Publications by authors named "Bimal Das"

This study evaluates the carbon dioxide (CO) capture capabilities of a novel aqueous blend of N,N-dimethyldipropylenetriamine (DMDPTA) and benzylamine (BA). The solvent properties such density, vapor- liquid equilibrium (VLE) of CO in the solvent, CO absorption enthalpy are evaluated experimentally for solvent composition of (5 mass % DMDPTA+25 mass % BA), (10 mass % DMDPTA+20 mass % BA), and (15 mass % DMDPTA+15 mass % BA). Solvent density were measured in the temperature range of 303 K-333 K and correlated using Redlich-Kister excess molar volume model, with a low average absolute relative deviation (AARD) of 0.

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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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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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  • A study was conducted on 48 aromatic rice genotypes across six seasons in West Bengal, India, to analyze the genetic divergence based on ten morphological characters and yield traits.
  • Significant variations were observed in traits like tillers per plant, grains per panicle, and seed yield, indicating their strong positive correlation with overall seed yield.
  • The genotypes were grouped into six clusters, with Cluster III (Tulaipanji, Patnai, Basmati 1121, Jugal, Bahurupi) and Cluster VI (Kanakchur) showing the highest divergence, while specific genotypes like Shakbhati and Sugandhi were highlighted as potential donors for breeding programs due to their advantageous characteristics.
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  • Drug-resistant Acinetobacter baumannii is a growing concern, and this study assesses the effectiveness of eravacycline and its relationship with the RND-efflux pump system.
  • The study analyzed 48 clinical isolates, revealing that 72.91% were extensively drug-resistant (XDR), with 60.41% susceptible to eravacycline.
  • The findings suggest that eravacycline is a promising option for treating severe infections caused by XDR Acinetobacter, while highlighting the need for better understanding and management of antibiotic resistance.
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  • Human granulocytic anaplasmosis (HGA) is a tick-borne disease increasingly reported in Asia, with a focus on North India, highlighting the need for better diagnosis and reporting.
  • A study screened 467 patients and confirmed 6 cases and 43 probable cases, revealing that one patient developed a fatal opportunistic infection while others responded well to doxycycline treatment.
  • The findings underscore the importance of improving tick surveillance and public health awareness to address the potential underdiagnosis of HGA in the region.
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Grass pea has the potential to become a miracle crop if the stigma attached to it as a toxic plant is ignored. In light of the following, we conducted transcriptome analyses on the high and low ODAP-containing cultivars i.e.

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Introduction: The development of aminoglycoside modifying enzymes (AMEs) and increased efflux activity are considered important aminoglycosides resistance mechanisms.

Aim: This study is focused on the detection of the AMEs gene and assessing the effect of efflux pump inhibitor on the reversal of A. baumannii drug susceptibility.

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Standard urine culture is the gold standard for diagnosing urinary tract infections (UTIs) but fails to differentiate true UTI from asymptomatic bacteriuria, which is important to prevent the overuse of antibiotics. Correlation with the presence or absence of pyuria can be helpful in giving a hint of the true situation. With the help of Laboratory Information System (LIS), patients' urinalysis reports can be conveniently accessed and compared simultaneously with appropriate reports.

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Post vaccination with Covaxin (BBV152), Serum from healthcare professionals of Microbiology Department at apex tertiary referral hospital of India were tested for SARS-CoV-2 specific IgG antibodies. 70% individuals at 14-30 days, 63.1% individuals at 30-60 days but only 36.

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Background: Rickettsial pathogens are Gram-negative, obligate intracellular bacteria. They are transmitted by arthropods and are responsible for a wide variety of disease, from minor to life-threatening, which have a global effect on human health. Limited data are available on the prevalence of rickettsial diseases from India, and the disease epidemiology is not fully described.

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Background & Objectives: Multidrug-resistant (MDR) Acinetobacter baumannii is a serious threat for human health worldwide. The studies on agents targeting A. baumannii are imperative due to identified A.

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Disc diffusion testing by Kirby-Bauer technique is the most used method for determining antimicrobial susceptibility in microbiological laboratories. The current guidelines by The Clinical and Laboratory Standards Institute (CLSI) 2022 specify using an 18- to 24-h growth for testing by disc diffusion. We aim to determine if using an early growth (6 h and 10 h) would produce comparable results, thus ultimately leading to reduced turnaround time.

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  • Urinary tract infections (UTIs) are common in children, and the rise of extended-spectrum beta-lactamases (ESBLs) complicates treatment options for these infections.
  • The study analyzed E. coli isolates from children with UTIs using advanced techniques to assess their resistance profiles and genetic makeup.
  • Findings revealed that E. coli was the most prevalent pathogen, with significant resistance observed in some strains, highlighting the spread of multidrug-resistant genes among pediatric patients in community health settings.
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The diagnosis of pediatric tuberculosis (TB) remains a major challenge, hence the evaluation of new tools for improved diagnostics is urgently required. We investigated the serum metabolic profile of children with culture-confirmed intra-thoracic TB (ITTB) (n = 23) and compared it with those of non-TB controls (NTCs) (n = 13) using proton NMR spectroscopy-based targeted and untargeted metabolomics approaches. In targeted metabolic profiling, five metabolites (histidine, glycerophosphocholine, creatine/phosphocreatine, acetate, and choline) differentiated TB children from NTCs.

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Background: The immunomodulatory effects of vitamin D are widely recognized and a few studies have been conducted to determine its utility in the treatment of tuberculosis, with mixed results. This study was conducted to see if vitamin D supplementation in patients with active pulmonary tuberculosis (PTB) in the Indian population contributed to sputum smear and culture conversion as well as the prevention of relapse.

Methods: This randomized double-blind placebo-controlled trial was conducted in three sites in India.

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Background: It has been more than 17 years since the introduction of free ART in India. At this point, it would be prudent to look at the factors associated with the survival of persons living with human immunodeficiency virus (HIV)/acquired immunodeficiency syndrome (AIDS) (PLHA) who are already enrolled in the ART program.

Methods: PLHAs enrolled from antiretroviral therapy (ART) centers located in three different cities in India - Delhi, Pune and Kolkata, and were followed up at six monthly intervals monitoring the WHO stage, CD4 counts, complete blood counts, and liver and kidney function tests, for a duration of three years.

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Background And Objectives: Urinary tract infection is one of the most common bacterial infections causing high morbidity and mortality. The alarming rise of multidrug-resistant uropathogens worldwide forced the clinician to rethink the old drugs like Fosfomycin for its therapeutic management. Our objective was to compare agar dilution, disc diffusion and E-test method for antimicrobial susceptibility testing of Fosfomycin against different drug-resistant uropathogens.

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Background: Indiscriminate and widespread use of antibiotics has resulted in emergence of many antibiotic-resistant organisms. Antibiotic administration during pregnancy is mostly avoided, unless there is compelling medical condition. We hypothesized that the uropathogens isolated from pregnant women would be more susceptible to antibiotics compared to those isolated from nonpregnant women, thus will be helpful in formulating separate empiric guideline for pregnant women based on the resistance pattern.

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