Publications by authors named "Xess I"

Therapeutic and prophylactic use of antifungals is rising continuously. However, lack of awareness of diagnostic and treatment guidelines and limited laboratory modalities are leading to inappropriate use. This study assessed the impact of an institutional antifungal stewardship program on antifungal use practices and patient outcome.

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Article Synopsis
  • Invasive candidiasis (IC) is a major concern in hospitals, often difficult to diagnose due to limitations in blood culture methods.
  • A study evaluated the effectiveness of the FungiXpert® BDG Detection Kit for diagnosing IC, showing it had a sensitivity of 60.52% and specificity of 81.81% among 80 patients tested.
  • Results indicated that higher BDG levels correlated with more severe outcomes, suggesting the kit could be useful for diagnosis, especially in resource-limited settings.
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Objective: The antifungal audit aimed to evaluate antifungal usage in a tertiary care center. It focused on patient profiles, the appropriateness of antifungal use, associated adverse drug reactions, reasons for suboptimal usage, and the economic burden caused by prolonged non-optimal antifungal use.

Methodology: Conducted at All India Institute of Medical Sciences, New Delhi, India from January 2019 to December 2020, the study evaluated systemic antifungal use in 100 hospitalized adults with invasive fungal infections.

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Owing to their inherent resistance to different classes of antifungals, early identification of Fusarium spp. is crucial. In this study, 10 clinical isolates were included from patients with invasive fusariosis involving lungs, sinuses, or both.

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A fifteen-year-old boy was brought to emergency department with complaints of altered sensorium, aphasia and right sided hemiparesis following severe dengue one month back. On physical examination, tone was flaccid and power was diminished in right upper and lower limbs. Reflexes were diminished in all four limbs.

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Objective: MALDI-TOF-MS facilitates the identification of microorganisms from positive cultures in a timely and accurate manner. It eliminates the necessity for the application of biochemicals and operates on the principle of proteomics. It decreases the time required to report culture results.

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The complete genome assembly of strains B11103, B11221, and B11244 is reported in this manuscript. These strains represent the three geographical clades, namely, South Asian (Clade I), South African (Clade III), and South American (Clade IV).

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Background: & objective: The existence of visually identical cryptic Aspergillus species that can be distinguished only by molecular techniques is becoming more widely acknowledged. For the majority of antifungal drugs, these are known to exhibit a greater minimal inhibitory concentration in vitro. For the purpose of receiving the proper care, it is crucial to identify these species at right time.

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Rhino-orbital-cerebral mucormycosis (ROCM) is linked to uncontrolled diabetes, diabetic ketoacidosis, iron overload, corticosteroid therapy, and neutropenia. This study evaluated a commercial real-time PCR system's effectiveness in detecting Mucorales from nasal swabs in 50 high-risk patients. Nasal swab PCR showed 30% positivity, compared to 8% with KOH microscopy.

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Article Synopsis
  • There is a pressing need for new antifungal treatments against Mucorales due to the limited effectiveness of existing agents.
  • This study evaluates the antifungal effects of native lactoferrin (LF) and its fragments against common Mucorale species and examines their synergy with established antifungals.
  • Results indicate that native LF, particularly in combination with Amphotericin B, demonstrates significant potential as a therapeutic agent against Mucorales.
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Unusual fungi, encountered infrequently in practice, present a significant diagnostic challenge, leading to potential delays in diagnosis and treatment. This study aims to describe a number of cases, where infections were caused by rare yeast pathogens. Organisms isolated included rare Candida species, Geotrichum, Lodderomyces and Trichosporon species.

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  • Chronic pulmonary aspergillosis (CPA) can occur in patients with newly diagnosed pulmonary tuberculosis (P.TB), both at the time of diagnosis and during treatment.
  • In a study with 255 newly diagnosed P.TB patients, 11.1% tested positive for anti-Aspergillus IgG at the beginning, which increased to 27.8% by the end of treatment.
  • The research emphasizes the need to monitor P.TB patients for CPA if they show persistent or new symptoms during therapy and suggests further studies to determine if additional antifungal treatment is necessary.
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A 3-year-old patient in India experiencing headaches and seizures was diagnosed with a fungal infection, initially misidentified as Cladophialophora bantiana. Follow-up sequencing identified the isolate to be Fonsecaea monophora fungus. This case demonstrates the use of molecular methods for the correct identification of F.

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  • A study analyzed mixed mould infections in patients with COVID-19-associated pulmonary mucormycosis (CAPM) to determine the prevalence of co-existing COVID-19-associated pulmonary aspergillosis (CAPA) and its impact on early mortality.
  • Among 105 patients with CAPM, 20% had mixed mould infections, and those with CAPA experienced significantly higher early mortality rates (42.9%) compared to those without (17.9%).
  • The findings suggest that co-existing CAPA worsens the prognosis for CAPM patients, highlighting the need for further research on mixed mould infections globally.
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Coronavirus disease 2019 (COVID-19) associated mucormycosis (CAM) was reported predominantly from India during the second wave of COVID-19  and has a high mortality rate. The present study aims to understand the fungal community composition of the nasopharyngeal region of CAM-infected individuals and compare it with severe COVID-19 patients and healthy controls. The fungal community composition was decoded by analyzing the sequence homology of the internal transcribed spacer-2-(ITS-2) region of metagenomic DNA extracted from the upper respiratory samples.

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Introduction: Invasive mould infections (IMIs) are a leading cause of death in patients with compromised immune systems. Proven invasive mould infection requires detection of a fungus by histopathological analysis of a biopsied specimen, sterile culture, or fungal DNA amplification by PCR in tissue. However, the clinical performance of a PCR assay on blood samples taken from patients suspected of invasive mould disease has not been fully evaluated, particularly for the differential diagnosis of invasive aspergillosis (IA) and invasive Mucormycosis (IM).

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A 3-year-old boy presented with acute headache, vomiting and right focal clonic seizures without history of fever, joint pain or altered sensorium. Neuroimaging showed multifocal contrast enhancing lesions with significant perilesional edema. CECT chest and abdomen showed multiple variable sized nodules in the lungs and hypodense lesion in liver with mesenteric lymphadenopathy.

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Background: Fungal infections are now a great public health threat, especially in those with underlying risk factors such as neutropenia, diabetes, high-dose steroid treatment, cancer chemotherapy, prolonged intensive care unit stay, and so on, which can lead to mycoses with higher mortality rates. The rates of these infections have been steadily increasing over the past 2 decades due to the increasing population of patients who are immunocompromised. However, the data regarding the exact burden of such infection are still not available from India.

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Article Synopsis
  • Mucormycosis is a rare and serious fungal infection that is hard to diagnose early due to lengthy and complex testing methods.
  • A new rapid diagnostic method using Loop-mediated Isothermal Amplification (LAMP) has been developed, which is highly sensitive and doesn't require complicated equipment.
  • The study introduces a magnetic nanoparticle-based LAMP assay that targets a specific gene related to Mucorales, demonstrating quick detection of the infection in under 45 minutes using blood and urine samples from patients.
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Background: Bronchoalveolar lavage (BAL) galactomannan (GM) is commonly used to diagnose Aspergillus-related lung diseases. However, unlike serum GM, which is measured in undiluted blood, BAL-GM is estimated using variable aliquots and cumulative volume of instillates during bronchoscopy.

Objective: Since different studies have reported varying diagnostic accuracy and cut-offs for BAL-GM in CPA, we hypothesized that the total volume of instillate and 'order/label' of aliquots significantly affects the BAL-GM values, which was evaluated as part of this study.

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A well-structured digital database is essential for any national priority project as it can provide real-time data analysis and facilitate quick decision making. In recent times, particularly after the COVID-19 pandemic, invasive fungal infections (IFIs) have emerged as a significant public health challenge in India, affecting vulnerable population, including immunocompromised individuals. The lack of comprehensive and well-structured data on IFIs has hindered efforts to understand their true burden and optimize patient care.

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Introduction: Voriconazole is a triazole anti-fungal with non-linear kinetics and a narrow therapeutic range. The objective of our study was to monitor the voriconazole serum levels in children with hematological malignancy and clinically suspected invasive fungal infections.

Methods: The study was a prospective, randomized controlled trial conducted from June 2016 to December 2017.

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