomography (HRCT) and bronchoscopy revealed extensive tracheal mucosal necrosis, granulation tissue proliferation, and severe airway stenosis. The mucosal necrotic tissue was induced by the infection of Rhizopus Oryzae, confirmed by metagenomic next-generation sequencing (mNGS) in tissue biopsy. This patient was treated with the placement of a covered stent and local instillation of amphotericin B via bronchoscope. The tracheal mucosal necrosis was markedly alleviated, the symptoms of cough, shortness of breath, as well as exercise tolerance were significantly improved. The placement of airway stent and transbronchial microtube drip of amphotericin B could conduce to rapidly relieve the severe airway obstruction due to Mucormycosis infection.


Asunto(s)
Obstrucción de las Vías Aéreas , Mucormicosis , Masculino , Humanos , Persona de Mediana Edad , Anfotericina B/uso terapéutico , Mucormicosis/diagnóstico , Mucormicosis/microbiología , Mucormicosis/patología , Rhizopus oryzae , Necrosis/patología , Obstrucción de las Vías Aéreas/etiología , Obstrucción de las Vías Aéreas/patología , Tejido de Granulación/patología , Tos/patología
5.
APMIS ; 132(5): 291-316, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38465406

RESUMEN

Invasive fungal infections in humans caused by several Candida species, increased considerably in immunocompromised or critically ill patients, resulting in substantial morbidity and mortality. Candida albicans is the most prevalent species, although the frequency of these organisms varies greatly according to geographic region. Infections with C. albicans and non-albicans Candida species have become more common, especially in the past 20 years, as a result of aging, immunosuppressive medication use, endocrine disorders, malnourishment, extended use of medical equipment, and an increase in immunogenic diseases. Despite C. albicans being the species most frequently associated with human infections, C. glabrata, C. parapsilosis, C. tropicalis, and C. krusei also have been identified. Several antifungal drugs with different modes of action are approved for use in clinical settings to treat fungal infections. However, due to the common eukaryotic structure of humans and fungi, only a limited number of antifungal drugs are available for therapeutic use. Furthermore, drug resistance in Candida species has emerged as a result of the growing use of currently available antifungal drugs against fungal infections. Amphotericin B (AmB), a polyene class of antifungal drugs, is mainly used for the treatment of serious systemic fungal infections. AmB interacts with fungal plasma membrane ergosterol, triggering cellular ion leakage via pore formation, or extracting the ergosterol from the plasma membrane inducing cellular death. AmB resistance is primarily caused by changes in the content or structure of ergosterol. This review summarizes the antifungal drug resistance exhibited by Candida species, with a special focus on AmB.


Asunto(s)
Anfotericina B , Micosis , Humanos , Anfotericina B/farmacología , Anfotericina B/uso terapéutico , Candida , Antifúngicos/farmacología , Antifúngicos/uso terapéutico , Pruebas de Sensibilidad Microbiana , Micosis/tratamiento farmacológico , Farmacorresistencia Fúngica , Ergosterol/uso terapéutico
6.
PLoS Negl Trop Dis ; 18(3): e0012050, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38527083

RESUMEN

Pharmacophores such as hydroxyethylamine (HEA) and phthalimide (PHT) have been identified as potential synthons for the development of compounds against various parasitic infections. In order to further advance our progress, we conducted an experiment utilising a collection of PHT and HEA derivatives through phenotypic screening against a diverse set of protist parasites. This approach led to the identification of a number of compounds that exhibited significant effects on the survival of Entamoeba histolytica, Trypanosoma brucei, and multiple life-cycle stages of Leishmania spp. The Leishmania hits were pursued due to the pressing necessity to expand our repertoire of reliable, cost-effective, and efficient medications for the treatment of leishmaniases. Antileishmanials must possess the essential capability to efficiently penetrate the host cells and their compartments in the disease context, to effectively eliminate the intracellular parasite. Hence, we performed a study to assess the effectiveness of eradicating L. infantum intracellular amastigotes in a model of macrophage infection. Among eleven L. infantum growth inhibitors with low-micromolar potency, PHT-39, which carries a trifluoromethyl substitution, demonstrated the highest efficacy in the intramacrophage assay, with an EC50 of 1.2 +/- 3.2 µM. Cytotoxicity testing of PHT-39 in HepG2 cells indicated a promising selectivity of over 90-fold. A chemogenomic profiling approach was conducted using an orthology-based method to elucidate the mode of action of PHT-39. This genome-wide RNA interference library of T. brucei identified sensitivity determinants for PHT-39, which included a P-type ATPase that is crucial for the uptake of miltefosine and amphotericin, strongly indicating a shared route for cellular entry. Notwithstanding the favourable properties and demonstrated efficacy in the Plasmodium berghei infection model, PHT-39 was unable to eradicate L. major infection in a murine infection model of cutaneous leishmaniasis. Currently, PHT-39 is undergoing derivatization to optimize its pharmacological characteristics.


Asunto(s)
Antiprotozoarios , Leishmania infantum , Leishmania , Leishmaniasis Cutánea , Humanos , Animales , Ratones , Antiprotozoarios/farmacología , Antiprotozoarios/uso terapéutico , Anfotericina B/uso terapéutico , Leishmaniasis Cutánea/parasitología , Ftalimidas/farmacología , Ftalimidas/uso terapéutico
7.
Taiwan J Obstet Gynecol ; 63(2): 242-244, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38485323

RESUMEN

OBJECTIVE: Recurrent disseminated coccidioidal meningitis in two subsequent pregnancies is rare and can pose a challenge in ensuring the health of both mother and baby. In this unique case we highlight this rare occurrence and subsequent treatment. CASE REPORT: A 29-year-old G4P1021 with a history of disseminated coccidioidomycosis in a previous pregnancy presented at 8 weeks gestation with nausea, headache, and neck pain. Cerebrospinal fluid analysis was positive for recurrent coccidioidal infection. She was started on Amphotericin and discharged. She re-presented at 30 week's gestation with phonophobia and photophobia, emesis, neck pain and swelling. MRI showed evidence of ventriculomegaly with communicating hydrocephalus. She was treated with therapeutic lumbar punctures throughout her pregnancy and a ventriculoperitoneal shunt following delivery. She had a spontaneous vaginal delivery at 38 weeks and 3 days with no complications. CONCLUSION: This unique case highlights the susceptibility of recurrent disseminated coccidioidomycosis in subsequent pregnancies and treatment thereof.


Asunto(s)
Coccidioidomicosis , Hidrocefalia , Meningitis Fúngica , Humanos , Lactante , Femenino , Embarazo , Adulto , Coccidioidomicosis/diagnóstico , Coccidioidomicosis/tratamiento farmacológico , Dolor de Cuello/complicaciones , Dolor de Cuello/tratamiento farmacológico , Meningitis Fúngica/diagnóstico , Meningitis Fúngica/tratamiento farmacológico , Meningitis Fúngica/complicaciones , Anfotericina B/uso terapéutico , Hidrocefalia/etiología
8.
Zhonghua Nei Ke Za Zhi ; 63(3): 230-257, 2024 Mar 01.
Artículo en Chino | MEDLINE | ID: mdl-38448188

RESUMEN

Amphotericin B (AmB) is a broad-spectrum and potent polyene antifungal drug for the treatment of invasive fungal diseases (IFDs). Currently, amphotericin B deoxycholate (AmB-D) and three AmB lipid formulations, namely liposomal amphotericin B (L-AmB), amphotericin B colloidal dispersion (ABCD), and amphotericin B lipid complex (ABLC) are available for clinical use. In view of clinical concerns and misperceptions in the selection of different formulations of AmB, the present consensus summarized their pharmaceutical characteristics, antifungal mechanism, pharmacokinetics/phamacodynamics, drug interactions, indications, dosage, local administration, and adverse reactions based on the latest clinical research evidence, guidelines, and clinical experience. This consensus also recommends formulation selection and dosage adjustment for the treatment of target IFDs and in special populations, thereby providing expert consensus for clinical decision-making and standardized application of AmB.


Asunto(s)
Anfotericina B , Infecciones Fúngicas Invasoras , Humanos , Anfotericina B/uso terapéutico , Antifúngicos/uso terapéutico , Consenso , Infecciones Fúngicas Invasoras/tratamiento farmacológico
9.
Eur J Clin Microbiol Infect Dis ; 43(4): 713-721, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38347245

RESUMEN

BACKGROUND AND AIM: Patients with end-stage liver disease (ESLD) are susceptible to invasive pulmonary aspergillosis (IPA). This study aimed to investigate the risk factors affecting the occurrence and short-term prognosis of ESLD complicated by IPA. METHODS: This retrospective case-control study included 110 patients with ESLD. Of them, 27 ESLD-IPA received antifungal therapy with amphotericin B (AmB); 27 AmB-free-treated ESLD-IPA patients were enrolled through 1:1 propensity score matching. Fifty-six ESLD patients with other comorbid pulmonary infections were enrolled as controls. The basic features of groups were compared, while the possible risk factors affecting the occurrence and short-term outcomes of IPA were analyzed. RESULTS: Data analysis revealed invasive procedures, glucocorticoid exposure, and broad-spectrum antibiotic use were independent risk factors for IPA. The 54 patients with ESLD-IPA exhibited an overall treatment effectiveness and 28-d mortality rate of 50.00% and 20.37%, respectively, in whom patients treated with AmB-containing showed higher treatment efficacy than patients treated with AmB-free antifungal regimens (66.7% vs. 33.3%, respectively, χ2 = 6.000, P = 0.014). Multivariate logistic regression analysis revealed that the treatment regimen was the only predictor affecting patient outcomes, with AmB-containing regimens were 4.893 times more effective than AmB-free regimens (95% CI, 1.367-17.515; P = 0.015). The only independent predictors affecting the 28-d mortality rate were neutrophil-to-lymphocyte ratio and IPA diagnosis (OR = 1.140 and 10.037, P = 0.046 and 0.025, respectively). CONCLUSIONS: Glucocorticoid exposure, invasive procedures, and broad-spectrum antibiotic exposure increased the risk of IPA in ESLD patients. AmB alone or combined with other antifungals may serve as an economical, safe, and effective treatment option for ESLD-IPA.


Asunto(s)
Enfermedad Hepática en Estado Terminal , Aspergilosis Pulmonar Invasiva , Humanos , Antifúngicos , Estudios Retrospectivos , Estudios de Casos y Controles , Glucocorticoides , Anfotericina B/uso terapéutico , Pronóstico , Factores de Riesgo , Antibacterianos/uso terapéutico
11.
Medicine (Baltimore) ; 103(6): e37160, 2024 Feb 09.
Artículo en Inglés | MEDLINE | ID: mdl-38335438

RESUMEN

RATIONALE: Children with haematological malignancies have a higher risk of developing aggressive pulmonary aspergillosis and a higher mortality rate. The most common site of extrapulmonary aspergillosis in children is the central nervous system (CNS), and the death rate is higher when CNS is affected. Therefore, early diagnosis and treatment of invasive aspergillosis are essential for reducing mortality. PATIENT CONCERNS: We report a case of an 8-year-old girl with acute lymphoblastic leukaemia who developed invasive pulmonary aspergillosis complicated by CNS aspergillosis. Aspergillus was confirmed by metagenomic sequencing of pathogenic microorganisms. DIAGNOSES: Invasive pulmonary and central nervous system aspergillosis. INTERVENTIONS: The patient was treated with combined systemic antifungal agents (voriconazole and liposomal amphotericin B) and intrathecal injection of amphotericin B. OUTCOMES: The treatment was well tolerated and resulted in remarkable clinical and radiological head improvements. LESSONS: Invasive aspergillosis has a high mortality rate and requires early diagnosis and treatment. Pathogenic microbial metagenomic sequencing is a convenient method to assist in the early diagnosis of aspergillosis. Voriconazole is the drug of choice for the treatment of invasive aspergillosis. When CNS aspergillosis occurs, it can be combined with other systemic antifungal drugs and intrathecal injection of amphotericin B.


Asunto(s)
Aspergilosis , Aspergilosis Pulmonar Invasiva , Niño , Femenino , Humanos , Anfotericina B/uso terapéutico , Voriconazol/uso terapéutico , Aspergilosis/diagnóstico , Antifúngicos , Aspergilosis Pulmonar Invasiva/complicaciones , Sistema Nervioso Central
12.
J Investig Med High Impact Case Rep ; 12: 23247096241233042, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38375745

RESUMEN

Blastomyces dermatitidis is a dimorphic fungus that can range from mild to severe disease presentation, including the acute respiratory distress syndrome (ARDS) based on the individual's immunity. Acute respiratory distress syndrome is an uncommon presentation having an incidence of about 10% to 15% but has a high mortality exceeding 90%. This is a case of a 50-year-old female with past medical history of asthma and type 2 diabetes mellitus who presented to the pulmonology clinic with worsening dyspnea for the last 2 months. She also had a lesion in the left lower back, which was draining purulent fluid. Chest radiographs showed bilateral infiltrates and was started empirically on vancomycin and piperacillin-tazobactam. Bronchoalveolar lavage was done and the cultures grew B dermatitidis. The patient was moved to a higher level of care and given amphotericin B. Unfortunately, the patient experienced septic shock, which later deteriorated into cardiac arrest, ultimately leading to their passing. The importance of early diagnosis of blastomycosis and timely treatment has been emphasized in this case report.


Asunto(s)
Blastomicosis , Diabetes Mellitus Tipo 2 , Síndrome de Dificultad Respiratoria , Femenino , Humanos , Persona de Mediana Edad , Blastomicosis/complicaciones , Blastomicosis/diagnóstico , Blastomicosis/tratamiento farmacológico , Diabetes Mellitus Tipo 2/complicaciones , Anfotericina B/uso terapéutico , Blastomyces , Síndrome de Dificultad Respiratoria/etiología
13.
Nat Microbiol ; 9(2): 346-358, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-38225460

RESUMEN

Antibiotic tolerance is the ability of a susceptible population to survive high doses of cidal drugs and has been shown to compromise therapeutic outcomes in bacterial infections. In comparison, whether fungicide tolerance can be induced by host-derived factors during fungal diseases remains largely unknown. Here, through a systematic evaluation of metabolite-drug-fungal interactions in the leading fungal meningitis pathogen, Cryptococcus neoformans, we found that brain glucose induces fungal tolerance to amphotericin B (AmB) in mouse brain tissue and patient cerebrospinal fluid via the fungal glucose repression activator Mig1. Mig1-mediated tolerance limits treatment efficacy for cryptococcal meningitis in mice via inhibiting the synthesis of ergosterol, the target of AmB, and promoting the production of inositolphosphorylceramide, which competes with AmB for ergosterol. Furthermore, AmB combined with an inhibitor of fungal-specific inositolphosphorylceramide synthase, aureobasidin A, shows better efficacy against cryptococcal meningitis in mice than do clinically recommended therapies.


Asunto(s)
Cryptococcus neoformans , Meningitis Criptocócica , Humanos , Animales , Ratones , Anfotericina B/farmacología , Anfotericina B/uso terapéutico , Meningitis Criptocócica/tratamiento farmacológico , Meningitis Criptocócica/microbiología , Antifúngicos/farmacología , Encéfalo , Ergosterol/uso terapéutico
14.
Int J Artif Organs ; 47(3): 223-226, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38281934

RESUMEN

With rates of ECMO utilization on the rise, prevention of nosocomial infections is of paramount importance. Candida auris, an emerging highly pathogenic multidrug resistant fungus, is of particular concern as it is associated with persistent colonization of environmental surfaces, inability to be recognized by many diagnostic platforms, inconsistent laboratory susceptibility results, and high mortality rates. We describe a case of C. auris in a VV-ECMO patient successfully managed with a combination of anidulafungin, amphotericin B, and flucytosine.


Asunto(s)
Antifúngicos , Candida auris , Humanos , Anfotericina B/uso terapéutico , Antifúngicos/uso terapéutico , Candida , Pruebas de Sensibilidad Microbiana
15.
Curr Pharm Des ; 30(1): 1-9, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38178658

RESUMEN

BACKGROUND: Regardless of the most recent inclusion of mold-active agents (isavuconazole and posaconazole) to antifungal agents against mucormycosis, in conjunction with amphotericin B (AMB) items, numerous uncertainties still exist regarding the treatment of this rare infection. The order Mucorales contains a variety of fungi that cause the serious but uncommon fungal illness known as mucormycosis. The moulds are prevalent in nature and typically do not pose significant risks to people. Immunocompromised people are affected by it. OBJECTIVE: This article's primary goal is to highlight the integral role that AMB plays in this condition. METHODS: Like sinusitis (including pansinusitis, rhino-orbital, or rhino-cerebral sinusitis) is one of the many signs and symptoms of mucormycosis. The National Center for Biotechnology Information (NCBI) produces a variety of online information resources for review articles on the topic-based mucormycosis, AMB, diagnosis of mucormycosis and the PubMed® database of citations and abstracts published in life science journals. These resources can be accessed through the NCBI home page at https://www.ncbi.nlm.nih.gov. RESULTS: The article provides a summary of the pharmacological attributes of the various AMB compositions accessible for systemic use. CONCLUSION: The article demonstrates the traits of the drug associated with its chemical, pharmacokinetics, stability, and other features, and illustrates their most useful characteristics for clinical application.


Asunto(s)
Mucorales , Mucormicosis , Sinusitis , Humanos , Anfotericina B/uso terapéutico , Mucormicosis/tratamiento farmacológico , Mucormicosis/diagnóstico , Mucormicosis/microbiología , Antifúngicos/uso terapéutico , Sinusitis/tratamiento farmacológico
16.
Sci Rep ; 14(1): 521, 2024 01 04.
Artículo en Inglés | MEDLINE | ID: mdl-38177182

RESUMEN

The treatment of fungal keratitis (FK) is challenging due to the subacute indolent course, and initial misdiagnosis. In this retrospective case series, we highlight both the diagnostic and therapeutic roles of corneal biopsy together with amniotic membrane transplantation (AMT) in patients with refractory clinically presumed FK. Debulking biopsy and tectonic AMT were performed during the initial presentation. Biopsy specimens were sent for KOH smears and cultures. After KOH smears confirmed the presence of fungal elements, topical voriconazole 1% was prescribed for the first 72 h then tailored according to the clinical response and the culture results. The outcome measures were complete resolution of infection and restoration of corneal integrity. Cases associated with culture proven bacterial keratitis were excluded. Twelve cases were included in the study. KOH smears confirmed the presence of fungal growth in all specimens. Cultures grew Aspergillus in 6/12 cases, sensitive to voriconazole (5/6) and amphotericin (3/6); Fusarium (4/12), sensitive to both voriconazole and amphotericin; and no growth in 2/12 cases. Amphotericin 0.15% eye drops were added to the 7 cases with proven sensitivity and to the remaining 2 culture negative cases. Gradual resolution of infection was seen in all cases after 35.6 ± 7.8 days. In FK, a debulking biopsy simultaneously with AMT help decrease the microbial load, suppress the inflammatory process, support the corneal integrity, confirm the presence of fungal pathogen.


Asunto(s)
Úlcera de la Córnea , Infecciones Fúngicas del Ojo , Queratitis , Humanos , Voriconazol/uso terapéutico , Antifúngicos/uso terapéutico , Anfotericina B/uso terapéutico , Amnios/trasplante , Estudios Retrospectivos , Procedimientos Quirúrgicos de Citorreducción , Úlcera de la Córnea/microbiología , Queratitis/diagnóstico , Queratitis/tratamiento farmacológico , Queratitis/cirugía , Infecciones Fúngicas del Ojo/diagnóstico , Infecciones Fúngicas del Ojo/tratamiento farmacológico , Biopsia
17.
Expert Opin Drug Deliv ; 21(2): 187-210, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-38243810

RESUMEN

INTRODUCTION: Amphotericin B (AmB), a promising antifungal and antileishmanial drug, acts on the membrane of microorganisms. The clinical use of AmB is limited due to issues associated with its delivery including poor solubility and bioavailability, instability in acidic media, poor intestinal permeability, dose and aggregation state dependent toxicity, parenteral administration, and requirement of cold chain for transport and storage, etc. AREAS COVERED: Scientists have formulated and explored various covalent conjugates of AmB to reduce its toxicity with increase in solubility, oral bioavailability, and payload or loading of AmB by using various polymers, lipids, carbon-based nanocarriers, metallic nanoparticles, and vesicular carriers, etc. In this article, we have reviewed various conjugates of AmB with polymers and nanomaterials explored for its delivery to give a deep insight regarding further exploration in future. EXPERT OPINION: Covalent conjugates of AmB have been investigated by scientists, and preliminary in vitro and animal investigations have given successful results, which are required to be validated further with systematic investigation on safety and therapeutic efficacy in animals followed by clinical trials.


Asunto(s)
Anfotericina B , Nanoestructuras , Animales , Anfotericina B/uso terapéutico , Anfotericina B/toxicidad , Antifúngicos/uso terapéutico , Polímeros , Solubilidad , Portadores de Fármacos
18.
J Mycol Med ; 34(1): 101462, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38290229

RESUMEN

Keratoplasty represents a risk factor for fungal eye infections, despites the antibacterial actives in the corneal tissue preservation means, it does not contain active substances with antifungal action. Among the most commonly associated fungal agents are the species belonging to the genera Fusarium and Candida. These agents can trigger an infectious process characterized by swift progression associated with high rates of morbidity, causing irreversible damage. Polyene and azole antifungals are the main agents of ocular therapy, however, they demonstrate some limitations, such as their toxicity and fungal resistance. In this context, drug repositioning and the combination of antifungals may be an alternative. Hence, the goal of this study was to investigate the potential activity of clioquinol (CLQ), a derivative of 8-hydroxyquinoline with previously described antifungal activity, along with its triple and quadruple combinations with antifungal agents commonly used in ophthalmic fungal therapy, natamycin (NAT), voriconazole (VRC), and amphotericin B (AMB), against main fungal pathogens in eye infections. The MICs for CLQ ranged from 0.25 to 2.0 µg/mL, for NAT from 4.0 to 32.0 µg/mL, for AMB it ranged from 0.25 to 16.0 µg/mL and for VRC from 0.03125 to 512.0 µg/mL. Among the tested combinations, the VRC-AMB-CLQ combination stands out, which showed a synergistic effect for more than 50 % of the tested strains and did not present antagonistic results against any of them. Toxicity data were similar to those antifungals already used, even with lower potential toxicity. Therefore, both clioquinol and the triple combination VCR-AMB-CLQ exhibited promising profiles for use as active components in corneal tissue preservation medium.


Asunto(s)
Clioquinol , Infecciones Fúngicas del Ojo , Antifúngicos/farmacología , Antifúngicos/uso terapéutico , Voriconazol/farmacología , Voriconazol/uso terapéutico , Anfotericina B/farmacología , Anfotericina B/uso terapéutico , Clioquinol/farmacología , Infecciones Fúngicas del Ojo/tratamiento farmacológico , Infecciones Fúngicas del Ojo/microbiología , Candida , Pruebas de Sensibilidad Microbiana
19.
Int J Surg Pathol ; 32(1): 165-181, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-37143300

RESUMEN

Cryptococcosis is a neglected fungal disease. The scarcity of studies on oral cryptococcosis is certainly due to rarity and/or underreporting of the disease, especially in Brazil. We describe an example of orofacial cryptococcosis affecting a 57-year-old man after heart transplantation, who presented with multiple erythematous ulcers and erosions distributed in the chin, nasal cavity, labial mucosa, hard palate, and buccal vestibule. Computed tomography revealed opacities and micronodules in the lungs. Histopathological features of the oral and pulmonary lesions were compatible with Cryptococcus spp. Amphotericin B and fluconazole were used for treatment during hospitalization and itraconazole for prolonged therapy after hospital discharge. The patient has been under follow up for 6 months without signs of disease. According to a review conducted in PubMed, Web of Science, Scopus, Embase, and LILACS for data analysis of oral cryptococcosis, 26 reports were described in the literature. Predilection for men was observed (85%), with a male:female ratio of 5.5:1. The mean age of the individuals was 49 ± 15.3 years. Oral cryptococcosis mostly presented as an ulcer (n = 17). The palate and tongue were the most affected sites (n = 9 for each). Amphotericin B was the primary therapy utilized in most patients. Seventeen (65%) individuals survived. Knowledge of the clinicodemographic aspects of oral cryptococcosis is important for clinicians in decision making and surveillance.


Asunto(s)
Criptococosis , Adulto , Femenino , Humanos , Masculino , Persona de Mediana Edad , Anfotericina B/uso terapéutico , Antifúngicos/uso terapéutico , Criptococosis/diagnóstico , Criptococosis/tratamiento farmacológico , Criptococosis/microbiología , Fluconazol/uso terapéutico
20.
Artículo en Inglés | MEDLINE | ID: mdl-37088689

RESUMEN

INTRODUCTION: Fungal urinary tract infections predominantly affect the critically ill premature infant and those with urogenital tract abnormalities. Fungal balls are an uncommon complication which require prompt detection and treatment to prevent morbidity and mortality. The evidence on the management of fungus balls in young infants with Candida urinary tract infections is very scarce. METHODS: Case reports and review of the literature. RESULTS: We report two immunocompetent young infants with urogenital abnormalities that received local amphotericin B deoxycholate, and systemic therapy, for the treatment and prevention of Candida urinary tract infection-associated fungus balls. We identified 21 similar cases in the literature, with very limited data about drug compounding, optimal dosages, dwell times and length of treatment. Different management strategies are discussed. CONCLUSIONS: Amphotericin B deoxycholate local irrigations were safe and effective for the therapeutic management and prophylaxis of Candida fungus balls in young infants, in combination with systemic antifungal therapy.


Asunto(s)
Candidiasis , Infecciones Urinarias , Lactante , Recién Nacido , Humanos , Candidiasis/complicaciones , Anfotericina B/uso terapéutico , Infecciones Urinarias/tratamiento farmacológico , Candida
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