1
|
Khaparkhuntikar K, Maji I, Gupta SK, Mahajan S, Aalhate M, Sriram A, Gupta U, Guru SK, Kulkarni P, Singh PK. Acalabrutinib as a novel hope for the treatment of breast and lung cancer: an in-silico proof of concept. J Biomol Struct Dyn 2024; 42:1469-1484. [PMID: 37272883 DOI: 10.1080/07391102.2023.2217923] [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] [Received: 11/08/2022] [Accepted: 04/01/2023] [Indexed: 06/06/2023]
Abstract
Drug repurposing is proved to be a groundbreaking concept in the field of cancer research, accelerating the pace of de novo drug discovery by investigating the anti-cancer activity of the already approved drugs. On the other hand, it got highly benefitted from the advancement in the in-silico tools and techniques, which are used to build up the initial "proof of concept" based on the drug-target interaction. Acalabrutinib (ACL) is a well-known drug for the treatment of hematological malignancies. But, the therapeutic ability of ACL against solid tumors is still unexplored. Thereby, the activity of ACL on breast cancer and lung cancer was evaluated utilizing different computational methods. A series of proteins such as VEGFR1, ALK, BCL2, CXCR-4, mTOR, AKT, PI3K, HER-2, and Estrogen receptors were selected based on their involvement in the progression of the breast as well as lung cancer. A multi-level computational study starting from protein-ligand docking to molecular dynamic (MD) simulations were performed to detect the binding potential of ACL towards the selected proteins. Results of the study led to the identification of ACL as a ligand that showed a high docking score and binding energy with HER-2, mTOR, and VEGFR-1 successively. Whereas, the MD simulations study has also shown good docked complex stability of ACL with HER2 and VEGFR1. Our findings suggest that interaction with those receptors can lead to preventive action on both breast and lung cancer, thus it can be concluded that ACL could be a potential molecule for the same purpose.Communicated by Ramaswamy H. Sarma.
Collapse
Affiliation(s)
- Kedar Khaparkhuntikar
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India
| | - Indrani Maji
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India
| | - Sunil Kumar Gupta
- Department of Bioinformatics, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India
| | - Srushti Mahajan
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India
| | - Mayur Aalhate
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India
| | - Anitha Sriram
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India
| | - Ujala Gupta
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India
| | - Santosh Kumar Guru
- Department of Biological Science, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India
| | - Prachi Kulkarni
- Department of Physiology, Shri B. M. Patil Medical College, Hospital & Research Centre BLDE (Deemed to be University), Vijayapura, Karnataka, India
| | - Pankaj Kumar Singh
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India
| |
Collapse
|
2
|
Rajkumar E, Gopi A, Joshi A, Thomas AE, Arunima NM, Ramya GS, Kulkarni P, Rahul P, George AJ, Romate J, Abraham J. Applications, benefits and challenges of telehealth in India during COVID-19 pandemic and beyond: a systematic review. BMC Health Serv Res 2023; 23:7. [PMID: 36597088 PMCID: PMC9810518 DOI: 10.1186/s12913-022-08970-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 12/14/2022] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND India, the seventh-largest country in the world and the second-most populated faces enormous challenges when it comes to healthcare. The country's healthcare system was close to collapse due to the detrimental effects of the COVID-19 pandemic. Telehealth, which enables treating patients remotely, played a critical role during these challenging times. This systematic review investigates in detail the role of telehealth during COVID-19 and its application beyond the pandemic. METHODS Database searches on PubMed, Scopus, Science Direct and Web of Science were carried out for studies published on telehealth, and articles were included if they focused on any audio or video telehealth consultation during the pandemic in India. Findings were synthesised into three main themes: applications, benefits and challenges of telehealth services. Methodological quality was assessed using JBI critical appraisal tools. RESULTS The initial search on databases yielded 1143 articles. Of those, 19 met the eligibility criteria. Findings highlight the effective utilisation of telehealth across multiple medical specialities. Although insufficient technological infrastructure and other barriers due to the virtual consultation challenge the successful implementation of telehealth in India, it has the potential to bridge the rural-urban healthcare divide with cost-effective and easily accessible services. CONCLUSION High patient/provider satisfaction underscores the need to integrate telehealth into routine healthcare practices in the country. However, the review urges the government and healthcare practitioners to address the telehealth challenges with prime importance to ensure quality healthcare throughout the nation even after the pandemic.
Collapse
Affiliation(s)
- Eslavath Rajkumar
- grid.448766.f0000 0004 1764 8284Department of Psychology, Central University of Karnataka, Kalaburagi, Karnataka India
| | - Aswathy Gopi
- grid.448766.f0000 0004 1764 8284Department of Psychology, Central University of Karnataka, Kalaburagi, Karnataka India
| | - Aditi Joshi
- grid.448766.f0000 0004 1764 8284Department of Psychology, Central University of Karnataka, Kalaburagi, Karnataka India
| | - Aleena Elizabeth Thomas
- grid.448766.f0000 0004 1764 8284Department of Psychology, Central University of Karnataka, Kalaburagi, Karnataka India
| | - N. M. Arunima
- grid.448766.f0000 0004 1764 8284Department of Psychology, Central University of Karnataka, Kalaburagi, Karnataka India
| | - Gosetty Sri Ramya
- grid.448766.f0000 0004 1764 8284Department of Psychology, Central University of Karnataka, Kalaburagi, Karnataka India
| | - Prachi Kulkarni
- grid.448766.f0000 0004 1764 8284Department of Psychology, Central University of Karnataka, Kalaburagi, Karnataka India
| | - P. Rahul
- grid.448766.f0000 0004 1764 8284Department of Psychology, Central University of Karnataka, Kalaburagi, Karnataka India
| | - Allen Joshua George
- grid.512371.30000 0004 1767 583XHumanities and Applied Sciences, Indian Institute of Management, Ranchi, Jharkhand India
| | - John Romate
- grid.448766.f0000 0004 1764 8284Department of Psychology, Central University of Karnataka, Kalaburagi, Karnataka India
| | - John Abraham
- grid.416432.60000 0004 1770 8558St. John’s Medical College, Bangalore, Karnataka India
| |
Collapse
|
3
|
Malayil L, Ramachandran P, Chattopadhyay S, Allard SM, Bui A, Butron J, Callahan MT, Craddock HA, Murray R, East C, Sharma M, Kniel K, Micallef S, Hashem F, Gerba CP, Ravishankar S, Parveen S, May E, Handy E, Kulkarni P, Anderson-Coughlin B, Craighead S, Gartley S, Vanore A, Duncan R, Foust D, Haymaker J, Betancourt W, Zhu L, Mongodin EF, Sapkota A, Pop M, Sapkota AR. Variations in Bacterial Communities and Antibiotic Resistance Genes Across Diverse Recycled and Surface Water Irrigation Sources in the Mid-Atlantic and Southwest United States: A CONSERVE Two-Year Field Study. Environ Sci Technol 2022; 56:15019-15033. [PMID: 36194536 PMCID: PMC9632240 DOI: 10.1021/acs.est.2c02281] [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] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 09/15/2022] [Accepted: 09/15/2022] [Indexed: 05/30/2023]
Abstract
Reduced availability of agricultural water has spurred increased interest in using recycled irrigation water for U.S. food crop production. However, there are significant knowledge gaps concerning the microbiological quality of these water sources. To address these gaps, we used 16S rRNA gene and metagenomic sequencing to characterize taxonomic and functional variations (e.g., antimicrobial resistance) in bacterial communities across diverse recycled and surface water irrigation sources. We collected 1 L water samples (n = 410) between 2016 and 2018 from the Mid-Atlantic (12 sites) and Southwest (10 sites) U.S. Samples were filtered, and DNA was extracted. The V3-V4 regions of the 16S rRNA gene were then PCR amplified and sequenced. Metagenomic sequencing was also performed to characterize antibiotic, metal, and biocide resistance genes. Bacterial alpha and beta diversities were significantly different (p < 0.001) across water types and seasons. Pathogenic bacteria, such as Salmonella enterica, Staphylococcus aureus, and Aeromonas hydrophilia were observed across sample types. The most common antibiotic resistance genes identified coded against macrolides/lincosamides/streptogramins, aminoglycosides, rifampin and elfamycins, and their read counts fluctuated across seasons. We also observed multi-metal and multi-biocide resistance across all water types. To our knowledge, this is the most comprehensive longitudinal study to date of U.S. recycled water and surface water used for irrigation. Our findings improve understanding of the potential differences in the risk of exposure to bacterial pathogens and antibiotic resistance genes originating from diverse irrigation water sources across seasons and U.S. regions.
Collapse
Affiliation(s)
- Leena Malayil
- Maryland
Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, Maryland 20740, United States
| | - Padmini Ramachandran
- Office
of Regulatory Science, Division of Microbiology, United States Food and Drug Administration, HFS-712, 5001 Campus Drive, College Park, Maryland 20740, United States
| | - Suhana Chattopadhyay
- Maryland
Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, Maryland 20740, United States
| | - Sarah M. Allard
- Maryland
Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, Maryland 20740, United States
| | - Anthony Bui
- Maryland
Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, Maryland 20740, United States
| | - Jicell Butron
- Maryland
Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, Maryland 20740, United States
| | - Mary Theresa Callahan
- Department
of Plant Science and Landscape Agriculture, University of Maryland, College
Park, Maryland 20740, United States
| | - Hillary A. Craddock
- Maryland
Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, Maryland 20740, United States
| | - Rianna Murray
- Maryland
Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, Maryland 20740, United States
| | - Cheryl East
- Northeast
Area, Beltsville Agriculture Research Center, Environmental Microbiology
and Food Safety Laboratory, Agriculture
Research Service, United States Department of Agriculture, Beltsville, Maryland 20705, United States
| | - Manan Sharma
- Northeast
Area, Beltsville Agriculture Research Center, Environmental Microbiology
and Food Safety Laboratory, Agriculture
Research Service, United States Department of Agriculture, Beltsville, Maryland 20705, United States
| | - Kalmia Kniel
- Department
of Animal and Food Sciences, University
of Delaware, Newark, Delaware 19716, United States
| | - Shirley Micallef
- Department
of Plant Science and Landscape Agriculture, University of Maryland, College
Park, Maryland 20740, United States
| | - Fawzy Hashem
- Department
of Agriculture and Resource Sciences, University
of Maryland Eastern Shore, Princess Anne, Maryland 21853, United States
| | - Charles P. Gerba
- Department
of Environmental Science, University of
Arizona, Tucson, Arizona 85719, United States
| | - Sadhana Ravishankar
- School
of Animal and Comparative Biomedical Sciences, University of Arizona, Tucson, Arizona 85721, United States
| | - Salina Parveen
- Department
of Agriculture and Resource Sciences, University
of Maryland Eastern Shore, Princess Anne, Maryland 21853, United States
| | - Eric May
- Department
of Agriculture and Resource Sciences, University
of Maryland Eastern Shore, Princess Anne, Maryland 21853, United States
| | - Eric Handy
- Northeast
Area, Beltsville Agriculture Research Center, Environmental Microbiology
and Food Safety Laboratory, Agriculture
Research Service, United States Department of Agriculture, Beltsville, Maryland 20705, United States
| | - Prachi Kulkarni
- Maryland
Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, Maryland 20740, United States
| | - Brienna Anderson-Coughlin
- Department
of Animal and Food Sciences, University
of Delaware, Newark, Delaware 19716, United States
| | - Shani Craighead
- Department
of Animal and Food Sciences, University
of Delaware, Newark, Delaware 19716, United States
| | - Samantha Gartley
- Department
of Animal and Food Sciences, University
of Delaware, Newark, Delaware 19716, United States
| | - Adam Vanore
- Department
of Animal and Food Sciences, University
of Delaware, Newark, Delaware 19716, United States
| | - Rico Duncan
- Department
of Agriculture and Resource Sciences, University
of Maryland Eastern Shore, Princess Anne, Maryland 21853, United States
| | - Derek Foust
- Department
of Agriculture and Resource Sciences, University
of Maryland Eastern Shore, Princess Anne, Maryland 21853, United States
| | - Joseph Haymaker
- Department
of Agriculture and Resource Sciences, University
of Maryland Eastern Shore, Princess Anne, Maryland 21853, United States
| | - Walter Betancourt
- Department
of Environmental Science, University of
Arizona, Tucson, Arizona 85719, United States
| | - Libin Zhu
- School
of Animal and Comparative Biomedical Sciences, University of Arizona, Tucson, Arizona 85721, United States
| | - Emmanuel F. Mongodin
- Institute
for Genome Sciences, University of Maryland
School of Medicine, Baltimore, Maryland 21201, United States
| | - Amir Sapkota
- Maryland
Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, Maryland 20740, United States
| | - Mihai Pop
- Department
of Computer Science and Center for Bioinformatics and Computational
Biology, University of Maryland, College Park, Maryland 20742, United States
| | - Amy R. Sapkota
- Maryland
Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, Maryland 20740, United States
| |
Collapse
|
4
|
Malay B, Kulkarni P. Impact of COVID-19 on the Indian ICT Industry. CM 2022. [DOI: 10.18137/cardiometry.2022.23.699709] [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: 11/08/2022] Open
Abstract
Due to the COVID-19 crisis, a continuation of business has become problematic. Most economic activities have shut down with huge losses. People at home, online businesses, video conferencing, movies on OTT platforms and e-learning, are the new normal. Seamless connectivity solutions are crucial. Living with COVID-19 has substantially reduced the movement of employees from homes to workplaces. Everyone needs telecommunication for business continuity, which has enhanced demand for telecom. While most industries faced a slump, Information and Telecommunication (ICT) industry has taken off. The IT and telecom ecosystems have reached a new symbiotic high to meet the massive demand. This paper discusses the impact of COVID-19 on the ICT industry and ‘Data Consumption’ concerning ‘Average Revenue per User (ARPU)’ and other indicators; it studies the impact of lockdown on Content Delivery Networks and their adaptation to higher usage; it predicts the impact of COVID-19 on the future of the ICT industry in India.
Collapse
|
5
|
Gupta K, Chopra R, Kulkarni P. Use of pulse oximetry during nitrous oxide- oxygen inhalation sedation: mandatory or recommended? Eur Arch Paediatr Dent 2022; 23:647-652. [PMID: 35655051 DOI: 10.1007/s40368-022-00717-7] [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] [Received: 01/31/2022] [Accepted: 04/28/2022] [Indexed: 11/30/2022]
Abstract
AIM There is skepticism amongst many dentists about the interference of nitrous oxide with the physiological parameters. This commentary attempts to make clear recommendations on the use of pulse oximeter during nitrous oxide inhalation sedation. BACKGROUND Nitrous oxide is used commonly in dentistry as a tool to reduce fear/ anxiety and build a positive dental attitude. Dentists use pulse oximeter to monitor oxygen saturation during the period of administration of nitrous oxide. There is no consensus amongst various guidelines across the world on the necessity of using pulse oximeter during the period of administration of nitrous oxide CONCLUSION: Pulse oximetry may not be considered mandatory when nitrous oxide gas is being administered for minimal sedation to a healthy patient having no pre- existing diseases/illness.
Collapse
Affiliation(s)
- K Gupta
- Children's Dental Center, 8, FF, MGF Megacity Mall, MG Road, Gurugram, 122002, India.
- Sharad Pawar Dental College, Wardha, India.
- Peoples College of Dental Sciences, Bhopal, India.
| | - R Chopra
- Children's Neurology and Dentistry, Ghaziabad, India
| | - P Kulkarni
- Peoples College of Dental Sciences, Bhopal, India
| |
Collapse
|
6
|
Abstract
Healthcare consumer behavior is influenced by the cumulativeimpact of internal/external factors. Individual considerations,and interplay amongst determinants, are both crucial. Today,customers demand more information, greater options, andreal-time interactions. Customer engagement has becomecrucial. Digital Transformation with emerging technologies likeAI, Blockchain, Telemedicine, etc., helps physicians, optimizessystems, improves patient experience, and reduces humanerrors.This paper discusses factors influencing healthcare consumers’behavior and provides insights into digital technologies toenhance the consumer experience. The qualitative method isused by engaging a closed consumer group in discussion andthrough in-depth interviews. The analysis provides an insightinto the behavior of healthcare consumers.The study finds that the new breed of consumers is wellinformed about healthcare providers’ digital readiness. Thefactors influencing consumers to select healthcare providersinclude digital readiness of the healthcare provider,good customer experience, word of mouth, and brand image.
Collapse
|
7
|
Singh J, Yadav AK, Pakhare A, Kulkarni P, Lokhande L, Soni P, Dadheech M, Gupta P, Masarkar N, Maurya AK, Nema S, Biswas D, Singh S. Comparative analysis of the diagnostic performance of five commercial COVID-19 qRT PCR kits used in India. Sci Rep 2021; 11:22013. [PMID: 34759300 PMCID: PMC8580981 DOI: 10.1038/s41598-021-00852-z] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 08/23/2021] [Indexed: 02/07/2023] Open
Abstract
To meet the unprecedented requirement of diagnostic testing for SARS-CoV-2, a large number of diagnostic kits were authorized by concerned authorities for diagnostic use within a short period of time during the initial phases of the ongoing pandemic. We undertook this study to evaluate the inter-test agreement and other key operational features of 5 such commercial kits that have been extensively used in India for routine diagnostic testing for COVID-19. The five commercial kits were evaluated, using a panel of positive and negative respiratory samples, considering the kit provided by National Institute of Virology, Indian Council of Medical Research (2019-nCoV Kit) as the reference. The positive panel comprised of individuals who fulfilled the 3 criteria of being clinically symptomatic, having history of contact with diagnosed cases and testing positive in the reference kit. The negative panel included both healthy and disease controls, the latter being drawn from individuals diagnosed with other respiratory viral infections. The same protocol of sample collection, same RNA extraction kit and same RT-PCR instrument were used for all the kits. Clinical samples were collected from a panel of 92 cases and 60 control patients, who fulfilled our inclusion criteria. The control group included equal number of healthy individuals and patients infected with other respiratory viruses (n = 30, in each group). We observed varying sensitivity and specificity among the evaluated kits, with LabGun COVID-19 RT-PCR kit showing the highest sensitivity and specificity (94% and 100% respectively), followed by TaqPath COVID-19 Combo and Allplex 2019-nCoV assays. The extent of inter-test agreement was not associated with viral loads of the samples. Poor correlation was observed between Ct values of the same genes amplified using different kits. Our findings reveal the presence of wide heterogeneity and sub-optimal inter-test agreement in the diagnostic performance of the evaluated kits and hint at the need of adopting stringent standards for fulfilling the quality assurance requirements of the COVID-19 diagnostic process.
Collapse
Affiliation(s)
- J Singh
- Department of Microbiology, All India Institute of Medical Sciences, Bhopal, 462020, India
- Translational Medicine Centre, All India Institute of Medical Sciences, Bhopal, India
| | - A K Yadav
- Department of Microbiology, All India Institute of Medical Sciences, Bhopal, 462020, India
| | - A Pakhare
- Department of Community & Family Medicine, All India Institute of Medical Sciences, Bhopal, India
| | - P Kulkarni
- Department of Biochemistry, All India Institute of Medical Sciences, Bhopal, India
| | - L Lokhande
- Department of Microbiology, All India Institute of Medical Sciences, Bhopal, 462020, India
| | - P Soni
- Department of Microbiology, All India Institute of Medical Sciences, Bhopal, 462020, India
| | - M Dadheech
- Department of Microbiology, All India Institute of Medical Sciences, Bhopal, 462020, India
| | - P Gupta
- Department of Microbiology, All India Institute of Medical Sciences, Bhopal, 462020, India
| | - N Masarkar
- Department of Biochemistry, All India Institute of Medical Sciences, Bhopal, India
| | - A K Maurya
- Department of Microbiology, All India Institute of Medical Sciences, Bhopal, 462020, India
| | - S Nema
- Department of Microbiology, All India Institute of Medical Sciences, Bhopal, 462020, India
| | - D Biswas
- Department of Microbiology, All India Institute of Medical Sciences, Bhopal, 462020, India.
| | - S Singh
- Department of Microbiology, All India Institute of Medical Sciences, Bhopal, 462020, India.
| |
Collapse
|
8
|
Apte A, Shrivastava R, Sanghavi S, Mitra M, Ramanan PV, Chhatwal J, Jain S, Chowdhury J, Premkumar S, Kumar R, Palani A, Kaur G, Javadekar N, Kulkarni P, Macina D, Bavdekar A. Multicentric Hospital-Based Surveillance of Pertussis Amongst Infants Admitted in Tertiary Care Facilities in India. Indian Pediatr 2021; 58:709-717. [PMID: 34465657] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
OBJECTIVE To estimate the disease and economic burden of pertussis amongst hospitalised infants in India. DESIGN Multicentric hospital-based surveillance study. PARTICIPANTS Hospitalised infants with clinical suspicion of pertussis based on predefined criteria. OUTCOME MEASURES Proportion of infants with laboratory-confirmed pertussis, economic burden of pertussis amongst hospitalised infants. RESULTS 693 clinically suspected infants were recruited of which 32 (4.62%) infants had laboratory-confirmed pertussis. Progressive cough with post-tussive emesis (50%) and pneumonia (34%) were the common clinical presentations; apnea in young infants was significantly associated with pertussis. Infants with pertussis were more likely to be younger (median age 102.5 days vs.157 days) and born preterm (42.9% vs 24.5%). Almost 30% infants with pertussis had not received vaccine for pertussis with 50% of these infants aged less than 2 months. Pertussis was associated with higher costs of hospitalisation, pharmacy and loss of working days by caregivers as compared to non-pertussis cases. CONCLUSIONS Younger infants, those born preterm and those inadequately immunised against pertussis are at higher risk of pertussis infection. Timely childhood immunisation and introduction of maternal immunisation for pertussis can help in reducing the disease burden.
Collapse
Affiliation(s)
- A Apte
- Department of Pediatrics, KEM Hospital Research Centre, Pune, India
| | - R Shrivastava
- Department of Pediatrics, KEM Hospital Research Centre, Pune, India
| | - S Sanghavi
- Department of Pediatrics, KEM Hospital Research Centre, Pune, India
| | - M Mitra
- Department of Pediatrics, Institute of Child Heath, Kolkata, India
| | - P Venkat Ramanan
- Department of Pediatrics, Sri Ramachandra Medical Centre, Chennai, India
| | - J Chhatwal
- Department of Pediatrics, Christian Medical College and Hospital, Ludhiana, India
| | - S Jain
- Department of Pediatrics, KEM Hospital Research Centre, Pune, India
| | - J Chowdhury
- Department of Pediatrics, Institute of Child Heath, Kolkata, India
| | - S Premkumar
- Department of Pediatrics, Sri Ramachandra Medical Centre, Chennai, India
| | - R Kumar
- Department of Pediatrics, Christian Medical College and Hospital, Ludhiana, India
| | - A Palani
- Department of Pediatrics, Sri Ramachandra Medical Centre, Chennai, India
| | - G Kaur
- Department of Pediatrics, Christian Medical College and Hospital, Ludhiana, India
| | - N Javadekar
- Department of Pediatrics, KEM Hospital Research Centre, Pune, India
| | - P Kulkarni
- Department of Pediatrics, KEM Hospital Research Centre, Pune, India
| | | | - A Bavdekar
- Department of Pediatrics, KEM Hospital Research Centre, Pune, India. Correspondence to: Dr Ashish Bavdekar, Associate Professor, Consultant Pediatric Gastroenterologist, Department of Pediatrics, KEM Hospital, Rasta Peth, Pune, Maharashtra 411 011.
| |
Collapse
|
9
|
Apte A, Shrivastava R, Sanghavi S, Mitra M, Ramanan PV, Chhatwal J, Jain S, Chowdhury J, Premkumar S, Kumar R, Palani A, Kaur G, Javadekar N, Kulkarni P, Macina D, Bavdekar A. Multicentric Hospital-Based Surveillance of Pertussis Amongst Infants Admitted in Tertiary Care Facilities in India. Indian Pediatr 2021. [DOI: 10.1007/s13312-021-2276-5] [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: 12/19/2022]
|
10
|
Sharma A, Shah M, Sane H, Gokulchandran N, Paranjape A, Khubchandani P, Captain J, Shirke S, Kulkarni P. Intravenous ozonized saline therapy as prophylaxis for healthcare workers (HCWs) in a dedicated COVID-19 hospital in India - A retrospective study. Eur Rev Med Pharmacol Sci 2021; 25:3632-3639. [PMID: 34002840 DOI: 10.26355/eurrev_202105_25847] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE In the current pandemic, Health Care Workers (HCWs) are at a high risk of developing COVID-19. Preventive methods like the use of personal protective equipment, isolation, social distancing, and chemoprophylaxis show limited benefit. Despite standard prophylaxis, many of the HCWs develop COVID-19. Medical ozone therapy has immunomodulatory, antioxidant and antiviral effect, and, therefore, it can be explored as prophylaxis for COVID-19. PATIENTS AND METHODS We conducted a retrospective controlled cohort study. IV ozonized saline was administered once a day for a total of 4 days in one month in addition to standard prophylaxis for COVID-19 to HCWs in a dedicated COVID hospital. Fresh ozonized saline was prepared for every administration and was given over 1 hour. RESULTS There were 235 HCWs, 64 received the ozone prophylaxis and 171 did not. The incidence of COVID-19 was significantly (p=0.04) lesser in HCWs that received ozone prophylaxis (4.6%) as compared to those who did not (14.03%). The benefit was seen irrespective of the risk of exposure. In the red zone, 8.69% of the HCWs who received ozone prophylaxis tested positive as opposed to 15.3% of those who did not. In the orange zone, 4.34% of the HCWs who received ozone prophylaxis tested positive, remarkably lesser than those who did not (20%). In the green zone, none of the HCWs who received ozone prophylaxis tested positive; however, 3.4% of the HCWs who did not receive ozone prophylaxis tested positive. No major adverse events were noted. CONCLUSIONS IV ozonized saline can be used in addition to the standard prophylactic regimen for the prevention of COVID-19 in HCWs. Prospective larger studies are required to establish the potency of IV ozonized saline as prophylaxis.
Collapse
Affiliation(s)
- A Sharma
- Department of Medical Services and Clinical Research, NeuroGen Brain & Spine Institute, Navi Mumbai, Maharashtra, India.
| | | | | | | | | | | | | | | | | |
Collapse
|
11
|
Solaiman S, Allard SM, Callahan MT, Jiang C, Handy E, East C, Haymaker J, Bui A, Craddock H, Murray R, Kulkarni P, Anderson-Coughlin B, Craighead S, Gartley S, Vanore A, Duncan R, Foust D, Taabodi M, Sapkota A, May E, Hashem F, Parveen S, Kniel K, Sharma M, Sapkota AR, Micallef SA. Longitudinal Assessment of the Dynamics of Escherichia coli, Total Coliforms, Enterococcus spp., and Aeromonas spp. in Alternative Irrigation Water Sources: a CONSERVE Study. Appl Environ Microbiol 2020; 86:e00342-20. [PMID: 32769196 PMCID: PMC7531960 DOI: 10.1128/aem.00342-20] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 08/02/2020] [Indexed: 11/20/2022] Open
Abstract
As climate change continues to stress freshwater resources, we have a pressing need to identify alternative (nontraditional) sources of microbially safe water for irrigation of fresh produce. This study is part of the center CONSERVE, which aims to facilitate the adoption of adequate agricultural water sources. A 26-month longitudinal study was conducted at 11 sites to assess the prevalence of bacteria indicating water quality, fecal contamination, and crop contamination risk (Escherichia coli, total coliforms [TC], Enterococcus, and Aeromonas). Sites included nontidal freshwater rivers/creeks (NF), a tidal brackish river (TB), irrigation ponds (PW), and reclaimed water sites (RW). Water samples were filtered for bacterial quantification. E. coli, TC, enterococci (∼86%, 98%, and 90% positive, respectively; n = 333), and Aeromonas (∼98% positive; n = 133) were widespread in water samples tested. Highest E. coli counts were in rivers, TC counts in TB, and enterococci in rivers and ponds (P < 0.001 in all cases) compared to other water types. Aeromonas counts were consistent across sites. Seasonal dynamics were detected in NF and PW samples only. E. coli counts were higher in the vegetable crop-growing (May-October) than nongrowing (November-April) season in all water types (P < 0.05). Only one RW and both PW sites met the U.S. Food Safety Modernization Act water standards. However, implementation of recommended mitigation measures of allowing time for microbial die-off between irrigation and harvest would bring all other sites into compliance within 2 days. This study provides comprehensive microbial data on alternative irrigation water and serves as an important resource for food safety planning and policy setting.IMPORTANCE Increasing demands for fresh fruit and vegetables, a variable climate affecting agricultural water availability, and microbial food safety goals are pressing the need to identify new, safe, alternative sources of irrigation water. Our study generated microbial data collected over a 2-year period from potential sources of irrigation (rivers, ponds, and reclaimed water sites). Pond water was found to comply with Food Safety Modernization Act (FSMA) microbial standards for irrigation of fruit and vegetables. Bacterial counts in reclaimed water, a resource that is not universally allowed on fresh produce in the United States, generally met microbial standards or needed minimal mitigation. We detected the most seasonality and the highest microbial loads in river water, which emerged as the water type that would require the most mitigation to be compliant with established FSMA standards. This data set represents one of the most comprehensive, longitudinal analyses of alternative irrigation water sources in the United States.
Collapse
Affiliation(s)
- Sultana Solaiman
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, Maryland, USA
| | - Sarah M Allard
- Maryland Institute for Applied and Environmental Health, School of Public Health, University of Maryland, College Park, Maryland, USA
| | - Mary Theresa Callahan
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, Maryland, USA
| | - Chengsheng Jiang
- Maryland Institute for Applied and Environmental Health, School of Public Health, University of Maryland, College Park, Maryland, USA
| | - Eric Handy
- Environmental Microbial and Food Safety Laboratory, USDA-ARS, Beltsville, Maryland, USA
| | - Cheryl East
- Environmental Microbial and Food Safety Laboratory, USDA-ARS, Beltsville, Maryland, USA
| | - Joseph Haymaker
- Department of Agriculture, Food and Resource Sciences, University of Maryland Eastern Shore, Princess Anne, Maryland, USA
| | - Anthony Bui
- Maryland Institute for Applied and Environmental Health, School of Public Health, University of Maryland, College Park, Maryland, USA
| | - Hillary Craddock
- Maryland Institute for Applied and Environmental Health, School of Public Health, University of Maryland, College Park, Maryland, USA
| | - Rianna Murray
- Maryland Institute for Applied and Environmental Health, School of Public Health, University of Maryland, College Park, Maryland, USA
| | - Prachi Kulkarni
- Maryland Institute for Applied and Environmental Health, School of Public Health, University of Maryland, College Park, Maryland, USA
| | | | - Shani Craighead
- Department of Animal and Food Sciences, University of Delaware, Newark, Delaware, USA
| | - Samantha Gartley
- Department of Animal and Food Sciences, University of Delaware, Newark, Delaware, USA
| | - Adam Vanore
- Department of Animal and Food Sciences, University of Delaware, Newark, Delaware, USA
| | - Rico Duncan
- Department of Agriculture, Food and Resource Sciences, University of Maryland Eastern Shore, Princess Anne, Maryland, USA
| | - Derek Foust
- Department of Agriculture, Food and Resource Sciences, University of Maryland Eastern Shore, Princess Anne, Maryland, USA
| | - Maryam Taabodi
- Department of Agriculture, Food and Resource Sciences, University of Maryland Eastern Shore, Princess Anne, Maryland, USA
| | - Amir Sapkota
- Maryland Institute for Applied and Environmental Health, School of Public Health, University of Maryland, College Park, Maryland, USA
| | - Eric May
- Department of Agriculture, Food and Resource Sciences, University of Maryland Eastern Shore, Princess Anne, Maryland, USA
| | - Fawzy Hashem
- Department of Agriculture, Food and Resource Sciences, University of Maryland Eastern Shore, Princess Anne, Maryland, USA
| | - Salina Parveen
- Department of Agriculture, Food and Resource Sciences, University of Maryland Eastern Shore, Princess Anne, Maryland, USA
| | - Kalmia Kniel
- Department of Animal and Food Sciences, University of Delaware, Newark, Delaware, USA
| | - Manan Sharma
- Environmental Microbial and Food Safety Laboratory, USDA-ARS, Beltsville, Maryland, USA
| | - Amy R Sapkota
- Maryland Institute for Applied and Environmental Health, School of Public Health, University of Maryland, College Park, Maryland, USA
| | - Shirley A Micallef
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, Maryland, USA
- Center for Food Safety and Security Systems, University of Maryland, College Park, Maryland, USA
| |
Collapse
|
12
|
Kulkarni P. Still I rise. Indian J Med Paediatr Oncol 2020. [DOI: 10.4103/ijmpo.ijmpo_226_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
- Prachi Kulkarni
- 303, Maxima A, CasaBella Gold, Lodha Palava City, Dombivali East - 421204, Maharashtra
| |
Collapse
|
13
|
Kim S, Bradshaw R, Kulkarni P, Allard S, Chiu PC, Sapkota AR, Newell MJ, Handy ET, East CL, Kniel KE, Sharma M. Zero-Valent Iron-Sand Filtration Reduces Escherichia coli in Surface Water and Leafy Green Growing Environments. Front Sustain Food Syst 2020. [DOI: 10.3389/fsufs.2020.00112] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
14
|
Malayil L, Chattopadhyay S, Kulkarni P, Hittle L, Clark PI, Mongodin EF, Sapkota AR. Mentholation triggers brand-specific shifts in the bacterial microbiota of commercial cigarette products. Appl Microbiol Biotechnol 2020; 104:6287-6297. [PMID: 32448997 DOI: 10.1007/s00253-020-10681-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 05/05/2020] [Accepted: 05/10/2020] [Indexed: 02/08/2023]
Abstract
Bacterial communities are integral constituents of tobacco products. They originate from tobacco plants and are acquired during manufacturing processes, where they play a role in the production of tobacco-specific nitrosamines. In addition, tobacco bacterial constituents may play an important role in the development of infectious and chronic diseases among users. Nevertheless, tobacco bacterial communities have been largely unexplored, and the influence of tobacco flavor additives such as menthol (a natural antimicrobial) on tobacco bacterial communities is unclear. To bridge this knowledge gap, time series experiments including 5 mentholated and non-mentholated commercially available cigarettes-Marlboro red (non-menthol), Marlboro menthol, Newport menthol box, Newport menthol gold, and Newport non-menthol-were conducted. Each brand was stored under three different temperature and relative humidity conditions. To characterize bacterial communities, total DNA was extracted on days 0 and 14. Resulting DNA was purified and subjected to PCR of the V3V4 region of the 16S rRNA gene, followed by sequencing on the Illumina HiSeq platform and analysis using the QIIME, phyloseq, metagenomeSeq, and DESeq software packages. Ordination analyses showed that the bacterial community composition of Marlboro cigarettes was different from that of Newport cigarettes. Additionally, bacterial profiles significantly differed between mentholated and non-mentholated Newports. Independently of storage conditions, tobacco brands were dominated by Proteobacteria, with the most dominant bacterial genera being Pseudomonas, unclassified Enterobacteriaceae, Bacillus, Erwinia, Sphingomonas, Acinetobacter, Agrobacterium, Staphylococcus, and Terribacillus. These data suggest that the bacterial communities of tobacco products differ across brands and that mentholation of tobacco can alter bacterial community composition of select brands. KEY POINTS: • Bacterial composition differed between the two brands of cigarettes. • Mentholation impacts cigarette microbiota. • Pseudomonas and Bacillus dominated the commercial cigarettes. Graphical abstract.
Collapse
Affiliation(s)
- Leena Malayil
- Maryland Institute for Applied Environmental Health, School of Public Health, University of Maryland, College Park, MD, 20742, USA
| | - Suhana Chattopadhyay
- Maryland Institute for Applied Environmental Health, School of Public Health, University of Maryland, College Park, MD, 20742, USA
| | - Prachi Kulkarni
- Maryland Institute for Applied Environmental Health, School of Public Health, University of Maryland, College Park, MD, 20742, USA
| | - Lauren Hittle
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Pamela I Clark
- Department of Behavioral and Community Health, University of Maryland School of Public Health, College Park, MD, USA
| | - Emmanuel F Mongodin
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Amy R Sapkota
- Maryland Institute for Applied Environmental Health, School of Public Health, University of Maryland, College Park, MD, 20742, USA.
| |
Collapse
|
15
|
Kimball A, Kerbusch T, van Aarle F, Kulkarni P, Li Q, Blauvelt A, Papp K, Reich K, Montgomery D. How many people develop anti-drug antibodies to the biologic drug tildrakizumab, and what impact does this have on the effectiveness of their treatment. Br J Dermatol 2020. [DOI: 10.1111/bjd.18662] [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: 11/28/2022]
|
16
|
Kimball A, Kerbusch T, van Aarle F, Kulkarni P, Li Q, Blauvelt A, Papp K, Reich K, Montgomery D. 有多少人开发生物制剂 tildrakizumab 的抗药抗体, 以及这对其治疗有效性产生哪些影响. Br J Dermatol 2020. [DOI: 10.1111/bjd.18679] [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: 11/27/2022]
|
17
|
Kimball A, Kerbusch T, van Aarle F, Kulkarni P, Li Q, Blauvelt A, Papp K, Reich K, Montgomery D. Assessment of the effects of immunogenicity on the pharmacokinetics, efficacy and safety of tildrakizumab. Br J Dermatol 2020; 182:180-189. [PMID: 30916381 PMCID: PMC6972989 DOI: 10.1111/bjd.17918] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/19/2019] [Indexed: 12/26/2022]
Abstract
BACKGROUND We evaluated antidrug antibody (ADA) development in patients with chronic plaque psoriasis from three clinical trials of tildrakizumab, a humanized anti-interleukin-23p19 monoclonal antibody (P05495, reSURFACE 1 and reSURFACE 2). OBJECTIVES To determine the effects of immunogenicity on the pharmacokinetics, efficacy and safety of tildrakizumab. METHODS In 1400 (weeks 12-16) and 780 (weeks 52-64) evaluable patients randomized to tildrakizumab 100 or 200 mg, treatment-emergent ADA-positive (TE-POS) patients were identified and characterized for neutralizing antibodies (NAbs). Pharmacokinetics, safety and efficacy were evaluated by ADA status. RESULTS In patients treated with tildrakizumab 100 or 200 mg continuously, < 7% were inconclusive at 52-64 weeks. In long-term data through 52-64 weeks, the incidence of TE-POS was 6·5% (100 mg) and 8·2% (200 mg) and the incidence of TE-POS NAb-POS was 2·5% (100 mg) and 3·2% (200 mg). TE-POS NAb-POS patients had modestly increased median tildrakizumab clearance (36·5%) compared with ADA-NEG patients. Percentage Psoriasis Area and Severity Index improvements in TE-POS NAb-POS vs. ADA-NEG patients on continuous treatment through week 52 were 76% (n = 10) vs. 91% (n = 342) for 100 mg and 77% (n = 12) vs. 87% (n = 299) for 200 mg. The incidence of potential immunogenicity-related adverse events did not indicate a clear trend in any positive ADA patient category compared with ADA-NEG patients through weeks 52-64. The effects of ADA on pharmacokinetics, efficacy and safety at 12-16 weeks were also summarized. CONCLUSIONS ADA development with tildrakizumab treatment for 52-64 weeks was low; around 3% of patients developed TE-POS NAb-POS ADAs and showed lower serum concentrations and corresponding reduced efficacy. No relationship between ADAs and safety was observed. What's already known about this topic? Unwanted immune responses - for example immunogenicity and antidrug antibodies (ADAs) - have been observed with therapeutic monoclonal antibodies and can affect efficacy and safety. Tildrakizumab is a humanized monoclonal antibody targeting interleukin-23 and is currently approved for patients with plaque psoriasis. What does this study add? ADA development in tildrakizumab-treated patients with psoriasis over 52 weeks was low. The small proportion of patients who had treatment-emergent ADAs and had neutralizing antibodies experienced lower serum tildrakizumab concentrations and reduced efficacy. No relationship between ADAs and safety events was observed.
Collapse
Affiliation(s)
| | | | | | | | - Q. Li
- Merck & Co., Inc.KenilworthNJU.S.A
| | - A. Blauvelt
- Oregon Medical Research CenterPortlandORU.S.A
| | - K.A. Papp
- Probity Medical ResearchWaterlooONCanada
| | - K. Reich
- Center for Translational Research in Inflammatory Skin Diseases, Institute for Health Services Research in Dermatology and Nursing, University Medical Center Hamburg‐Eppendorf, and Skinflammation centerHamburgGermany
- DermatologikumBerlinGermany
| | | |
Collapse
|
18
|
Smyth EM, Chattopadhyay S, Babik K, Reid M, Chopyk J, Malayil L, Kulkarni P, Hittle LE, Clark PI, Sapkota AR, Mongodin EF. The Bacterial Communities of Little Cigars and Cigarillos Are Dynamic Over Time and Varying Storage Conditions. Front Microbiol 2019; 10:2371. [PMID: 31708882 PMCID: PMC6824217 DOI: 10.3389/fmicb.2019.02371] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Accepted: 09/30/2019] [Indexed: 12/26/2022] Open
Abstract
Despite their potential importance with regard to tobacco-related health outcomes, as well as their hypothesized role in the production of tobacco-specific N-nitrosamines, bacterial constituents of tobacco products lack characterization. Specifically, to our knowledge, there has been no comprehensive characterization of the effects of storage conditions on the bacterial communities associated with little cigars and cigarillos. To address this knowledge gap, we characterized the bacterial community composition of the tobacco and wrapper components of the following four products: Swisher Sweets Original; Swisher Sweets, Sweet Cherry; Cheyenne Cigars Full Flavor 100's; and Cheyenne Menthol Box. Each product was stored under three different conditions of temperature and relative humidity to mimic different user storage conditions: room (20°C 50% RH), refrigerator (5°C 18% RH) and pocket (25°C 30% RH). On days 0, 5, 9 and 14, subsamples were collected, the wrapper and tobacco were separated, and their total DNA was extracted separately and purified. Resulting DNA was then used in PCR assays targeting the V3 V4 region of the bacterial 16S rRNA gene, followed by sequencing using Illumina HiSeq 300bp PE. Resulting sequences were processed using the Quantitative Insights Into Microbial Ecology (QIIME) software package, followed by analyses in R using the Phyloseq and Vegan packages. A single bacterial phylum, Firmicutes, dominated in the wrapper subsamples whereas the tobacco subsamples were dominated by Proteobacteria. Cheyenne Menthol Box (CMB) samples were characterized by significant differential abundances for 23 bacterial operational taxonomic units (OTUs) in tobacco subsamples and 27 OTUs in the wrapper subsamples between day 0 and day 14 under all conditions. OTUs from the genera Acinetobacter and Bacillus significantly increased in the CMB tobacco subsamples, and OTUs from Bacillus, Streptococcus, Lactobacillus, and Enterococcus significantly increased in the CMB wrapper subsamples over time. These initial results suggest that the bacterial communities of little cigars and cigarillos are dynamic over time and varying storage conditions.
Collapse
Affiliation(s)
- Eoghan M. Smyth
- Maryland Institute for Applied Environmental Health, School of Public Health, University of Maryland, College Park, College Park, MD, United States
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Suhana Chattopadhyay
- Maryland Institute for Applied Environmental Health, School of Public Health, University of Maryland, College Park, College Park, MD, United States
| | - Kelsey Babik
- Maryland Institute for Applied Environmental Health, School of Public Health, University of Maryland, College Park, College Park, MD, United States
| | - Molly Reid
- Maryland Institute for Applied Environmental Health, School of Public Health, University of Maryland, College Park, College Park, MD, United States
| | - Jessica Chopyk
- Maryland Institute for Applied Environmental Health, School of Public Health, University of Maryland, College Park, College Park, MD, United States
| | - Leena Malayil
- Maryland Institute for Applied Environmental Health, School of Public Health, University of Maryland, College Park, College Park, MD, United States
| | - Prachi Kulkarni
- Maryland Institute for Applied Environmental Health, School of Public Health, University of Maryland, College Park, College Park, MD, United States
| | - Lauren E. Hittle
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Pamela I. Clark
- Department of Behavioral and Community Health, School of Public Health, University of Maryland, College Park, College Park, MD, United States
| | - Amy R. Sapkota
- Maryland Institute for Applied Environmental Health, School of Public Health, University of Maryland, College Park, College Park, MD, United States
| | - Emmanuel F. Mongodin
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, MD, United States
| |
Collapse
|
19
|
Kulkarni P. Calcium hydroxide an efficient catalyst for synthesis of arylethylidene malononitrile. B CHEM SOC ETHIOPIA 2019. [DOI: 10.4314/bcse.v33i2.18] [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
|
20
|
Panthi S, Sapkota AR, Raspanti G, Allard SM, Bui A, Craddock HA, Murray R, Zhu L, East C, Handy E, Callahan MT, Haymaker J, Kulkarni P, Anderson B, Craighead S, Gartley S, Vanore A, Betancourt WQ, Duncan R, Foust D, Sharma M, Micallef SA, Gerba C, Parveen S, Hashem F, May E, Kniel K, Pop M, Ravishankar S, Sapkota A. Pharmaceuticals, herbicides, and disinfectants in agricultural water sources. Environ Res 2019; 174:1-8. [PMID: 31015109 DOI: 10.1016/j.envres.2019.04.011] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 04/09/2019] [Accepted: 04/12/2019] [Indexed: 06/09/2023]
Abstract
Agricultural water withdrawals account for the largest proportion of global freshwater use. Increasing municipal water demands and droughts are straining agricultural water supplies. Therefore, alternative solutions to agricultural water crises are urgently needed, including the use of nontraditional water sources such as advanced treated wastewater or reclaimed water, brackish water, return flows, and effluent from produce processing facilities. However, it is critical to ensure that such usage does not compromise soil, crop, and public health. Here, we characterized five different nontraditional water types (n = 357 samples) for the presence of pharmaceuticals, herbicides, and disinfectants using ultra-high-pressure liquid chromatography tandem mass spectrometry based method (UPLC-MS/MS). We then evaluated whether the levels of these contaminants were influenced by season. The highest level of herbicides (atrazine) was detected in untreated pond water (median concentration 135.9 ng/L). Reclaimed water had the highest levels of antibiotics and stimulants including azithromycin (215 ng/L), sulfamethoxazole (232.1 ng/L), and caffeine (89.4 ng/L). Produce processing plant water also tended to have high levels of atrazine (102.7 ng/L) and ciprofloxacin (80.1 ng/L). In addition, we observed seasonal variability across water types, with the highest atrazine concentrations observed during summer months, while the highest median azithromycin concentrations were observed in reclaimed water during the winter season. Further studies are needed to evaluate if economically feasible on-farm water treatment technologies can effectively remove such contaminants from nontraditional irrigation water sources.
Collapse
Affiliation(s)
- Suraj Panthi
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, MD 20742, USA
| | - Amy R Sapkota
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, MD 20742, USA
| | - Greg Raspanti
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, MD 20742, USA
| | - Sarah M Allard
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, MD 20742, USA
| | - Anthony Bui
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, MD 20742, USA
| | - Hillary A Craddock
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, MD 20742, USA
| | - Rianna Murray
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, MD 20742, USA
| | - Libin Zhu
- School of Animal and Comparative Biomedical Sciences, University of Arizona, 1117 E. Lowell Street, Tucson, AZ 85721, USA
| | - Cheryl East
- Environmental Microbial & Food Safety Lab, USDA-ARS, 10300 Baltimore Avenue, Beltsville, MD 20705, USA
| | - Eric Handy
- Environmental Microbial & Food Safety Lab, USDA-ARS, 10300 Baltimore Avenue, Beltsville, MD 20705, USA
| | - Mary Theresa Callahan
- Department of Plant Science and Landscape Architecture, University of Maryland, 2126 Plant Sciences Building, College Park, MD 20742, USA
| | - Joseph Haymaker
- Department of Agriculture, Food, and Resource Sciences, University of Maryland Eastern Shore, Princess Anne, MD 21853, USA
| | - Prachi Kulkarni
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, MD 20742, USA
| | - Brienna Anderson
- Department of Animal and Food Sciences, University of Delaware, 044 Townsend Hall, Newark, DE 19716, USA
| | - Shani Craighead
- Department of Animal and Food Sciences, University of Delaware, 044 Townsend Hall, Newark, DE 19716, USA
| | - Samantha Gartley
- Department of Animal and Food Sciences, University of Delaware, 044 Townsend Hall, Newark, DE 19716, USA
| | - Adam Vanore
- Department of Animal and Food Sciences, University of Delaware, 044 Townsend Hall, Newark, DE 19716, USA
| | - Walter Q Betancourt
- Department of Soil, Water, and Environmental Science, University of Arizona, 2959 W Calle Agua Nueva, Tucson, AZ 85745, USA
| | - Rico Duncan
- Department of Agriculture, Food, and Resource Sciences, University of Maryland Eastern Shore, Princess Anne, MD 21853, USA
| | - Derek Foust
- Department of Agriculture, Food, and Resource Sciences, University of Maryland Eastern Shore, Princess Anne, MD 21853, USA
| | - Manan Sharma
- Environmental Microbial & Food Safety Lab, USDA-ARS, 10300 Baltimore Avenue, Beltsville, MD 20705, USA
| | - Shirley A Micallef
- Department of Plant Science and Landscape Architecture, University of Maryland, 2126 Plant Sciences Building, College Park, MD 20742, USA
| | - Charles Gerba
- Department of Soil, Water, and Environmental Science, University of Arizona, 2959 W Calle Agua Nueva, Tucson, AZ 85745, USA
| | - Salina Parveen
- Department of Agriculture, Food, and Resource Sciences, University of Maryland Eastern Shore, Princess Anne, MD 21853, USA
| | - Fawzy Hashem
- Department of Agriculture, Food, and Resource Sciences, University of Maryland Eastern Shore, Princess Anne, MD 21853, USA
| | - Eric May
- Department of Agriculture, Food, and Resource Sciences, University of Maryland Eastern Shore, Princess Anne, MD 21853, USA
| | - Kalmia Kniel
- Department of Animal and Food Sciences, University of Delaware, 044 Townsend Hall, Newark, DE 19716, USA
| | - Mihai Pop
- Department of Computer Science & the Center for Bioinformatics and Computational Biology, University of Maryland, 8223 Paint Brach Drive, College Park, MD 20742, USA
| | - Sadhana Ravishankar
- School of Animal and Comparative Biomedical Sciences, University of Arizona, 1117 E. Lowell Street, Tucson, AZ 85721, USA
| | - Amir Sapkota
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, MD 20742, USA.
| |
Collapse
|
21
|
Marik CM, Anderson-Coughlin B, Gartley S, Craighead S, Bradshaw R, Kulkarni P, Sharma M, Kniel KE. The efficacy of zero valent iron-sand filtration on the reduction of Escherichia coli and Listeria monocytogenes in surface water for use in irrigation. Environ Res 2019; 173:33-39. [PMID: 30884436 DOI: 10.1016/j.envres.2019.02.028] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 07/30/2018] [Revised: 02/17/2019] [Accepted: 02/19/2019] [Indexed: 06/09/2023]
Abstract
The use of surface and recycled water sources for irrigation can reduce demand on critical groundwater resources. Treatment or mitigation may be necessary for the use of these alternative water sources in order to reduce risk associated with microbial pathogens present in the water. In this study, the efficacy of a zero-valent iron (ZVI) sand filter was assessed for the reduction of Listeria monocytogenes and Escherichia coli in surface water. Water recovered from an agricultural pond was inoculated with E. coli TVS353 and an environmental L. monocytogenes isolate at 7 Log10 CFU/mL and horizontally filtered over a six-month period through a PVC pipe filter, filled with 35%:65% (volume:volume) ZVI:sand or sand alone. Filtered water was used to irrigate lettuce and bacterial persistence on lettuce leaves was determined for 7 days post-irrigation. Both ZVI:sand-filtered water and sand-filtered water contained significantly (p < 0.005) lower levels of E. coli and L. monocytogenes compared to initial unfiltered inoculated water. Population reductions of E. coli and L. monocytogenes were comparable after sand filtration. However, ZVI:sand filtration resulted in significantly greater population reductions of L. monocytogenes (P < 0.05) compared to E. coli. Populations of E. coli on leaves of lettuce plants irrigated with ZVI:sand-filtered water were not significantly lower than populations on plants irrigated with sand-filtered irrigation water over the 7-day period. However, populations of L. monocytogenes on lettuce leaves irrigated with ZVI-treated water were significantly lower than counts on plants irrigated with sand-filtered irrigation water on days 3 and 4 post irrigation (p = 0.052 and p = 0.042 for days 3 and 4, respectively. The differences observed in reductions of L. monocytogenes and E. coli by ZVI filtration is due to the differing effect that ZVI disruption has on Gram-positive and Gram-negative cell walls and membranes. ZVI- sand filters show promising results as an inexpensive on-farm technology for the mitigation of enteric foodborne bacterial populations in pond water over a six-month period.
Collapse
Affiliation(s)
- Claire M Marik
- Department of Animal and Food Science, University of Delaware, Newark, DE, USA
| | | | - Samantha Gartley
- Department of Animal and Food Science, University of Delaware, Newark, DE, USA
| | - Shani Craighead
- Department of Animal and Food Science, University of Delaware, Newark, DE, USA
| | - Rhodel Bradshaw
- US Department of Agriculture - ARS, Environmental Microbial and Food Safety Laboratory, Beltsville, MD, USA
| | - Prachi Kulkarni
- US Department of Agriculture - ARS, Environmental Microbial and Food Safety Laboratory, Beltsville, MD, USA
| | - Manan Sharma
- US Department of Agriculture - ARS, Environmental Microbial and Food Safety Laboratory, Beltsville, MD, USA
| | - Kalmia E Kniel
- Department of Animal and Food Science, University of Delaware, Newark, DE, USA.
| |
Collapse
|
22
|
Haymaker J, Sharma M, Parveen S, Hashem F, May EB, Handy ET, White C, East C, Bradshaw R, Micallef SA, Callahan MT, Allard S, Anderson B, Craighead S, Gartley S, Vanore A, Kniel KE, Solaiman S, Bui A, Murray R, Craddock HA, Kulkarni P, Foust D, Duncan R, Taabodi M, Sapkota AR. Prevalence of Shiga-toxigenic and atypical enteropathogenic Escherichia coli in untreated surface water and reclaimed water in the Mid-Atlantic U.S. Environ Res 2019; 172:630-636. [PMID: 30878734 DOI: 10.1016/j.envres.2019.02.019] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [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: 07/27/2018] [Revised: 02/08/2019] [Accepted: 02/12/2019] [Indexed: 06/09/2023]
Abstract
The microbial quality of irrigation water has increasingly become a concern as a source of contamination for fruits and vegetables. Non-traditional sources of water are being used by more and more growers in smaller, highly diversified farms in the Mid-Atlantic region of the U.S. Shiga-toxigenic E. coli (STEC) have been responsible for several outbreaks of infections associated with the consumption of leafy greens. Our study evaluated the prevalence of the "big seven" STEC serogroups and the associated enterohemorrhagic E. coli (EHEC) virulence factors (VF) genes in conventional and nontraditional irrigation waters in the Mid-Atlantic region of the U.S. Water samples (n = 510) from 170 sampling events were collected from eight untreated surface water sites, two wastewater reclamation facilities, and one vegetable processing plant, over a 12-month period. Ten liters of water were filtered through Modified Moore swabs (MMS); swabs were then enriched into Universal Pre-enrichment Broth (UPB), followed by enrichment into non-O157 STEC R&F broth and isolation on R & F non-O157 STEC chromogenic plating medium. Isolates (n = 2489) from enriched MMS from water samples were screened for frequently reported STEC serogroups that cause foodborne illness: O26, O45, O103, O111, O121, O145, and O157, along with VF genes stx1, stx2, eae, and ehxA. Through this screening process, STEC isolates were found in 2.35% (12/510) of water samples, while 9.0% (46/510) contained an atypical enteropathogenic E. coli (aEPEC) isolate. The eae gene (n = 88 isolates) was the most frequently detected EHEC VF of the isolates screened. The majority of STEC isolates (stx1 or stx2) genes mainly came from either a pond or reclamation pond water site on two specific dates, potentially indicating that these isolates were not spatially or temporally distributed among the sampling sites. STEC isolates at reclaimed water sites may have been introduced after wastewater treatment. None of the isolates containing eae were determined to be Escherichia albertii. Our work showed that STEC prevalence in Mid-Atlantic untreated surface waters over a 12-month period was lower than the prevalence of atypical EPEC.
Collapse
Affiliation(s)
- Joseph Haymaker
- University of Maryland Eastern Shore, Department of Agriculture and Resource Sciences, Princess Anne, MD, United States
| | - Manan Sharma
- United States Department of Agriculture, Agricultural Research Service, Northeast Area, Beltsville Agricultural Research Center, Environmental Microbial and Food Safety Laboratory, Beltsville, MD, United States.
| | - Salina Parveen
- University of Maryland Eastern Shore, Department of Agriculture and Resource Sciences, Princess Anne, MD, United States
| | - Fawzy Hashem
- University of Maryland Eastern Shore, Department of Agriculture and Resource Sciences, Princess Anne, MD, United States
| | - Eric B May
- University of Maryland Eastern Shore, Department of Agriculture and Resource Sciences, Princess Anne, MD, United States
| | - Eric T Handy
- United States Department of Agriculture, Agricultural Research Service, Northeast Area, Beltsville Agricultural Research Center, Environmental Microbial and Food Safety Laboratory, Beltsville, MD, United States
| | - Chanelle White
- University of Maryland Eastern Shore, Department of Agriculture and Resource Sciences, Princess Anne, MD, United States
| | - Cheryl East
- United States Department of Agriculture, Agricultural Research Service, Northeast Area, Beltsville Agricultural Research Center, Environmental Microbial and Food Safety Laboratory, Beltsville, MD, United States
| | - Rhodel Bradshaw
- United States Department of Agriculture, Agricultural Research Service, Northeast Area, Beltsville Agricultural Research Center, Environmental Microbial and Food Safety Laboratory, Beltsville, MD, United States
| | - Shirley A Micallef
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, MD, United States
| | - Mary Theresa Callahan
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, MD, United States
| | - Sarah Allard
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, MD, United States
| | - Brienna Anderson
- University of Delaware, Department of Animal and Food Sciences, Newark, DE 19716, United States
| | - Shani Craighead
- University of Delaware, Department of Animal and Food Sciences, Newark, DE 19716, United States
| | - Samantha Gartley
- University of Delaware, Department of Animal and Food Sciences, Newark, DE 19716, United States
| | - Adam Vanore
- University of Delaware, Department of Animal and Food Sciences, Newark, DE 19716, United States
| | - Kalmia E Kniel
- University of Delaware, Department of Animal and Food Sciences, Newark, DE 19716, United States
| | - Sultana Solaiman
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, MD, United States
| | - Anthony Bui
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, MD, United States
| | - Rianna Murray
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, MD, United States
| | - Hillary A Craddock
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, MD, United States
| | - Prachi Kulkarni
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, MD, United States
| | - Derek Foust
- University of Maryland Eastern Shore, Department of Agriculture and Resource Sciences, Princess Anne, MD, United States
| | - Rico Duncan
- University of Maryland Eastern Shore, Department of Agriculture and Resource Sciences, Princess Anne, MD, United States
| | - Maryam Taabodi
- University of Maryland Eastern Shore, Department of Agriculture and Resource Sciences, Princess Anne, MD, United States
| | - Amy R Sapkota
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, MD, United States
| |
Collapse
|
23
|
Kulkarni P, Raspanti GA, Bui AQ, Bradshaw RN, Kniel KE, Chiu PC, Sharma M, Sapkota A, Sapkota AR. Zerovalent iron-sand filtration can reduce the concentration of multiple antimicrobials in conventionally treated reclaimed water. Environ Res 2019; 172:301-309. [PMID: 30822564 DOI: 10.1016/j.envres.2019.02.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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: 06/01/2018] [Revised: 01/24/2019] [Accepted: 02/08/2019] [Indexed: 06/09/2023]
Abstract
Irrigation with reclaimed water is increasing in areas that lack access to, and infrastructure for, high-level treatment and distribution. Antimicrobial residues are known to persist in conventionally treated reclaimed water, necessitating the investigation of reuse site-based mitigation options to further reduce these contaminants. We examined the effectiveness of a 50:50 volume/volume, particle matched, micro-scale zerovalent iron (ZVI)-sand filter in reducing concentrations of mixtures of antimicrobials present in pH-unadjusted conventionally treated reclaimed water. Twelve antimicrobials (azithromycin, ciprofloxacin, erythromycin, linezolid, oxacillin, oxolinic acid, penicillin G, pipemidic acid, sulfamethoxazole, triclocarban, tetracycline and vancomycin) were quantified using high performance-liquid chromatography-tandem mass spectrometry in reclaimed water, and ZVI-sand filtered reclaimed water, in a two-month long greenhouse-based experiment. Data were analyzed using a non-parametric rank-based approach. ZVI-sand filtration significantly reduced concentrations of azithromycin, ciprofloxacin, oxolinic acid, penicillin G, sulfamethoxazole, linezolid, pipemidic acid and vancomycin. Azithromycin, the antimicrobial with the highest median concentration (320 ng/L), was reduced to below the limit of detection after ZVI-sand filtration. Inorganic element (antimony, beryllium, cadmium, chromium, iron, lead, selenium and thallium) and water quality (free and total chlorine, nitrates, nitrites, pH and total dissolved solids) analyses showed that ZVI-sand filtered reclaimed water quality (nitrate, salinity, and inorganic elements) met the recommended guidelines for agricultural irrigation with reclaimed water. Based on our initial results, ZVI-sand filtration may be a promising basis for a point-of-use filtration system for reclaimed water irrigation on small-scale farms.
Collapse
Affiliation(s)
- Prachi Kulkarni
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, 4200 Valley Drive, College Park, MD 20742, USA
| | - Greg A Raspanti
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, 4200 Valley Drive, College Park, MD 20742, USA
| | - Anthony Q Bui
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, 4200 Valley Drive, College Park, MD 20742, USA
| | - Rhodel N Bradshaw
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, 4200 Valley Drive, College Park, MD 20742, USA
| | - Kalmia E Kniel
- Department of Animal and Food Sciences, University of Delaware, 531 S College Ave, Newark, DE 19716, USA
| | - Pei C Chiu
- Department of Civil and Environmental Engineering, University of Delaware, 127 The Green, Newark, DE 19716, USA
| | - Manan Sharma
- United States Department of Agriculture, Agricultural Research Service, Environmental and Microbial Food Safety Laboratory, 10300 Baltimore Avenue, BARC-East, Bldg. 201, Beltsville, MD 20705, USA
| | - Amir Sapkota
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, 4200 Valley Drive, College Park, MD 20742, USA
| | - Amy R Sapkota
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, 4200 Valley Drive, College Park, MD 20742, USA.
| |
Collapse
|
24
|
Chopyk J, Kulkarni P, Nasko DJ, Bradshaw R, Kniel KE, Chiu P, Sharma M, Sapkota AR. Zero-valent iron sand filtration reduces concentrations of virus-like particles and modifies virome community composition in reclaimed water used for agricultural irrigation. BMC Res Notes 2019; 12:223. [PMID: 30975220 PMCID: PMC6458639 DOI: 10.1186/s13104-019-4251-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [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: 09/19/2018] [Accepted: 04/03/2019] [Indexed: 01/21/2023] Open
Abstract
OBJECTIVE Zero-valent iron sand filtration can remove multiple contaminants, including some types of pathogenic bacteria, from contaminated water. However, its efficacy at removing complex viral populations, such as those found in reclaimed water used for agricultural irrigation, has not been fully evaluated. Therefore, this study utilized metagenomic sequencing and epifluorescent microscopy to enumerate and characterize viral populations found in reclaimed water and zero-valent iron-sand filtered reclaimed water sampled three times during a larger greenhouse study. RESULTS Zero-valent iron-sand filtered reclaimed water samples had significantly less virus-like particles than reclaimed water samples at all collection dates, with the reclaimed water averaging between 108 and 109 and the zero-valent iron-sand filtered reclaimed water averaging between 106 and 107 virus-like particles per mL. In addition, for both sample types, viral metagenomes (viromes) were dominated by bacteriophages of the order Caudovirales, largely Siphoviridae, and genes related to DNA metabolism. However, the proportion of sequences homologous to bacteria, as well as the abundance of genes possibly originating from a bacterial host, was higher in the viromes of zero-valent iron-sand filtered reclaimed water samples. Overall, zero-valent iron-sand filtered reclaimed water had a lower total concentration of virus-like particles and a different virome community composition compared to unfiltered reclaimed water.
Collapse
Affiliation(s)
- Jessica Chopyk
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, School of Public Health Building (255), 4200 Valley Drive, Room 2234P, College Park, MD, 20742, USA
| | - Prachi Kulkarni
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, School of Public Health Building (255), 4200 Valley Drive, Room 2234P, College Park, MD, 20742, USA
| | - Daniel J Nasko
- Center for Bioinformatics and Computational Biology, University of Maryland, College Park, MD, USA
| | - Rhodel Bradshaw
- United States Department of Agriculture, Agricultural Research Service, Environmental and Microbial Food Safety Laboratory, Beltsville, MD, 20705, USA
| | - Kalmia E Kniel
- Department of Animal and Food Sciences, University of Delaware, Newark, DE, 19716, USA
| | - Pei Chiu
- Department of Civil and Environmental Engineering, University of Delaware, Newark, DE, 19716, USA
| | - Manan Sharma
- United States Department of Agriculture, Agricultural Research Service, Environmental and Microbial Food Safety Laboratory, Beltsville, MD, 20705, USA
| | - Amy R Sapkota
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, School of Public Health Building (255), 4200 Valley Drive, Room 2234P, College Park, MD, 20742, USA.
| |
Collapse
|
25
|
Chattopadhyay S, Smyth EM, Kulkarni P, Babik KR, Reid M, Hittle LE, Clark PI, Mongodin EF, Sapkota AR. Little cigars and cigarillos harbor diverse bacterial communities that differ between the tobacco and the wrapper. PLoS One 2019; 14:e0211705. [PMID: 30794551 PMCID: PMC6386278 DOI: 10.1371/journal.pone.0211705] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 01/18/2019] [Indexed: 11/18/2022] Open
Abstract
Despite their potential importance with regard to infectious and chronic diseases among tobacco users, microbial constituents of tobacco products lack characterization. Specifically, to our knowledge, there are no data describing the bacterial diversity of little cigars or cigarillos. To address this knowledge gap, we tested four brands of little cigars and cigarillos. Tobacco and wrapper subsamples (n = 132) were separately subjected to DNA extraction, followed by PCR amplification of the V3V4 hypervariable region of the 16S rRNA gene, and sequencing using Illumina HiSeq. Sequences were analyzed using QIIME and Phyloseq implemented in R. We identified 2,681 operational taxonomic units across all products. Significant differences in alpha and beta diversity were observed between Swisher Sweets and Cheyenne products. Alpha and beta diversity was also significantly different between tobacco and wrapper subsamples within the same product. Beta diversity analyses of only tobacco samples identified no significant differences in the bacterial microbiota of different lots of the same products; however, the microbiota in the wrapper differed significantly across lots for all brands. Overall, Firmicutes were found to dominate in the wrapper, whereas Proteobacteria were most abundant in the tobacco. At the genus level, Bacillus and Lactobacillus dominated in the wrappers, and Staphylococcus and Pseudomonas dominated in the tobacco. Our findings suggest that the bacterial microbiota of little cigars and cigarillos is diverse and differs significantly between the tobacco and the wrapper, and across brands. Future work is necessary to evaluate the potential public health implications of these findings.
Collapse
Affiliation(s)
- Suhana Chattopadhyay
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, Maryland, United States of America
| | - Eoghan M. Smyth
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, Maryland, United States of America
- Institute for Genome Sciences and Department of Microbiology and Immunology, University of Maryland, School of Medicine, Baltimore, Maryland, United States of America
| | - Prachi Kulkarni
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, Maryland, United States of America
| | - Kelsey R. Babik
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, Maryland, United States of America
| | - Molly Reid
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, Maryland, United States of America
| | - Lauren E. Hittle
- Institute for Genome Sciences and Department of Microbiology and Immunology, University of Maryland, School of Medicine, Baltimore, Maryland, United States of America
| | - Pamela I. Clark
- Department of Behavioral and Community Health, University of Maryland, School of Public Health, College Park, Maryland, United States of America
| | - Emmanuel F. Mongodin
- Institute for Genome Sciences and Department of Microbiology and Immunology, University of Maryland, School of Medicine, Baltimore, Maryland, United States of America
| | - Amy R. Sapkota
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, Maryland, United States of America
| |
Collapse
|
26
|
Kulkarni P, Olson ND, Paulson JN, Pop M, Maddox C, Claye E, Rosenberg Goldstein RE, Sharma M, Gibbs SG, Mongodin EF, Sapkota AR. Conventional wastewater treatment and reuse site practices modify bacterial community structure but do not eliminate some opportunistic pathogens in reclaimed water. Sci Total Environ 2018; 639:1126-1137. [PMID: 29929281 PMCID: PMC8290890 DOI: 10.1016/j.scitotenv.2018.05.178] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 05/14/2018] [Accepted: 05/14/2018] [Indexed: 05/04/2023]
Abstract
Water recycling continues to expand across the United States, from areas that have access to advanced, potable-level treated reclaimed water, to those having access only to reclaimed water treated at conventional municipal wastewater treatment plants. This expansion makes it important to further characterize the microbial quality of these conventionally-treated water sources. Therefore, we used 16S rRNA gene sequencing to characterize total bacterial communities present in differentially-treated wastewater and reclaimed water (n = 67 samples) from four U.S. wastewater treatment plants and one associated spray irrigation site conducting on-site ultraviolet treatment and open-air storage. The number of observed operational taxonomic units was significantly lower (p < 0.01) in effluent, compared to influent, after conventional treatment. Effluent community structure was influenced more by treatment method than by influent community structure. The abundance of Legionella spp. increased as treatment progressed in one treatment plant that performed chlorination and in another that seasonally chlorinated. Overall, the alpha-diversity of bacterial communities in reclaimed water decreased (p < 0.01) during wastewater treatment and spray irrigation site ultraviolet treatment (p < 0.01), but increased (p < 0.01) after open-air storage at the spray irrigation site. The abundance of Legionella spp. was higher at the sprinkler system pumphouse at the spray irrigation site than in the influent from the treatment plant supplying the site. Legionella pneumophila was detected in conventionally treated effluent samples and in samples collected after ultraviolet treatment at the spray irrigation site, while Legionella feeleii persisted throughout on-site treatment at the spray irrigation site, and, along with Mycobacterium gordonae, was also detected at the sprinkler system pumphouse at the spray irrigation site. These data could inform the development of future treatment technologies and reuse guidelines that address a broader assemblage of the bacterial community of reclaimed water, resulting in reuse practices that may be more protective of public health.
Collapse
Affiliation(s)
- Prachi Kulkarni
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health 4200 Valley Drive, College Park, MD 20742, United States
| | - Nathan D Olson
- University of Maryland Institute for Advanced Computer Studies, 8223 Paint Branch Drive, College Park, MD 20740, United States; National Institute of Standards and Technology, Biosystems and Biomaterials Division, 100 Bureau Drive, Gaithersburg, MD 20899, United States
| | - Joseph N Paulson
- Genentech, Department of Biostatistics, Product Development, 1 DNA Way, South San Francisco, CA 94080-4990, United States
| | - Mihai Pop
- University of Maryland Institute for Advanced Computer Studies, 8223 Paint Branch Drive, College Park, MD 20740, United States
| | - Cynthia Maddox
- Institute for Genome Sciences, University of Maryland School of Medicine 801 West Baltimore St., BioPark II, 6th floor, Baltimore, MD 21201, United States
| | - Emma Claye
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health 4200 Valley Drive, College Park, MD 20742, United States
| | - Rachel E Rosenberg Goldstein
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health 4200 Valley Drive, College Park, MD 20742, United States
| | - Manan Sharma
- USDA, Agricultural Research Service, Environmental and Microbial Food Safety Laboratory, 10300 Baltimore Avenue, BARC-East, Bldg. 201, Beltsville, MD 20705-2350, United States
| | - Shawn G Gibbs
- Indiana University Bloomington, School of Public Health 1025 E. 7th St, Bloomington, IN 47405, United States
| | - Emmanuel F Mongodin
- Institute for Genome Sciences, University of Maryland School of Medicine 801 West Baltimore St., BioPark II, 6th floor, Baltimore, MD 21201, United States
| | - Amy R Sapkota
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health 4200 Valley Drive, College Park, MD 20742, United States.
| |
Collapse
|
27
|
Kulkarni P, Biswas P, Sikander S, Dehghani H, Burt J, Song S. 3:00 PM Abstract No. 211 Design of an MRI-guided robotic prostate intervention. J Vasc Interv Radiol 2018. [DOI: 10.1016/j.jvir.2018.01.237] [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: 12/01/2022] Open
|
28
|
Zheng L, Kulkarni P, Dionysiou DD. Calibration Approaches for Measurement of Aerosol Multielemental Concentration using Spark Emission Spectroscopy. J Anal At Spectrom 2018; 33:404-412. [PMID: 35673324 PMCID: PMC9170181 DOI: 10.1039/c7ja00252a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A multivariate calibration approach, using partial least squares regression, has been developed for measurement of aerosol elemental concentration. A training set consisting of 25 orthogonal aerosol samples with 9 factors (elements: Cr, Mn, Fe, Ni, Cu, Zn, Cd, Pb, Ti) and 5 levels (elemental concentrations) was designed. Spectral information was obtained for each aerosol sample using aerosol spark emission spectroscopy (ASES) at a time resolution of 1 minute. Simultaneous filter samples were collected for determination of elemental concentration using an inductively coupled plasma mass spectrometry (ICP-MS) analysis. Two regression models, PLS1 and PLS2, were developed to predict mass concentration from spectral measurements. Prediction ability of the models improved substantially when only signature wavelengths were included instead of the entire spectrum. The PLS1 model with 45 selected spectral variables (PLS1-45 model) presented the lowest relative root mean square error of cross validation (RMSECV; 16 - 35%). The detection limits using the PLS1-45 model, for the nine elements were in the range of 0.16 - 0.50 μg/m3. The performance of both multivariate and univariate regression models were tested for an unknown sample of welding fume aerosol. The multivariate model did not provide significantly better prediction compared to the univariate model. In spite of the difference in matrices of calibration aerosol and the unknown test aerosol, the results from PLS model show good agreement with those from filter measurements. The relative root mean square error of prediction (RMSEP) obtained from PLS1-45 model was 13% for Cr, 23% for Fe, 22% for Mn and 12% for Ni. The study shows that in spite of lower spectral resolution and lack of sample preparation, reliable and robust measurements can be obtained using the proposed calibration method based on PLS regression.
Collapse
Affiliation(s)
- L. Zheng
- Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Cincinnati, OH 45226, USA
- Environmental Engineering and Science Program, Department of Biomedical, Chemical, and Environmental Engineering, University of Cincinnati, OH, 45221, USA
| | - P. Kulkarni
- Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Cincinnati, OH 45226, USA
| | - D. D. Dionysiou
- Environmental Engineering and Science Program, Department of Biomedical, Chemical, and Environmental Engineering, University of Cincinnati, OH, 45221, USA
| |
Collapse
|
29
|
Kulkarni P, Olson ND, Raspanti GA, Rosenberg Goldstein RE, Gibbs SG, Sapkota A, Sapkota AR. Antibiotic Concentrations Decrease during Wastewater Treatment but Persist at Low Levels in Reclaimed Water. Int J Environ Res Public Health 2017. [PMID: 28635638 PMCID: PMC5486354 DOI: 10.3390/ijerph14060668] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Reclaimed water has emerged as a potential irrigation solution to freshwater shortages. However, limited data exist on the persistence of antibiotics in reclaimed water used for irrigation. Therefore, we examined the fate of nine commonly-used antibiotics (ampicillin, azithromycin, ciprofloxacin, linezolid, oxacillin, oxolinic acid, penicillin G, pipemidic acid, and tetracycline) in differentially treated wastewater and reclaimed water from two U.S. regions. We collected 72 samples from two Mid-Atlantic and two Midwest treatment plants, as well as one Mid-Atlantic spray irrigation site. Antibiotic concentrations were measured using liquid-chromatography- tandem mass spectrometry. Data were analyzed using Mann-Whitney-Wilcoxon tests and Kruskal Wallis tests. Overall, antibiotic concentrations in effluent samples were lower than that of influent samples. Mid-Atlantic plants had similar influent but lower effluent antibiotic concentrations compared to Midwest plants. Azithromycin was detected at the highest concentrations (of all antibiotics) in influent and effluent samples from both regions. For most antibiotics, transport from the treatment plant to the irrigation site resulted in no changes in antibiotic concentrations, and UV treatment at the irrigation site had no effect on antibiotic concentrations in reclaimed water. Our findings show that low-level antibiotic concentrations persist in reclaimed water used for irrigation; however, the public health implications are unclear at this time.
Collapse
Affiliation(s)
- Prachi Kulkarni
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, 4200 Valley Drive, College Park, MD 20742, USA.
| | - Nathan D Olson
- University of Maryland Institute for Advanced Computer Studies, A.V. Williams Building, College Park, MD 20742, USA.
- National Institute of Standards and Technology, Biosystems and Biomaterials Division, 100 Bureau Drive, Gaithersburg, MD 20899, USA.
| | - Greg A Raspanti
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, 4200 Valley Drive, College Park, MD 20742, USA.
| | - Rachel E Rosenberg Goldstein
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, 4200 Valley Drive, College Park, MD 20742, USA.
| | - Shawn G Gibbs
- School of Public Health-Bloomington, Indiana University Bloomington, 1025 E. 7th St., Bloomington, IN 47405, USA.
| | - Amir Sapkota
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, 4200 Valley Drive, College Park, MD 20742, USA.
| | - Amy R Sapkota
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, 4200 Valley Drive, College Park, MD 20742, USA.
| |
Collapse
|
30
|
Smyth EM, Kulkarni P, Claye E, Stanfill S, Tyx R, Maddox C, Mongodin EF, Sapkota AR. Smokeless tobacco products harbor diverse bacterial microbiota that differ across products and brands. Appl Microbiol Biotechnol 2017; 101:5391-5403. [PMID: 28432442 DOI: 10.1007/s00253-017-8282-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Revised: 03/10/2017] [Accepted: 03/31/2017] [Indexed: 12/22/2022]
Abstract
Smokeless tobacco products contain numerous chemical compounds, including known human carcinogens. Other smokeless tobacco constituents, including bacteria, may also contribute to adverse health effects among smokeless tobacco users. However, there is a lack of data regarding the microbial constituents of smokeless tobacco. Our goal was to characterize the bacterial microbiota of different smokeless tobacco products and evaluate differences across product types and brands. DNA was extracted from 15 brands of smokeless tobacco products (including dry snuff, moist snuff, snus, and Swedish snus) and 6 handmade products (e.g., toombak) using an enzymatic and mechanical lysis approach. Bacterial community profiling was performed using PCR amplification of the V1-V2 hypervariable region of the 16S rRNA gene, followed by 454 pyrosequencing of the resulting amplicons and sequence analysis using the QIIME package. Total viable counts were also determined to estimate the number of viable bacteria present in each product. Average total viable counts ranged from 0 to 9.35 × 107 CFU g-1. Analysis of the 16S rRNA gene sequences revealed high bacterial diversity across the majority of products tested: dry snuff products where characterized by the highest diversity indices compared to other products. The most dominant bacterial phyla across all products were Firmicutes, Proteobacteria, Actinobacteria, and Bacteroidetes. Significant differences in both bacterial community composition and in silico predicted gene content were observed between smokeless tobacco product types and between brands of specific smokeless tobacco products. These data are useful in order to comprehensively address potential health risks associated with the use of smokeless tobacco products.
Collapse
Affiliation(s)
- Eoghan M Smyth
- Institute for Genome Sciences, University of Maryland School of Medicine, 801 West Baltimore St., Baltimore, MD, 21201, USA
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, 4200 Valley Drive, Bldg no. 255, Room 2234P, College Park, MD, 20742, USA
| | - Prachi Kulkarni
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, 4200 Valley Drive, Bldg no. 255, Room 2234P, College Park, MD, 20742, USA
| | - Emma Claye
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, 4200 Valley Drive, Bldg no. 255, Room 2234P, College Park, MD, 20742, USA
| | - Stephen Stanfill
- Division of Laboratory Sciences, Centers for Disease Control and Prevention, 1600 Clifton Road, Atlanta, GA, 30329, USA
| | - Robert Tyx
- Division of Laboratory Sciences, Centers for Disease Control and Prevention, 1600 Clifton Road, Atlanta, GA, 30329, USA
| | - Cynthia Maddox
- Institute for Genome Sciences, University of Maryland School of Medicine, 801 West Baltimore St., Baltimore, MD, 21201, USA
| | - Emmanuel F Mongodin
- Institute for Genome Sciences, University of Maryland School of Medicine, 801 West Baltimore St., Baltimore, MD, 21201, USA
| | - Amy R Sapkota
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, 4200 Valley Drive, Bldg no. 255, Room 2234P, College Park, MD, 20742, USA.
| |
Collapse
|
31
|
Chopyk J, Chattopadhyay S, Kulkarni P, Smyth EM, Hittle LE, Paulson JN, Pop M, Buehler SS, Clark PI, Mongodin EF, Sapkota AR. Temporal Variations in Cigarette Tobacco Bacterial Community Composition and Tobacco-Specific Nitrosamine Content Are Influenced by Brand and Storage Conditions. Front Microbiol 2017; 8:358. [PMID: 28326071 PMCID: PMC5339245 DOI: 10.3389/fmicb.2017.00358] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [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: 11/11/2016] [Accepted: 02/21/2017] [Indexed: 12/26/2022] Open
Abstract
Tobacco products, specifically cigarettes, are home to microbial ecosystems that may play an important role in the generation of carcinogenic tobacco-specific nitrosamines (TSNAs), as well as the onset of multiple adverse human health effects associated with the use of these products. Therefore, we conducted time-series experiments with five commercially available brands of cigarettes that were either commercially mentholated, custom-mentholated, user-mentholated, or non-mentholated. To mimic user storage conditions, the cigarettes were incubated for 14 days under three different temperatures and relative humidities (i.e., pocket, refrigerator, and room). Overall, 360 samples were collected over the course of 2 weeks and total DNA was extracted, PCR amplified for the V3V4 hypervariable region of the 16S rRNA gene and sequenced using Illumina MiSeq. A subset of samples (n = 32) was also analyzed via liquid chromatography with tandem mass spectrometry for two TSNAs: N'-nitrosonornicotine (NNN) and 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK). Comparative analyses of the five tobacco brands revealed bacterial communities dominated by Pseudomonas, Pantoea, and Bacillus, with Pseudomonas relatively stable in abundance regardless of storage condition. In addition, core bacterial operational taxonomic units (OTUs) were identified in all samples and included Bacillus pumilus, Rhizobium sp., Sphingomonas sp., unknown Enterobacteriaceae, Pantoea sp., Pseudomonas sp., Pseudomonas oryzihabitans, and P. putida. Additional OTUs were identified that significantly changed in relative abundance between day 0 and day 14, influenced by brand and storage condition. In addition, small but statistically significant increases in NNN levels were observed in user- and commercially mentholated brands between day 0 and day 14 at pocket conditions. These data suggest that manufacturing and user manipulations, such as mentholation and storage conditions, may directly impact the microbiome of cigarette tobacco as well as the levels of carcinogens.
Collapse
Affiliation(s)
- Jessica Chopyk
- Maryland Institute for Applied Environmental Health, School of Public Health, University of Maryland College Park, MD, USA
| | - Suhana Chattopadhyay
- Maryland Institute for Applied Environmental Health, School of Public Health, University of Maryland College Park, MD, USA
| | - Prachi Kulkarni
- Maryland Institute for Applied Environmental Health, School of Public Health, University of Maryland College Park, MD, USA
| | - Eoghan M Smyth
- Maryland Institute for Applied Environmental Health, School of Public Health, University of MarylandCollege Park, MD, USA; Institute for Genome Sciences and Department of Microbiology and Immunology, School of Medicine, University of MarylandBaltimore, MD, USA
| | - Lauren E Hittle
- Institute for Genome Sciences and Department of Microbiology and Immunology, School of Medicine, University of Maryland Baltimore, MD, USA
| | - Joseph N Paulson
- Department of Biostatistics and Computational Biology, Dana-Farber Cancer InstituteBoston, MA, USA; Department of Biostatistics, Harvard T.H. Chan School of Public HealthBoston, MA, USA
| | - Mihai Pop
- Center for Bioinformatics and Computational Biology, University of Maryland College Park, MD, USA
| | | | - Pamela I Clark
- Department of Behavioral and Community Health, School of Public Health, University of Maryland College Park, MD, USA
| | - Emmanuel F Mongodin
- Institute for Genome Sciences and Department of Microbiology and Immunology, School of Medicine, University of Maryland Baltimore, MD, USA
| | - Amy R Sapkota
- Maryland Institute for Applied Environmental Health, School of Public Health, University of Maryland College Park, MD, USA
| |
Collapse
|
32
|
Chopyk J, Chattopadhyay S, Kulkarni P, Claye E, Babik KR, Reid MC, Smyth EM, Hittle LE, Paulson JN, Cruz-Cano R, Pop M, Buehler SS, Clark PI, Sapkota AR, Mongodin EF. Mentholation affects the cigarette microbiota by selecting for bacteria resistant to harsh environmental conditions and selecting against potential bacterial pathogens. Microbiome 2017; 5:22. [PMID: 28202080 PMCID: PMC5312438 DOI: 10.1186/s40168-017-0235-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Accepted: 01/24/2017] [Indexed: 05/23/2023]
Abstract
BACKGROUND There is a paucity of data regarding the microbial constituents of tobacco products and their impacts on public health. Moreover, there has been no comparative characterization performed on the bacterial microbiota associated with the addition of menthol, an additive that has been used by tobacco manufacturers for nearly a century. To address this knowledge gap, we conducted bacterial community profiling on tobacco from user- and custom-mentholated/non-mentholated cigarette pairs, as well as a commercially-mentholated product. Total genomic DNA was extracted using a multi-step enzymatic and mechanical lysis protocol followed by PCR amplification of the V3-V4 hypervariable regions of the 16S rRNA gene from five cigarette products (18 cigarettes per product for a total of 90 samples): Camel Crush, user-mentholated Camel Crush, Camel Kings, custom-mentholated Camel Kings, and Newport Menthols. Sequencing was performed on the Illumina MiSeq platform and sequences were processed using the Quantitative Insights Into Microbial Ecology (QIIME) software package. RESULTS In all products, Pseudomonas was the most abundant genera and included Pseudomonas oryzihabitans and Pseudomonas putida, regardless of mentholation status. However, further comparative analysis of the five products revealed significant differences in the bacterial compositions across products. Bacterial community richness was higher among non-mentholated products compared to those that were mentholated, particularly those that were custom-mentholated. In addition, mentholation appeared to be correlated with a reduction in potential human bacterial pathogens and an increase in bacterial species resistant to harsh environmental conditions. CONCLUSIONS Taken together, these data provide preliminary evidence that the mentholation of commercially available cigarettes can impact the bacterial community of these products.
Collapse
Affiliation(s)
- Jessica Chopyk
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, MD USA
| | - Suhana Chattopadhyay
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, MD USA
| | - Prachi Kulkarni
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, MD USA
| | - Emma Claye
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, MD USA
| | - Kelsey R. Babik
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, MD USA
| | - Molly C. Reid
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, MD USA
| | - Eoghan M. Smyth
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, MD USA
- School of Medicine, Institute for Genome Sciences and Department of Microbiology and Immunology, University of Maryland, 801 West Baltimore Street, Office #622, Baltimore, MD 21201 USA
| | - Lauren E. Hittle
- School of Medicine, Institute for Genome Sciences and Department of Microbiology and Immunology, University of Maryland, 801 West Baltimore Street, Office #622, Baltimore, MD 21201 USA
| | - Joseph N. Paulson
- Center for Bioinformatics and Computational Biology, University of Maryland, College Park, MD USA
| | - Raul Cruz-Cano
- Department of Epidemiology and Biostatistics, University of Maryland School of Public Health, College Park, MD USA
| | - Mihai Pop
- Center for Bioinformatics and Computational Biology, University of Maryland, College Park, MD USA
| | | | - Pamela I. Clark
- Department of Behavioral and Community Health, University of Maryland School of Public Health, College Park, MD USA
| | - Amy R. Sapkota
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, MD USA
| | - Emmanuel F. Mongodin
- School of Medicine, Institute for Genome Sciences and Department of Microbiology and Immunology, University of Maryland, 801 West Baltimore Street, Office #622, Baltimore, MD 21201 USA
| |
Collapse
|
33
|
Bharambe V, Arole V, Vatsalaswamy P, Kulkarni P, Kulkarni P. Knowledge and attitude towards body and organ donation among people in Lanja – A rural town in India. J ANAT SOC INDIA 2016. [DOI: 10.1016/j.jasi.2016.08.029] [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]
|
34
|
Yee JR, Kenkel WM, Kulkarni P, Moore K, Perkeybile AM, Toddes S, Amacker JA, Carter CS, Ferris CF. BOLD fMRI in awake prairie voles: A platform for translational social and affective neuroscience. Neuroimage 2016; 138:221-232. [PMID: 27238726 DOI: 10.1016/j.neuroimage.2016.05.046] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 05/14/2016] [Accepted: 05/17/2016] [Indexed: 01/03/2023] Open
Abstract
The advancement of neuroscience depends on continued improvement in methods and models. Here, we present novel techniques for the use of awake functional magnetic resonance imaging (fMRI) in the prairie vole (Microtus ochrogaster) - an important step forward in minimally-invasive measurement of neural activity in a non-traditional animal model. Imaging neural responses in prairie voles, a species studied for its propensity to form strong and selective social bonds, is expected to greatly advance our mechanistic understanding of complex social and affective processes. The use of ultra-high-field fMRI allows for recording changes in region-specific activity throughout the entire brain simultaneously and with high temporal and spatial resolutions. By imaging neural responses in awake animals, with minimal invasiveness, we are able to avoid the confound of anesthesia, broaden the scope of possible stimuli, and potentially make use of repeated scans from the same animals. These methods are made possible by the development of an annotated and segmented 3D vole brain atlas and software for image analysis. The use of these methods in the prairie vole provides an opportunity to broaden neuroscientific investigation of behavior via a comparative approach, which highlights the ethological relevance of pro-social behaviors shared between voles and humans, such as communal breeding, selective social bonds, social buffering of stress, and caregiving behaviors. Results using these methods show that fMRI in the prairie vole is capable of yielding robust blood oxygen level dependent (BOLD) signal changes in response to hypercapnic challenge (inhaled 5% CO2), region-specific physical challenge (unilateral whisker stimulation), and presentation of a set of novel odors. Complementary analyses of repeated restraint sessions in the imaging hardware suggest that voles do not require acclimation to this procedure. Taken together, awake vole fMRI represents a new arena of neurobiological study outside the realm of traditional rodent models.
Collapse
Affiliation(s)
- J R Yee
- Dept. of Psychology, Northeastern University, United States; Kinsey Institute, Indiana University, United States.
| | - W M Kenkel
- Dept. of Psychology, Northeastern University, United States; Kinsey Institute, Indiana University, United States
| | - P Kulkarni
- Dept. of Psychology, Northeastern University, United States
| | - K Moore
- Dept. of Psychology, Northeastern University, United States
| | - A M Perkeybile
- Dept. of Psychology, Northeastern University, United States
| | - S Toddes
- Dept. of Psychology, Northeastern University, United States
| | - J A Amacker
- Dept. of Psychology, Northeastern University, United States
| | - C S Carter
- Kinsey Institute, Indiana University, United States
| | - C F Ferris
- Dept. of Psychology, Northeastern University, United States
| |
Collapse
|
35
|
Kulkarni P, Slavine N, Chiguru S, Alhasan M, Ramezani S, Hao G, Sun X, Bonte F. Improved quantitative accuracy of PET/CT imaging of plaque deposition in transgenic mice with F-18 quinoline for early diagnosis of AD. J Neurol Sci 2015. [DOI: 10.1016/j.jns.2015.08.243] [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: 10/22/2022]
|
36
|
Kulkarni P, Kudale A, Arasu K, Lab M, Darby W, Rangan S. Tuberculosis knowledge and awareness in tribal-dominant districts of Jharkhand, India: implications for ACSM. Public Health Action 2015; 4:189-94. [PMID: 26400809 DOI: 10.5588/pha.14.0036] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [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: 04/12/2014] [Accepted: 06/27/2014] [Indexed: 11/10/2022] Open
Abstract
SETTING Forty hard-to-reach villages in the East and West Singhbhum Districts of Jharkhand State, India. OBJECTIVES To document knowledge and awareness of tuberculosis (TB) among the general population, understand gender differences and inform intervention activities for the improvement of TB control programmes in tribal-dominant hard-to-reach areas in India. DESIGN A cross-sectional community-based survey was carried out among 825 respondents using population proportionate sampling. RESULTS Most of the respondents were in the 18-35 years age group, tribal and married; 44% were illiterate. The study shows poor knowledge about TB symptoms, causes, modes of transmission and moderate awareness about government TB services. Correct knowledge about the cause of TB was negligible: half of the respondents reported local liquor as the cause, 61% considered TB as transmissible and one third considered sharing of food as the mode of transmission. Awareness about the availability of free treatment services at government health facilities was high, but awareness about DOTS was low. Significant gender differences were observed in knowledge and awareness levels. CONCLUSION Study findings point to the importance of urgent intensification of culturally congruent and gender-sensitive advocacy, communication and social mobilisation activities.
Collapse
Affiliation(s)
- P Kulkarni
- The Maharashtra Association of Anthropological Sciences-Centre for Health Research and Development, Pune, India
| | - A Kudale
- The Maharashtra Association of Anthropological Sciences-Centre for Health Research and Development, Pune, India
| | - K Arasu
- Alternative for India Development, India, Jamshedpur, India
| | - M Lab
- Target Tuberculosis, Brighton, United Kingdom
| | - W Darby
- Target Tuberculosis, Brighton, United Kingdom
| | - S Rangan
- The Maharashtra Association of Anthropological Sciences-Centre for Health Research and Development, Pune, India
| |
Collapse
|
37
|
Kulkarni P, Koppikar S, Mahajan A, Deshpande S, Harsulkar A. AB1005 Glycosaminoglycan in Synovial Fluid of Osteoarthritis Patients Validates Kellgren-Lawrence Score as a Useful Indicator for Disease Progression and Cartilage Degradation. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.5154] [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: 11/04/2022]
|
38
|
LaHaye NL, Harilal SS, Diwakar PK, Hassanein A, Kulkarni P. The effect of ultrafast laser wavelength on ablation properties and implications on sample introduction in inductively coupled plasma mass spectrometry. J Appl Phys 2013; 114:023103. [PMID: 26640294 PMCID: PMC4668957 DOI: 10.1063/1.4812491] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We investigated the role of femtosecond (fs) laser wavelength on laser ablation (LA) and its relation to laser generated aerosol counts and particle distribution, inductively coupled plasma-mass spectrometry (ICP-MS) signal intensity, detection limits, and elemental fractionation. Four different NIST standard reference materials (610, 613, 615, and 616) were ablated using 400 nm and 800 nm fs laser pulses to study the effect of wavelength on laser ablation rate, accuracy, precision, and fractionation. Our results show that the detection limits are lower for 400 nm laser excitation than 800 nm laser excitation at lower laser energies but approximately equal at higher energies. Ablation threshold was also found to be lower for 400 nm than 800 nm laser excitation. Particle size distributions are very similar for 400 nm and 800 nm wavelengths; however, they differ significantly in counts at similar laser fluence levels. This study concludes that 400 nm LA is more beneficial for sample introduction in ICP-MS, particularly when lower laser energies are to be used for ablation.
Collapse
Affiliation(s)
- N L LaHaye
- Center for Materials under Extreme Environment, School of Nuclear Engineering Purdue University, West Lafayette, Indiana 47907, USA
| | - S S Harilal
- Center for Materials under Extreme Environment, School of Nuclear Engineering Purdue University, West Lafayette, Indiana 47907, USA
| | - P K Diwakar
- Center for Materials under Extreme Environment, School of Nuclear Engineering Purdue University, West Lafayette, Indiana 47907, USA
| | - A Hassanein
- Center for Materials under Extreme Environment, School of Nuclear Engineering Purdue University, West Lafayette, Indiana 47907, USA
| | - P Kulkarni
- Centers for Disease Control and Prevention, National Institute of Occupational Safety and Health, Cincinnati, Ohio 45213, USA
| |
Collapse
|
39
|
Affiliation(s)
| | | | - Anne D. Lucas
- U.S. Food and Drug Administration, Silver
Spring, Maryland
| |
Collapse
|
40
|
Kulkarni P, Shoff M, Lucas A. Comparison of test methods to screen for residual chemical contamination on medical device surfaces. Biomed Instrum Technol 2012; 46:388-94. [PMID: 23039741 DOI: 10.2345/0899-8205-46.5.388] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Reprocessing medical devices involves several steps including cleaning and disinfection or sterilization. Chemical residuals can occur at various stages of reprocessing. These residues could interfere with device function and potentially harm patients. These solutions are composed of a combination of various chemicals and their residues are highly diluted post rinsing, therefore, it is difficult to find a sensitive and rapid method to detect toxicity due to chemical residues. This study focused on (1) finding the levels of residues that are cytotoxic using two mammalian cell lines and Daphnia magna, and (2) evaluating two test methods, Total Organic Carbon (TOC) and the Luminescent Bacteria Test (LBT), to measure residual chemicals levels. The two mammalian cell lines were equal in their cytotoxicity responses. However, Daphnia were more sensitive to some chemical residue than the two mammalian cell lines. TOC and LBT were able to detect the presence of residue well below the levels that were determined to cause mammalian cytotoxicity. LBT was more sensitive for some chemicals and TOC for others, both in solution and in simulated cleaning and rinsing for the limited number of solutions tested in this study.
Collapse
Affiliation(s)
- Prachi Kulkarni
- U.S Food and Drug Administration, Center for Devices and Radiological Health, SIlver Spring, MD, USA
| | | | | |
Collapse
|
41
|
Affiliation(s)
- P Kulkarni
- Department of Pathology, Nizam's Institute of Medical Sciences, Punjagutta, Hyderabad, Andhra Pradesh, India
| | | | | | | | | |
Collapse
|
42
|
Kulkarni P, Uppin MS, Prayaga AK, Das U, Dakshinamurthy KV. Authors' reply. Indian J Nephrol 2012; 22:234-5. [PMID: 23087571 PMCID: PMC3459540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Affiliation(s)
- P. Kulkarni
- Department of Pathology, Nizam's Institute of Medical Sciences, Punjagutta, Hyderabad, Andhra Pradesh, India
| | - M. S. Uppin
- Department of Pathology, Nizam's Institute of Medical Sciences, Punjagutta, Hyderabad, Andhra Pradesh, India
| | - A. K. Prayaga
- Department of Pathology, Nizam's Institute of Medical Sciences, Punjagutta, Hyderabad, Andhra Pradesh, India,Address for correspondence: Dr. Aruna K. Prayaga, Department of Pathology, Nizam's Institute of Medical Sciences, Punjagutta, Hyderabad- 500 082, Andhra Pradesh, India. E-mail:
| | - U. Das
- Department of Nephrology, Nizam's Institute of Medical Sciences, Punjagutta, Hyderabad, Andhra Pradesh, India
| | - K. V. Dakshinamurthy
- Department of Nephrology, Nizam's Institute of Medical Sciences, Punjagutta, Hyderabad, Andhra Pradesh, India
| |
Collapse
|
43
|
Kulkarni P, Uppin MS, Prayaga AK, Das U, Dakshina Murthy KV. Renal allograft pathology with C4d immunostaining in patients with graft dysfunction. Indian J Nephrol 2011; 21:239-44. [PMID: 22022083 PMCID: PMC3193666 DOI: 10.4103/0971-4065.85481] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Renal allograft biopsy is the gold standard for diagnosis of rejection. Incorporation of C4d as a marker for humoral rejection is a major addition for Banff Schema, 2005. We evaluated the pattern of C4d staining in indicated renal allograft biopsies from January 2005 to December 2009. Of the 67 biopsies analyzed, 21 were C4d-positive. They were 11 cases of acute rejection, seven chronic rejection and one biopsy each of acute tubular necrosis, BK virus nephropathy and normal biopsy. Morphologic features like peritubular capillary dilatation, tubulitis and interstitial inflammation were seen more frequently in C4d-positive biopsies and this was statistically significant. C4d positivity was noted in 50% of the chronic rejection cases indicating a humoral component in the pathogenesis of chronic rejection. There was no significant difference in the serum creatinine levels of C4d-positive and -negative patients, either at the time of biopsy or during the follow-up. This study supports the role of C4d immunostaining in confirming histologically diagnosed acute and chronic humoral rejections and in detecting histologically unsuspected cases.
Collapse
Affiliation(s)
- P Kulkarni
- Department of Pathology, Nizam's Institute of Medical Sciences, Hyderabad, India
| | | | | | | | | |
Collapse
|
44
|
Kharkar V, Kotrashetti S, Kulkarni P. Comparative evaluation of dento-alveolar distraction and periodontal distraction assisted rapid retraction of the maxillary canine: a pilot study. Int J Oral Maxillofac Surg 2010; 39:1074-9. [DOI: 10.1016/j.ijom.2010.06.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2009] [Revised: 03/09/2010] [Accepted: 06/09/2010] [Indexed: 01/27/2023]
|
45
|
Reynoso F, Gultepe E, Jhaveri A, Kulkarni P, Gershman B, Ferris C, Campbell R, Harisinghani M, Sridhar S. TH-D-201C-08: Multi-Modal MRI SPECT and CT Imaging of Theranostic Nanoplatforms. Med Phys 2010. [DOI: 10.1118/1.3469556] [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: 11/07/2022] Open
|
46
|
Pascoli L, Napier NJ, Wray M, Mc Carron M, Mc Allister C, Rooney ME, Gibson DS, Pascoli L, McAlilister C, Scaife C, Dunn M, Pennington S, Rooney M, Pascoli L, Wright S, Mc Allister C, Rooney ME, Hinks A, Martin P, Flynn E, Eyre S, Packham J, Barton A, Worthington J, Thomson W, McErlane F, Kulkarni P, Nicholl K, Foster HE, Pain C, Baildam E, Foster H, Harrison M, Symmonds D, Hinks A, Martin P, Flynn E, Eyre S, Packham J, Barton A, Worthington J, Thomson W, Hinks A, Martin P, Flynn E, Eyre S, Packham J, Barton A, Worthington J, Thomson W. Paediatric and Adolescent Rheumatology [143-150]: 143. Knee Joint in JIA: A Prospective Evaluation of Clinical Examination, Ultrasound and Mri Assessment. A Newly Developed Knee MRI Scoring System in JIA. Rheumatology (Oxford) 2010. [DOI: 10.1093/rheumatology/keq724] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
47
|
Joshi CV, Ghormade V, Kunde P, Kulkarni P, Mamgain H, Bhat S, Paknikar KM, Deshpande MV. Flocculation of dimorphic yeast Benjaminiella poitrasii is altered by modulation of NAD-glutamate dehydrogenase. Bioresour Technol 2010; 101:1393-1395. [PMID: 19833508 DOI: 10.1016/j.biortech.2009.09.052] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2009] [Revised: 09/14/2009] [Accepted: 09/16/2009] [Indexed: 05/28/2023]
Abstract
A strategy to control flocculation is investigated using dimorphic yeast, Benjaminiella poitrasii as a model. Parent form of this yeast (Y) exhibited faster flocculation (11.1 min) than the monomorphic yeast form mutant Y-5 (12.6 min). Atomic force microscopy revealed higher surface roughness of Y (439.34 rms) than Y-5 (52 rms). Also, the former had a zeta potential of -65.97+/-3.45 as against -50.21+/-2.49 for the latter. Flocculation of both Y and Y-5 could be altered by supplementing either substrates or inhibitor of NAD-glutamate dehydrogenase (NAD-GDH) in the growth media. The rate of flocculation was promoted by alpha-ketoglutarate or isophthalic acid and decelerated by glutamate with a statistically significant inverse correlation to corresponding NAD-GDH levels. These interesting findings open up new possibilities of using NAD-GDH modulating agents to control flocculation in fermentations for easier downstream processing.
Collapse
Affiliation(s)
- C V Joshi
- Biochemical Sciences Division, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
| | | | | | | | | | | | | | | |
Collapse
|
48
|
Lal S, Kulkarni P, Singh A. Parametric Decomposition of Sample Space for Classification. Journal of Intelligent Systems 2010. [DOI: 10.1515/jisys.2010.19.2.163] [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: 11/15/2022] Open
|
49
|
Lim Y, Kulkarni P, Shaw R, Tay E. P1054 Case report on chylous ascites in recurrent gynaecological malignancies. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)62540-6] [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: 11/15/2022]
|
50
|
Inoue T, Maeno A, Kulkarni P, Zeng Y, Yeater D, Leman E, Ogawa O, Getzenberg R. POD-04.01: Purine-Rich Element Binding Protein Alpha Induces Cell Stress and Differentiation Pathways in Prostate Cancer Cells. Urology 2009. [DOI: 10.1016/j.urology.2009.07.1177] [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]
|