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Crawford MS, Ulu A, Ramirez BM, Santos AN, Chatterjee P, Canale V, Manz S, Lei H, Nordgren TM, McCole DF. Respiratory exposure to agricultural dust extract promotes increased intestinal Tnfα expression, gut barrier dysfunction, and endotoxemia in mice. Am J Physiol Gastrointest Liver Physiol 2024; 326:G3-G15. [PMID: 37874654 DOI: 10.1152/ajpgi.00297.2022] [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] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 10/18/2023] [Accepted: 10/19/2023] [Indexed: 10/26/2023]
Abstract
Concentrated animal feeding operations (CAFOs) are responsible for the production of global greenhouse gases and harmful environmental pollutants including hydrogen sulfide, ammonia, and particulate matter. Swine farmers are frequently exposed to organic dust that is proinflammatory in the lung and are thus at greater risk of developing pneumonia, asthma, and other respiratory conditions. In addition to respiratory disease, air pollutants are directly associated with altered gastrointestinal (GI) physiology and the development of GI diseases, thereby highlighting the gut-lung axis in disease progression. Instillation of hog dust extract (HDE) for 3 wk has been reported to promote the development of chronic airway inflammation in mice, however, the impact of HDE exposure on intestinal homeostasis is poorly understood. We report that 3-wk intranasal exposure of HDE is associated with increased intestinal macromolecule permeability and elevated serum endotoxin concentrations in C57BL/6J mice. In vivo studies also indicated mislocalization of the epithelial cell adhesion protein, E-cadherin, in the colon as well as an increase in the proinflammatory cytokine, Tnfα, in the proximal colon. Moreover, mRNA expression of the Paneth cell-associated marker, Lyz1, was increased the proximal colon, whereas the expression of the goblet cell marker, Muc2, was unchanged in the epithelial cells of the ileum, cecum, and distal colon. These results demonstrate that airway exposure to CAFOs dusts promote airway inflammation and modify the gastrointestinal tract to increase intestinal permeability, induce systemic endotoxemia, and promote intestinal inflammation. Therefore, this study identifies complex physiological consequences of chronic exposure to organic dusts derived from CAFOs on the gut-lung axis.NEW & NOTEWORTHY Agricultural workers have a higher prevalence of occupational respiratory symptoms and are at greater risk of developing respiratory diseases. However, gastrointestinal complications have also been reported, yet the intestinal pathophysiology is understudied. This work is novel because it emphasizes the role of an inhaled environmental pollutant on the development of intestinal pathophysiological outcomes. This work will provide foundation for other studies evaluating how agricultural dusts disrupts host physiology and promotes debilitating gastrointestinal and systemic disorders.
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Affiliation(s)
- Meli'sa S Crawford
- School of Medicine, Division of Biomedical Sciences, University of California, Riverside, California, United States
| | - Arzu Ulu
- School of Medicine, Division of Biomedical Sciences, University of California, Riverside, California, United States
| | - Briana M Ramirez
- Department of Biochemistry and Molecular Biology, University of California, Riverside, California, United States
| | - Alina N Santos
- School of Medicine, Division of Biomedical Sciences, University of California, Riverside, California, United States
| | - Pritha Chatterjee
- School of Medicine, Division of Biomedical Sciences, University of California, Riverside, California, United States
| | - Vinicius Canale
- School of Medicine, Division of Biomedical Sciences, University of California, Riverside, California, United States
| | - Salomon Manz
- School of Medicine, Division of Biomedical Sciences, University of California, Riverside, California, United States
| | - Hillmin Lei
- School of Medicine, Division of Biomedical Sciences, University of California, Riverside, California, United States
| | - Tara M Nordgren
- School of Medicine, Division of Biomedical Sciences, University of California, Riverside, California, United States
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, Colorado, United States
| | - Declan F McCole
- School of Medicine, Division of Biomedical Sciences, University of California, Riverside, California, United States
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Mishra R, Saha A, Chatterjee P, Bhattacharyya A, Patra AK. Ruthenium(II) Polypyridyl-Based Photocages for an Anticancer Phytochemical Diallyl Sulfide: Comparative Dark and Photoreactivity Studies of Caged and Precursor Uncaged Complexes. Inorg Chem 2023; 62:18839-18855. [PMID: 37930798 DOI: 10.1021/acs.inorgchem.3c02038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2023]
Abstract
The spatiotemporal control over the drug's action offered by ruthenium(II) polypyridyl complexes by the selective activation of the prodrug inside the tumor has beaconed toward much-desired selectivity issues in cancer chemotherapy. The photocaging of anticancer bioactive ligands attached synergistically with cytotoxic Ru(II) polypyridyl cores and selective release thereof in cancer cells are a promising modality for more effective drug action. Diallyl sulfide (DAS) naturally found in garlic has anticancer, antioxidant, and anti-inflammatory activities. Herein, we designed two Ru(II) polypyridyl complexes to cage DAS having a thioether-based donor site. For in-depth photocaging studies, we compared the reactivity of the DAS-caged compounds with the uncaged Ru(II)-complexes with the general formula [Ru(ttp)(NN)(L)]+/2+. Here, in the first series, ttp = p-tolyl terpyridine, NN = phen (1,10-phenanthroline), and L = Cl- (1-Cl) and H2O (1-H2O), while for the second series, NN = dpq (pyrazino[2,3-f][1,10]phenanthroline), and L = Cl- (2-Cl) and H2O (2-H2O). The reaction of DAS with 1-H2O and 2-H2O yielded the caged complexes [Ru(ttp)(NN)(DAS)](PF6)2, i.e., 1-DAS and 2-DAS, respectively. The complexes were structurally characterized by X-ray crystallography, and the solution-state characterization was done by 1H NMR and ESI-MS studies. Photoinduced release of DAS from the Ru(II) core was monitored by 1H NMR and UV-vis spectroscopy. When irradiated with a 470 nm blue LED in DMSO, the photosubstitution quantum yields (Φ) of 0.035 and 0.057 were observed for 1-DAS and 2-DAS, respectively. Intriguing solution-state speciation and kinetic behaviors of the uncaged and caged Ru(II)-complexes emerged from 1H NMR studies in the dark, and they are depicted in this work. The caged 1-DAS and 2-DAS complexes remained mostly structurally intact for a reasonably long period in DMSO. The uncaged 1-Cl and 2-Cl complexes, although did not undergo substitution in only DMSO but in the 10% DMSO/H2O mixture, completely converted to the corresponding DMSO-adduct within 16 h. Toward gaining insights into the reactivity with the biological targets, we observed that 1-Cl upon hydrolysis formed an adduct with 5'-GMP, while a small amount of GSSG-adduct was observed when 1-Cl was reacted with GSH in H2O at 323 K. 1-Cl after hydrolysis reacted with l-methionine, although the rate was slightly slower compared with that with DMSO, suggesting varying reaction kinetics with different sulfur-based linkages. Although 1-H2O reacted with sulfoxide and thioether ligands at room temperature, the rate was much faster at higher temperatures obviously, and thiol-based systems needed higher thermal energy for conjugation. Overall, these studies provide insight for thoughtful design of new generation Ru(II) polypyridyl complexes for caging suitable bioactive organic molecules.
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Affiliation(s)
- Ramranjan Mishra
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
| | - Abhijit Saha
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
| | - Pritha Chatterjee
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
| | - Atish Bhattacharyya
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
| | - Ashis K Patra
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
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Sarkar B, Shahid T, Bhattacharya J, Chatterjee P, Biswas LN, Goswami S, Ghosh T, Ghosh SK, Pradhan A. A General Assessment of India's Extremely Low Number of Transgender Cancer Patients. Int J Radiat Oncol Biol Phys 2023; 117:e54. [PMID: 37785667 DOI: 10.1016/j.ijrobp.2023.06.766] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Physiological transgender (TJ) is one of the most marginalized and oppressed community in the Indian subcontinent. The observable percentage of physiological transgender (TJ) cancer patients is extremely low. This concise report aims to assess the factors that contribute to the scarcity of transgender cancer patients. MATERIALS/METHODS The hospital database (2012-2021) of 2 centers in New Delhi (population 32 million) & 1 in Kolkata (15 million) were evaluated. In addition, 28 senior oncologists (ONC) and 17 trans women (TWs) completed a six-point questionnaire. ONC was asked how many TJ patients they had seen in their career, as well as histopathology/site. Furthermore, the data was extrapolated to account for all clinicians' cumulative years of experience. The questions for TWs were age and where they go if you have a disease or illness. And, do they know any TJ cancer patients? RESULTS India's last census (2011) revealed a half-million TJ population. TJ density must be at least 1 million to be comparable to the rest of the world. Hospital databases counted 10,486 patients, with no patient identified as TJ. A total of 37 TJ cancer patients were reported by 28 ONC with an average and collective years of their medical service of 23.1±4.1 and 646 years; distributed in 3 metropolis of 67 million (combined) population (Kolkata, New Delhi, and Mumbai). The average lifetime number of TJ cancer patients/oncologist was 1.3±1.1. Total 12 cases were head neck cancers, with 4 caused by human papillomavirus. The remaining 25 patients have 5 lung, 5 gynecological, 4 breast, 3 brain cancers, 2 soft tissue sarcomas, and 6 cases of unknown origin. The density of 5-year prevalent cancer cases in India is 0.2%, with an estimated 0.007% of TJ cancer patients. TW could not identify any cancer patients in their community. CONCLUSION Being transgender is a social taboo in this part of the world. Their legal rights and classification as the third gender are uncommon. TJs are denied access to standard education, mainstream occupations, and social respect. Although the exact number has never been determined, it is estimated that a large proportion (≈90%) of TJ people are forced to choose roadside begging and working as cheap sex workers. There is no clinical reason why TJs should have fewer cancer incidents, they should be more susceptible to cancer due to unhealthy living conditions, unprotected sex, lack of medical care, proper nutrition, and all other factors associated with their very low socioeconomic status. Nonetheless, it's difficult to find single TJ cancer patients in both public and private hospital OPD. They may be unable to access a traditional clinic due to social discrimination, financial constraints, or they may be unwilling to disclose their true sex. Even TJ's do not show up at free public clinics. The disclosure of true sex may be beneficial in obtaining better treatment, but the more prevalent reason is social unacceptability, which can be overcome through proper education and community economic growth.
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Affiliation(s)
- B Sarkar
- Apollo Multispecialty Hospitals, Kolkata, India; GLA University, Mathura, India
| | - T Shahid
- Apollo Multispecialty Hospitals, Kolkata, India
| | | | | | - L N Biswas
- Apollo Multispecialty Hospitals, Kolkata, India
| | - S Goswami
- Apollo Multispecialty Hospitals, Kolkata, India
| | - T Ghosh
- Apollo Multispecialty Hospitals, Kolkata, India
| | - S K Ghosh
- Apollo Multispecialty Hospitals, Kolkata, India
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Chandrashekar C, Rawat RS, Chatterjee P, Pawar DS. Evaluating the real-world emissions of diesel passenger Car in Indian heterogeneous traffic. Environ Monit Assess 2023; 195:1248. [PMID: 37755554 DOI: 10.1007/s10661-023-11658-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Accepted: 07/31/2023] [Indexed: 09/28/2023]
Abstract
A 30 portable emission measurement system (PEMS) test was conducted in this study to examine the effect of driving modes (aggressive and normal) and road type (urban and rural) on tailpipe emissions. Driving modes were assessed using relative positive acceleration and velocity × positive acceleration factors. The findings revealed that aggressive and normal driving modes differed significantly on urban and rural roads, as evident from paired sample t-test (p < 0.05). Furthermore, aggressive driving exhibited more prominent speed and acceleration on rural roads, while normal driving modes showed consistent acceleration or speed patterns regardless of road conditions as observed from kernel density estimation and box plot analysis. Emission rates (CO, CO2, HC, and NOx) significantly varied between aggressive and normal driving modes on urban and rural roads, as indicated by paired sample t-test analysis (p < 0.05). Aggressive driving increased CO2, CO, and HC emission rates for acceleration and deceleration modes by 18% to 40% compared to normal driving. Aggressive driving modes increased the emission factors (CO, HC, and CO2) by 5% to 25% compared to the normal driving mode on both urban and rural roads. Moreover, the NOx emission factors were also found significant during normal driving conditions on urban roads. This study provides real-world emission factors of diesel cars considering the impact of route, vehicle familiarity, and driving behavior induced by varying traffic conditions, which will contribute to improve the current emissions inventory on both a local and global level.
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Affiliation(s)
- Chowdaiah Chandrashekar
- Department of Civil Engineering, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502285, India
| | - Rohan Singh Rawat
- Department of Climate Change, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502285, India
| | - Pritha Chatterjee
- Department of Civil Engineering, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502285, India
| | - Digvijay Sampatrao Pawar
- Department of Civil Engineering, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502285, India.
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Bhattacharya A, Garg S, Chatterjee P. Examining current trends and future outlook of bio-electrochemical systems (BES) for nutrient conversion and recovery: an overview. Environ Sci Pollut Res Int 2023; 30:86699-86740. [PMID: 37438499 DOI: 10.1007/s11356-023-28500-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 06/25/2023] [Indexed: 07/14/2023]
Abstract
Nutrient-rich waste streams from domestic and industrial sources and the increasing application of synthetic fertilizers have resulted in a huge-scale influx of reactive nitrogen and phosphorus in the environment. The higher concentrations of these pollutants induce eutrophication and foster degradation of aquatic biodiversity. Besides, phosphorus being non-renewable resource is under the risk of rapid depletion. Hence, recovery and reuse of the phosphorus and nitrogen are necessary. Over the years, nutrient recovery, low-carbon energy, and sustainable bioremediation of wastewater have received significant interest. The conventional wastewater treatment technologies have higher energy demand and nutrient removal entails a major cost in the treatment process. For these issues, bio-electrochemical system (BES) has been considered as sustainable and environment friendly wastewater treatment technologies that utilize the energy contained in the wastewater so as to recovery nutrients and purify wastewater. Therefore, this article comprehensively focuses and critically analyzes the potential sources of nutrients, working mechanism of BES, and different nutrient recovery strategies to unlock the upscaling opportunities. Also, economic analysis was done to understand the technical feasibility and potential market value of recovered nutrients. Hence, this review article will be useful in establishing waste management policies and framework along with development of advanced configurations with major emphasis on nutrient recovery rather than removal from the waste stream.
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Affiliation(s)
- Ayushman Bhattacharya
- Department of Civil Engineering, Indian Institute of Technology Hyderabad, Hyderabad, India, 502285
| | - Shashank Garg
- Department of Civil Engineering, Indian Institute of Technology Hyderabad, Hyderabad, India, 502285
| | - Pritha Chatterjee
- Department of Civil Engineering, Indian Institute of Technology Hyderabad, Hyderabad, India, 502285.
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Chatterjee P, Chen J, Yousafzai A, Kawachi I, Subramanian SV. When social identities intersect: understanding inequities in growth outcomes by religion- caste and religion-tribe as intersecting strata of social hierarchy for Muslim and Hindu children in India. Int J Equity Health 2023; 22:115. [PMID: 37316862 DOI: 10.1186/s12939-023-01917-3] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 05/12/2023] [Indexed: 06/16/2023] Open
Abstract
BACKGROUND Minority social status determined by religion, caste and tribal group affiliations, are usually treated as independent dimensions of inequities in India. This masks relative privileges and disadvantages at the intersections of religion-caste and religion-tribal group affiliations, and their associations with population health disparities. METHODS Our analysis was motivated by applications of the intersectionality framework in public health, which underlines how different systems of social stratification mutually inform relative access to material resources and social privilege, that are associated with distributions of population health. Based on this framework and using nationally representative National Family Health Surveys of 1992-93, 1998-99, 2005-06, 2015-16 and 2019-21, we estimated joint disparities by religion-caste and religion-tribe, for prevalence of stunting, underweight and wasting in children between 0-5 years of age. As indicators of long- and short-term growth interruptions, these are key population health indicators capturing developmental potential of children. Our sample included Hindu and Muslim children of < = 5 years, who belonged to Other (forward) castes (the most privileged social group), Other Backward Classes (OBCs), Schedule Castes (SCs) and Schedule Tribe (STs). Hindu-Other (forward) caste, as the strata with the dual advantages of religion and social group was specified as the reference category. We specified Log Poisson models to estimate multiplicative interactions of religion- caste and religion-tribe identities on risk ratio scales. We specified variables that may be associated with caste, tribe, or religion, as dimensions of social hierarchy, and/or with child growth as covariates, including fixed effects for states, survey years, child's age, sex, household urbanicity, wealth, maternal education, mother's height, and weight. We assessed patterns in growth outcomes by intersectional religion-caste and religion-tribe subgroups nationally, assessed their trends over the last 30 years, and across states. FINDINGS The sample comprised 6,594, 4,824, 8,595, 40,950 and 3,352 Muslim children, and 37,231, 24,551, 35,499, 1,87,573 and 171,055 Hindu children over NFHS 1, 2, 3, 4, and 5, respectively. As one example anthropometric outcome, predicted prevalence of stunting among different subgroups were as follows- Hindu Other: 34.7% (95%CI: 33.8, 35.7), Muslim Other: 39.2% (95% CI: 38, 40.5), Hindu OBC: 38.2 (95%CI: 37.1, 39.3), Muslim OBC: 39.6% (95%CI: 38.3, 41), Hindu SCs: 39.5% (95%CI: 38.2, 40.8), Muslims identifying as SCs: 38.5% (95%CI: 35.1, 42.3), Hindu STs: 40.6% (95% CI: 39.4, 41.9), Muslim STs: 39.7% (95%CI: 37.2, 42.4). Over the last three decades, Muslims always had higher prevalence of stunting than Hindus across caste groups. But this difference doubled for the most advantaged castes (Others) and reduced for OBCs (less privileged caste group). For SCs, who are the most disadvantaged caste group, the Muslim disadvantage reversed to an advantage. Among tribes (STs), Muslims always had an advantage, which reduced over time. Similar directions and effect sizes were estimated for prevalence of underweight. For prevalence of wasting, effect sizes were in the same range, but not statistically significant for two minority castes-OBCs and SCs. INTERPRETATION Hindu children had the highest advantages over Muslim children when they belonged to the most privileged castes. Muslim forward caste children were also disadvantaged compared to Hindu children from deprived castes (Hindu OBCs and Hindu SCs), in the case of stunting. Thus, disadvantages from a socially underprivileged religious identity, seemed to override relative social advantages of forward caste identity for Muslim children. Disadvantages born of caste identity seemed to take precedence over the social advantages of Hindu religious identity, for Hindu children of deprived castes and tribes. The doubly marginalized Muslim children from deprived castes were always behind their Hindu counter parts, although their differentials were less than that of Muslim-Hindu children of forward castes. For tribal children, Muslim identity seemed to play a protective role. Our findings indicate monitoring child development outcomes by subgroups capturing intersectional social experiences of relative privilege and access from intersecting religion and social group identities, could inform policies to target health disparities.
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Affiliation(s)
- Pritha Chatterjee
- Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, 677 Huntington Avenue, Boston, MA, 02115, USA.
| | - Jarvis Chen
- Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, 677 Huntington Avenue, Boston, MA, 02115, USA
| | - Aisha Yousafzai
- Department of Global Health and Population, Harvard T.H. Chan School of Public Health, 677 Huntington Avenue, Boston, MA, 02115, USA
| | - Ichiro Kawachi
- Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, 677 Huntington Avenue, Boston, MA, 02115, USA
| | - S V Subramanian
- Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, 677 Huntington Avenue, Boston, MA, 02115, USA
- Harvard Center for Population and Development Studies, Cambridge, MA 02138; and, Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, MA 02115, Boston, USA
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Chatterjee P, Chen J, Yousafzai A, Kawachi I, Subramanian SV. Area level indirect exposure to extended conflicts and early childhood anthropometric outcomes in India: a repeat cross-sectional analysis. Confl Health 2023; 17:23. [PMID: 37150814 PMCID: PMC10164367 DOI: 10.1186/s13031-023-00519-8] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 04/12/2023] [Indexed: 05/09/2023] Open
Abstract
BACKGROUND Protracted, internal conflicts with geographic variations within countries, are an important understudied community exposure for adverse child health outcomes. METHODS Violent events from the Uppsala Conflict Data Program (UCDP) between January 2016-December 2020 and January 2010-December 2015, were included as exposure events for children sampled in National Family Health Surveys (NFHS) 5 (2019-21) and NFHS 4 (2015-16), respectively. Geocoded data from UCDP were merged with residential clusters from NFHS, to identify children living in villages or urban blocks situated at <= 50 km from conflict sites. Within these clusters, which we defined as conflict exposed, we studied risks of stunting, underweight and wasting in children, prenatally, and in 0-3 years. We assessed sensitivity on a subsample of siblings with discordant conflict exposures. RESULTS For NFHS 5, exposure to violence between 0 and 3 years was associated with 1.16 times (95% CI 1.11-1.20) higher risks of stunting, 1.08 (1.04, 1.12) times higher risks of underweight, and no change in wasting. In-utero violence exposure was associated with 1.11 times (95% CI 1.04-1.17) higher risks of stunting, 1.08 (95% CI 1.02-1.14) times higher risks of underweight, and no change in wasting, among children <= 2 years. In 17,760 siblings of 8333 mothers, exposure to violence during 0-3 years, was associated with a 1.19 times higher risk of stunting (95% CI - 0.24 to 0.084). Incremental quartiles of violence exposure had higher risks of stunting and underweight until quartile 3. CONCLUSION In-utero and early childhood indirect exposure to protracted conflicts were associated with increased stunting and underweight in India. Given the continued exposures of such historically and contextually rooted internal conflicts in many LMICs, chronic violence exposures should be targeted in public health policies as important social and political determinant of child health.
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Affiliation(s)
- Pritha Chatterjee
- Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, 677 Huntington Avenue, Boston, MA, 02115, USA.
| | - Jarvis Chen
- Department of Global Health and Population, Harvard T.H. Chan School of Public Health, 677 Huntington Avenue, Boston, MA, 02115, USA
| | - Aisha Yousafzai
- Department of Global Health and Population, Harvard T.H. Chan School of Public Health, 677 Huntington Avenue, Boston, MA, 02115, USA
| | - Ichiro Kawachi
- Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, 677 Huntington Avenue, Boston, MA, 02115, USA
| | - S V Subramanian
- Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, 677 Huntington Avenue, Boston, MA, 02115, USA
- Harvard Center for Population and Development Studies, Cambridge, MA, 02138, USA
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Canale V, Spalinger MR, Alvarez R, Sayoc-Becerra A, Sanati G, Manz S, Chatterjee P, Santos AN, Lei H, Jahng S, Chu T, Shawki A, Hanson E, Eckmann L, Ouellette AJ, McCole DF. PTPN2 is a Critical Regulator of Ileal Paneth Cell Viability and Function in Mice. Cell Mol Gastroenterol Hepatol 2023; 16:39-62. [PMID: 37030630 DOI: 10.1016/j.jcmgh.2023.03.009] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 03/29/2023] [Accepted: 03/30/2023] [Indexed: 04/10/2023]
Abstract
BACKGROUND & AIMS Loss-of-function variants in the protein tyrosine phosphatase non-receptor type 2 (PTPN2) gene are associated with increased risk of Inflammatory Bowel Disease (IBD). We recently showed that Ptpn2 is critical for intestinal epithelial cell (IEC) barrier maintenance, IEC-macrophage communication, and modulation of the gut microbiome in mice restricting expansion of a small intestinal pathobiont associated with IBD. Here, we aimed to identify how Ptpn2-loss affects ileal IEC subtypes and their function in vivo. METHODS Constitutive Ptpn2-wild-type (WT), heterozygous (HET) and knockout (KO) mice, as well as mice with inducible deletion of Ptpn2 in IECs, were used in the study. Investigation was performed using imaging techniques, flow cytometry, enteroid culture, and analysis of gene and protein levels of IEC markers. RESULTS Partial transcriptome analysis revealed that Paneth cell-associated antimicrobial peptides (AMP) Lyz1, Pla2g2a and Defa6 expression, were markedly downregulated in Ptpn2-KO mice compared with WT and HET. In parallel, Paneth cell numbers were reduced, their endoplasmic reticulum (ER) architecture was disrupted, and the ER stress protein, CHOP, was increased in Ptpn2-KO mice. Despite reduced Paneth cell number, flow cytometry showed increased expression of the Paneth cell-stimulatory cytokines IL-22 and IFN-γ+ in CD4+ T-cells isolated from Ptpn2-KO ileum. Key findings in constitutive Ptpn2-KO mice were confirmed in epithelium-specific Ptpn2ΔIEC mice, which also showed impaired lysozyme protein levels in Paneth cells compared to Ptpn2fl/fl control mice. CONCLUSION Constitutive Ptpn2-deficiency affects Paneth cell viability and compromises Paneth cell-specific AMP production. The observed effects may contribute to the increased susceptibility to intestinal infection and dysbiosis in these mice.
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Affiliation(s)
- Vinicius Canale
- Division of Biomedical Sciences, University of California Riverside, Riverside, California, USA;; Biochemistry and Molecular Biology Department, University of California Riverside, Riverside, California, USA;; CAPES Foundation, Ministry of Education of Brazil, Brasília - DF - 70040-020, Brazil
| | - Marianne R Spalinger
- Division of Biomedical Sciences, University of California Riverside, Riverside, California, USA;; Department of Gastroenterology and Hepatology, University Hospital Zurich, University of Zurich, Switzerland
| | - Rocio Alvarez
- Division of Biomedical Sciences, University of California Riverside, Riverside, California, USA
| | - Anica Sayoc-Becerra
- Division of Biomedical Sciences, University of California Riverside, Riverside, California, USA
| | - Golshid Sanati
- Division of Biomedical Sciences, University of California Riverside, Riverside, California, USA
| | - Salomon Manz
- Division of Biomedical Sciences, University of California Riverside, Riverside, California, USA;; Department of Gastroenterology and Hepatology, University Hospital Zurich, University of Zurich, Switzerland
| | - Pritha Chatterjee
- Division of Biomedical Sciences, University of California Riverside, Riverside, California, USA;; Biochemistry and Molecular Biology Department, University of California Riverside, Riverside, California, USA
| | - Alina N Santos
- Division of Biomedical Sciences, University of California Riverside, Riverside, California, USA
| | - Hillmin Lei
- Division of Biomedical Sciences, University of California Riverside, Riverside, California, USA
| | - Sharon Jahng
- Division of Biomedical Sciences, University of California Riverside, Riverside, California, USA
| | - Timothy Chu
- Division of Biomedical Sciences, University of California Riverside, Riverside, California, USA
| | - Ali Shawki
- Division of Biomedical Sciences, University of California Riverside, Riverside, California, USA
| | - Elaine Hanson
- Division of Gastroenterology, University of California, San Diego, La Jolla, CA, USA
| | - Lars Eckmann
- Division of Gastroenterology, University of California, San Diego, La Jolla, CA, USA
| | - André J Ouellette
- Department of Pathology and Laboratory Medicine, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Declan F McCole
- Division of Biomedical Sciences, University of California Riverside, Riverside, California, USA;.
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9
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Spalinger MR, Canale V, Becerra A, Shawki A, Crawford M, Santos AN, Chatterjee P, Li J, Nair MG, McCole DF. PTPN2 regulates bacterial clearance in a mouse model of enteropathogenic and enterohemorrhagic E. coli infection. JCI Insight 2023; 8:156909. [PMID: 36810248 PMCID: PMC9977497 DOI: 10.1172/jci.insight.156909] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 01/11/2023] [Indexed: 02/23/2023] Open
Abstract
Macrophages intimately interact with intestinal epithelial cells, but the consequences of defective macrophage-epithelial cell interactions for protection against enteric pathogens are poorly understood. Here, we show that in mice with a deletion in protein tyrosine phosphatase nonreceptor type 2 (PTPN2) in macrophages, infection with Citrobacter rodentium, a model of enteropathogenic and enterohemorrhagic E. coli infection in humans, promoted a strong type 1/IL-22-driven immune response, culminating in accelerated disease but also faster clearance of the pathogen. In contrast, deletion of PTPN2 specifically in epithelial cells rendered the epithelium unable to upregulate antimicrobial peptides and consequently resulted in a failure to eliminate the infection. The ability of PTPN2-deficient macrophages to induce faster recovery from C. rodentium was dependent on macrophage-intrinsic IL-22 production, which was highly increased in macrophages deficient in PTPN2. Our findings demonstrate the importance of macrophage-mediated factors, and especially macrophage-derived IL-22, for the induction of protective immune responses in the intestinal epithelium, and show that normal PTPN2 expression in the epithelium is crucial to allow for protection against enterohemorrhagic E. coli and other intestinal pathogens.
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Affiliation(s)
- Marianne R Spalinger
- Division of Biomedical Sciences, School of Medicine, University of California, Riverside, Riverside, California, USA.,Department for Gastroenterology and Hepatology, University Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Vinicius Canale
- Division of Biomedical Sciences, School of Medicine, University of California, Riverside, Riverside, California, USA
| | - Anica Becerra
- Division of Biomedical Sciences, School of Medicine, University of California, Riverside, Riverside, California, USA
| | - Ali Shawki
- Division of Biomedical Sciences, School of Medicine, University of California, Riverside, Riverside, California, USA
| | - Meli'sa Crawford
- Division of Biomedical Sciences, School of Medicine, University of California, Riverside, Riverside, California, USA
| | - Alina N Santos
- Division of Biomedical Sciences, School of Medicine, University of California, Riverside, Riverside, California, USA
| | - Pritha Chatterjee
- Division of Biomedical Sciences, School of Medicine, University of California, Riverside, Riverside, California, USA
| | - Jiang Li
- Division of Biomedical Sciences, School of Medicine, University of California, Riverside, Riverside, California, USA
| | - Meera G Nair
- Division of Biomedical Sciences, School of Medicine, University of California, Riverside, Riverside, California, USA
| | - Declan F McCole
- Division of Biomedical Sciences, School of Medicine, University of California, Riverside, Riverside, California, USA
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10
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Sarkar B, Shahid T, Biswal S, Appunu K, Bhattacharya J, Ghosh T, De A, George K, Mandal S, Roy Chowdhury S, Ganesh T, Munshi A, Mukherjee M, Das A, Soren P, Arjunan M, Chatterjee P, Biswas L, Pradhan A. A Comparative Dose-Escalation Analysis for the Head and Neck Reirradiation Patients with and without Appropriate DICOM Based Dose-Volume Information of Primary Radiotherapy. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.1668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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11
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Fathima J, Chatterjee P. A techno-economic assessment of nutrient recovery from wastewater using microalgae: scenario in India collected from published literature. Water Sci Technol 2022; 86:1325-1341. [PMID: 36178809 DOI: 10.2166/wst.2022.260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The true potential of the microalgae-based wastewater treatment (MWT) process is determined based on whether the process will provide a positive energy output and whether it is economically viable. The objectives of this study are dynamic modelling of microalgae growth based on initial wastewater concentration, temperature, solar radiation and a techno-economic assessment for an MWT scheme for application in a hot, dry climate. Through reference to relevant literature data on MWT in the Indian subcontinent, a selection of appropriate microalgal species Chlorella and Scenedesmus was made. The dynamic model developed was successfully calibrated and validated using independent experimental data collected from the published literature. Cost of production of bio-crude from microalgae grown in a hybrid photobioreactor and pond system in kitchen wastewater of Indian Institute of Technology, Hyderabad was calculated. A break-even selling price (BESP) of US$0.549/kg was obtained for the microalgae biomass. The cost of production of 1 L bio-crude was US$0.96 (Rs 69-74), which is comparable with crude oil cost. The model developed can be used by practising engineers to predict biomass growth and nutrient removal, thereby achieving a break-even point for cost efficiency.
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Affiliation(s)
- Jesna Fathima
- Department of Civil Engineering, Indian Institute of Technology Hyderabad, Kandi-Mandal, Sangareddy district, Telangana 502284, India E-mail:
| | - Pritha Chatterjee
- Department of Civil Engineering, Indian Institute of Technology Hyderabad, Kandi-Mandal, Sangareddy district, Telangana 502284, India E-mail:
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12
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Chatterjee P, Gupta A, Subramanian S. Can administrative health data be used to estimate population level birth and child mortality estimates? A comparison of India's Health Information Management System data with nationally representative survey data. SSM Popul Health 2022; 19:101148. [PMID: 35795262 PMCID: PMC9251721 DOI: 10.1016/j.ssmph.2022.101148] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 06/10/2022] [Accepted: 06/11/2022] [Indexed: 11/25/2022] Open
Abstract
HMIS covers a large proportion of births, but a smaller fraction of child deaths compared to estimates from surveys. Birth and death coverage in HMIS, while incomplete, has been improving nationally and for many states. States that have improved HMIS reporting, should be studied for replicating best practices. HMIS can provide signals for real time policy decisions, if used with due consideration of its limitations. Including patient socioeconomic and demographic traits in HMIS, could further bolster its utility in population health.
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13
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Hämäläinen A, Kokko M, Chatterjee P, Kinnunen V, Rintala J. The effects of digestate pyrolysis liquid on the thermophilic anaerobic digestion of sewage sludge - Perspective for a centralized biogas plant using thermal hydrolysis pretreatment. Waste Manag 2022; 147:73-82. [PMID: 35623263 DOI: 10.1016/j.wasman.2022.05.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 01/30/2022] [Revised: 05/02/2022] [Accepted: 05/14/2022] [Indexed: 06/15/2023]
Abstract
The use of pyrolysis process to valorize digestate from anaerobic digestion (AD) of municipal sewage sludge for biochar production was piloted in a central biogas plant. The pyrolysis also generates pyrolysis liquid with high organics and nutrient contents that currently has no value and requires treatment, which could potentially be done in AD. As the pyrolysis liquid may contain inhibitory compounds, we investigated the effects of adding the pyrolysis liquid on AD of sewage sludge and thermal hydrolysis pretreated sewage sludge (THSS) simulating the full-scale centralized biogas plant conditions. In batch assays, the pyrolysis liquid as such did not produce any methane, and the 1% and 5% (v/w) shares suppressed the methane production from THSS by 14-19%, while a smaller decrease in methane production was observed with sewage sludge. However, in the semi-continuous reactor experiments, pyrolysis liquid at a 1% (v/w) share was added in sewage sludge or THSS feed without affecting the methane yields or digestate characteristics. The laboratory results indicated that pyrolysis liquid can be treated in AD, while extrapolating the results to the centralized biogas plant indicated minor increase in the overall methane production and an increased potential for ammonium recovery.
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Affiliation(s)
- Anna Hämäläinen
- Faculty of Engineering and Natural Sciences, Tampere University, P.O.Box 541, 33104 Tampere University, Finland
| | - Marika Kokko
- Faculty of Engineering and Natural Sciences, Tampere University, P.O.Box 541, 33104 Tampere University, Finland
| | - Pritha Chatterjee
- Faculty of Engineering and Natural Sciences, Tampere University, P.O.Box 541, 33104 Tampere University, Finland; Department of Civil Engineering, Indian Institute of Technology Hyberabad, Hyberabad, India
| | | | - Jukka Rintala
- Faculty of Engineering and Natural Sciences, Tampere University, P.O.Box 541, 33104 Tampere University, Finland
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14
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Chatterjee P, Spalinger M, Shawki A, Santos A, Gries C, Sayoc A, Canale V, Crawford M, Lei H, Borneman J, McCole D. Intestinal Epithelial PTPN2 Restricts Adherent‐Invasive
E. coli
Colonization and Promotes Anti‐Microbial Peptide Responses in Mice. FASEB J 2022. [DOI: 10.1096/fasebj.2022.36.s1.r2659] [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: 11/11/2022]
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15
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Lei H, Shawki A, Spalinger MR, Canale V, Santos AN, Chatterjee P, Crawford MS, Manz S, Becerra A, Scharl M, McCole DF. Loss of PTPN2 Activity Alters Iron Handling Protein Expression in IBD Patients and Causes Iron Deficiency in Mice. FASEB J 2022. [DOI: 10.1096/fasebj.2022.36.s1.r3208] [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: 11/11/2022]
Affiliation(s)
- Hillmin Lei
- Division of Biomedical SciencesUniversity of CaliforniaMoreno ValleyCA
| | - Ali Shawki
- Division of Biomedical SciencesUniversity of CaliforniaIrvineCA
| | | | - Vinicius Canale
- Division of Biomedical SciencesUniversity of CaliforniaRiversideCA
| | - Alina N. Santos
- Division of Biomedical SciencesUniversity of CaliforniaRiversideCA
| | | | | | - Salomon Manz
- Division of Biomedical SciencesUniversity of CaliforniaRiversideCA
| | - Anica Becerra
- Division of Biomedical SciencesUniversity of CaliforniaRiversideCA
| | - Michael Scharl
- Department of Gastroenterology & HepatologyUniversity Hospital ZurichZürich
| | - Declan F. McCole
- Division of Biomedical SciencesUniversity of CaliforniaRiversideCA
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16
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Chatterjee P, Stevens H, Bowles-Welch A, Kippner L, Marmon A, Drissi H, Gibson G, Yeago C, Roy K. Mesenchymal Stem/Stromal Cells: HIGH-DIMENSIONALL MULTI-OMICS COMPARISON OF CELLS IN BONE MARROW REVEALED ALTERATIONS TO IMMUNE CELLS IN OSTEOARTHRITIS. Cytotherapy 2022. [DOI: 10.1016/s1465-3249(22)00163-3] [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: 11/03/2022]
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17
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Agarwal S, Kardam S, Chatterjee P, Kumar C, Boruah M, Sharma MC, Tabin M, Ramakrishnan L. CaSR expression in normal parathyroid and PHPT: new insights into pathogenesis from an autopsy-based study. J Endocrinol Invest 2022; 45:337-346. [PMID: 34302683 DOI: 10.1007/s40618-021-01646-w] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Accepted: 07/18/2021] [Indexed: 10/20/2022]
Abstract
PURPOSE Calcium sensing receptor (CaSR), on the surface of normal parathyroid cells, is essential for maintaining serum calcium levels. The normal pattern of CaSR immunostaining remains undefined and is presumptively circumferential. Given the physiological variation in serum calcium, we postulated that CaSR expression could not be uniformly circumferential. Also, cytoplasmic expression has not been evaluated either in normal or pathological tissues. We studied normal parathyroid tissues derived from forensic autopsies and those rimming parathyroid adenomas for membranous and cytoplasmic CaSR immunoexpression. Results were compared with primary hyperparathyroidism (PHPT) to look for any pathogenetic implications. MATERIALS AND METHODS We evaluated 34 normal parathyroid tissues from 11 autopsies, 30 normal rims, 45 parathyroid adenoma, 10 hyperplasia, and 7 carcinoma cases. Membranous expression was categorized complete/incomplete and weak/moderate/strong; scored using Her2/Neu and Histo-scores; predominant pattern noted. Cytoplasmic expression was categorized negative/weak/moderate/strong; predominant intensity noted. RESULTS Normal autopsy-derived parathyroid tissues were Her2/Neu 3 + , but incomplete membranous staining predominated in 85%. Their immune-scores were significantly more than the cases (p < < 0.05). The mean histo-score of normal rims was intermediate between the two (p < < 0.05). Cytoplasmic expression was strong in all autopsy-derived tissues, weak/negative in hyperplasia (100%), moderate in 16% adenomas, and 43% carcinomas. CONCLUSIONS Normal autopsy-derived parathyroid tissues showed strong but predominantly incomplete membranous expression. Surface CaSR expression decreased in PHPT and is probably an early event in parathyroid adenoma, seen even in normal rims. Whether there is a defect in CaSR trafficking from the cytoplasm to the cell surface in adenoma and carcinoma needs further evaluation.
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Affiliation(s)
- S Agarwal
- Department of Pathology, All India Institute of Medical Sciences, New Delhi, 110029, India.
| | - S Kardam
- Department of Pathology, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - P Chatterjee
- Department of Pathology, Lady Hardinge Medical College and Associated Hospitals, New Delhi, India
| | - C Kumar
- Department of Surgical Oncology, All India Institute of Medical Sciences, Bilaspur, Himachal Pradesh, India
| | - M Boruah
- Department of Pathology, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - M C Sharma
- Department of Pathology, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - M Tabin
- Department of Forensic Medicine and Toxicology, All India Institute of Medical Sciences, New Delhi, India
| | - L Ramakrishnan
- Department of Cardiac Biochemistry, All India Institute of Medical Sciences, New Delhi, India
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18
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Spalinger MR, Shawki A, Chatterjee P, Canale V, Santos A, Sayoc-Becerra A, Scharl M, Tremblay ML, Borneman J, McCole DF. Autoimmune susceptibility gene PTPN2 is required for clearance of adherent-invasive Escherichia coli by integrating bacterial uptake and lysosomal defence. Gut 2022; 71:89-99. [PMID: 33563644 PMCID: PMC8666829 DOI: 10.1136/gutjnl-2020-323636] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 01/03/2021] [Accepted: 01/19/2021] [Indexed: 12/24/2022]
Abstract
OBJECTIVES Alterations in the intestinal microbiota are linked with a wide range of autoimmune and inflammatory conditions, including inflammatory bowel diseases (IBD), where pathobionts penetrate the intestinal barrier and promote inflammatory reactions. In patients with IBD, the ability of intestinal macrophages to efficiently clear invading pathogens is compromised resulting in increased bacterial translocation and excessive immune reactions. Here, we investigated how an IBD-associated loss-of-function variant in the protein tyrosine phosphatase non-receptor type 2 (PTPN2) gene, or loss of PTPN2 expression affected the ability of macrophages to respond to invading bacteria. DESIGN IBD patient-derived macrophages with wild-type (WT) PTPN2 or carrying the IBD-associated PTPN2 SNP, peritoneal macrophages from WT and constitutive PTPN2-knockout mice, as well as mice specifically lacking PTPN2 in macrophages were infected with non-invasive K12 Escherichia coli, the human adherent-invasive E. coli (AIEC) LF82, or a novel mouse AIEC (mAIEC) strain. RESULTS Loss of PTPN2 severely compromises the ability of macrophages to clear invading bacteria. Specifically, loss of functional PTPN2 promoted pathobiont invasion/uptake into macrophages and intracellular survival/proliferation by three distinct mechanisms: Increased bacterial uptake was mediated by enhanced expression of carcinoembryonic antigen cellular adhesion molecule (CEACAM)1 and CEACAM6 in PTPN2-deficient cells, while reduced bacterial clearance resulted from defects in autophagy coupled with compromised lysosomal acidification. In vivo, mice lacking PTPN2 in macrophages were more susceptible to mAIEC infection and mAIEC-induced disease. CONCLUSIONS Our findings reveal a tripartite regulatory mechanism by which PTPN2 preserves macrophage antibacterial function, thus crucially contributing to host defence against invading bacteria.
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Affiliation(s)
- Marianne Rebecca Spalinger
- Division of Biomedical Sciences, University of California Riverside School of Medicine, Riverside, California, USA
- Department of Gastroenterology and Hepatology, University Hospital Zürich, Zürich, Switzerland
| | - Ali Shawki
- Division of Biomedical Sciences, University of California Riverside School of Medicine, Riverside, California, USA
| | - Pritha Chatterjee
- Division of Biomedical Sciences, University of California Riverside School of Medicine, Riverside, California, USA
| | - Vinicius Canale
- Division of Biomedical Sciences, University of California Riverside School of Medicine, Riverside, California, USA
| | - Alina Santos
- Division of Biomedical Sciences, University of California Riverside School of Medicine, Riverside, California, USA
| | - Anica Sayoc-Becerra
- Division of Biomedical Sciences, University of California Riverside School of Medicine, Riverside, California, USA
| | - Michael Scharl
- Department of Gastroenterology and Hepatology, University Hospital Zürich, Zürich, Switzerland
| | - Michel L Tremblay
- Department of Biochemistry, McGill University, Montreal, Quebec, Canada
- Goodman Cancer Research Centre, Rosalind and Morris Goodman Cancer Research Centre, Montreal, Quebec, Canada
| | - James Borneman
- Department of Plant Pathology and Microbiology, University of California Riverside, Riverside, California, USA
| | - Declan F McCole
- Division of Biomedical Sciences, University of California Riverside School of Medicine, Riverside, California, USA
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19
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Sarkar B, Munshi A, Shahid T, Sengupta S, Bhaskar R, Ganesh T, Paul A, Bhattacharjee B, Pun R, Imbulgoda N, Biswal S, Rastogi K, Bansal K, Baba A, Yasmin T, Bhattacharya J, Ghosh T, De A, Chatterjee P, Pradhan A. Growth Characteristics of Woman Radiation Oncologists in South Asia: Assessment of Gender Neutrality and Leadership Position. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.1027] [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]
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20
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Pradhan P, Chatterjee P, Stevens H, Marmon A, Medrano-Trochez C, Jimenez A, Kippner L, Li Y, Savage E, Gaul D, Fernández F, Gibson G, Kurtzberg J, Kotanchek T, Yeago C, Roy K. Multiomic analysis and computational modeling to identify critical quality attributes for immunomodulatory potency of mesenchymal stromal cells. Cytotherapy 2021. [DOI: 10.1016/s1465324921002826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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21
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Chatterjee P, Spalinger M, Shawki A, Gries C, Sayoc A, Santos A, Canale V, Crawford M, Lei H, Borneman J, McCole D. Loss of PTPN2 in Intestinal Epithelial Cells Increases Invasion of Human Intestinal Epithelial Cells and Intestinal Permeability in Mice by Adherent‐invasive
E. coli. FASEB J 2021. [DOI: 10.1096/fasebj.2021.35.s1.04545] [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: 11/11/2022]
Affiliation(s)
- Pritha Chatterjee
- Biochemistry and MicrobiologyUniversity of California, RiversideRiversideCA
| | | | - Ali Shawki
- University of California, RiversideRiversideCA
| | - Casey Gries
- University of California, RiversideRiversideCA
| | - Anica Sayoc
- University of California, RiversideRiversideCA
| | | | | | | | - Hillmin Lei
- University of California, RiversideRiversideCA
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22
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Eregowda T, Chatterjee P, Pawar DS. Impact of lockdown associated with COVID19 on air quality and emissions from transportation sector: case study in selected Indian metropolitan cities. ACTA ACUST UNITED AC 2021; 41:401-412. [PMID: 33717826 PMCID: PMC7940867 DOI: 10.1007/s10669-021-09804-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/10/2021] [Indexed: 12/23/2022]
Abstract
This study examines the impact of air quality in selected Indian metropolitan cities during the COVID19 pandemic lockdown period. Concentrations of air quality parameters such as PM2.5, NO2, SO2, and CO during the transition to lockdown and the actual lockdown period were compared with business as usual periods (a period prior to COVID19 lockdown and a corresponding period in 2019) to estimate the reduction in emission in four major IT hubs in India namely Bengaluru, Chennai, Hyderabad and Pune. A 40-45% reduction in PM2.5 concentration was observed, in these cities, during the lockdown compared to the corresponding period in 2019 and a 20-45% reduction was observed compared to business as usual period in 2020. A vehicle kilometer traveled (VKT)-related questionnaire survey-based study in Hyderabad revealed that, with 48% of population utilizing work-from-home during the transition to lockdown period, vehicular PM2.5 emission in Hyderabad reduced by 54% compared to usual traffic emissions prior to COVID19 lockdown. Furthermore, it was estimated that emission of up to 3243, 777, 113, and 54 tons/year of CO, NOx, PM2.5, and SO2, respectively, could be avoided in Hyderabad alone, if work-from-home is implemented on a 2 days/week basis. The experience from this study can be used to develop policies favoring reduced use of private vehicles or implementation of work-from-home to combat air pollution and reduce carbon emissions.
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Affiliation(s)
- Tejaswini Eregowda
- National Green Tribunal Monitoring Cell, Karnataka State Pollution Control Board, Bengaluru, 560001 India.,Environmental Management and Policy Research Institute, Department of Forest, Ecology & Environment, Government of Karnataka, Bangalore, 560076 India
| | - Pritha Chatterjee
- Department of Civil Engineering, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502285 India
| | - Digvijay S Pawar
- Department of Civil Engineering, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502285 India
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23
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Alidina S, Chatterjee P, Zanial N, Alreja SS, Balira R, Barash D, Ernest E, Giiti GC, Maina E, Mazhiqi A, Mushi R, Reynolds C, Sydlowski M, Tinuga F, Maongezi S, Meara JG, Kapologwe NA, Barringer E, Cainer M, Citron I, DiMeo A, Fitzgerald L, Ghandour H, Gruendl M, Hellar A, Jumbam DT, Katoto A, Kelly L, Kisakye S, Kuchukhidze S, Lama TN, Menon G, Mshana S, Reynolds C, Segirinya H, Simba D, Smith V, Staffa SJ, Strader C, Tibyehabwa L, Troxel A, Varallo J, Wurdeman T, Zurakowski D. Improving surgical quality in low-income and middle-income countries: why do some health facilities perform better than others? BMJ Qual Saf 2021; 30:937-949. [PMID: 33547219 PMCID: PMC8606467 DOI: 10.1136/bmjqs-2020-011795] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 12/15/2020] [Accepted: 01/18/2021] [Indexed: 12/30/2022]
Abstract
BACKGROUND Evidence on heterogeneity in outcomes of surgical quality interventions in low-income and middle-income countries is limited. We explored factors driving performance in the Safe Surgery 2020 intervention in Tanzania's Lake Zone to distil implementation lessons for low-resource settings. METHODS We identified higher (n=3) and lower (n=3) performers from quantitative data on improvement from 14 safety and teamwork and communication indicators at 0 and 12 months from 10 intervention facilities, using a positive deviance framework. From 72 key informant interviews with surgical providers across facilities at 1, 6 and 12 months, we used a grounded theory approach to identify practices of higher and lower performers. RESULTS Performance experiences of higher and lower performers differed on the following themes: (1) preintervention context, (2) engagement with Safe Surgery 2020 interventions, (3) teamwork and communication orientation, (4) collective learning orientation, (5) role of leadership, and (6) perceived impact of Safe Surgery 2020 and beyond. Higher performers had a culture of teamwork which helped them capitalise on Safe Surgery 2020 to improve surgical ecosystems holistically on safety practices, teamwork and communication. Lower performers prioritised overhauling safety practices and began considering organisational cultural changes much later. Thus, while also improving, lower performers prioritised different goals and trailed higher performers on the change continuum. CONCLUSION Future interventions should be tailored to facility context and invest in strengthening teamwork, communication and collective learning and facilitate leadership engagement to build a receptive climate for successful implementation of safe surgery interventions.
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Affiliation(s)
- Shehnaz Alidina
- Program in Global Surgery and Social Change, Harvard Medical School Department of Global Health and Social Medicine, Boston, Massachusetts, USA
| | - Pritha Chatterjee
- Program in Global Surgery and Social Change, Harvard Medical School Department of Global Health and Social Medicine, Boston, Massachusetts, USA.,Department of Social and Behavioral Sciences, Harvard University T H Chan School of Public Health, Boston, Massachusetts, USA
| | - Noor Zanial
- Program in Global Surgery and Social Change, Harvard Medical School Department of Global Health and Social Medicine, Boston, Massachusetts, USA
| | - Sakshie Sanjay Alreja
- Program in Global Surgery and Social Change, Harvard Medical School Department of Global Health and Social Medicine, Boston, Massachusetts, USA
| | - Rebecca Balira
- Department of Epidemiology, National Institute for Medical Research Mwanza Research Centre, Mwanza, Tanzania
| | | | - Edwin Ernest
- Safe Surgery 2020 Project, Jhpiego, Dar es Salaam, Tanzania
| | | | | | - Adelina Mazhiqi
- Program in Global Surgery and Social Change, Harvard Medical School Department of Global Health and Social Medicine, Boston, Massachusetts, USA
| | - Rahma Mushi
- Department of Obstetrics and Gynecology, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
| | - Cheri Reynolds
- Department of Global Health, Assist International, Ripon, California, USA
| | - Meaghan Sydlowski
- Program in Global Surgery and Social Change, Harvard Medical School Department of Global Health and Social Medicine, Boston, Massachusetts, USA
| | - Florian Tinuga
- Department of Health, Social Welfare and Nutrition Service, President's Office - Regional Administration and Local Government, Dodoma, Tanzania
| | - Sarah Maongezi
- Department of Adult Non-Communicable Diseases, Ministry of Health, Community Development, Gender, Elderly and Children, Dodoma, Tanzania
| | - John G Meara
- Program in Global Surgery and Social Change, Harvard Medical School Department of Global Health and Social Medicine, Boston, Massachusetts, USA.,Department of Plastic and Oral Surgery, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Ntuli A Kapologwe
- Department of Health, Social Welfare and Nutrition Service, President's Office - Regional Administration and Local Government, Dodoma, Tanzania
| | - Erin Barringer
- Dalberg Advisors, Dalberg Group, New York, New York, USA
| | - Monica Cainer
- Department of Global Health, Assist International, Ripon, California, USA
| | - Isabelle Citron
- Program in Global Surgery and Social Change, Harvard Medical School Department of Global Health and Social Medicine, Boston, Massachusetts, USA
| | - Amanda DiMeo
- Program in Global Surgery and Social Change, Harvard Medical School Department of Global Health and Social Medicine, Boston, Massachusetts, USA
| | | | - Hiba Ghandour
- Program in Global Surgery and Social Change, Harvard Medical School Department of Global Health and Social Medicine, Boston, Massachusetts, USA
| | - Magdalena Gruendl
- Program in Global Surgery and Social Change, Harvard Medical School Department of Global Health and Social Medicine, Boston, Massachusetts, USA
| | | | - Desmond T Jumbam
- Program in Global Surgery and Social Change, Harvard Medical School Department of Global Health and Social Medicine, Boston, Massachusetts, USA
| | - Adam Katoto
- Safe Surgery 2020 Project, Jhpiego, Dar es Salaam, Tanzania
| | - Lauren Kelly
- Program in Global Surgery and Social Change, Harvard Medical School Department of Global Health and Social Medicine, Boston, Massachusetts, USA
| | - Steve Kisakye
- Dalberg Implement, Dalberg Group, Dar es Salaam, Tanzania
| | - Salome Kuchukhidze
- Program in Global Surgery and Social Change, Harvard Medical School Department of Global Health and Social Medicine, Boston, Massachusetts, USA
| | - Tenzing N Lama
- Program in Global Surgery and Social Change, Harvard Medical School Department of Global Health and Social Medicine, Boston, Massachusetts, USA
| | - Gopal Menon
- Program in Global Surgery and Social Change, Harvard Medical School Department of Global Health and Social Medicine, Boston, Massachusetts, USA
| | - Stella Mshana
- Safe Surgery 2020 Project, Jhpiego, Dar es Salaam, Tanzania
| | - Chase Reynolds
- Department of Global Health, Assist International, Ripon, California, USA
| | | | - Dorcas Simba
- Safe Surgery 2020 Project, Jhpiego, Dar es Salaam, Tanzania
| | - Victoria Smith
- Department of Global Health, Assist International, Ripon, California, USA
| | - Steven J Staffa
- Departments of Anesthesiology and Surgery, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Christopher Strader
- Program in Global Surgery and Social Change, Harvard Medical School Department of Global Health and Social Medicine, Boston, Massachusetts, USA
| | | | - Alena Troxel
- Safe Surgery 2020 Project, Jhpiego, Baltimore, Maryland, USA
| | - John Varallo
- Safe Surgery 2020 Project, Jhpiego, Baltimore, Maryland, USA
| | - Taylor Wurdeman
- Program in Global Surgery and Social Change, Harvard Medical School Department of Global Health and Social Medicine, Boston, Massachusetts, USA
| | - David Zurakowski
- Departments of Anesthesiology and Surgery, Boston Children's Hospital, Boston, Massachusetts, USA
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Eregowda T, Chatterjee P, Pawar DS. Impact of lockdown associated with COVID19 on air quality and emissions from transportation sector: case study in selected Indian metropolitan cities. Environ Syst Decis 2021. [PMID: 33717826 DOI: 10.1007/s10669-021-09804-4/tables/6] [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] [Subscribe] [Scholar Register] [Indexed: 04/21/2023]
Abstract
This study examines the impact of air quality in selected Indian metropolitan cities during the COVID19 pandemic lockdown period. Concentrations of air quality parameters such as PM2.5, NO2, SO2, and CO during the transition to lockdown and the actual lockdown period were compared with business as usual periods (a period prior to COVID19 lockdown and a corresponding period in 2019) to estimate the reduction in emission in four major IT hubs in India namely Bengaluru, Chennai, Hyderabad and Pune. A 40-45% reduction in PM2.5 concentration was observed, in these cities, during the lockdown compared to the corresponding period in 2019 and a 20-45% reduction was observed compared to business as usual period in 2020. A vehicle kilometer traveled (VKT)-related questionnaire survey-based study in Hyderabad revealed that, with 48% of population utilizing work-from-home during the transition to lockdown period, vehicular PM2.5 emission in Hyderabad reduced by 54% compared to usual traffic emissions prior to COVID19 lockdown. Furthermore, it was estimated that emission of up to 3243, 777, 113, and 54 tons/year of CO, NOx, PM2.5, and SO2, respectively, could be avoided in Hyderabad alone, if work-from-home is implemented on a 2 days/week basis. The experience from this study can be used to develop policies favoring reduced use of private vehicles or implementation of work-from-home to combat air pollution and reduce carbon emissions.
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Affiliation(s)
- Tejaswini Eregowda
- National Green Tribunal Monitoring Cell, Karnataka State Pollution Control Board, Bengaluru, 560001 India
- Environmental Management and Policy Research Institute, Department of Forest, Ecology & Environment, Government of Karnataka, Bangalore, 560076 India
| | - Pritha Chatterjee
- Department of Civil Engineering, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502285 India
| | - Digvijay S Pawar
- Department of Civil Engineering, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502285 India
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Kohler RE, Roncarati JS, Aguiar A, Chatterjee P, Gaeta J, Viswanath K, Henry C. Trauma and cervical cancer screening among women experiencing homelessness: A call for trauma-informed care. Womens Health (Lond) 2021; 17:17455065211029238. [PMID: 34225506 PMCID: PMC8264729 DOI: 10.1177/17455065211029238] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [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] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 05/28/2021] [Accepted: 06/08/2021] [Indexed: 12/24/2022]
Abstract
OBJECTIVE Women experiencing homelessness are at increased risk of cervical cancer and have disproportionately low Pap screening behaviors compared to the general population. Prevalence of Pap refusals and multiple kinds of trauma, specifically sexual trauma, are high among homeless women. This qualitative study explored how trauma affects Pap screening experiences, behaviors, and provider practices in the context of homelessness. METHODS We conducted 29 in-depth interviews with patients and providers from multiple sites of a Federally Qualified Health Center as part of a study on barriers and facilitators to cervical cancer screening among urban women experiencing homelessness. The Health Belief Model and trauma-informed frameworks guided the analysis. RESULTS Trauma histories were common among the 18 patients we interviewed. Many women also had strong physical and psychological reactions to screening, which influenced current behaviors and future intentions. Although most women had screened at least once in their lifetime, many patients experienced anticipated anxiety and retraumatization which pushed them to delay or refuse Paps. We recruited 11 providers who identified strategies they used to encourage screening, including emphasizing safety and shared decision-making before and during the exam, building strong patient-provider trust and communication, and individually tailoring education and counseling to patients' needs. We outlined suggestions and implications from these findings as trauma-informed cervical cancer screening. CONCLUSION Discomfort with Pap screening was common among women experiencing homelessness, especially those with histories of sexual trauma. Applying a trauma-informed approach to cervical cancer screening may help address complex barriers among women experiencing homelessness, with histories of sexual trauma, or others who avoid, delay, or refuse the exam.
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Affiliation(s)
- Racquel E Kohler
- Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA
- Harvard T.H. Chan School of Public Health, Boston, MA, USA
- Boston Health Care for the Homeless Program, Boston, MA, USA
| | - Jill S Roncarati
- Harvard T.H. Chan School of Public Health, Boston, MA, USA
- Boston Health Care for the Homeless Program, Boston, MA, USA
| | | | - Pritha Chatterjee
- Harvard T.H. Chan School of Public Health, Boston, MA, USA
- Dana-Farber Cancer Institute, Boston, MA, USA
| | - Jessie Gaeta
- Boston Health Care for the Homeless Program, Boston, MA, USA
| | - Kasisomayajula Viswanath
- Harvard T.H. Chan School of Public Health, Boston, MA, USA
- Boston Health Care for the Homeless Program, Boston, MA, USA
| | - Cassis Henry
- Boston Health Care for the Homeless Program, Boston, MA, USA
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26
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Beckerman-Hsu JP, Chatterjee P, Kim R, Sharma S, Subramanian SV. A typology of dietary and anthropometric measures of nutritional need among children across districts and parliamentary constituencies in India, 2016. J Glob Health 2020; 10:020424. [PMID: 33110583 PMCID: PMC7569191 DOI: 10.7189/jogh.10.020424] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Anthropometry is the most commonly used approach for assessing nutritional need among children. Anthropometry alone, however, cannot differentiate between the two immediate causes of undernutrition: inadequate diet vs disease. We present a typology of nutritional need by simultaneously considering dietary and anthropometric measures, dietary and anthropometric failures (DAF), and assess its distribution among children in India. METHODS We used the 2015-16 National Family Health Survey, a nationally representative sample of children aged 6-23 months (n = 67 247), from India. Dietary failure was operationalized using World Health Organization (WHO) standards for minimum dietary diversity. Anthropometric failure was operationalized using WHO child growth reference standard z-score of <-2 for height-for-age (stunting), weight-for-age (underweight) and weight-for-height (wasting). We also created a combined anthropometric measure for children who had any one of these three anthropometric failures. We cross-tabulated dietary and anthropometric failures to produce four combinations: Dietary Failure Only (DFO), Anthropometric Failure Only (AFO), Both Failures (BF), and Neither Failure (NF). We estimated the prevalence and distribution of the four types, nationally, and across 640 administrative districts and 543 Parliamentary Constituencies (PCs) in India. RESULTS Nationally, 80.3% of children had dietary failure and 53.7% had at least one anthropometric failure. The prevalence for the four DAF types was: 44.0% (BF), 36.3% (DFO), 9.8% (AFO), and 9.9% (NF). Dietary and anthropometric measures were discordant for 46.1% of children; these children had nutritional needs identified by only one of the two measures. Nationally, this translates to 12 181 627 children with DFO and 3 281 913 children with AFO; the nutritional needs of these children would not be captured if using only dietary or anthropometric assessment. Substantial variation was observed across districts and PCs for all DAF types. The interquartile ranges for districts were largest for BF (29.8%-53.0%) and lowest for AFO (5.5%-13.4%). CONCLUSIONS The current emphasis on anthropometry for measuring nutritional need should be complemented with diet- and food-based measures. By differentiating inadequate food intake from other causes of undernutrition, the DAF typology brings precision in identifying nutritional needs among children. These insights may improve the development and targeting of nutrition interventions.
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Affiliation(s)
| | - Pritha Chatterjee
- Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Boston Massachusetts, USA
| | - Rockli Kim
- Interdisciplinary Program in Precision Public Health, Department of Public Health Sciences, Graduate School of Korea University, Seoul, Republic of Korea; Department of Public Health Sciences, Graduate School, Korea University, Seoul, South Korea; Harvard Center for Population and Development Studies, Cambridge, Massachusetts, USA
| | | | - S V Subramanian
- Harvard Center for Population and Development Studies, Cambridge, Massachusetts, USA; and Department of Social and Behavioral Sciences, Harvard T. H. Chan School of Public Health, Boston, Massachusetts, USA
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Dessì P, Rovira-Alsina L, Sánchez C, Dinesh GK, Tong W, Chatterjee P, Tedesco M, Farràs P, Hamelers HMV, Puig S. Microbial electrosynthesis: Towards sustainable biorefineries for production of green chemicals from CO 2 emissions. Biotechnol Adv 2020; 46:107675. [PMID: 33276075 DOI: 10.1016/j.biotechadv.2020.107675] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 11/11/2020] [Accepted: 11/25/2020] [Indexed: 01/22/2023]
Abstract
Decarbonisation of the economy has become a priority at the global level, and the resulting legislative pressure is pushing the chemical and energy industries away from fossil fuels. Microbial electrosynthesis (MES) has emerged as a promising technology to promote this transition, which will further benefit from the decreasing cost of renewable energy. However, several technological challenges need to be addressed before the MES technology can reach its maturity. The aim of this review is to critically discuss the bottlenecks hampering the industrial adoption of MES, considering the whole production process (from the CO2 source to the marketable products), and indicate future directions. A flexible stack design, with flat or tubular MES modules and direct CO2 supply, is required for site-specific decentralised applications. The experience gained for scaling-up electrochemical cells (e.g. electrolysers) can serve as a guideline for realising pilot MES stacks to be technologically and economically evaluated in industrially relevant conditions. Maximising CO2 abatement rate by targeting high-rate production of acetate can promote adoption of MES technology in the short term. However, the development of a replicable and robust strategy for production and in-line extraction of higher-value products (e.g. caproic acid and hexanol) at the cathode, and meaningful exploitation of the currently overlooked anodic reactions, can further boost MES cost-effectiveness. Furthermore, the use of energy storage and smart electronics can alleviate the fluctuations of renewable energy supply. Despite the unresolved challenges, the flexible MES technology can be applied to decarbonise flue gas from different sources, to upgrade industrial and wastewater treatment plants, and to produce a wide array of green and sustainable chemicals. The combination of these benefits can support the industrial adoption of MES over competing technologies.
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Affiliation(s)
- Paolo Dessì
- School of Chemistry and Energy Research Centre, Ryan Institute, National University of Ireland Galway, University Road, H91 TK33 Galway, Ireland.
| | - Laura Rovira-Alsina
- LEQUiA, Institute of the Environment, University of Girona. Campus Montilivi, Carrer Maria Aurèlia Capmany 69, E-17003, Girona, Spain
| | - Carlos Sánchez
- Microbiology Department, School of Natural Sciences and Ryan Institute, National University of Ireland Galway, University Road, H91 TK33, Galway, Ireland
| | - G Kumaravel Dinesh
- School of Chemistry and Energy Research Centre, Ryan Institute, National University of Ireland Galway, University Road, H91 TK33 Galway, Ireland
| | - Wenming Tong
- School of Chemistry and Energy Research Centre, Ryan Institute, National University of Ireland Galway, University Road, H91 TK33 Galway, Ireland
| | - Pritha Chatterjee
- Department of Civil Engineering, Indian Institute of Technology, Hyderabad, India
| | - Michele Tedesco
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, 8911, MA, Leeuwarden, The Netherlands
| | - Pau Farràs
- School of Chemistry and Energy Research Centre, Ryan Institute, National University of Ireland Galway, University Road, H91 TK33 Galway, Ireland
| | - Hubertus M V Hamelers
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, 8911, MA, Leeuwarden, The Netherlands
| | - Sebastià Puig
- LEQUiA, Institute of the Environment, University of Girona. Campus Montilivi, Carrer Maria Aurèlia Capmany 69, E-17003, Girona, Spain
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Subramanian SV, Chatterjee P, Karlsson O. Lessons from COVID-19 pandemic for the child survival agenda. J Glob Health 2020; 10:020357. [PMID: 33110553 PMCID: PMC7563089 DOI: 10.7189/jogh.10.020357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- S V Subramanian
- Harvard Center for Population and Development Studies, Cambridge, Massachusetts, USA
- Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Pritha Chatterjee
- Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Omar Karlsson
- Takemi Program in International Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
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Shawki A, Ramirez R, Spalinger MR, Ruegger PM, Sayoc-Becerra A, Santos AN, Chatterjee P, Canale V, Mitchell JD, Macbeth JC, Gries CM, Tremblay ML, Hsiao A, Borneman J, McCole DF. The autoimmune susceptibility gene, PTPN2, restricts expansion of a novel mouse adherent-invasive E. coli. Gut Microbes 2020; 11:1547-1566. [PMID: 32586195 PMCID: PMC7524159 DOI: 10.1080/19490976.2020.1775538] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 04/30/2020] [Accepted: 05/18/2020] [Indexed: 02/06/2023] Open
Abstract
Inflammatory bowel disease (IBD) pathogenesis involves significant contributions from genetic and environmental factors. Loss-of-function single-nucleotide polymorphisms (SNPs) in the protein tyrosine phosphatase non-receptor type 2 (PTPN2) gene increase IBD risk and are associated with altered microbiome population dynamics in IBD. Expansion of intestinal pathobionts, such as adherent-invasive E. coli (AIEC), is strongly implicated in IBD pathogenesis as AIEC increases pro-inflammatory cytokine production and alters tight junction protein regulation - suggesting a potential mechanism of pathogen-induced barrier dysfunction and inflammation. We aimed to determine if PTPN2 deficiency alters intestinal microbiome composition to promote expansion of specific bacteria with pathogenic properties. In mice constitutively lacking Ptpn2, we identified increased abundance of a novel mouse AIEC (mAIEC) that showed similar adherence and invasion of intestinal epithelial cells, but greater survival in macrophages, to the IBD-associated AIEC, LF82. Furthermore, mAIEC caused disease when administered to mice lacking segmented-filamentous bacteria (SFB), and in germ-free mice but only when reconstituted with a microbiome, thus supporting its classification as a pathobiont, not a pathogen. Moreover, mAIEC infection increased the severity of, and prevented recovery from, induced colitis. Although mAIEC genome sequence analysis showed >90% similarity to LF82, mAIEC contained putative virulence genes with >50% difference in gene/protein identities from LF82 indicating potentially distinct genetic features of mAIEC. We show for the first time that an IBD susceptibility gene, PTPN2, modulates the gut microbiome to protect against a novel pathobiont. This study generates new insights into gene-environment-microbiome interactions in IBD and identifies a new model to study AIEC-host interactions.
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Affiliation(s)
- Ali Shawki
- Division of Biomedical Sciences, University of California Riverside, Riverside, California, USA
| | - Rocio Ramirez
- Division of Biomedical Sciences, University of California Riverside, Riverside, California, USA
| | - Marianne R. Spalinger
- Division of Biomedical Sciences, University of California Riverside, Riverside, California, USA
| | - Paul M. Ruegger
- Department of Microbiology and Plant Pathology, University of California Riverside, Riverside, California, USA
| | - Anica Sayoc-Becerra
- Division of Biomedical Sciences, University of California Riverside, Riverside, California, USA
| | - Alina N. Santos
- Division of Biomedical Sciences, University of California Riverside, Riverside, California, USA
| | - Pritha Chatterjee
- Division of Biomedical Sciences, University of California Riverside, Riverside, California, USA
| | - Vinicius Canale
- Division of Biomedical Sciences, University of California Riverside, Riverside, California, USA
| | - Jonathan D. Mitchell
- Department of Microbiology and Plant Pathology, University of California Riverside, Riverside, California, USA
| | - John C. Macbeth
- Department of Microbiology and Plant Pathology, University of California Riverside, Riverside, California, USA
| | - Casey M. Gries
- Division of Biomedical Sciences, University of California Riverside, Riverside, California, USA
| | | | - Ansel Hsiao
- Department of Microbiology and Plant Pathology, University of California Riverside, Riverside, California, USA
| | - James Borneman
- Department of Microbiology and Plant Pathology, University of California Riverside, Riverside, California, USA
| | - Declan F. McCole
- Division of Biomedical Sciences, University of California Riverside, Riverside, California, USA
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Sarkar B, Munshi A, Shahid T, Ganesh T, Mohanti B, Bansal K, Rastogi K, Chaudhari B, Manikandan A, Biswal S, Bhattacharya J, Ghosh T, De A, Roy Chowdhury S, Mandal S, George K, Mukherjee M, Gazi M, Chauhan R, Chatterjee P. Challenges Faced by Woman Radiation Oncologists (WRO) in South Asia. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.2538] [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: 11/15/2022]
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31
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Chatterjee P, Spalinger M, Gries C, Shawki A, Borneman J, McCole D. The IBD candidate gene,
PTPN2
, Restricts Epithelial and Macrophage Invasion of a Novel Reporter Adherent‐Invasive
Escherichia coli. FASEB J 2020. [DOI: 10.1096/fasebj.2020.34.s1.07148] [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: 11/11/2022]
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Dessì P, Chatterjee P, Mills S, Kokko M, Lakaniemi AM, Collins G, Lens PNL. Power production and microbial community composition in thermophilic acetate-fed up-flow and flow-through microbial fuel cells. Bioresour Technol 2019; 294:122115. [PMID: 31541978 DOI: 10.1016/j.biortech.2019.122115] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 08/31/2019] [Accepted: 09/03/2019] [Indexed: 06/10/2023]
Abstract
The microbial communities developed from a mixed-species culture in up-flow and flow-through configurations of thermophilic (55 °C) microbial fuel cells (MFCs), and their power production from acetate, were investigated. The up-flow MFC was operated for 202 days, obtaining an average power density of 0.13 W/m3, and Tepidiphilus was the dominant transcriptionally-active microorganisms. The planktonic community developed in the up-flow MFC was used to inoculate a flow-through MFC resulting in the proliferation of Ureibacillus, whose relative abundance increased from 1 to 61% after 45 days. Despite the differences between the up-flow and flow-through MFCs, including the anode electrode, hydrodynamic conditions, and the predominant microorganism, similar (p = 0.05) volumetric power (0.11-0.13 W/m3), coulombic efficiency (16-18%) and acetate consumption rates (55-69 mg/L/d) were obtained from both. This suggests that though MFC design can shape the active component of the thermophilic microbial community, the consortia are resilient and can maintain similar performance in different MFC configurations.
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Affiliation(s)
- Paolo Dessì
- Tampere University, Faculty of Engineering and Natural Sciences, P.O. Box 541, FI-33104 Tampere University, Finland; National University of Ireland Galway, University Road, Galway H91 TK33, Ireland.
| | - Pritha Chatterjee
- Tampere University, Faculty of Engineering and Natural Sciences, P.O. Box 541, FI-33104 Tampere University, Finland; Department of Civil Engineering, Indian Institute of Technology Hyderabad, India
| | - Simon Mills
- Microbial Communities Laboratory, School of Natural Sciences, National University of Ireland Galway, University Road, Galway H91 TK33, Ireland
| | - Marika Kokko
- Tampere University, Faculty of Engineering and Natural Sciences, P.O. Box 541, FI-33104 Tampere University, Finland
| | - Aino-Maija Lakaniemi
- Tampere University, Faculty of Engineering and Natural Sciences, P.O. Box 541, FI-33104 Tampere University, Finland
| | - Gavin Collins
- Microbial Communities Laboratory, School of Natural Sciences, National University of Ireland Galway, University Road, Galway H91 TK33, Ireland
| | - Piet N L Lens
- Tampere University, Faculty of Engineering and Natural Sciences, P.O. Box 541, FI-33104 Tampere University, Finland; National University of Ireland Galway, University Road, Galway H91 TK33, Ireland
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33
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Kohler RE, Elliott T, Monare B, Moshashane N, Ramontshonyana K, Chatterjee P, Ramogola-Masire D, Morroni C. HPV self-sampling acceptability and preferences among women living with HIV in Botswana. Int J Gynaecol Obstet 2019; 147:332-338. [PMID: 31489627 DOI: 10.1002/ijgo.12963] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [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: 02/03/2019] [Revised: 06/24/2019] [Accepted: 09/03/2019] [Indexed: 12/20/2022]
Abstract
OBJECTIVE To assess the acceptability and preferences of HPV screening with self-sampling and mobile phone results delivery among women living with HIV (WLWH) in Botswana, as an alternative to traditional speculum screening. METHODS WLWH aged 25 years or older attending an infectious disease clinic in Gaborone were enrolled in a cross-sectional study between March and April 2017. Women self-sampled with a flocked swab, had a speculum exam, and completed an interviewer-administered questionnaire about screening acceptability, experiences, and preferences. RESULTS Of the 104 WLWH recruited, 98 (94%) had a history of traditional screening. Over 90% agreed self-sampling was easy and comfortable. Ninety-five percent were willing to self-sample again; however, only 19% preferred self-sampling over speculum exam for future screening. Preferences differed by education and residence with self-sampling being considered more convenient, easier, less embarrassing, and less painful. Speculum exams were preferred because of trust in providers' skills and women's low self-efficacy to sample correctly. Almost half (47%) preferred to receive results via mobile phone call. Knowledge of cervical cancer did not affect preferences. CONCLUSION HPV self-sampling is acceptable among WLWH in Botswana; however, preferences vary. Although self-sampling is an important alternative to traditional speculum screening, education and support will be critical to address women's low self-efficacy to self-sample correctly.
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Affiliation(s)
- Racquel E Kohler
- Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Boston, MA, USA.,Botswana Harvard AIDS Institute Partnership, Gaborone, Botswana
| | | | | | | | | | - Pritha Chatterjee
- Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Doreen Ramogola-Masire
- Botswana UPenn Partnership, Gaborone, Botswana.,Department of Obstetrics and Gynaecology, Faculty of Medicine, University of Botswana, Gaborone, Botswana
| | - Chelsea Morroni
- Botswana Harvard AIDS Institute Partnership, Gaborone, Botswana.,Botswana UPenn Partnership, Gaborone, Botswana.,International Sexual and Reproductive Health, Liverpool School of Tropical Medicine, Liverpool, UK
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Chatterjee P, Granatier M, Ramasamy P, Kokko M, Lakaniemi AM, Rintala J. Microalgae grow on source separated human urine in Nordic climate: Outdoor pilot-scale cultivation. J Environ Manage 2019; 237:119-127. [PMID: 30784859 DOI: 10.1016/j.jenvman.2019.02.074] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 01/18/2019] [Accepted: 02/15/2019] [Indexed: 06/09/2023]
Abstract
Human urine contributes approximately 80% of nitrogen and 50% of phosphorous in urban wastewaters while having a volume of only 1-1.5 L/d per capita compared to 150-200 L/d per capita of wastewater generated. There is interest to study source separation of urine and search methods to recover the nutrients form the urine. In this study, the objective was to use the nutrients in source separated urine for outdoor cultivation of microalgae in Nordic climate. A freshwater green microalga Scenedesmus acuminatus was grown in different dilutions (1:20 and 1:15) of source separated human urine, in a semi-continuously operated outdoor raceway pond with a liquid volume of 2000 L, at hydraulic retention time of 15 d. The microalgae could remove 52% nitrogen and 38% phosphorus even at culture temperatures as low as 5 °C, while obtaining a biomass density of 0.34 g VSS/L. Harvested microalgal biomass could be used to produce methane with a yield of 285 L CH4/kg volatile solids.
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Affiliation(s)
- Pritha Chatterjee
- Faculty of Engineering and Natural Sciences, Tampere University, Finland.
| | - Marianna Granatier
- Faculty of Engineering and Natural Sciences, Tampere University, Finland
| | - Praveen Ramasamy
- Faculty of Engineering and Natural Sciences, Tampere University, Finland
| | - Marika Kokko
- Faculty of Engineering and Natural Sciences, Tampere University, Finland
| | | | - Jukka Rintala
- Faculty of Engineering and Natural Sciences, Tampere University, Finland
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Bhattacharya J, Mukherjee M, Kumar K V, Rajan R, Shahid T, Goswami S, Naha Biswas L, Chatterjee P, Saha S. EP-1180 Re-radiation in head and neck malignancies: experience from a tertiary care centre in eastern india. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)31600-7] [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: 10/26/2022]
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Prakash A, Jaiswal A, Mittal S, Chatterjee P, Kotalwar S, Datta B. Barber′s neck manipulation causing bilateral diaphragmatic paralysis and type-2 respiratory failure. Lung India 2019. [DOI: 10.4103/0970-2113.257713] [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] Open
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Chatterjee P, Lahtinen L, Kokko M, Rintala J. Remediation of sedimented fiber originating from pulp and paper industry: Laboratory scale anaerobic reactor studies and ideas of scaling up. Water Res 2018; 143:209-217. [PMID: 29960175 DOI: 10.1016/j.watres.2018.06.054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 03/16/2018] [Revised: 06/06/2018] [Accepted: 06/22/2018] [Indexed: 06/08/2023]
Abstract
Anaerobic treatment of sedimented fibers collected from bottom of a bay that had been receiving pulp and paper mill wastewater for about 70 years were studied for the first time in semi-continuously fed continuously stirred tank reactors (CSTR). Anaerobic treatment of the fiber sediment was shown to be feasible, without dilution and with nitrogen and buffer supplement, at organic loading rates (OLR) up to 2.5 kg VS/m3d and hydraulic retention times (HRT) of 60 d resulting in methane yields of 201 ± 18 L CH4/kg VS. Co-digestion of sedimented fiber with sewage sludge at an OLR of 1.5 kg VS/m3d and HRT of 20 d resulted in a methane production of 246 ± 10 L CH4/kg VS. The techno-economic feasibility of mono and co-digestion process together with several case dependent factors such as maximum operable OLR, digestate utilization needs to be evaluated before making further conclusions for larger scale remediation applications.
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Affiliation(s)
- Pritha Chatterjee
- Laboratory of Chemistry and Bioengineering, Tampere University of Technology, P.O. Box 541, FIN-3310, Tampere, Finland.
| | - Leija Lahtinen
- Laboratory of Chemistry and Bioengineering, Tampere University of Technology, P.O. Box 541, FIN-3310, Tampere, Finland; Finnish Consulting Group (FCG Suunnittelu ja tekniikka Oy), P.O. Box 950, FIN-00601, Helsinki, Finland
| | - Marika Kokko
- Laboratory of Chemistry and Bioengineering, Tampere University of Technology, P.O. Box 541, FIN-3310, Tampere, Finland
| | - Jukka Rintala
- Laboratory of Chemistry and Bioengineering, Tampere University of Technology, P.O. Box 541, FIN-3310, Tampere, Finland
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Goozee K, Chatterjee P, James I, Shen K, Sohrabi HR, Asih PR, Dave P, ManYan C, Taddei K, Ayton SJ, Garg ML, Kwok JB, Bush AI, Chung R, Magnussen JS, Martins RN. Elevated plasma ferritin in elderly individuals with high neocortical amyloid-β load. Mol Psychiatry 2018; 23:1807-1812. [PMID: 28696433 DOI: 10.1038/mp.2017.146] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 05/14/2017] [Accepted: 05/26/2017] [Indexed: 12/14/2022]
Abstract
Ferritin, an iron storage and regulation protein, has been associated with Alzheimer's disease (AD); however, it has not been investigated in preclinical AD, detected by neocortical amyloid-β load (NAL), before cognitive impairment. Cross-sectional analyses were carried out for plasma and serum ferritin in participants in the Kerr Anglican Retirement Village Initiative in Aging Health cohort. Subjects were aged 65-90 years and were categorized into high and low NAL groups via positron emission tomography using a standard uptake value ratio cutoff=1.35. Ferritin was significantly elevated in participants with high NAL compared with those with low NAL, adjusted for covariates age, sex, apolipoprotein E ɛ4 carriage and levels of C-reactive protein (an inflammation marker). Ferritin was also observed to correlate positively with NAL. A receiver operating characteristic curve based on a logistic regression of the same covariates, the base model, distinguished high from low NAL (area under the curve (AUC)=0.766), but was outperformed when plasma ferritin was added to the base model (AUC=0.810), such that at 75% sensitivity, the specificity increased from 62 to 71% on adding ferritin to the base model, indicating that ferritin is a statistically significant additional predictor of NAL over and above the base model. However, ferritin's contribution alone is relatively minor compared with the base model. The current findings suggest that impaired iron mobilization is an early event in AD pathogenesis. Observations from the present study highlight ferritin's potential to contribute to a blood biomarker panel for preclinical AD.
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Affiliation(s)
- K Goozee
- Department of Biomedical Sciences, Macquarie University, Sydney, NSW, Australia.,Anglicare, Sydney, NSW, Australia.,School of Psychiatry and Clinical Neurosciences, University of Western Australia, Perth, WA, Australia.,School of Medical Health and Sciences, Edith Cowan University, Perth, WA, Australia.,McCusker Alzheimer Research Foundation, Perth, WA, Australia.,KaRa Institute of Neurological Disease, Sydney, NSW, Australia.,The Cooperative Research Centre for Mental Health, Carlton, VIC, Australia
| | - P Chatterjee
- Department of Biomedical Sciences, Macquarie University, Sydney, NSW, Australia.,School of Medical Health and Sciences, Edith Cowan University, Perth, WA, Australia.,KaRa Institute of Neurological Disease, Sydney, NSW, Australia
| | - I James
- Institute for Immunology and Infectious Diseases, Murdoch University, Perth, WA, Australia
| | - K Shen
- Australian eHealth Research Centre, CSIRO, Floreat, WA, Australia
| | - H R Sohrabi
- Department of Biomedical Sciences, Macquarie University, Sydney, NSW, Australia.,School of Medical Health and Sciences, Edith Cowan University, Perth, WA, Australia.,McCusker Alzheimer Research Foundation, Perth, WA, Australia.,The Cooperative Research Centre for Mental Health, Carlton, VIC, Australia
| | - P R Asih
- KaRa Institute of Neurological Disease, Sydney, NSW, Australia.,School of Medical Sciences, University of New South Wales, Sydney, NSW, Australia
| | - P Dave
- Department of Biomedical Sciences, Macquarie University, Sydney, NSW, Australia.,Anglicare, Sydney, NSW, Australia
| | - C ManYan
- Anglicare, Sydney, NSW, Australia
| | - K Taddei
- School of Medical Health and Sciences, Edith Cowan University, Perth, WA, Australia.,McCusker Alzheimer Research Foundation, Perth, WA, Australia
| | - S J Ayton
- Florey Department of Neuroscience and Mental Health, University of Melbourne University, Melbourne, VIC, Australia
| | - M L Garg
- Nutraceuticals Research Program, School of Biomedical Sciences and Pharmacy, University of Newcastle, Callaghan, NSW, Australia
| | - J B Kwok
- School of Medical Sciences, University of New South Wales, Sydney, NSW, Australia.,Neuroscience Research Australia, Sydney, NSW, Australia
| | - A I Bush
- The Cooperative Research Centre for Mental Health, Carlton, VIC, Australia.,Florey Department of Neuroscience and Mental Health, University of Melbourne University, Melbourne, VIC, Australia
| | - R Chung
- Department of Biomedical Sciences, Macquarie University, Sydney, NSW, Australia
| | - J S Magnussen
- Department of Clinical Medicine, Macquarie University, Sydney, NSW, Australia
| | - R N Martins
- Department of Biomedical Sciences, Macquarie University, Sydney, NSW, Australia. .,School of Psychiatry and Clinical Neurosciences, University of Western Australia, Perth, WA, Australia. .,School of Medical Health and Sciences, Edith Cowan University, Perth, WA, Australia. .,McCusker Alzheimer Research Foundation, Perth, WA, Australia. .,KaRa Institute of Neurological Disease, Sydney, NSW, Australia. .,The Cooperative Research Centre for Mental Health, Carlton, VIC, Australia.
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Prakash AK, Datta B, Tripathy JP, Kumar N, Chatterjee P, Jaiswal A. The clinical utility of cycle of threshold value of GeneXpert MTB/RIF (CBNAAT) and its diagnostic accuracy in pulmonary and extra-pulmonary samples at a tertiary care center in India. Indian J Tuberc 2018; 65:296-302. [PMID: 30522616 DOI: 10.1016/j.ijtb.2018.05.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 05/23/2018] [Accepted: 05/24/2018] [Indexed: 12/19/2022]
Abstract
BACKGROUND There are knowledge gaps in the in-depth analysis of the most promising and robust diagnostic tool, GeneXpert MTB/RIF (CBNAAT). The cycle of threshold (CT) value of the CBNAAT test and its clinical implications has not been explored much. AIMS AND OBJECTIVES The study aimed at (a) estimating the diagnostic accuracy and incremental yield of Xpert MTB/RIF in various specimens (b) establishing the association between CT value category (high, medium, low, very low) and culture time-to-positivity (TTP). METHODS A total of 1000 samples, both pulmonary and extra-pulmonary were collected from presumptive TB cases in a large tertiary care hospital. Sensitivity and specificity of CBNAAT was calculated with culture as the gold standard. The association of CT value with culture TTP was also studied. RESULTS The overall sensitivity of CBNAAT was 88.5%, with bronchial washing specimen being the most sensitive (92.3%) and pleural fluid being the least (66.7%). In smear negative individuals, the sensitivity of CBNAAT was 80.9%. The additional yield of CBNAAT over smear microscopy was 10.9%. It was observed that as we move from high to very low CT category, culture positivity decreases significantly (p<0.001), whereas time taken for culture growth increases (p<0.001). CONCLUSION CBNAAT is a robust test for accurate diagnosis of tuberculosis both pulmonary and extra-pulmonary, smear negative as well, especially in resource-limited settings. The correlation between CT value and culture TTP has potential in predicting bacillary load, though further studies are required.
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Affiliation(s)
- Ashish K Prakash
- Department of Respiratory & Sleep Medicine, Medanta - The Medicity Gurgaon, India.
| | - B Datta
- Department of Respiratory & Sleep Medicine, Medanta - The Medicity Gurgaon, India
| | - J P Tripathy
- International Union Against Tuberculosis and Lung Disease, The Union South East Asia Office, New Delhi, India
| | - N Kumar
- Department of Microbiology, Medanta - The Medicity Gurgaon, India
| | - P Chatterjee
- Department of Respiratory & Sleep Medicine, Medanta - The Medicity Gurgaon, India
| | - A Jaiswal
- Department of Respiratory & Sleep Medicine, Medanta - The Medicity Gurgaon, India
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Das S, Chatterjee P, Ghangrekar MM. Increasing methane content in biogas and simultaneous value added product recovery using microbial electrosynthesis. Water Science and Technology 2018. [PMID: 29528317 DOI: 10.2166/wst.2018.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Abstract
Electrosynthesis of multi-carbon compounds from the carbon dioxide present in biogas is a nascent approach towards purification of biogas. Microbial electrosynthesis (MES) cells, fabricated using different electrode materials, were operated using different electrolytes and mixed anaerobic culture as biocatalysts in the cathodic chamber under an applied cathode potential of −0.7 V vs standard hydrogen electrode (SHE). The rate of production of acetate, isobutyrate, propionate and 2-piperidinone from reduction of CO2 in the cathodic chamber of the MES was 0.81 mM/day, 0.63 mM/day, 0.44 mM/day and 0.53 mM/day, respectively. As methane was also present in the biogas, methyl derivatives of these acids were also found in traces in catholyte. It was observed that the use of nickel foam as an anode, 1 M NiSO4 solution as anolyte, graphite felt as a cathode, phosphate buffer solution as catholyte at a pH of 5.2 proved to be the best possible combination for MES for this study to get enhanced product yield at higher energy efficiency.
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Affiliation(s)
- Sovik Das
- Department of Civil Engineering, Indian Institute of Technology, Kharagpur 721302, India
| | - Pritha Chatterjee
- Department of Civil Engineering, Indian Institute of Technology, Kharagpur 721302, India
| | - M. M. Ghangrekar
- Department of Civil Engineering, Indian Institute of Technology, Kharagpur 721302, India
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Affiliation(s)
| | - Pritha Chatterjee
- Department of Civil Engineering, Indian Institute of Technology, Kharagpur - 721302. India
| | - Donal Leech
- Department of Civil Engineering, Indian Institute of Technology, Kharagpur - 721302. India
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Akpoveso OO, Olivier G, Chatterjee P, Olajide O, Tumbas Šaponjac V. Investigation of potential anti-diabetic effect of Mucuna pruriens (L) DC (Fabaceae) aqueous leaf extract. Am J Transl Res 2017. [DOI: 10.1055/s-0037-1608397] [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: 10/18/2022]
Affiliation(s)
- OO Akpoveso
- University of Brighton, Brighton, United Kingdom
| | - G Olivier
- University of Brighton, Brighton, United Kingdom
| | - P Chatterjee
- University of Brighton, Brighton, United Kingdom
| | - O Olajide
- University of Huddersfield, Huddersfield, United Kingdom
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Chatterjee P, Ghangrekar MM. Biomass granulation in an upflow anaerobic sludge blanket reactor treating 500 m 3/day low-strength sewage and post treatment in high-rate algal pond. Water Sci Technol 2017; 76:1234-1242. [PMID: 28876265 DOI: 10.2166/wst.2017.269] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A pilot-scale upflow anaerobic sludge blanket-moving bed biofilm (UASB-MBB) reactor followed by a high-rate algal pond (HRAP) was designed and operated to remove organic matter, nutrients and pathogens from sewage and to facilitate reuse. For an influent chemical oxygen demand (COD) concentration of 233 ± 20 mg/L, final effluent COD was 50 ± 6 mg/L. Successful biomass granulation was observed in the sludge bed of the upflow anaerobic sludge blanket (UASB) reactor after 5 months of operation. Ammonia removal in HRAP was 85.1 ± 2.4% with average influent and effluent ammonia nitrogen concentrations of 20 ± 3 mg/L and 3 ± 1 mg/L, respectively. Phosphate removal after treatment in the HRAP was 91 ± 1%. There was a 2-3 log scale pathogen removal after treatment in HRAP with most probable number (MPN) of the final effluent being 600-800 per 100 mL, which is within acceptable standards for surface irrigation. The blackwater after treatment in UASB-MBBR-HRAP is being reused for gardening and landscaping. This proper hydro-dynamically designed UASB reactor demonstrated successful granulation and moving bed media improved sludge retention in UASB reactor. This combination of UASB-MBB reactor followed by HRAP demonstrated successful sewage treatment for a year covering all seasons.
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Affiliation(s)
- Pritha Chatterjee
- Department of Civil Engineering, Indian Institute of Technology, Kharagpur 721302, India E-mail:
| | - M M Ghangrekar
- Department of Civil Engineering, Indian Institute of Technology, Kharagpur 721302, India E-mail:
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Singh H, Chatterjee P, Narang R, Dey A. GERIATRIC SYNDROMES WITH HEART FAILURE, CROSS-SECTIONAL STUDY WITH IMPLICATION IN CLINICAL PRACTICE. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.2821] [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: 11/13/2022] Open
Affiliation(s)
- H. Singh
- ALL INDIA INSTITUTE OF MEDICAL SCIENCES, NEW DELHI, NEW DELHI, India,
| | - P. Chatterjee
- ALL INDIA INSTITUTE OF MEDICAL SCIENCES, NEW DELHI, NEW DELHI, India,
| | - R. Narang
- CARDIOLOGY, ALL INDIA INSTITUTE OF MEDICAL SCIENCES, NEW DELHI, NEW DELHI, India
| | - A. Dey
- ALL INDIA INSTITUTE OF MEDICAL SCIENCES, NEW DELHI, NEW DELHI, India,
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Prem N, Chatterjee P, Chakrawarty A, Dey A. URINARY INCONTINENCE AMONG OLDER INDIANS: ASSESSMENT AND IMPACT ON QUALITY OF LIFE. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.2150] [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: 11/14/2022] Open
Affiliation(s)
- N.N. Prem
- Geriatric Medicine, All India Insititute of Medical Sciences, New Delhi, Delhi, India
| | - P. Chatterjee
- Geriatric Medicine, All India Insititute of Medical Sciences, New Delhi, Delhi, India
| | - A. Chakrawarty
- Geriatric Medicine, All India Insititute of Medical Sciences, New Delhi, Delhi, India
| | - A.B. Dey
- Geriatric Medicine, All India Insititute of Medical Sciences, New Delhi, Delhi, India
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Subramanian M, Chatterjee P, Chakrawarty A, Dey A. A STUDY OF GAIT AND FALLS IN OLDER INDIANS. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.4025] [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: 11/12/2022] Open
Affiliation(s)
- M. Subramanian
- Geriatric Medicine, All India Institute of Medical Sciences, New Delhi, New Delhi., New Delhi, India
| | - P. Chatterjee
- Geriatric Medicine, All India Institute of Medical Sciences, New Delhi, New Delhi., New Delhi, India
| | - A. Chakrawarty
- Geriatric Medicine, All India Institute of Medical Sciences, New Delhi, New Delhi., New Delhi, India
| | - A.B. Dey
- Geriatric Medicine, All India Institute of Medical Sciences, New Delhi, New Delhi., New Delhi, India
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Affiliation(s)
- H. Indani
- Geriatric Medicine, All India Institute of Medical Sciences, Delhi, Delhi, India
| | - R. Bansal
- Geriatric Medicine, All India Institute of Medical Sciences, Delhi, Delhi, India
| | - P. Chatterjee
- Geriatric Medicine, All India Institute of Medical Sciences, Delhi, Delhi, India
| | - A. Chakrawarty
- Geriatric Medicine, All India Institute of Medical Sciences, Delhi, Delhi, India
| | - S. Dwivedi
- Geriatric Medicine, All India Institute of Medical Sciences, Delhi, Delhi, India
| | - A.B. Dey
- Geriatric Medicine, All India Institute of Medical Sciences, Delhi, Delhi, India
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Gunasekaran V, Mundada P, Chatterjee P, Chakrawarty A, Sharma S, Bharti B, Dhiman K, Dey A. AYUSH RASAYANA IMPROVES FITNESS AND QUALITY OF LIFE IN OLDER ADULTS. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.1971] [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: 11/14/2022] Open
Affiliation(s)
- V. Gunasekaran
- Geriatric Medicine, All India Institute of Medical Sciences, New Delhi, India,
| | - P. Mundada
- Geriatric Medicine, All India Institute of Medical Sciences, New Delhi, India,
| | - P. Chatterjee
- Geriatric Medicine, All India Institute of Medical Sciences, New Delhi, India,
| | - A. Chakrawarty
- Geriatric Medicine, All India Institute of Medical Sciences, New Delhi, India,
| | - S. Sharma
- Central Council for Research in Ayurvedic Sciences, New Delhi, New Delhi, India
| | - B. Bharti
- Central Council for Research in Ayurvedic Sciences, New Delhi, New Delhi, India
| | - K. Dhiman
- Central Council for Research in Ayurvedic Sciences, New Delhi, New Delhi, India
| | - A.B. Dey
- Geriatric Medicine, All India Institute of Medical Sciences, New Delhi, India,
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