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Datta B, Bhatt P, Dutta G. A Redox Mediator-Free Highly Selective and Sensitive Electrochemical Aptasensor for Patulin Mycotoxin Detection in Apple Juice Using Ni-NiO Pseudocapacitive Nanomaterials. J Agric Food Chem 2024; 72:5993-6005. [PMID: 38450613 DOI: 10.1021/acs.jafc.3c07886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
Pseudocapacitive nanomaterials have recently gained significant attention in electrochemical biosensors due to their rapid response, long cycle life, high surface area, biomolecule compatibility, and superior energy storage capabilities. In our study, we introduce the potential of using Ni-NiO nanofilm's pseudocapacitive traits as transducer signals in electrochemical aptasensors. Capitalizing on the innate affinity between histidine and nickel, we immobilized histidine-tagged streptavidin (HTS) onto Ni-NiO-modified electrodes. Additionally, we employed a biolayer interferometry-based SELEX to generate biotinylated patulin aptamers. These aptamers, when placed on Ni-NiO-HTS surfaces, make a suitable biosensing platform for rapid patulin mycotoxin detection in apple juice using electrochemical amperometry in microseconds. The novelty lies in optimizing pseudocapacitive nanomaterials structurally and electrochemically, offering the potential for redox mediator-free electrochemical aptasensors. Proof-of-concept is conducted by applying this surface for the ultrasensitive detection of a model analyte, patulin mycotoxin. The aptamer-functionalized bioelectrode showed an excellent linear response (10-106 fg/mL) and an impressive detection limit (1.65 fg/mL, +3σ of blank signal). Furthermore, reproducibility tests yielded a low relative standard deviation of 0.51%, indicating the good performance of the developed biosensor. Real sample analysis in freshly prepared apple juice revealed no significant difference (P < 0.05) in current intensity between spiked and real samples. The sensor interface maintained excellent stability for up to 2 weeks (signal retention 96.45%). The excellent selectivity, stability, and sensitivity of the electrochemical aptasensor exemplify the potential for using nickel-based pseudocapacitive nanomaterials for a wide variety of electrochemical sensing applications.
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Affiliation(s)
- Brateen Datta
- NanoBiosensors and Biodevices Lab, School of Medical Sciences and Technology, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Praveena Bhatt
- Department of Microbiology and Fermentation Technology, CSIR-Central Food Technological Research Institute (CFTRI), Mysore 570020, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, UP 201002, India
| | - Gorachand Dutta
- NanoBiosensors and Biodevices Lab, School of Medical Sciences and Technology, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
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Ganesan VV, Nair DT, Bhatt P, Sturla SJ, Serrano JF. Call for Papers for Special Issue Advancing Science in India: Chemistry and Toxicology. Chem Res Toxicol 2023; 36:1829. [PMID: 38105684 DOI: 10.1021/acs.chemrestox.3c00356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2023]
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Gade PS, Sonkar RM, Bhatt P. Correction: Graphene oxide-mediated fluorescence turn-on GO-FAM-FRET aptasensor for detection of sterigmatocystin. Anal Methods 2023; 15:6610. [PMID: 37990885 DOI: 10.1039/d3ay90145a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2023]
Abstract
Correction for 'Graphene oxide-mediated fluorescence turn-on GO-FAM-FRET aptasensor for detection of sterigmatocystin' by Pravin Savata Gade et al., Anal. Methods, 2022, 14, 3890-3897, DOI: https://doi.org/10.1039/D2AY01405J.
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Affiliation(s)
- Pravin Savata Gade
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad - 201002, India
- Microbiology and Fermentation Technology Department, CSIR-Central Food Technological Research Institute, Mysore, 570020, India
| | - Rutuja Murlidhar Sonkar
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad - 201002, India
- Microbiology and Fermentation Technology Department, CSIR-Central Food Technological Research Institute, Mysore, 570020, India
| | - Praveena Bhatt
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad - 201002, India
- Microbiology and Fermentation Technology Department, CSIR-Central Food Technological Research Institute, Mysore, 570020, India
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Sonkar R, Gade PS, Mudliar SN, Bhatt P. Green Downstream Processing Method for Xylooligosaccharide Purification and Assessment of Its Prebiotic Properties. ACS Omega 2023; 8:42815-42826. [PMID: 38024717 PMCID: PMC10652722 DOI: 10.1021/acsomega.3c05714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 10/05/2023] [Accepted: 10/09/2023] [Indexed: 12/01/2023]
Abstract
Xylooligosaccharides (XOS) obtained from lignocellulosic biomass after autohydrolysis primarily consist of lignin-derived impurities and autogenerated inhibitors like furfural, hydroxymethylfurfural, and acetic acid. In this study, graphene oxide-mediated purification (GOMP), a novel and environmentally friendly downstream processing method, was developed for the purification of XOS from hydrolysate obtained after ozone-assisted autohydrolysis of wheat bran. GOMP resulted in appreciable recovery of total XOS from the hydrolysate (73.87 ± 4.25%, DP2-6) with near complete removal of autogenerated inhibitors (furfural 85.42%, HMF 87.38%, and acetic acid 84.0%). Recovery of XOS by GOMP was higher than the conventional membrane purification technique (44.07 ± 0.92%) and activated charcoal treatment (72.76 ± 0.84%) along with comparatively higher removal of inhibitor compounds. GOMP results in the selective adsorption of inhibitors on the graphene oxide matrix from the XOS-rich hydrolysate, resulting in its purification and concentration. The prebiotic function of the obtained XOS fractions (DP2-4.48%, DP3-39.69%, DP4-36.13%, DP5-8.38%, and DP6-13.10%) was evaluated, indicating the growth stimulation of tested probiotic cultures and differential utilization of XOS oligomers DP3 and DP4 and complete consumption of DP2, DP5, and DP6 along with short-chain fatty acids as a major fermentation product. These findings suggest that GOMP, which employs a common substance (i.e., graphene oxide) used in water treatment, exhibits potential as an efficient and economically viable single-step methodology for XOS purification.
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Affiliation(s)
- Rutuja
Murlidhar Sonkar
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad- 201002, India
- Microbiology
and Fermentation Technology Department, CSIR-Central Food Technological Research Institute, Mysore 570020, India
| | - Pravin Savata Gade
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad- 201002, India
- Microbiology
and Fermentation Technology Department, CSIR-Central Food Technological Research Institute, Mysore 570020, India
| | - Sandeep N. Mudliar
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad- 201002, India
- Plant
Cell Biotechnology Department, CSIR-Central
Food Technological Research Institute, Mysore 570020, India
| | - Praveena Bhatt
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad- 201002, India
- Microbiology
and Fermentation Technology Department, CSIR-Central Food Technological Research Institute, Mysore 570020, India
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Sharma R, Mukherjee M, Bhatt P, Raghavarao KSMS. Rational Truncation of Aptamer for Ultrasensitive Aptasensing of Chloramphenicol: Studies Using Bio-Layer Interferometry. Biosensors (Basel) 2023; 13:660. [PMID: 37367025 DOI: 10.3390/bios13060660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 06/08/2023] [Accepted: 06/12/2023] [Indexed: 06/28/2023]
Abstract
Aptamers are an excellent choice for the selective detection of small molecules. However, the previously reported aptamer for chloramphenicol suffers from low affinity, probably as a result of steric hindrance due to its bulky nature (80 nucleotides) leading to lower sensitivity in analytical assays. The present work was aimed at improving this binding affinity by truncating the aptamer without compromising its stability and three-dimensional folding. Shorter aptamer sequences were designed by systematically removing bases from each or both ends of the original aptamer. Thermodynamic factors were evaluated computationally to provide insight into the stability and folding patterns of the modified aptamers. Binding affinities were evaluated using bio-layer interferometry. Among the eleven sequences generated, one aptamer was selected based on its low dissociation constant, length, and regression of model fitting with association and dissociation curves. The dissociation constant could be lowered by 86.93% by truncating 30 bases from the 3' end of the previously reported aptamer. The selected aptamer was used for the detection of chloramphenicol in honey samples, based on a visible color change upon the aggregation of gold nanospheres caused by aptamer desorption. The detection limit could be reduced 32.87 times (1.673 pg mL-1) using the modified length aptamer, indicating its improved affinity as well as its suitability in real-sample analysis for the ultrasensitive detection of chloramphenicol.
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Affiliation(s)
- Richa Sharma
- Department of Food Engineering, CSIR-Central Food Technological Research Institute (CFTRI), Mysore 570020, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Monali Mukherjee
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Department of Microbiology and Fermentation Technology, CSIR-Central Food Technological Research Institute (CFTRI), Mysore 570020, India
| | - Praveena Bhatt
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Department of Microbiology and Fermentation Technology, CSIR-Central Food Technological Research Institute (CFTRI), Mysore 570020, India
| | - K S M S Raghavarao
- Department of Food Engineering, CSIR-Central Food Technological Research Institute (CFTRI), Mysore 570020, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Department of Chemical Engineering, Indian Institute of Technology (IIT)-Tirupati, Tirupati 517619, India
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Veljanoski D, Tonna I, Barlas R, Abdel-Fattah AR, Almoosawy SA, Bhatt P. Spinal infections in the north-east of Scotland: a retrospective analysis. Ann R Coll Surg Engl 2023; 105:428-433. [PMID: 35904356 PMCID: PMC10149230 DOI: 10.1308/rcsann.2022.0062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/25/2022] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION Spinal infection (SI) is uncommon and patients present with varied clinical features. In this review, the presentation, investigation, treatment and outcome of patients with SI in the north-east of Scotland were assessed. METHODS Electronic medical records of adult patients with SI hospitalised at a health board in the north-east of Scotland between 2014 and 2018 were analysed retrospectively. Collected variables included demographics, presenting clinical features, risk factors, comorbidities, admission blood results, microbiological investigations, imaging, treatment and outcomes. RESULTS Seventy-two patients were included. Mean age (±sd) was 63.3 years (±14.5). The lumbar spine was the most commonly involved region (51.4%). Back pain (84.7%), altered mobility (33.3%) and fever (29.2%) were the most frequent presenting features. Thoracic spine involvement (p = 0.041), urinary symptoms (p = 0.033), cauda equina syndrome (CES) (p = 0.027) and limb weakness (p = 0.026) were associated with poorer outcome. A better outcome was associated with back pain at presentation (p = 0.03) and underlying malignancy (p = 0.045). Diabetes (15.3%), recent falls (15.3%) and immunosuppression (12.5%) were common. A likely causative organism was found in 54 patients (75.0%) and Staphylococcus aureus was isolated in 41.7% of patients. Penicillins were used in 56.3% of patients and 20.8% underwent surgery. Outcomes were full recovery (38.2%), residual symptoms or neurological deficits (50.0%), paraplegia (4.4%) and death (7.4%). CONCLUSIONS Poorer outcomes occurred in patients with thoracic disease, limb weakness, urinary symptoms or CES, whereas better outcomes were associated with the presence of back pain on presentation and malignancy. This analysis highlights the diagnostic and therapeutic challenges of SI, alerting clinicians to key factors associated with prognosis.
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Gade PS, Sonkar RM, Bhatt P. Graphene oxide-mediated fluorescence turn-on GO-FAM-FRET aptasensor for detection of sterigmatocystin. Anal Methods 2022; 14:3890-3897. [PMID: 36165950 DOI: 10.1039/d2ay01405j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Sterigmatocystin (STC) is a toxic fungal secondary metabolite recognized by the FAO and WHO as a genotoxic and carcinogenic substance. STC contaminates several foods and feed commodities, posing a health risk to humans. The present study proposes to develop a graphene oxide-mediated aptasensor platform for the one-step detection of STC. In this study, DNA aptamers were generated against STC by using a target immobilization-free graphene oxide (GO)-SELEX protocol. The champion aptamers were subjected to in silico maturation using a genetic algorithm to improve binding affinity. Further, MSA-C6 and STC interactions were characterized by MD simulation, bio-layer interferometry (KD 27.9 nM) and flow cytometry. GO was immobilized on a polypropylene surface and functionalized with FAM labelled MSA-C6 to develop a simple one-step fluorescence turn-on aptasensor. The linear detection range of the aptasensor was found to be 80-720 ppb with LOD 23.56 ± 4.93 ppb and LOQ 132.43 ± 3.25 ppb. Insignificant interference of salts and detergents as well as negligible cross-reactivity with other structurally similar mycotoxins were observed. Recovery studies in simulated contaminated samples indicated appreciable recoveries (71-89%) using aptasensing assay. The results of the study indicate the successful development of a simple one-step detection platform for STC, useful for the measurement and monitoring of samples for the presence of STC. It also reports a high-affinity aptamer, which can be exploited in other sensing platforms.
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Affiliation(s)
- Pravin Savata Gade
- Academy of Scientific and Innovative Research, Ghaziabad-201002, India
- Microbiology and Fermentation Technology Department, CSIR-Central Food Technological Research Institute, Mysore, 570020, India
| | - Rutuja Murlidhar Sonkar
- Academy of Scientific and Innovative Research, Ghaziabad-201002, India
- Microbiology and Fermentation Technology Department, CSIR-Central Food Technological Research Institute, Mysore, 570020, India
| | - Praveena Bhatt
- Academy of Scientific and Innovative Research, Ghaziabad-201002, India
- Microbiology and Fermentation Technology Department, CSIR-Central Food Technological Research Institute, Mysore, 570020, India
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Mukherjee M, Appaiah P, Sistla S, Bk B, Bhatt P. Bio-Layer Interferometry-Based SELEX and Label-Free Detection of Patulin Using Generated Aptamer. J Agric Food Chem 2022; 70:6239-6246. [PMID: 35546052 DOI: 10.1021/acs.jafc.2c01591] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
This study reports a novel bio-layer interferometry (BLI)-based SELEX for generation of high affinity aptamers against patulin. Unlike conventional SELEX, the present method enabled real-time monitoring of increasing affinity of the oligonucleotides to the toxin. After seven rounds of selection cycles, the enriched pool of aptamers was characterized by cloning and sequencing and clustered into two families based on similarity. Two sequences, PAT C3 and PAT C4, each belonging to different clades, were further evaluated for their binding affinity. SPR studies determined the dissociation constants (KD) of 8.2 × 10-8 and 1.9 × 10-7 M for aptamer PAT C3 and PAT C4, respectively. The highest affinity PAT C3 aptamer was used to develop a patulin BLI aptasensor, which indicated a linear detection range from 0.045 to 100 ng/mL [limit of detection (LOD) = 0.173 ng/mL; limit of quantification (LOQ) = 0.526 ng/mL]. The aptasensor displayed no cross-reactivity with its structural analogue isopatulin or any of the other mycotoxin groups tested. Spiking studies in simulated apple juice samples showed recoveries in the range of 82.11 to 100.23%, indicating good sensor performance. The study is the first report of BLI-based SELEX for a non-protein toxin, which resulted in the generation of high affinity aptamers and development of an aptasensor which can have wide application in the food industry for high throughput screening of samples for patulin contamination within a short span of time.
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Affiliation(s)
- Monali Mukherjee
- Microbiology & Fermentation Technology Department, CSIR-Central Food Technological Research Institute (CFTRI), Mysuru 570020, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Prakruthi Appaiah
- Microbiology & Fermentation Technology Department, CSIR-Central Food Technological Research Institute (CFTRI), Mysuru 570020, India
| | - Srinivas Sistla
- Department of Microbiology & Immunology, Stonybrook University, New York, New York 11794, United States
| | - Bettadaiah Bk
- Spices and Flavour Sciences Department, CSIR-Central Food Technological Research Institute (CFTRI), Mysuru 570020, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Praveena Bhatt
- Microbiology & Fermentation Technology Department, CSIR-Central Food Technological Research Institute (CFTRI), Mysuru 570020, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
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Georgiou I, Bhatt P, Bodkin P, Giamouriadis A, Ross S, Walkden J, Olson S, Neelakantan A, Torgersen A, Whibley M, Moleron R. PO-1165 Pattern of recurrence of glioblastoma treated with non-coplanar volumetric modulated arc therapy. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)03129-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Sharma R, Rana A, Sharma V, Mehrotra A, Babu H, Gupta S, Singh R, Tyagi A, Sethi N, Bhatt P, Yadav V, Chopra P, Upadhyay D. Clinical correlation and assessment of olfactory dysfunction with n-butanol in COVID-19 patients: our experience. RHINOL 2022. [DOI: 10.4193/rhinol/21.055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Background: Studies showed olfactory disturbances in COVID patients. This has attracted focus of clinicians as an easy clinical screening tool in suspected population. Material and methods: 70 mild and moderate category COVID-19 RT-PCR positive patients, more than 10 years of age were tested on day of admission for olfaction with serial dilution of n-butanol and asked to grade severity of their olfactory dysfunction according to visual analogue score from 1-10. Results: Fatigue 42 (93.33%), sore throat 37 (82.22%), fever 36 (80%) and dyspnea 23 (51.11%) were the most common symptoms in moderate patients. Diabetes, hypertension and allergy were the three prominent risk factors. At time of admission, n-butanol diagnosed 20 patients having olfactory dysfunction compared to 11 by VAS. Patients tend to grade their dysfunction higher on VAS whereas the n-butanol test classified their olfactory dysfunction lower. Viral load and high CRP were not found to be significantly related with olfactory dysfunction. d-Dimer and LDH levels were found statistically associated with higher grading of olfactory dysfunction detected by n-butanol. Conclusion: The majority of cases developed hyposmia before they were admitted to hospital even before they realized that they were having hyposmia as revealed by n-butanol testing. We should go for objective tests of olfaction.
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Reddy Gajjala RK, Gade PS, Bhatt P, Vishwakarma N, Singh S. Enzyme decorated dendritic bimetallic nanocomposite biosensor for detection of HCHO. Talanta 2022; 238:123054. [PMID: 34801910 DOI: 10.1016/j.talanta.2021.123054] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 09/20/2021] [Accepted: 11/07/2021] [Indexed: 01/23/2023]
Abstract
In recent times, bi- and tri-metallic nanocomposites are being extensively studied to improve the catalytic surface and sensitivity of detection. In this study, we designed a formaldehyde dehydrogenase decorated Cys-AuPd-ErGO nanocomposite with fern like AuPd dendrites deposited on reduced graphene oxide (ErGO) on screen printed electrode (SPE) for determination of NADH and successfully demonstrated its application for detection of HCHO. This biosensor exhibited direct electron transfer by lowering the oxidation potential of NADH from +0.63 V to 0.32 V vs Ag/AgCl, avoiding usage of electron mediators. The sensor LOD was 0.3 μM HCHO with excellent sensitivity of 70 μA/μM/cm2 and linear detection range between 1 μM and 100 μM during chronoamperometric studies at applied over potential of +0.35 V vs Ag/AgCl. The sensor was tested for its performance in simulated HCHO adulterated samples of fish and milk, and appreciable recoveries (88-104%) at tested concentrations indicated good sensor performance. It was also validated against conventional method of HPLC with highly acceptable correlation coefficient of 0.99, indicating successful fabrication of a simple, "on site" disposable sensor for HCHO detection. The developed biosensor can also find wide application in quantitative measurement of NADH and analytes involved in reactions with the co-enzyme.
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Affiliation(s)
- Rajendra Kumar Reddy Gajjala
- Microbiology & Fermentation Technology Department, CSIR-Central Food Technological Research Institute (CFTRI), Mysuru, 570020, India
| | - Pravin Savata Gade
- Microbiology & Fermentation Technology Department, CSIR-Central Food Technological Research Institute (CFTRI), Mysuru, 570020, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, UP, 201002, India
| | - Praveena Bhatt
- Microbiology & Fermentation Technology Department, CSIR-Central Food Technological Research Institute (CFTRI), Mysuru, 570020, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, UP, 201002, India.
| | - Neelam Vishwakarma
- Agrionics- Post Harvest Technologies, CSIR- Central Scientific Instruments Organization (CSIO), Chandigarh, India, 160030; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, UP, 201002, India
| | - Suman Singh
- Agrionics- Post Harvest Technologies, CSIR- Central Scientific Instruments Organization (CSIO), Chandigarh, India, 160030; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, UP, 201002, India
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Cudjoe GA, Ameley A, Ohemeng-Dapaah J, Bhatt P, Donda K, Dapaah-Siakwan F. National trends in the incidence and management of retinopathy of prematurity in the United States, 2009 -2018. J Neonatal Perinatal Med 2022; 15:553-557. [PMID: 35491807 DOI: 10.3233/npm-210826] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
BACKGROUND Retinopathy of prematurity is a major cause of morbidity in preterm infants but population-based studies to evaluate recent trends in incidence in the United States (US) are lacking. Moreover, previous studies did not include the use of anti-Vascular Endothelial Growth Factor medications. The objective was to examine the recent secular trends in the incidence and treatment of severe retinopathy of prematurity (sROP) in the United States (US) from 2009 to 2018. METHODS This was a population-based, serial cross-sectional study that utilized data from the National Inpatient Sample. The inclusion criteria were preterm infants with gestational age (GA) ≤30 weeks and length of stay > 28 days. The primary outcomes were trends in ROP surgery (photocoagulation, cryotherapy, scleral buckling, vitrectomy) and intravitreal injection of therapeutic (anti-VEGF) medications. The Cochrane-Armitage test was used to evaluate trends and P-value < 0.05 was considered significant. RESULTS Out of 279,664 hospitalizations that met the inclusion criteria, 12,942 (4.6%) had sROP. Those with sROP were more likely to have severe intraventricular hemorrhage (12.5% vs 6.1%), bronchopulmonary dysplasia (48.2% vs 25.9%), and pulmonary hypertension (10.7% vs 4.7%). From 2009-2018, sROP significantly increased from 3.4% to 5.3% (P < 0.001), ROP surgery decreased from 36.8% to 11.9% (P < 0.001) while intra-vitreal administration of therapeutic drugs increased from 2% to 7.6% (P < 0.001). CONCLUSION Surgery for sROP decreased while intra-vitreal administration of therapeutic drugs increased in the setting of increasing incidence of sROP in the US. Taken together, these findings suggest a gradual practice change and the long-term outcomes of intra-vitreal agents warrants future study.
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Affiliation(s)
- G A Cudjoe
- Korle Bu Teaching Hospital, Accra, Ghana
| | - A Ameley
- Greater Accra Regional Hospital, Pediatrics, Accra, Ghana
| | | | - P Bhatt
- Department of Pediatrics, United Hospital Center, Bridgeport, WV, USA
| | - K Donda
- Department of Pediatrics, University of South Florida, Tampa, FL, USA
| | - F Dapaah-Siakwan
- Neonatal Intensive Care Unit, Valley Children's Hospital, Madera, CA, USA
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Shubha J, Bhatt P. Functional attributes of polyphenol-rich Woodfordia fruticosa extract: An active ingredient in traditional Indian medicine with nutraceutical potential. J Herb Med 2021. [DOI: 10.1016/j.hermed.2021.100488] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Murlidhar Sonkar R, Savata Gade P, Bokade V, Mudliar SN, Bhatt P. Ozone assisted autohydrolysis of wheat bran enhances xylooligosaccharide production with low generation of inhibitor compounds: A comparative study. Bioresour Technol 2021; 338:125559. [PMID: 34280853 DOI: 10.1016/j.biortech.2021.125559] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 07/08/2021] [Accepted: 07/09/2021] [Indexed: 06/13/2023]
Abstract
In the present study, ozone assisted autohydrolysis (OAAH) was evaluated for enhanced generation of xylooligosaccharide (XOS) from wheat bran. The total XOS yield with optimum ozone dose of 3% (OAAH-3) was found to be 8.9% (w/w biomass) at 110 °C in comparison to 7.96% at 170 °C by autohydrolysis (AH) alone. Although, there was no significant difference in oligomeric composition (DP 2-6), significant decrease in degradation products namely furfural (2.78-fold), HMF (3.15-fold), acrylamide (nil) and acetic acid (1.06-fold), was observed with OAAH-3 as a pretreatment option. There was 1-fold higher xylan to XOS conversion and OAAH-hydrolysate had higher DPPH radical scavenging activity than AH. PCA plots indicated clear enhancement in XOS production and lower generation of inhibitors with decrease in treatment temperature. Results of the study therefore suggest OAAH can be an effective pretreatment option that can further be integrated with downstream processing for concentration and purification of XOS.
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Affiliation(s)
- Rutuja Murlidhar Sonkar
- Academy of Scientific and Innovative Research, Ghaziabad 201002, India; Microbiology and Fermentation Technology Department, CSIR-Central Food Technological Research Institute, Mysore 570020, India
| | - Pravin Savata Gade
- Academy of Scientific and Innovative Research, Ghaziabad 201002, India; Microbiology and Fermentation Technology Department, CSIR-Central Food Technological Research Institute, Mysore 570020, India
| | - Vijay Bokade
- Academy of Scientific and Innovative Research, Ghaziabad 201002, India; Catalysis Division, CSIR-National Chemical Laboratory, Pune 411008, India
| | - Sandeep N Mudliar
- Academy of Scientific and Innovative Research, Ghaziabad 201002, India; Plant Cell Biotechnology Department, CSIR-Central Food Technological Research Institute, Mysore 570020, India
| | - Praveena Bhatt
- Academy of Scientific and Innovative Research, Ghaziabad 201002, India; Microbiology and Fermentation Technology Department, CSIR-Central Food Technological Research Institute, Mysore 570020, India.
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15
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Brader T, Bhatt P, Turvey T. Improved Quality of Living following Simultaneous Condylectomy and Orthognathic Surgery: A Retrospective Analysis for Active Unilateral Condylar Hyperplasia. J Oral Maxillofac Surg 2021. [DOI: 10.1016/j.joms.2021.08.066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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16
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Poku FA, Bhatt P, Umscheid J, Ayensu M, Parmar N, Vasudeva R, Doshi H, Donda K, Dapaah-Siakwan F. Gastroschisis and omphalocele: Trends in incidence, mortality, and resource use. Ann Epidemiol 2021. [DOI: 10.1016/j.annepidem.2021.05.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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17
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Mukherjee M, Sistla S, Veerabhadraiah SR, Bettadaiah BK, Thakur MS, Bhatt P. DNA aptamer selection and detection of marine biotoxin 20 Methyl Spirolide G. Food Chem 2021; 363:130332. [PMID: 34144421 DOI: 10.1016/j.foodchem.2021.130332] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 05/13/2021] [Accepted: 06/07/2021] [Indexed: 01/19/2023]
Abstract
This study reports the selection of DNA aptamer for the detection of 20 Methyl Spirolide G (SPXG). After 10 rounds of selection, theenriched pool of aptamers specific to SPXGwas cloned, sequenced and clustered into seven families based onsimilarity. Three sequences SPX1, SPX2 and SPX7, each belonging to different clades were further evaluated for their binding affinity. Surface plasmonresonancestudies determined the highest affinity KDof 0.0345x10-8 M for aptamer SPX7. A label-free microscale thermophoresis-based aptasensing using SPX7 with highest affinity, indicated a linear detection range from 1.9 to 125000 pg/mL (LOD = 0.39 pg/mL; LOQ = 1.17 pg/mL). Spiking studies in simulated contaminated samples of mussel and scallop indicated recoveries in the range of 86 to 108%. Results of this study indicate the successful development of an aptamer for detection of SPXG at picogram levels. It also opens up avenues to develop other sensing platforms for detection of SPXG using the reported aptamer.
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Affiliation(s)
- Monali Mukherjee
- Microbiology & Fermentation Technology Department, CSIR-Central Food Technological Research Institute (CFTRI), Mysuru 570020, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, UP-201002, India
| | - Srinivas Sistla
- Institute for Structural Biology, Drug Discovery and Development, School of Pharmacy - Dept of Medicinal Chemistry, Virginia Commonwealth University, Richmond, VA 23298, United States
| | - Shivakumar R Veerabhadraiah
- Microbiology & Fermentation Technology Department, CSIR-Central Food Technological Research Institute (CFTRI), Mysuru 570020, India
| | - B K Bettadaiah
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, UP-201002, India; Spices and Flavour Sciences Department, CSIR-Central Food Technological Research Institute (CFTRI), Mysuru 570020, India
| | - M S Thakur
- Microbiology & Fermentation Technology Department, CSIR-Central Food Technological Research Institute (CFTRI), Mysuru 570020, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, UP-201002, India
| | - Praveena Bhatt
- Microbiology & Fermentation Technology Department, CSIR-Central Food Technological Research Institute (CFTRI), Mysuru 570020, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, UP-201002, India.
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18
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Shubha JR, Tripathi P, Somashekar BS, Kurrey N, Bhatt P. Woodfordia fruticosa extract supplementation stimulates the growth of Lacticaseibacillus casei and Lacticaseibacillus rhamnosus with adapted intracellular and extracellular metabolite pool. J Appl Microbiol 2021; 131:2994-3007. [PMID: 33973306 DOI: 10.1111/jam.15132] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 04/15/2021] [Accepted: 04/30/2021] [Indexed: 01/24/2023]
Abstract
AIM To investigate the effect of Woodfordia fruticosa extract (WfE) on two probiotic bacteria: Lacticaseibacillus casei and Lacticaseibacillus rhamnosus. METHODS AND RESULTS WfE supplementation at 0·5 and 1 mg ml-1 stimulated probiotic growth (P < 0·05), enhanced adhesion to CaCO2 cells (P < 0·05) while inhibiting foodborne pathogens Escherichia coli and Staphylococcus aureus (P < 0·05). 1 H-NMR based metabolomic studies indicated higher glucose : lactate and glucose : acetate in the extracellular matrix with significant variation (P < 0·05) in intracellular concentrations of lactate, acetate, glutamate, dimethylamine, phenylalanine, branched-chain amino acids and total cellular lipid composition. Fatty acid methyl ester analysis showed a chemical shift from saturated to unsaturated lipids with WfE supplementation. PCA plots indicated clear discrimination between test groups, highlighting variation in metabolite pool in response to WfE supplementation. CONCLUSION Phytonutrient-rich WfE exhibited prebiotic-like attributes, and probiotic bacteria showed altered metabolite pools as an adaptive mechanism. SIGNIFICANCE AND IMPACT OF THE STUDY This is the first report providing insights into the prebiotic-like activity of WfE on gut representative probiotics. The extended metabolomic studies shed light on the positive interaction between phytonutrients and beneficial bacteria that possibly help them to adapt to a phytonutrient-rich WfE environment. WfE with potential prebiotic attributes can be used in the development of novel synbiotic functional products targeting gut microbial modulation to improve health.
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Affiliation(s)
- J R Shubha
- Microbiology and Fermentation Technology Department, CSIR-CFTRI, Mysuru, India.,Academy of Scientific and Innovative Research, Ghaziabad, India
| | - P Tripathi
- Spices and Flavor Science Department, CSIR-CFTRI, Mysuru, India
| | | | - N Kurrey
- Department of Biochemistry, CSIR-CFTRI, Mysuru, India
| | - P Bhatt
- Microbiology and Fermentation Technology Department, CSIR-CFTRI, Mysuru, India.,Academy of Scientific and Innovative Research, Ghaziabad, India
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19
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Schneider J, Davies S, Howarth A, GARCIA SANCHEZ J, Rao N, Grandy S, Bhatt P, Parackal A, Wong D, Briggs A. POS-321 TRANSLATING THE FINDINGS OF THE ROXADUSTAT NDD GLOBAL PHASE 3 PROGRAM INTO COST OFFSETS FROM A CANADIAN HEALTHCARE PERSPECTIVE. Kidney Int Rep 2021. [DOI: 10.1016/j.ekir.2021.03.337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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20
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GARCIA SANCHEZ J, Fifer S, West B, Wittbrodt E, Bhatt P, Grandy S, Rao N, Wong D, Karamy R, Parackal A, Khan F, Tennankore K, Johnson D. POS-318 PATIENT PREFERENCES FOR RISKS AND BENEFITS OF MEDICATIONS TO MANAGE ANEMIA OF CHRONIC KIDNEY DISEASE: A DISCRETE CHOICE EXPERIMENT. Kidney Int Rep 2021. [DOI: 10.1016/j.ekir.2021.03.334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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21
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Rao N, Webb N, Bhatt P, Grandy S, Garcia Sanchez J. POS-288 THE BURDEN OF HEART FAILURE IN PATIENTS WITH NON–DIALYSIS-DEPENDENT ANAEMIA OF CHRONIC KIDNEY DISEASE RECEIVING ERYTHROPOIESIS-STIMULATING AGENTS: A SYSTEMATIC LITERATURE REVIEW. Kidney Int Rep 2021. [DOI: 10.1016/j.ekir.2021.03.303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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22
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GARCIA SANCHEZ J, Retat L, Webber L, Cabrera C, Grandy S, Rao N, Bhatt P, Parackal A, Wong D, Wish J, Tangri N. POS-320 INSIDE ANEMIA OF CKD: QUANTIFYING THE EPIDEMIOLOGICAL BURDEN OF ANEMIA OF CKD IN CANADA VIA MICROSIMULATION MODELLING. Kidney Int Rep 2021. [DOI: 10.1016/j.ekir.2021.03.336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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23
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Rao N, Webb N, Bhatt P, Grandy S, Garcia Sanchez J. POS-287 TREATMENT BURDEN AND HEALTH-RELATED QUALITY OF LIFE IN PATIENTS WITH NON–DIALYSIS-DEPENDENT ANAEMIA OF CHRONIC KIDNEY DISEASE RECEIVING ERYTHROPOIESIS-STIMULATING AGENTS: A SYSTEMATIC LITERATURE REVIEW. Kidney Int Rep 2021. [DOI: 10.1016/j.ekir.2021.03.302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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24
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Mukherjee M, Nandhini C, Bhatt P. Colorimetric and chemiluminescence based enzyme linked apta-sorbent assay (ELASA) for ochratoxin A detection. Spectrochim Acta A Mol Biomol Spectrosc 2021; 244:118875. [PMID: 32911460 DOI: 10.1016/j.saa.2020.118875] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 08/13/2020] [Accepted: 08/20/2020] [Indexed: 05/14/2023]
Abstract
Ochratoxin A (OTA) is one of the most widespread mycotoxin found to contaminate various food products such as cereals, spices, groundnuts, coffee, wine, beer etc. It is also carried over from contaminated feed and fodder to milk, blood, meat, kidney and liver of animals consuming it. Enzyme-linked to biorecognition molecules like antibodies or aptamers are very popular due to their ability to be used as labels or tags in biosensing formats. In this work, OTA aptamer based colorimetric and chemiluminescence biosensing formats were evaluated for the detection of OTA. The colorimetric enzyme linked apta-sorbent assay (Co-ELASA) and chemiluminescence enzyme linked apta-sorbent assay (Cl-ELASA) showed a linear detection range from 1 pg/mL to 1 μg/mL with a limit of detection (LOD) of 0.84 pg/mL for Co-ELASA (limit of quantification (LOQ) = 2.54 pg/mL) and 1.29 pg/mL for Cl-ELASA (LOQ = 3.94 pg/mL) under optimized buffer conditions. Comparison of ELASA methods with sandwich ELISA indicated that the developed techniques had sensitivity similar to the conventional technique which indicated a LOD of 1.13 pg/mL and LOQ of 3.41 pg/mL. Studies in simulated contaminated food samples by spiking OTA in groundnut and coffee bean at concentrations of 0.1, 1 and 10 ppb, indicated recoveries in the range of 50.21 to 113.27% for Co-ELASA, 90.47 to 107.72% for Cl-ELASA and 76.23 to 141.49% for ELISA. Results of the study indicate that Co-ELASA and Cl-ELASA assays could be an alternate approach for ultrasensitive detection of OTA in food samples, which can also be adapted for biosensor development.
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Affiliation(s)
- Monali Mukherjee
- Microbiology & Fermentation Technology Department, CSIR-Central Food Technological Research Institute (CFTRI), Mysuru 570020, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, UP 201002, India
| | - C Nandhini
- Microbiology & Fermentation Technology Department, CSIR-Central Food Technological Research Institute (CFTRI), Mysuru 570020, India
| | - Praveena Bhatt
- Microbiology & Fermentation Technology Department, CSIR-Central Food Technological Research Institute (CFTRI), Mysuru 570020, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, UP 201002, India.
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25
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Venkatasubramanian V, Srinu D, Tigari B, Bhatt P, Kumar M, Pannu AK, Suri V. Roth's spots. QJM 2020; 113:294. [PMID: 31400205 DOI: 10.1093/qjmed/hcz212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- V Venkatasubramanian
- Department of Internal Medicine, Post Graduate Institute of Medical Education and Research, 4th Floor, F block, Chandigarh 160012, India
| | - D Srinu
- Department of Internal Medicine, Post Graduate Institute of Medical Education and Research, 4th Floor, F block, Chandigarh 160012, India
| | - B Tigari
- Department of Ophthalmology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - P Bhatt
- Department of Internal Medicine, Post Graduate Institute of Medical Education and Research, 4th Floor, F block, Chandigarh 160012, India
| | - M Kumar
- Department of Internal Medicine, Post Graduate Institute of Medical Education and Research, 4th Floor, F block, Chandigarh 160012, India
| | - A K Pannu
- Department of Internal Medicine, Post Graduate Institute of Medical Education and Research, 4th Floor, F block, Chandigarh 160012, India
| | - V Suri
- Department of Internal Medicine, Post Graduate Institute of Medical Education and Research, 4th Floor, F block, Chandigarh 160012, India
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26
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Akshath US, Bhatt P, Singh SA. Differential Interaction of Metal Ions with Gold Nanoclusters and Application in Detection of Cobalt and Cadmium. J Fluoresc 2020; 30:537-545. [PMID: 32185584 DOI: 10.1007/s10895-020-02509-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 02/14/2020] [Indexed: 01/01/2023]
Abstract
Interest in biosensing platforms using protein fluorescent gold nanoclusters (FGNCs) has grown significantly in the past due to the unique optical properties they offer. This study investigates the interaction of metal ions with FGNCs, and the structural modifications brought about by the interaction resulting in fluorescence changes of the cluster and its successful application in the detection of two heavy metals, cobalt and cadmium. The binding of cobalt and cadmium to FGNCs synthesized from BSA significantly altered the secondary structure of the protein, causing a change in its hydrophobicity. It also resulted in a change in fluorescence properties of FGNCs by intersystem crossing (ICT) and fluorescence resonance energy transfer (FRET). Cobalt and cadmium could successfully be detected in the range of 5-165 ng/mL (R2 = 0.95) and 20-1000 ng/ mL (R2 = 0.91), respectively, with appreciable sensitivity. The principle was also applied for the detection of Vitamin B12 in commercially available ampoules, validating the proposed method. Graphical Abstract Proposed detection method of cadmium and cobalt using FGNCs.
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Affiliation(s)
- Uchangi Satyaprasad Akshath
- Academy of Scientific and Innovative Research (AcSIR), New Delhi, India
- Microbiology & Fermentation Technology Department, Central Food Technological Research Institute, Mysore, 570020, India
| | - Praveena Bhatt
- Academy of Scientific and Innovative Research (AcSIR), New Delhi, India.
- Microbiology & Fermentation Technology Department, Central Food Technological Research Institute, Mysore, 570020, India.
| | - Sridevi Annapurna Singh
- Academy of Scientific and Innovative Research (AcSIR), New Delhi, India
- Department of Protein Chemistry & Technology, CSIR- Central Food Technological Research Institute (CFTRI), Mysuru, 570020, India
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27
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Taylor J, McNerney W, Bhatt P, Hambro B, Strossman N, Gilmore M. Precision stimulation of parietal lobe targets in neurodegenerative and neuropsychiatric disorders. Brain Stimul 2019. [DOI: 10.1016/j.brs.2018.12.802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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28
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Vinitha MV, Najeeb PK, Kala A, Bhatt P, Safvan CP, Vig S, Kadhane U. Plasmon excitation and subsequent isomerization dynamics in naphthalene and azulene under fast proton interaction. J Chem Phys 2018; 149:194303. [DOI: 10.1063/1.5046464] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- M. V. Vinitha
- Department of Physics, Indian Institute of Space Science and Technology, Thiruvananthapuram 695547, India
| | - P. K. Najeeb
- Department of Physics, Indian Institute of Space Science and Technology, Thiruvananthapuram 695547, India
| | - A. Kala
- Department of Physics, Indian Institute of Space Science and Technology, Thiruvananthapuram 695547, India
| | - P. Bhatt
- Inter-University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, India
| | - C. P. Safvan
- Inter-University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, India
| | - S. Vig
- Department of Earth and Space Science, Indian Institute of Space Science and Technology, Trivandrum 695547, India
| | - U. Kadhane
- Department of Physics, Indian Institute of Space Science and Technology, Thiruvananthapuram 695547, India
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29
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Mukherjee M, Manonmani HK, Bhatt P. Aptamer as capture agent in enzyme-linked apta-sorbent assay (ELASA) for ultrasensitive detection of Aflatoxin B 1. Toxicon 2018; 156:28-33. [PMID: 30399357 DOI: 10.1016/j.toxicon.2018.11.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Revised: 10/12/2018] [Accepted: 11/01/2018] [Indexed: 01/01/2023]
Abstract
Aflatoxin B1 (AFB1), is one of the most toxic mycotoxins found to contaminate various food commodities like cereals, dried fruits, tree nuts, spices and crude vegetable oils. In spite of considerable progress in analytical techniques, there is still a need to develop rapid and highly sensitive detection platforms for AFB1. In this study, AFB1 specific aptamer was used as a capture molecule to develop an enzyme-linked apta-sorbent assay (ELASA) for ultrasensitive detection of AFB1. Under optimized conditions, the assay had a linear detection range from 1 μg to 1 pg with a limit of detection (LOD) of 1 pg/mL in buffer. Conventional ELISA with AFB1 hapten as the capture agent (LOD = 10 pg/mL) was also carried out to compare the results with the present method. Recovery studies in food samples like dried red chillies, groundnut and pepper using both the methods was found to be in the range of 88.49-106.4% at 10 ng/mL and 87.4% to 95.8% at 5 ng/mL for ELASA and 76.56-127.68% at 10 ng/mL and 82-101.2% at 5 ng/mL for ELISA. Higher detection (10 fold) and better recovery using ELASA suggest that the method could offer an early, ultrasensitive, high-throughput, qualitative and semi-quantitative detection of AFB1 in contaminated food samples.
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Affiliation(s)
- Monali Mukherjee
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Central Food Technological Research Institute (CFTRI), Mysuru, 570020 India; Microbiology & Fermentation Technology Department, CSIR-Central Food Technological Research Institute (CFTRI), Mysuru, 570020 India
| | - H K Manonmani
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Central Food Technological Research Institute (CFTRI), Mysuru, 570020 India; Food Protectants and Infestation Control Department, CSIR-Central Food Technological Research Institute (CFTRI), Mysuru, 570020 India
| | - Praveena Bhatt
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Central Food Technological Research Institute (CFTRI), Mysuru, 570020 India; Microbiology & Fermentation Technology Department, CSIR-Central Food Technological Research Institute (CFTRI), Mysuru, 570020 India.
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30
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Bhatt P, Bonomi P, Basu S, Batus M. P3.01-05 Mature Progression-Free Survival in Stage IV Non-Small Cell Lung Cancer Patients Treated With Pemetrexed Maintenance Therapy. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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31
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Harohally NV, Cherita C, Bhatt P, Anu Appaiah KA. Antiaflatoxigenic and Antimicrobial Activities of Schiff Bases of 2-Hydroxy-4-methoxybenzaldehyde, Cinnamaldehyde, and Similar Aldehydes. J Agric Food Chem 2017; 65:8773-8778. [PMID: 28942637 DOI: 10.1021/acs.jafc.7b02576] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
2-Hydroxy-4-methoxybenzaldehyde (HMBA) is a nontoxic phenolic flavor from dietary source Decalipus hamiltonii and Hemidesmus indicus. HMBA is an excellent antimicrobial agent with additional antiaflatoxigenic potency. On the other hand, cinnamaldehyde from cinnamon is a widely employed flavor with significant antiaflatoxigenic activity. We have attempted the enhancement of antiaflatoxigenic and antimicrobial properties of HMBA, cinnamaldehyde, and similar molecules via Schiff base formation accomplished from condensation reaction with amino sugar (d-glucamine). HMBA derived Schiff bases exhibited commendable antiaflatoxigenic activity at the concentration 0.1 mg/mL resulting in 9.6 ± 1.9% growth of Aspergillus flavus and subsequent 91.4 ± 3.9% reduction of aflatoxin B1 with respect to control.
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Affiliation(s)
- Nanishankar V Harohally
- Department of Spice and Flavour Science, CSIR-CFTRI , KRS Road, Mysuru 570020 Karnataka, India
| | - Chris Cherita
- Microbiology and Fermentation Technology, CSIR-CFTRI , KRS Road, Mysuru 570020 Karnataka, India
| | - Praveena Bhatt
- Microbiology and Fermentation Technology, CSIR-CFTRI , KRS Road, Mysuru 570020 Karnataka, India
| | - K A Anu Appaiah
- Microbiology and Fermentation Technology, CSIR-CFTRI , KRS Road, Mysuru 570020 Karnataka, India
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32
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Nanjundaiah S, Mutturi S, Bhatt P. Modeling of caffeine degradation kinetics during cultivation of Fusarium solani using sucrose as co-substrate. Biochem Eng J 2017. [DOI: 10.1016/j.bej.2017.05.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Abstract
Aflatoxin B1 (AFB1 ) is one of the most commonly found mycotoxins in food commodities, particularly cereals, oilseeds, spices and tree nuts. In the past decade, aptamers have come into limelight and emerged as a new biosensing element replacing antibodies in various detection formats. Herein we report a faster, more sensitive, high throughput method for the detection of AFB1 using AFB1 -specific aptamers. The assay format was based on a competitive reaction of the fluorescent tagged aptamer specific to AFB1 with the aflatoxin conjugate. Under optimal conditions, a linear range of detection (50 ng to 50 pg) was achieved with a limit of detection (LOD) of 10 pg/mL in the buffer system. Results of inter- and intra-assay revealed that the assay was repeatable with standard deviation in acceptable range. The assay was also validated in food samples such as dried red chilies, groundnut and whole pepper with recovery in the range of 92 to 102% at 10 ng/mL and 100 pg/mL levels. The aptasensor assay was also compared with standard analytical method of HPLC and was found to be more sensitive. This detection technique has the potential to be developed into a biosensor platform for AFB1 detection.
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Affiliation(s)
- Monali Mukherjee
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Central Food Technological Research Institute (CFTRI), Mysuru, 570020, India.,Microbiology and Fermentation Technology Department, CSIR-Central Food Technological Research Institute (CFTRI), Mysuru, 570020, India
| | - Praveena Bhatt
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Central Food Technological Research Institute (CFTRI), Mysuru, 570020, India.,Microbiology and Fermentation Technology Department, CSIR-Central Food Technological Research Institute (CFTRI), Mysuru, 570020, India
| | - Manonmani H K
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Central Food Technological Research Institute (CFTRI), Mysuru, 570020, India.,Food Protectants and Infestation Control Department, CSIR-Central Food Technological Research Institute (CFTRI), Mysuru, 570020, India
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Cole B, Bhatt P, Kwok I, Bailey V, An W, Bresilla C, Chin J, Krouse M. WS18.1 Combination FDL169/FDL176 is superior to tezacaftor/ivacaftor. J Cyst Fibros 2017. [DOI: 10.1016/s1569-1993(17)30255-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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35
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Balaji K, Bhatt P, Jha A. Expeditious Synthesis, Antimicrobial and Antimalarial Activities of Novel Heterocycles Bearing Imidazole-oxadiazole Based Hybrid Pharmacophores. Drug Res (Stuttg) 2016; 66:587-591. [PMID: 27463029 DOI: 10.1055/s-0042-112028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
A facile synthesis of 2-substituted-5-amino-oxadiazole derivatives has been achieved by refluxing/sonicating a mixture of semicarbazide with various aromatic acids in conc. sulphuric acid alone. The isolated products were further condensed with p-dimethylaminobenzaldehyde/p-hydroxybenzaldehyde to obtain respective imino derivatives. Finally, some potentially biologically active imidazole analogues were obtained by reacting ammonium acetate and 5-bromoisatin with the synthesized imino products. All the newly synthesized compounds were thoroughly characterized by standard analytical techniques. These imidazole-oxadiazole hybrid compounds were also evaluated for their antimicrobial and antimalarial activities. The compounds all exhibited moderate to significant antimicrobial activity (6-10 mm, zone of inhibition) and promising antimalarial activity (IC50 0.037-0.100 µM). This report entails a detailed synthetic procedure, spectroscopic elucidation and activities of the synthesized compounds.
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Affiliation(s)
- K Balaji
- Department of Chemistry, GIS, GITAM University, Visakhapatnam, India
| | - P Bhatt
- Department of Chemistry, GIS, GITAM University, Visakhapatnam, India
| | - A Jha
- Department of Chemistry, GIS, GITAM University, Visakhapatnam, India
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Akshath US, Bhatt P. Tunneling of redox enzymes to design nano-probes for monitoring NAD(+) dependent bio-catalytic activity. Biosens Bioelectron 2016; 85:240-246. [PMID: 27179565 DOI: 10.1016/j.bios.2016.05.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Revised: 05/01/2016] [Accepted: 05/02/2016] [Indexed: 10/21/2022]
Abstract
Monitoring of bio-catalytic events by using nano-probes is of immense interest due to unique optical properties of metal nanoparticles. In the present study, tunneling of enzyme activity was achieved using redox cofactors namely oxidized cytochrome-c (Cyt-c) and Co-enzyme-Q (Co-Q) immobilized on Quantum dots (QDs) which acted as a bio-probe for NAD(+) dependent dehydrogenase catalyzed reaction. We studied how electron transfer from substrate to non-native electron acceptors can differentially modify photoluminescence properties of CdTe QDs. Two probes were designed, QD-Ox-Cyt-c and QD-Ox-Co-Q, which were found to quench the fluorescence of QDs. However, formaldehyde dehydrogenase (FDH) catalyzed reduction of Cyt-c and Co-Q on the surface of QDs lead to fluorescence turn-on of CdTe QDs. This phenomenon was successfully used for the detection of HCHO in the range of 0.01-100,000ng/mL (LOD of 0.01ng/mL) using both QD-Ox-Cyt-c (R(2)=0.93) and QD-Ox-Co-Q (R(2)=0.96). Further probe performance and stability in samples like milk, wine and fruit juice matrix were studied and we could detect HCHO in range of 0.001-100,000ng/mL (LOD of 0.001ng/mL) with good stability and sensitivity of probe in real samples (R(2)=0.97). Appreciable recovery and detection sensitivity in the presence of metal ions suggests that the developed nano-probes can be used successfully for monitoring dehydrogenase based bio-catalytic events even in the absence of NAD(+). Proposed method is advantageous over classical methods as clean up/ derivatization of samples is not required for formaldehyde detection.
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Affiliation(s)
- Uchangi Satyaprasad Akshath
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Central Food Technological Research Institute (CFTRI), Mysuru 570020, India; Microbiology & Fermentation Technology Department, CSIR-Central Food Technological Research Institute (CFTRI), Mysuru 570020, India
| | - Praveena Bhatt
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Central Food Technological Research Institute (CFTRI), Mysuru 570020, India; Microbiology & Fermentation Technology Department, CSIR-Central Food Technological Research Institute (CFTRI), Mysuru 570020, India.
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Nanjundaiah S, Krishna H, Bhatt P. Fluorescence Based Turn-on Probe for the Determination of Caffeine Using Europium-Tetracycline as Energy Transfer Complex. J Fluoresc 2016; 26:1115-21. [DOI: 10.1007/s10895-016-1803-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Accepted: 03/27/2016] [Indexed: 01/08/2023]
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Akshath US, Bhatt P. Gold nanoparticle synthesis coupled to fluorescence turn-on for sensitive detection of formaldehyde using formaldehyde dehydrogenase. RSC Adv 2016. [DOI: 10.1039/c6ra12222a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Ultrasensitive detection of formaldehyde by coupling enzyme activity with GNP synthesis.
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Affiliation(s)
- Uchangi Satyaprasad Akshath
- Academy of Scientific and Innovative Research (AcSIR)
- CSIR-Central Food Technological Research Institute (CFTRI)
- Mysore-570020
- India
- Microbiology & Fermentation Technology Department
| | - Praveena Bhatt
- Academy of Scientific and Innovative Research (AcSIR)
- CSIR-Central Food Technological Research Institute (CFTRI)
- Mysore-570020
- India
- Microbiology & Fermentation Technology Department
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Nanjundaiah S, Bhatt P, Rastogi NK, Thakur MS. Response Surface Optimization for Decaffeination and Theophylline Production by Fusarium solani. Appl Biochem Biotechnol 2015; 178:58-75. [DOI: 10.1007/s12010-015-1858-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2015] [Accepted: 09/14/2015] [Indexed: 10/23/2022]
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De S, Tezuka H, Bhatt P, Vesapidze G, Safvan CP, Matsumoto J, Shiromaru H. Do linear molecules always dissociate along their axis? Intra-molecular scattering within Diiodoacetylene. ACTA ACUST UNITED AC 2015. [DOI: 10.1088/1742-6596/635/3/032061] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Shubha JR, Bhatt P. Plectranthus amboinicus leaves stimulate growth of probiotic L. plantarum: evidence for ethnobotanical use in diarrhea. J Ethnopharmacol 2015; 166:220-227. [PMID: 25796406 DOI: 10.1016/j.jep.2015.02.055] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Revised: 01/14/2015] [Accepted: 02/27/2015] [Indexed: 06/04/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Leaves of Plectranthus amboinicus are consumed in India along with buttermilk (a probiotic source) during pathogen induced diarrhea. This treatment is known to reduce the number of episodes as well as duration of diarrhea. AIM OF THE STUDY In the background of its ethnobotanical use, the present investigation was carried out to determine whether, apart from having an antimicrobial activity on pathogens, the leaves could possibly also have a positive effect on the beneficial microflora of the gut resulting in accelerated microbial ecological balance. MATERIALS AND METHODS The growth stimulating activity of the hot water extract (HWE) of P. amboinicus leaves on probiotic Lactobacillus plantarum was determined by microbroth dilution technique and viable plate count method in selective medium (MRS) as well as in fermented milk. The ability of the bacteria to utilize the phytoconstituents of HWE primarily phenolic acids and sugars was determined by assaying for phenolic acid decarboxylase by SDS-PAGE and β-galactosidase activity by β-gal ONPG assay. RESULTS HWE of P. amboinicus leaves inhibited growth of pathogens (Escherichia coli and Salmonella typhimurium) while stimulated the growth of L. plantarum. SDS-PAGE gel showed the presence of phenolic acid decarboxylase enzyme induced in the presence of HWE in L. plantarum indicating the utilization of polyphenols by the bacteria. Cells grown on HWE also showed β-galactosidase activity indicating their ability to utilize sugars present in HWE. CONCLUSION Indian borage leaves have a prebiotic effect on the probiotic bacteria (L. plantarum) which utilizes the phytoconstituents of the leaves by producing necessary metabolic enzymes. This work provides evidence in the traditional use of the leaves in the alleviation of diarrhea by accelerating microbial gut balance during infection.
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Affiliation(s)
- J R Shubha
- Fermentation Technology and Bioengineering Department, CSIR-Central Food Technological Research Institute, Mysore 570020, India
| | - Praveena Bhatt
- Fermentation Technology and Bioengineering Department, CSIR-Central Food Technological Research Institute, Mysore 570020, India.
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Nambiar SS, Shetty NP, Bhatt P, Neelwarne B. Inhibition of LDL oxidation and oxidized LDL-induced foam cell formation in RAW 264.7 cells show anti-atherogenic properties of a foliar methanol extract of Scoparia dulcis. Pharmacogn Mag 2014; 10:S240-8. [PMID: 24991098 PMCID: PMC4078325 DOI: 10.4103/0973-1296.133241] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2013] [Revised: 08/02/2013] [Accepted: 05/28/2014] [Indexed: 11/13/2022] Open
Abstract
Background: Oxidation of low density lipoproteins and their further uptake by macrophages is known to result in the formation of foam cells, which are critical in the initiation of atherosclerosis through activation of inflammatory signalling cascades. Thus, powerful dietary antioxidants are receiving attention for the reversal of such pathological states. Materials and Methods: Extracts of Scoparia dulcis have been used as tea and health drinks with various health promoting effects. In the present study, we examined the reactive oxygen scavenging potential as well as anti-inflammatory and anti-atherogenic efficacies, using leaf extracts obtained after successive extraction with various solvents. Results: A methanol extract showed potent antioxidant activity with an IC50 value of 570 μg/ml, caused hydrogen peroxide scavenging (28.9 µg/ml) and anti-inflammatory effects by improving human erythrocyte membrane stabilisation (about 86%). The methanol extract also efficiently inhibited lipid peroxidation and oxidation of low density lipoproteins, thus preventing foam cell formation in cultured RAW 264.7 cells. Furthermore, phytochemical screening of the extracts showed high accumulation of flavonoids. Conclusions: The foliar methanol extract of Scoparia dulcis has a strong anti-atherogenic potential and this property could be attributed maybe due to presence of flavonoids since HPLC analysis showed high concentrations of myricetin and rutin in the methanol extract.
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Affiliation(s)
- Sinjitha S Nambiar
- Department of Plant Cell Biotechnology, Central Food Technological Research Institute (Council of Scientific and Industrial Research), Mysore, Karnataka, India
| | - Nandini Prasad Shetty
- Department of Plant Cell Biotechnology, Central Food Technological Research Institute (Council of Scientific and Industrial Research), Mysore, Karnataka, India
| | - Praveena Bhatt
- Fermentation Technology and Bioengineering, Central Food Technological Research Institute (Council of Scientific and Industrial Research), Mysore, Karnataka, India
| | - Bhagyalakshmi Neelwarne
- Department of Plant Cell Biotechnology, Central Food Technological Research Institute (Council of Scientific and Industrial Research), Mysore, Karnataka, India
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Chaudhari CN, Tandel K, Grover N, Bhatt P, Sahni AK, Sen S, Prahraj AK. In vitro vancomycin susceptibility amongst methicillin resistant Staphylococcus aureus. Med J Armed Forces India 2014; 70:215-9. [PMID: 25378772 DOI: 10.1016/j.mjafi.2013.11.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Accepted: 11/23/2013] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Vancomycin is drug of choice for treatment of Methicillin Resistant Staphylococcus aureus (MRSA) infections. S. aureus with reduced vancomycin susceptibility (SA-RVS) is on rise. Current guidelines of detection of SA-RVS are based on MIC (Minimum Inhibitory Concentration) by broth or agar dilution methods. Vancomycin MIC by E test (Epsilometer Test) is an alternative. A study was undertaken to know the prevalence of SA-RVS and compare vancomycin MIC by agar dilution and E test. METHODS A prospective study was undertaken at tertiary care hospital; 232 clinical MRSA isolates were included. Vancomycin MIC was undertaken by agar dilution method and E test. RESULTS All isolates were sensitive to Linezolid. Two MRSA isolates had vancomycin MIC ≥4 μg/ml; vancomycin MIC50 and MIC90 of MRSA isolates was 0.5 and 0.2 μg/ml respectively by agar dilution method. There was agreement over 93.5% isolates in vancomycin susceptibility by agar dilution and E test. E test had sensitivity and positive predictive value of 1.0 (CI - 0.34-1.0) and 0.5 (CI - 0.17-0.83) respectively compare to agar dilution method. CONCLUSIONS MRSA isolates continues to be susceptible to vancomycin and Linezolid. E test was found equally suitable in initial screening for vancomycin susceptibility. Due to geographic variation in prevalence, there is need of ongoing surveillance of SA-RVC.
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Affiliation(s)
- C N Chaudhari
- Associate Professor, Department of Microbiology, Armed Forces Medical College, Pune 411040, India
| | - K Tandel
- Medical Officer (Microbiology), Military Hospital Gwalior, India
| | - N Grover
- Associate Professor, Department of Microbiology, Armed Forces Medical College, Pune 411040, India
| | - P Bhatt
- Resident, Department of Microbiology, Armed Forces Medical College, Pune 411040, India
| | - A K Sahni
- Professor & Head, Department of Microbiology, Armed Forces Medical College, Pune 411040, India
| | - S Sen
- Senior Advisor (Pathology, Microbiology & Virology), Army Hospital (R&R), Delhi Cantt 10, India
| | - A K Prahraj
- Professor & Head (Microbiology), AIIMS, Bhubaneswar, Orissa, India
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Wani MY, Dhama K, Barathidasan R, Gowthaman V, Tiwari R, Bhatt P, Mahajan NK, Chawak MM, Singh SD, Kataria JM. Molecular detection and epidemiology of chicken infectious anaemia virus in India. ACTA ACUST UNITED AC 2013. [DOI: 10.38150/sajeb.3(4).p145-151] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Chicken infectious anemia (CIA) is an economically important disease affecting poultry, especially young chicks, characterized by poor weight gain, anemia, immunosuppression and production losses. Recent reports indicate that the virus is emerging and re-emerging worldwide. Also, scarce reports regarding the molecular detection and epidemiology of virus from India are available. The aim of this study was to determine the prevalence of the virus in the commercial poultry farms of the country employing polymerase chain reaction (PCR). Out of the suspected 424 field samples tested from 12 different states of the country during the last five years (2007-2012), 311 (73.3%) samples were found positive for CIAV-DNA indicating the wide prevalence of the virus in India. The age wise prevalence of the virus indicated high prevalence in young chicks of up to three weeks (80.3%) of age compared to 3-7 (66.6%) and 7-12 (25%) week age groups. Being an immunosuppressive emerging pathogen circulating among the poultry flocks of the country, suitable prevention and control measures need to be adopted timely. This is a first elaborative report on the molecular epidemiology of CIAV in poultry flocks of the country. Extensive epidemiological studies are suggested to know the magnitude of the virus affecting poultry industry of the country, and design and formulate effective disease prevention and control strategies to reduce economic losses being caused by emerging virus.
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Bhatt P, Rajesh P, Gopi P, Venkatesh K, Stephen N, Roy A, Pasupuleti M, Arockiaraj J. Gene profiling and characterization of chemokine 20 from snakehead murrel Channa striatus. Fish & Shellfish Immunology 2013; 34:1697. [DOI: 10.1016/j.fsi.2013.03.183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2023]
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Bhatt P, Kumaresan V, Palanisamy R, Pothikasalam G, Stephen N, Roy A, Arockiaraj J, Pasupuleti M. Bioinformatics characterization of chemokine 14 from snakehead murrel Channa striatus. Fish & Shellfish Immunology 2013; 34:1697. [DOI: 10.1016/j.fsi.2013.03.184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2023]
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Pothikasalam G, Kumaresan V, Palanisamy R, Bhatt P, Kuppusamy T, Pasupuleti M, Arockiaraj J. Macrobrachium rosenbergii glutathione-S-transferase-delta: Bioinformatics analysis. Fish & Shellfish Immunology 2013; 34:1730-1731. [DOI: 10.1016/j.fsi.2013.03.289] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2023]
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Palanisamy R, Pothikasalam G, Kumaresan V, Bhatt P, Roy A, Arockiaraj J, Pasupuleti M. In silico analysis of freshwater prawn transglutaminase. Fish & Shellfish Immunology 2013; 34:1727. [DOI: 10.1016/j.fsi.2013.03.279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2023]
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Mondal D, Sharma M, Maiti P, Prasad K, Meena R, Siddhanta AK, Bhatt P, Ijardar S, Mohandas VP, Ghosh A, Eswaran K, Shah BG, Ghosh PK. Fuel intermediates, agricultural nutrients and pure water from Kappaphycus alvarezii seaweed. RSC Adv 2013. [DOI: 10.1039/c3ra42919a] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Zacharaki EI, Morita N, Bhatt P, O'Rourke DM, Melhem ER, Davatzikos C. Survival analysis of patients with high-grade gliomas based on data mining of imaging variables. AJNR Am J Neuroradiol 2012; 33:1065-71. [PMID: 22322603 DOI: 10.3174/ajnr.a2939] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE The prediction of prognosis in HGGs is poor in the majority of patients. Our aim was to test whether multivariate prediction models constructed by machine-learning methods provide a more accurate predictor of prognosis in HGGs than histopathologic classification. The prediction of survival was based on DTI and rCBV measurements as an adjunct to conventional imaging. MATERIALS AND METHODS The relationship of survival to 55 variables, including clinical parameters (age, sex), categoric or continuous tumor descriptors (eg, tumor location, extent of resection, multifocality, edema), and imaging characteristics in ROIs, was analyzed in a multivariate fashion by using data-mining techniques. A variable selection method was applied to identify the overall most important variables. The analysis was performed on 74 HGGs (18 anaplastic gliomas WHO grades III/IV and 56 GBMs or gliosarcomas WHO grades IV/IV). RESULTS Five variables were identified as the most significant, including the extent of resection, mass effect, volume of enhancing tumor, maximum B0 intensity, and mean trace intensity in the nonenhancing/edematous region. These variables were used to construct a prediction model based on a J48 classification tree. The average classification accuracy, assessed by cross-validation, was 85.1%. Kaplan-Meier survival curves showed that the constructed prediction model classified malignant gliomas in a manner that better correlates with clinical outcome than standard histopathology. CONCLUSIONS Prediction models based on data-mining algorithms can provide a more accurate predictor of prognosis in malignant gliomas than histopathologic classification alone.
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Affiliation(s)
- E I Zacharaki
- Section of Biomedical Image Analysis, Department of Radiology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
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