Publications by authors named "Samiran Bandyopadhyay"

This study was conducted to detect the occurrence and phenotypic resistance pattern of extended spectrum beta-lactamase (ESBL)-producing Enterobacteriaceae in livestock using docking-based analysis to reveal the classes of antibiotics against which ESBL-producers are active. Rectal swabs from healthy cattle (n = 100), goats (n = 88), and pigs (n = 66) were collected from backyard farms in Andaman and Nicobar Island (India). In total, 304 isolates comprising Escherichia coli (131), Salmonella (75), and Klebsiella pneumoniae (98) were recovered.

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The current study investigated the impact of nutmeg essential oil (NEO) and tea tree essential oil (TTEO) on the preservation of raw chicken fillets during nine days of refrigerated storage study. The primary aim was to explore the antioxidant and antimicrobial properties of these essential oils (EOs) and assess their ability to extend the shelf life of poultry meat. Gas chromatography-mass spectrometry (GC-MS) was utilized to identify the chemical compositions of NEO and TTEO, revealing the presence of compounds like myristicin and terpenoids, known for their antimicrobial and antioxidant activities.

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The cure rate of Staphylococcus aureus mastitis by conventional antibiotic therapy is very poor. Diflunisal (DIF), a difluorophenol derivative of salicylic acid, is reported to have strong anti-bacterial and anti-inflammatory effects against S. aureus infection.

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Background: Tuberculosis in cattle is caused by Mycobacterium tuberculosis complex (MTBC) species. Apart from MTBC, different Nontuberculous Mycobacteria (NTM) species have also been isolated from cattle. The presence of NTM infection in bovines makes the diagnosis of bovine tuberculosis (bTB) a cumbersome task.

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Commercial broiler farms face challenges of extended spectrum beta-lactamase (ESBL)-producing Escherichia coli transmitted from both vertical and horizontal routes. Understanding the dynamics of ESBL-E. coli transmission in compromised biosecurity settings of small-scale rural poultry farms is essential.

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This study depicts the drug-resistance and phylogenomic characteristics of 365 (EC) and 76 (KP) isolated from stray dogs (293) in and around Kolkata, India. Initial screening found 59 isolates, including 48 and 11 KP multidrug resistant, which included 33 extended-spectrum β-lactamase, 41 AmpC β-lactamase and 18 metallo-β-lactamase producers carrying (11) and (7) genes. Majority of them had the resistant genes such as (33), (18), (4), (17), (2), (2), (15), (13), (2) and (2), S (15), B (3), (14), A (26), B (14), -1 (25), A (2) and B (6), in addition to adherence genes such as A (33), A (27), C (13), A (33), A (38), and S (39).

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Article Synopsis
  • The study examines the presence of antibiotic-resistant bacteria in cow and buffalo milk from Haryana and Assam, India, highlighting a 10% prevalence of β-lactamase genes in samples.
  • Higher rates of these resistant genes were found in Haryana (13%) compared to Assam (7%), with specific genes linked to AmpC, ESBL, and MBL production being identified.
  • The research underscores the health risks of consuming dairy products contaminated with resistant bacteria, emphasizing the need for better antibiotic use and monitoring in the dairy industry.
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Inter-disciplinary collaborations are now considered as key factors for integrated health system strengthening. Its application in the domain of One Health needs more milestones to achieve. Other than the human health sector, the antimicrobials are used in food animals and aquaculture for therapy, prophylaxis and growth promotion which significantly contributes to the development of antimicrobial resistance.

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Bovine milk and milk products may contain pathogens, antimicrobial resistant bacteria, and antibiotic residues that could harm consumers. We analyzed 282 gram-positive isolates from milk samples from dairy farmers and vendors in Haryana and Assam, India, to assess the prevalence of methicillin-resistant staphylococci using microbiological tests, antibiotic susceptibility testing, and genotyping by PCR. The prevalence of genotypic methicillin resistance in isolates from raw milk samples was 5% [95% confidence interval, CI (3-8)], with 7% [CI (3-10)] in Haryana, in contrast to 2% [CI (0.

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Objectives: The present study was conducted to detect the occurrence of β-lactamase and biofilm-producing , and in broilers and native fowl reared in the Andaman and Nicobar Islands, India. The study also included molecular docking experiments to confirm the nature of the catalytic domains found in the β-lactamase variants obtained and to reveal the clonal relationship of the isolates with human clinical strains from the database.

Materials And Methods: A total of 199 cloacal swabs were collected from five poultry breeds/varieties (broiler, , and layer) in three districts of the Andaman and Nicobar Islands.

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A cross-sectional study covering four agro-climatic zones of West Bengal, India, was carried out to understand the risk-factors, antimicrobial resistance mechanism and clustering of the resistance characteristics of Escherichia coli isolated from healthy (170) and diarrhoeic (74) goats reared under intensive (52) and semi-intensive (192) farming practices. Of the 488 E. coli isolates, the majority, including the extended spectrum (n: 64, 13.

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Article Synopsis
  • Antimicrobial resistance in bacteria is increased by the use of antimicrobials in humans, pets, and livestock, which was studied in healthy dogs, cats, sheep, and goats in India to understand E. coli strains' resistance patterns.
  • A high prevalence (76.47%) of ESBL (Extended-Spectrum Beta-Lactamase) producing E. coli was found, with pets showing more significant resistance than livestock, specifically against various antibiotics like tetracycline and azithromycin.
  • Molecular docking demonstrated that certain β-lactamase enzymes had a strong binding affinity for cefotaxime and cefpodoxime, while phylogenetic analysis indicated a link between animal E. coli strains and human clinical strains, raising concerns
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Background: Antimicrobial resistance (AMR) is a global public health threat. The indiscriminate use of antibiotics in the animal health sector contributes to increasing rates of AMR and studies involving dairy farmers in India have found knowledge levels regarding antibiotics and AMR to be very low. The purpose of this study was to assess different methods to raise awareness and knowledge about AMR and antibiotic use among dairy farmers, paravets (veterinary assistants), and veterinarians.

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This study details about the phenotypic and molecular characteristics of multidrug-resistant (MDR) Escherichia coli in the fresh community pond water (n = 257) collected from three districts of West Bengal, India. In total, 57 isolates were MDR of which 38 emerged as extended spectrum and 7 as AmpC-type β-lactamase producers in phenotypic assay. Among β-lactamase genes, blaCTXM-1was predominant (87.

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The use and misuse of antibiotics in both humans and animals contributes to the global emergence of antimicrobial resistant (AMR) bacteria, a threat to public health and infection control. Currently, India is the world's leading milk producer but antibiotic usage within the dairy sector is poorly regulated. Little data exists reflecting how antibiotics are used on dairy farms, especially on small-scale dairy farms in India.

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Consumers are increasingly interested in nutritious, safe and healthy muscle food products with reduced salt and fat that benefit their well-being. Hence, food processors are constantly in search of natural bioactive ingredients that offer health benefits beyond their nutritive values without affecting the quality of the products. Mushrooms are considered as next-generation healthy food components.

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This study describes comparative occurrence and characterization of multidrug-resistant (MDR) and (KP) in healthy cattle (HC) and cattle with diarrhea (DC) in India. During 2018-2020, 72 MDR isolates, including 35 (DC: 27; HC 8) and 37 (DC: 34; HC: 3), from 251 rectal swabs (DC: 219; HC: 32) were investigated for extended-spectrum beta-lactamase (ESBL), AmpC type β-lactamase and carbapenemase production, antimicrobial susceptibility profile, biofilm production, and efflux pump activity. Fifty-five MDR isolates were ESBL producers (ESBLPs) (DC: 50; HC: 5) and ESBLPs from DC were coresistant to multiple antibiotics.

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The emergence and spread of carbapenem-resistant Enterobacteriaceae (CRE) are perceived as a serious public-health threat world-wide. Despite sporadic reports, no systemic study has been carried out on CRE in companion animals in Indian subcontinent. In total, 237 canine specimens collected from five veterinary polyclinics in and around Kolkata were analyzed for isolation, antimicrobial resistance profiling and molecular characterization of carbapenem-resistant (CR) E.

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Recently, there has been growing interest in implementing innovative nanoscience-based technologies to improve the health, safety, and quality of food products. A major thrust in this area has been to use nanoemulsions because they can easily be formulated with existing food ingredients and technologies. In particular, oil-in-water nanoemulsions, which consist of small oil droplets (<200 nm) dispersed in water, are being utilized as delivery systems for various hydrophobic substances in foods, including nutrients, nutraceuticals, antioxidants, antimicrobials, colors, and flavors.

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Antimicrobial resistance (AMR) leads to enormous financial losses from issues such as high morbidity, mortality, man-days lost, hospital length of stay, health-care, and social costs. In humans, over prescription of antimicrobials, which is presumably higher during COVID, has been identified as the major source of selection for antimicrobial resistant bacteria; however, use of antimicrobials in food and companion animals, fish, and vegetables, and the environmental resistance gene pool, also play important roles. The possibilities of unnecessary use of antibiotics as prophylaxis during and after COVID in livestock and companion animals exist in low-and middle-income countries.

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Background: Antimicrobial resistance (AMR) is a major global public health issue. In India, access to medicines is poorly regulated and therefore antibiotics in dairy cattle are commonly used by farmers without consulting with veterinarians. This study was conducted to understand practices and knowledge related to antibiotic use and AMR among dairy farmers and veterinary professionals in selected urban and peri-urban areas of India.

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Background: Livestock production, particularly the dairy sector, is important for food and nutritional wellbeing of communities in India, it supports livelihoods of many farmers, and contributes to the economy of the country. India is a high consumer of antibiotics and antimicrobial resistant (AMR) bacteria are a major public health concern.

Objectives: Our objectives were to identify animal health and drug use practices that may contribute to emergence and spread of AMR in the country, review previous AMR- mitigation strategies, and discuss "theory of change" as an approach to informing the choice of interventions.

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Chronic arsenic poisoning is one of the serious health hazards in West Bengal, India, and Bangladesh. It occurs due to contaminated subsoil water. The aim of this study is conducted to find out the ameliorative effect of turmeric and P.

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Article Synopsis
  • The study evaluated dragon fruit peel (DFP) powder as an antioxidant dietary fiber in chicken nuggets, testing two concentrations (1.5% and 3.0%) over 20 days of refrigeration.
  • DFP, rich in dietary fiber and phenolics, improved the nutritional profile of the nuggets by increasing protein and fiber content while reducing fat, and also enhanced quality by stabilizing emulsions and cooking yield.
  • Results showed that DFP lowered lipid oxidation, improved appearance scores, and maintained product acceptability, suggesting it can be a beneficial ingredient in muscle foods.
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The present work investigated the efficacy of Moringa flower (MF) extract to develop a functional chicken product. Three groups of cooked chicken nuggets-control (C), T1 (with 1% MF) and T2 (2% MF)-were elaborated and their physicochemical, nutritional, storage stability and sensory attributes were assessed during refrigerated storage at 4°C up to 20 days. In addition, MF extracts were characterised in terms of chemical composition, total phenolic content and its components using high-performance liquid chromatography with a diode-array detector (HPLC-DAD), dietary fibre and antioxidant capacity.

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