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Utalo D, Israel E, Lenjebo TL, Aynalem A, Darebo TD. Determinants of respectful maternity care among women who gave childbirth in Southern Ethiopia. BMC Health Serv Res 2024; 24:451. [PMID: 38600494 PMCID: PMC11007911 DOI: 10.1186/s12913-024-10813-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Accepted: 03/01/2024] [Indexed: 04/12/2024] Open
Abstract
BACKGROUND Having a good provision of respectful maternity care (RMC) to a woman who gives childbirth is a crucial component of maternal health care to result in positive maternal and neonatal outcomes. Disrespect and lack of women-centered care in birth discourage a woman from seeking healthcare during childbirth contributing to poor healthcare-seeking behaviour and dissatisfaction with the maternity service. The current study aimed to assess key determinants of RMC during childbirth at selected public health facilities of the Gofa zone, Southern Ethiopia. METHODS A cross-sectional study design was conducted from March to April 2021 among 390 women who gave birth in eight randomly selected public health facilities of Gofa zone, Southern Ethiopia. The level of RMC was measured using structured exit interview items. A structured-interviewer-administered questionnaire was used to collect data and then entered into Epi-data version 4.6 and exported to SPSS version 25 for further analysis. Bivariate and multivariate logistic regression analyses were used to identify determinants of RMC among women. RESULTS A total of 390 women responded to the exit interview making a response rate of 100%. The mean (± SD) age of the 390 women was 27.9 (± 4.85) years. The overall prevalence of women who received RMC was 40.5%, 95% CI (36-45%). Two hundred and ninety-seven (76.2%; n = 297/390) women had antenatal care (ANC) attendance in the index pregnancy. A woman who had planned pregnancy (AOR = 1.72, CI: 1.04, 2.85), planned to deliver in a health facility (AOR = 1.68, CI: 1.00, 2.81), presence of familial support (AOR = 2.04, CI: 1.20, 3.48), and had information about service availability (AOR = 4.44, CI: 2.09, 9.42) were associated with RMC among women. CONCLUSION The provision of respectful maternity care in the study area was low when compared with local studies. Planned pregnancy, plan to deliver in a health facility, family support, and presence of information about service availability were factors associated with RMC among women. More attention should be given to training and supportive supervision of health care professionals on respectful maternity care and its standards to increase service uptake and make service more women-centred.
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Affiliation(s)
- Dawit Utalo
- Departement of Public Health, Consortium Project at Women Empowerment-Amref Health Africa, Wolaita Sodo, Ethiopia
| | - Eskinder Israel
- School of Public Health, College of Health Science and Medicine, Wolaita Sodo University, Wolaita Sodo, Ethiopia.
| | - Tsegaye Lolaso Lenjebo
- School of Public Health, College of Health Science and Medicine, Wolaita Sodo University, Wolaita Sodo, Ethiopia
| | - Amdehiwot Aynalem
- School of Nursing, College of Medicine and Health Science, Hawassa University, Hawassa, Ethiopia
| | - Tadele Dana Darebo
- School of Public Health, College of Health Science and Medicine, Wolaita Sodo University, Wolaita Sodo, Ethiopia
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Dasari P, Sastry JG, Thulasingam M, Fisher J, Chandrasekaran N. Determinants of respectful maternity care at a tertiary care teaching institute in South India: A mixed-methods study. Int J Gynaecol Obstet 2024; 164:721-731. [PMID: 37589210 DOI: 10.1002/ijgo.15034] [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] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 07/16/2023] [Accepted: 07/25/2023] [Indexed: 08/18/2023]
Abstract
OBJECTIVE To determine the proportion of women who experienced disrespect and abuse (D&A) and the type of D&A during labor and postpartum, and to determine the factors significantly associated with D&A. METHODS A cross-sectional mixed-methods study undertaken in tertiary care teaching institute South India. After ethical approval, 380 postpartum women within 72 h of delivery were recruited for the study. The determinants of respectful maternity care (RMC) were assessed quantitatively and qualitatively. For quantitative assessment, they were interviewed using questionnaires adopted from the United States Agency for International Development- Maternal and Child Health Integrated Program (USAID-MCHIP) protocol, which has verification criteria for RMC. As a second method for quantitative assessment, they were asked to rate the care from their perspective on a 10-point score. For the qualitative component, they were asked to identify the healthcare workers associated with D&A by their designation and to answer three open-ended questions. IBM SPSS Statistics 25 (IBM Corporation, Statistical Package for Social Sciences, version 25) was used for analysis. D&A as per RMC standards I-VII and its severity were expressed as frequencies and percentages with 95% confidence interval. Univariate analysis was used to determine the associated factors, and severity was determined by χ2 test. RESULTS The prevalence of D&A was high (85%) according to the RMC standards of the USAID-MCHIP questionnaire, whereas it was only 33% according to women's perspective. The most common type of D&A was non-dignified care. The factors significantly associated with D&A were women over 25 years, those admitted as an emergency referral, having a recommendation letter, and relatives working at the same healthcare facility. CONCLUSION The prevalence of D&A was high as measured by the USAID-MCHIP questionnaire, and the most common type was non-dignified care followed by physical abuse.
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Affiliation(s)
- Papa Dasari
- Department of Obstetrics & Gynaecology, JIPMER, Puducherry, India
| | - Jaya Gowri Sastry
- Global and Women's Health, Public Health and Preventive Medicine, Monash University, Melbourne, Victoria, Australia
| | | | - Jane Fisher
- Division of Social Sciences, Global and Women's Health, Public Health and Preventive Medicine, Monash University, Melbourne, Victoria, Australia
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Winterer M, Geiß J. Combining reverse Monte Carlo analysis of X-ray scattering and extended X-ray absorption fine structure spectra of very small nanoparticles. J Appl Crystallogr 2023; 56:103-109. [PMID: 36777145 PMCID: PMC9901930 DOI: 10.1107/s1600576722010858] [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: 09/21/2022] [Accepted: 11/11/2022] [Indexed: 12/24/2022] Open
Abstract
Finite size effects in partial pair distribution functions generate artefacts in the scattering structure factor and scattering intensity. It is shown how they can be overcome using a binned version of the Debye scattering equation. Accordingly, reverse Monte Carlo simulations are used for very small nanoparticles of LaFeO3 with diameters below 10 nm to simultaneously analyse X-ray scattering data and extended X-ray absorption fine structure spectra at the La K and Fe K edges. The structural information obtained is consistent regarding local structure and long-range order.
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Affiliation(s)
- Markus Winterer
- Nanoparticle Process Technology and CENIDE (Center for Nanointegration Duisburg-Essen), University of Duisburg-Essen, Lotharstrasse 1, 47057 Duisberg, Germany,Correspondence e-mail:
| | - Jeremias Geiß
- Nanoparticle Process Technology and CENIDE (Center for Nanointegration Duisburg-Essen), University of Duisburg-Essen, Lotharstrasse 1, 47057 Duisberg, Germany
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Sethi R, Hill K, Stalls S, Moffson S, de Tejada SS, Gomez L, Marroquin MA. An exploratory study of client and provider experience and perceptions of facility-based childbirth care in Quiché, Guatemala. BMC Health Serv Res 2022; 22:591. [PMID: 35505322 PMCID: PMC9066966 DOI: 10.1186/s12913-022-07686-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] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 02/22/2022] [Indexed: 11/10/2022] Open
Abstract
INTRODUCTION Respectful maternity care (RMC) is fundamental to women's and families' experience of care and their decision about where to give birth. Studies from multiple countries describe the mistreatment of women during facility-based childbirth, though only a small number of studies from Guatemala have been published. Less information is available on women's negative and positive experiences of childbirth care and health workers' perceptions and experiences of providing maternity care. METHODS As part of a program implemented in the Western Highlands of Guatemala to improve quality of reproductive maternal newborn and child health care, a mixed methods assessment was conducted in three hospitals and surrounding areas to understand women's and health workers' experience and perceptions of maternity care. The quantitative component included a survey of 31 maternity health workers and 140 women who had recently given birth in these hospitals. The qualitative component included in-depth interviews (IDIs) and focus group discussions (FGDs) with women and maternity health workers and managers. RESULTS Women reported a mix of positive and negative experiences of childbirth care related to interpersonal and health system factors. 81% of surveyed women reported that health workers had treated them with respect while 21.4% of women reported verbal abuse. Fifty-five percent and 12% of women, respectively, reported not having access to a private toilet and bath or shower. During IDIs and FGDs, many women described higher rates of verbal abuse directed at women who do not speak Spanish. A regression analysis of survey results indicated that speaking Ixil or K'iche at home was associated with a higher likelihood of women being treated negatively during childbirth in a facility. Health worker survey results corroborated negative aspects of care described by women and also reported mistreatment of health workers by clients and families (70.9%) and colleagues (48.2%). CONCLUSIONS This study adds to the literature on women's experience of institutional childbirth and factors that influence this experience by triangulating experience and perceptions of both women and health workers. This assessment highlights opportunities to address mistreatment of both women and health workers and to build on positive care attributes to strengthen RMC for all women.
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Affiliation(s)
| | | | | | - Susan Moffson
- Momentum Country and Global Leadership, Washington, USA.
| | | | - Leonel Gomez
- Reproductive Health Independent Researcher/Consultant, Guatemala City, Guatemala
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Kebede AA, Taye BT, Wondie KY, Tiguh AE, Eriku GA, Mihret MS. Adherence to respectful maternity care guidelines during COVID-19 pandemic and associated factors among healthcare providers working at hospitals in northwest Ethiopia: A multicenter, observational study. Clin Epidemiol Glob Health 2021; 12:100830. [PMID: 34545344 PMCID: PMC8443386 DOI: 10.1016/j.cegh.2021.100830] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 06/23/2021] [Accepted: 07/05/2021] [Indexed: 12/02/2022] Open
Abstract
Background Respectful maternity care is one of the facilitators of women's access to maternity healthcare services. However, it has been evidenced that maternal healthcare services are compromised during the pandemic of coronavirus disease 19 (COVID-19). Moreover, there was a dearth of evidence on healthcare provider's adherence to respectful maternity care guidelines through direct observation. Hence, this study intended to assess healthcare provider's adherence to respectful maternity care guidelines during COVID-19 in northwest Ethiopia. Methods A multicenter observational cross-sectional study was conducted at hospitals in northwest Ethiopia from November 15th/2020 to March 10th/2021. A simple random sampling technique was employed to select 406 healthcare providers. Data were collected through face-to-face interviews and direct observation using a structured questionnaire and standardized checklist respectively. The data were entered into Epi Info 7.1.2 and exported to SPSS version 25 for analysis. A binary logistic regression model was fitted. Both bivariable and multivariable logistic regression analyses were undertaken. The level of significance was claimed based on the adjusted odds ratio (AOR) with a 95% confidence interval (CI) at a p-value of ≤0.05. Results The proportion of healthcare providers adhering to respectful maternity care guidelines during COVID-19 was 63.8% (95% CI: 59.1, 68.4). Job satisfaction (AOR = 1.82; 95% CI: 1.04, 3.18), professional work experience of 3–5 years (AOR = 2.84; 95% CI: 1.74, 4.6) and ≥6 years (AOR = 2.21; 95% CI: 1.11, 4.38), and having education parallel to work (AOR = 0.33; 95% CI: 0.21, 0.51) have an independent statistical significant association with adherence to respectful maternity care guidelines. Conclusion In this study, six out of ten healthcare providers had good adherence to respectful maternity care guidelines. Ensuring health worker's job satisfaction and providing education opportunities by the government would improve healthcare provider's adherence to respectful maternity care standards.
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Affiliation(s)
- Azmeraw Ambachew Kebede
- Department of Clinical Midwifery, School of Midwifery, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia
| | - Birhan Tsegaw Taye
- Department of Midwifery, College of Medicine and Health Sciences, Debre Berhan University, Debre Berhan, Ethiopia
| | - Kindu Yinges Wondie
- Department of Clinical Midwifery, School of Midwifery, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia
| | - Agumas Eskezia Tiguh
- Department of Clinical Midwifery, School of Midwifery, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia
| | - Getachew Azeze Eriku
- Department of Physiotherapy, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia
| | - Muhabaw Shumye Mihret
- Department of Clinical Midwifery, School of Midwifery, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia
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Pozdnyakova I, Roik O, Drewitt JWE, Bytchkov A, Kargl F, Jahn S, Brassamin S, Hennet L. Structure of levitated Si-Ge melts studied by high-energy x-ray diffraction in combination with reverse Monte Carlo simulations. J Phys Condens Matter 2021; 33:244002. [PMID: 33827060 DOI: 10.1088/1361-648x/abf593] [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] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Accepted: 04/07/2021] [Indexed: 06/12/2023]
Abstract
The short-range order in liquid Si, Ge and binary Six-Ge1-xalloys (x= 0.25, 0.50, 0.75) was studied by x-ray diffraction and reverse Monte Carlo simulations. Experiments were performed in the normal and supercooled liquid states by using the containerless technique of aerodynamic levitation with CO2laser heating, enabling deeper supercooling of liquid Si and Si-Ge alloys than previously reported. The local atomic structure of liquid Si and Ge resembles theβ-tin structure. The first coordination numbers of about 6 for all compositions are found to be independent of temperature indicating the supercooled liquids studied retain this high-density liquid (HDL) structure. However, there is evidence of developing local tetrahedral ordering, as manifested by a shoulder on the right side of the first peak inS(Q) which becomes more prominent with increasing supercooling. This result is potentially indicative of a continuous transition from the stable HDLβ-tin (high pressure) phase, towards a metastable low-density liquid phase, reminiscent of the diamond (ambient pressure) structure.
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Affiliation(s)
- Irina Pozdnyakova
- Conditions Extrêmes et Matériaux: Haute Température et Irradiation, CNRS, Université d'Orléans, 45071 Orléans cedex 2, France
| | - Oleksandr Roik
- National Taras Shevchenko University of Kyiv, 01033 Kyiv, Ukraine
| | - James W E Drewitt
- School of Physics, University of Bristol, HH Wills Physics Laboratory, Tyndall Avenue, Bristol, BS8 1TL, United Kingdom
| | | | - Florian Kargl
- Institut für Materialphysik im Weltraum, Deutsches Zentrum für Luft- und Raumfahrt (DLR), 51170 Köln, Germany
| | - Sandro Jahn
- Institute of Geology and Mineralogy, University of Cologne, Zülpicher Str. 49b, 50674 Köln, Germany
| | - Séverine Brassamin
- Conditions Extrêmes et Matériaux: Haute Température et Irradiation, CNRS, Université d'Orléans, 45071 Orléans cedex 2, France
| | - Louis Hennet
- Conditions Extrêmes et Matériaux: Haute Température et Irradiation, CNRS, Université d'Orléans, 45071 Orléans cedex 2, France
- Interfaces, Confinement, Matériaux et Nanostructures, CNRS, Université d'Orléans, 45071 Orléans cedex 2, France
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Wei D, Yang Y, Ricketts CJ, Vocke CD, Ball MW, Sourbier C, Wangsa D, Wangsa D, Guha R, Zhang X, Wilson K, Chen L, Meltzer PS, Ried T, Thomas CJ, Merino MJ, Linehan WM. Novel renal medullary carcinoma cell lines, UOK353 and UOK360, provide preclinical tools to identify new therapeutic treatments. Genes Chromosomes Cancer 2020; 59:472-483. [PMID: 32259323 PMCID: PMC7383978 DOI: 10.1002/gcc.22847] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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: 10/29/2019] [Revised: 03/13/2020] [Accepted: 03/15/2020] [Indexed: 12/02/2022] Open
Abstract
Renal medullary carcinoma (RMC) is a rare, aggressive disease that predominantly afflicts individuals of African or Mediterranean descent with sickle cell trait. RMC comprises 1% of all renal cell carcinoma diagnoses with a median overall survival of 13 months. Patients are typically young (median age—22) and male (male:female ratio of 2:1) and tumors are characterized by complete loss of expression of the SMARCB1 tumor suppressor protein. Due to the low incidence of RMC and the disease's aggressiveness, treatment decisions are often based on case reports. Thus, it is critical to develop preclinical models of RMC to better understand the pathogenesis of this disease and to identify effective forms of therapy. Two novel cell line models, UOK353 and UOK360, were derived from primary RMCs that both demonstrated the characteristic SMARCB1 loss. Both cell lines overexpressed EZH2 and other members of the polycomb repressive complex and EZH2 inhibition in RMC tumor spheroids resulted in decreased viability. High throughput drug screening of both cell lines revealed several additional candidate compounds, including bortezomib that had both in vitro and in vivo antitumor activity. The activity of bortezomib was shown to be partially dependent on increased oxidative stress as addition of the N‐acetyl cysteine antioxidant reduced the effect on cell proliferation. Combining bortezomib and cisplatin further decreased cell viability both in vitro and in vivo that single agent bortezomib treatment. The UOK353 and UOK360 cell lines represent novel preclinical models for the development of effective forms of therapy for RMC patients.
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Affiliation(s)
- Darmood Wei
- Urologic Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, United States
| | - Youfeng Yang
- Urologic Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, United States
| | - Christopher J Ricketts
- Urologic Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, United States
| | - Cathy D Vocke
- Urologic Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, United States
| | - Mark W Ball
- Urologic Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, United States
| | - Carole Sourbier
- Urologic Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, United States
| | - Darawalee Wangsa
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, United States
| | - Danny Wangsa
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, United States
| | - Rajarshi Guha
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, Maryland, United States
| | - Xiaohu Zhang
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, Maryland, United States
| | - Kelli Wilson
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, Maryland, United States
| | - Lu Chen
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, Maryland, United States
| | - Paul S Meltzer
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, United States
| | - Thomas Ried
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, United States
| | - Craig J Thomas
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, Maryland, United States
| | - Maria J Merino
- Laboratory of Pathology, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, United States
| | - W Marston Linehan
- Urologic Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, United States
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Sierra-Galan LM, Shveid-Gerson D, Gomez-Garza G, Rey-Rodriguez A. Double incomplete aortic arch and Kommerell's Diverticulum as a cause of chronic cough. Arch Cardiol Mex 2015; 85:158-60. [PMID: 25700574 DOI: 10.1016/j.acmx.2014.12.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Revised: 12/04/2014] [Accepted: 12/10/2014] [Indexed: 11/26/2022] Open
Abstract
Vascular rings which can cause symptoms related the trachea and esophagus compression occur in less than 1% of all cardiovascular malformations. Double incomplete aortic arch with right-sided aorta and aberrant left subclavian artery is the rarest one, and its present in 0.04-0.1% of autopsy series. A case of this malformation with a Kommerell's Diverticulum is presented. This diverticulum has risk of severe complications such as dissection and/or rupture.
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Affiliation(s)
- Lilia M Sierra-Galan
- Head of Cardiology at American British Cowdray Medical Center, Santa Fe Campus, Mexico, D.F., Mexico.
| | - Daniela Shveid-Gerson
- Pre-grade Intern of the American British Cowdray Medical Center, Mexico, D.F., Mexico
| | - Gilberto Gomez-Garza
- Staff Physician of Radiology and Molecular Imaging Department at American British Cowdray Medical Center, Mexico, D.F., Mexico
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Denyes MJ, Rutter A, Zeeb BA. In situ application of activated carbon and biochar to PCB-contaminated soil and the effects of mixing regime. Environ Pollut 2013; 182:201-208. [PMID: 23933124 DOI: 10.1016/j.envpol.2013.07.016] [Citation(s) in RCA: 11] [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: 01/22/2013] [Revised: 07/04/2013] [Accepted: 07/09/2013] [Indexed: 06/02/2023]
Abstract
The in situ use of carbon amendments such as activated carbon (AC) and biochar to minimize the bioavailability of organic contaminants is gaining in popularity. In the first in situ experiment conducted at a Canadian PCB-contaminated Brownfield site, GAC and two types of biochar were statistically equal at reducing PCB uptake into plants. PCB concentrations in Cucurbita pepo root tissue were reduced by 74%, 72% and 64%, with the addition of 2.8% GAC, Burt's biochar and BlueLeaf biochar, respectively. A complementary greenhouse study which included a bioaccumulation study of Eisenia fetida (earthworm), found mechanically mixing carbon amendments with PCB-contaminated soil (i.e. 24 h at 30 rpm) resulted in shoot, root and worm PCB concentrations 66%, 59% and 39% lower than in the manually mixed treatments (i.e. with a spade and bucket). Therefore, studies which mechanically mix carbon amendments with contaminated soil may over-estimate the short-term potential to reduce PCB bioavailability.
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Affiliation(s)
- Mackenzie J Denyes
- Department of Chemistry and Chemical Engineering, Royal Military College of Canada, Kingston, ON K7K 7B4, Canada.
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Manivannan J, Tay SSW, Ling EA, Dheen ST. Dihydropyrimidinase-like 3 regulates the inflammatory response of activated microglia. Neuroscience 2013; 253:40-54. [PMID: 23988434 DOI: 10.1016/j.neuroscience.2013.08.023] [Citation(s) in RCA: 24] [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: 04/27/2013] [Revised: 08/14/2013] [Accepted: 08/15/2013] [Indexed: 11/28/2022]
Abstract
Microglia, the resident immune cells of the CNS, are known to respond to injuries, infection and inflammation in the CNS by producing proinflammatory cytokines and phagocytosing cell debris and pathogens. In this study, we investigated the expression pattern and role of dihydropyrimidinase-like 3 (Dpysl3), a member of collapsin response mediator protein family, on the inflammatory reaction of microglia. Microarray analysis comparing the global gene expression profile of ameboid and ramified microglia has shown that Dpysl3 is mainly expressed in ameboid microglia in the 5-day postnatal rat brain. Immunohistochemical analysis revealed that Dpysl3 was intensely expressed in ameboid microglial cells in the rat brain till postnatal 7th day and then gradually diminished in ramified microglia of 2 weeks postnatal rat brain. Further, in vitro analysis confirmed that Dpysl3 expression was induced in activated BV-2 microglia treated with lipopolysaccharide (LPS). It is well documented that microglial activation by LPS increased the expression of inducible nitric oxide synthase (iNOS) and proinflammatory cytokines through the activation of nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) activity in BV-2 microglia. However, siRNA-mediated knockdown of Dpysl3 prevented the LPS-induced expression of iNOS and cytokines including interleukin-1 beta, and tumor necrosis factor-alpha as well as nuclear translocation of NF-κB in microglia. Remarkably, knockdown of Dpysl3 inhibited the migration of activated microglia coupled with deranged actin filament configuration (as revealed by F-actin cytoskeleton expression) in lamellipodia projecting from the cells. Knockdown of Dpysl3 also inhibited the phagocytic ability of activated microglia. These findings suggest that knockdown of Dpysl3 can inhibit activation, migration and phagocytic capability of microglia and consequently reduce neuroinflammation.
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Affiliation(s)
- J Manivannan
- Department of Anatomy, Yong Loo Lin School of Medicine, National University of Singapore, Blk MD10, 4 Medical Drive, Singapore 117597, Singapore
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