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Chaparro MP, Lopez MA. Trends in Food Insecurity Among Households with Children Participating in WIC and SNAP in California, 2005-2017. Matern Child Health J 2024; 28:315-323. [PMID: 37955841 DOI: 10.1007/s10995-023-03829-8] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/24/2023] [Indexed: 11/14/2023]
Abstract
OBJECTIVES To assess trends in food insecurity between 2005 and 2017-a period including the Great Recession-by participation in the Special Supplemental Nutrition Program for Women, Infants and Children (WIC). METHODS Data from the California Health Interview Survey (CHIS), 2005-2017, were used, including 7421 households: WIC participants (n = 4184)-those participating in WIC only (n = 2315) and in the Supplemental Nutrition Assistance Program (SNAP) in addition to WIC (n = 1869)-and WIC-eligible non-participants (n = 3237). Multivariable logistic regression models were run with food insecurity as the outcome, WIC participation and survey year as predictors, and adjusted by children's and family's demographic and socioeconomic variables. Interactions between WIC participation and survey year were tested. RESULTS WIC + SNAP participating households had higher crude food insecurity prevalence across time compared to WIC only and WIC-eligible non-participant households. In fully adjusted models: (1) food insecurity was higher between 2009 and 2017, compared to 2005, for all groups; (2) WIC participating households had higher odds of food insecurity than WIC-eligible non-participants (OR = 1.23, 95%CI = 1.10-1.38); (3) when WIC participants were split into WIC only and WIC + SNAP, WIC + SNAP households had higher odds of food insecurity than WIC-eligible non-participants (OR = 1.45, 95%CI = 1.27-1.66); and (4) the association between food insecurity and WIC participation did not change across time (interaction p-value > 0.10). CONCLUSIONS Food insecurity increased post-Great Recession among low-income households with children in California, with those participating in WIC, particularly in WIC + SNAP, at higher risk. WIC should consider additional referrals for households who participate in WIC + SNAP.
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Affiliation(s)
- M Pia Chaparro
- Department of Social, Behavioral and Population Sciences, School of Public Health and Tropical Medicine, Tulane University, 1440 Canal St. Suite 2210, New Orleans, LA, 70112, USA.
- Department of Health Systems and Population Health, School of Public Health, University of Washington, 305J Raitt Hall, Box 353410, Seattle, WA, 98195, USA.
| | - Miguel A Lopez
- Department of Social, Behavioral and Population Sciences, School of Public Health and Tropical Medicine, Tulane University, 1440 Canal St. Suite 2210, New Orleans, LA, 70112, USA
- Gretchen Swanson Center for Nutrition, 14301 FNB Parkway, Suite 100, Omaha, NE, 68154, USA
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Kettenburg AT, Lopez MA, Yogendra K, Prior MJ, Rose T, Bimson S, Heuer S, Roy SJ, Bailey-Serres J. PHOSPHORUS-STARVATION TOLERANCE 1 (OsPSTOL1) is prevalent in upland rice and enhances root growth and hastens low phosphate signaling in wheat. Plant Cell Environ 2023; 46:2187-2205. [PMID: 36946067 DOI: 10.1111/pce.14588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 03/07/2023] [Accepted: 03/19/2023] [Indexed: 06/08/2023]
Abstract
PHOSPHORUS-STARVATION TOLERANCE 1 (OsPSTOL1) is a variably present gene that benefits crown root growth and phosphorus (P) sufficiency in rice (Oryza sativa). To explore the ecophysiological importance of this gene, we performed a biogeographic survey of landraces and cultivars, confirming that functional OsPSTOL1 alleles prevail in low nutrient and drought-prone rainfed ecosystems, whereas loss-of-function and absence haplotypes predominate in control-irrigated paddy varieties of east Asia. An evolutionary history analysis of OsPSTOL1 and related genes in cereal, determined it and other genes are kinase-only domain derivatives of membrane-associated receptor like kinases. Finally, to evaluate the potential value of this kinase of unknown function in another Gramineae, wheat (Triticum aestivum) lines overexpressing OsPSTOL1 were evaluated under field and controlled low P conditions. OsPSTOL1 enhances growth, crown root number, and overall root plasticity under low P in wheat. Survey of root and shoot crown transcriptomes at two developmental stages identifies transcription factors that are differentially regulated in OsPSTOL1 wheat that are similarly controlled by the gene in rice. In wheat, OsPSTOL1 alters the timing and amplitude of regulators of root development in dry soils and hastens induction of the core P-starvation response. OsPSTOL1 and related genes may aid more sustainable cultivation of cereal crops.
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Affiliation(s)
- Alek T Kettenburg
- Botany and Plant Sciences Department, Center for Plant Cell Biology, University of California, Riverside, California, USA
| | - Miguel A Lopez
- Botany and Plant Sciences Department, Center for Plant Cell Biology, University of California, Riverside, California, USA
| | - Kalenahalli Yogendra
- School of Agriculture, Food and Wine & Waite Research Institute, The University of Adelaide, Adelaide, South Australia, Australia
- ARC Industrial Transformation Research Hub for Wheat in a Hot and Dry Climate, The University of Adelaide, Adelaide, South Australia, Australia
| | - Matthew J Prior
- Botany and Plant Sciences Department, Center for Plant Cell Biology, University of California, Riverside, California, USA
| | - Teresa Rose
- Department of Plant Science, Rothamsted Research, Harpenden, Hertfordshire, UK
| | - Sabrina Bimson
- Botany and Plant Sciences Department, Center for Plant Cell Biology, University of California, Riverside, California, USA
| | - Sigrid Heuer
- School of Agriculture, Food and Wine & Waite Research Institute, The University of Adelaide, Adelaide, South Australia, Australia
- Department of Plant Science, Rothamsted Research, Harpenden, Hertfordshire, UK
| | - Stuart J Roy
- School of Agriculture, Food and Wine & Waite Research Institute, The University of Adelaide, Adelaide, South Australia, Australia
- ARC Industrial Transformation Research Hub for Wheat in a Hot and Dry Climate, The University of Adelaide, Adelaide, South Australia, Australia
| | - Julia Bailey-Serres
- Botany and Plant Sciences Department, Center for Plant Cell Biology, University of California, Riverside, California, USA
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Chaparro MP, Lopez MA. Food insecurity and food consumption among children who receive federal food assistance. Appetite 2022; 178:106268. [PMID: 35934113 DOI: 10.1016/j.appet.2022.106268] [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: 12/02/2021] [Revised: 07/27/2022] [Accepted: 07/31/2022] [Indexed: 11/27/2022]
Abstract
The objective of this study was to investigate the association between household food insecurity and food intake among children who participated in the Special Supplemental Nutrition Program for Women, Infants and Children (WIC), including a sub-sample who also participated in the Supplemental Nutrition Assistance Program (SNAP). Data came from the 2014 and 2017 Los Angeles County WIC Surveys, involving a random sample of WIC participating families in Los Angeles, California. Outcome variables were average daily consumption of fruit, 100% fruit juice, vegetables, milk, other juice, other sweetened drinks, and sweet foods, and frequency of fast-food consumption, as reported by the child's caregiver. Our predictor was household food insecurity, obtained from the 6-item Household Food Security Survey Module. Poisson regression (fruit, 100% fruit juice, vegetables, and milk), Negative Binomial regression (other juice, other sweetened drinks, and sweet foods) and multinomial logistic regression (frequency of fast food) models were run, adjusting for child's age and sex; maternal age, ethnicity and language, education, and employment; and type of WIC participation (WIC only vs. WIC + SNAP). In fully adjusted models, household food insecurity was associated with higher consumption of 100% fruit juice (RR = 1.08, 95%CI = 1.03-1.11), milk (RR = 1.04, 95%CI = 1.01-1.07), other juice (RR = 1.16, 95%CI = 1.08-1.26), other sweetened drinks (RR = 1.28, 95%CI = 1.12-1.46), and sweet foods (RR = 1.09, 95%CI = 1.04-1.14). No significant associations were found between household food insecurity and fruit and vegetable consumption. Nutrition education provided by WIC should continue to emphasize the importance of consuming fresh foods, while limiting foods high in sugar for this young population. Efforts should be made to identify food insecure families at the point of service delivery for enhanced nutrition education and social services referrals.
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Affiliation(s)
- M Pia Chaparro
- Department of Social, Behavioral, and Population Sciences, School of Public Health and Tropical Medicine, Tulane University, United States.
| | - Miguel A Lopez
- Department of Social, Behavioral, and Population Sciences, School of Public Health and Tropical Medicine, Tulane University, United States
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Santos MP, Brewer JD, Lopez MA, Paz-Soldan VA, Chaparro MP. Determinants of food insecurity among households with children in Villa el Salvador, Lima, Peru: the role of gender and employment, a cross-sectional study. BMC Public Health 2022; 22:717. [PMID: 35410187 PMCID: PMC8996213 DOI: 10.1186/s12889-022-12889-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 03/01/2022] [Indexed: 11/29/2022] Open
Abstract
Background From 2014–2019, Latin America and the Caribbean had the fastest growth of moderate-to-severe food insecurity than any other region, rising from 22.9% to 31.7%. While the prevalence of food insecurity is higher among women than men in every continent, Latin America has the largest food insecurity gender gap. Factors contributing to this gender inequity include underrepresentation of women in formal employment, heightened burden of dependent care on women, and unequal compensation of labor for women vs. men. The objective of this study was to investigate the association between the gender of the head of the household, employment status of household members, and food insecurity in households with children in a low-income district of Lima, Peru. Methods This cross-sectional study was carried out in Villa El Salvador, the fifth largest district in Metropolitan Lima, Peru, where over 20% of the population lives in poverty. Data were collected on a stratified random sample (n = 329) using a household questionnaire, including a validated food security tool (HFIAS). We ran multivariate logistic regression models predicting household food insecurity, with independent variables including gender of household head, education of household head, employment of household head, household-level employment status, age, and weekly food expenses per person. Results In fully adjusted models, woman-headed households had almost thrice the odds of being food insecure compared to man-headed households. Education also had a significant effect size: a household whose household head did not complete high school was 3.4 times more likely to be food insecure than if they had some post-secondary education. Woman-headed households had a significantly higher proportion of members not formally employed, compared to man-headed households, but employment status was not associated with food insecurity. Conclusions Gender of the household head was a major contributing factor to household food insecurity in Villa el Salvador. Gender dynamics affecting opportunities for employment, education, and non-remunerated work should inform national food security policies and interventions with the goal to not only lower food insecurity, but also reduce gender inequities in food insecurity and other nutritional outcomes. Supplementary Information The online version contains supplementary material available at 10.1186/s12889-022-12889-4.
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Affiliation(s)
- M Patrizia Santos
- Department of Epidemiology Tulane University School of Public Health and Tropical Medicine, 1440 Canal Street suite 2000, New Orleans, LA, 70112, USA
| | - Jessica D Brewer
- Department of Social, Behavioral and Population Sciences, Tulane University School of Public Health and Tropical Medicine, 1440 Canal Street suite 2210, New Orleans, LA, 70112, USA
| | - Miguel A Lopez
- Department of Social, Behavioral and Population Sciences, Tulane University School of Public Health and Tropical Medicine, 1440 Canal Street suite 2210, New Orleans, LA, 70112, USA
| | - Valerie A Paz-Soldan
- Department of International Health and Sustainable Development, Tulane University School of Public Health and Tropical Medicine, 1440 Canal Street suite 2210, New Orleans, LA, 70112, USA.,Asociación Benéfica PRISMA, Avenida Santo Toribio 115, 5to piso, San Isidro, 15073, Lima, Peru
| | - M Pia Chaparro
- Department of Social, Behavioral and Population Sciences, Tulane University School of Public Health and Tropical Medicine, 1440 Canal Street suite 2210, New Orleans, LA, 70112, USA.
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Harrison RM, Ainsbury E, Alves J, Bottollier-Depois JF, Breustedt B, Caresana M, Clairand I, Fantuzzi E, Fattibene P, Gilvin P, Hupe O, Knežević Ž, Lopez MA, Olko P, Olšovcová V, Rabus H, Rühm W, Silari M, Stolarczyk L, Tanner R, Vanhavere F, Vargas A, Woda C. EURADOS STRATEGIC RESEARCH AGENDA 2020: VISION FOR THE DOSIMETRY OF IONISING RADIATION. Radiat Prot Dosimetry 2021; 194:42-56. [PMID: 33989429 PMCID: PMC8165425 DOI: 10.1093/rpd/ncab063] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 02/28/2021] [Accepted: 04/06/2021] [Indexed: 05/02/2023]
Abstract
Since 2012, the European Radiation Dosimetry Group (EURADOS) has developed its Strategic Research Agenda (SRA), which contributes to the identification of future research needs in radiation dosimetry in Europe. Continued scientific developments in this field necessitate regular updates and, consequently, this paper summarises the latest revision of the SRA, with input regarding the state of the art and vision for the future contributed by EURADOS Working Groups and through a stakeholder workshop. Five visions define key issues in dosimetry research that are considered important over at least the next decade. They include scientific objectives and developments in (i) updated fundamental dose concepts and quantities, (ii) improved radiation risk estimates deduced from epidemiological cohorts, (iii) efficient dose assessment for radiological emergencies, (iv) integrated personalised dosimetry in medical applications and (v) improved radiation protection of workers and the public. This SRA will be used as a guideline for future activities of EURADOS Working Groups but can also be used as guidance for research in radiation dosimetry by the wider community. It will also be used as input for a general European research roadmap for radiation protection, following similar previous contributions to the European Joint Programme for the Integration of Radiation Protection Research, under the Horizon 2020 programme (CONCERT). The full version of the SRA is available as a EURADOS report (www.eurados.org).
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Affiliation(s)
| | - E Ainsbury
- Public Health England, Chilton, Didcot, UK
| | - J Alves
- Instituto Superior Técnico (IST), CTN, Lisboa, Portugal
| | - J-F Bottollier-Depois
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Fontenay-aux-Roses Cedex, France
| | - B Breustedt
- Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
| | | | - I Clairand
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Fontenay-aux-Roses Cedex, France
| | - E Fantuzzi
- ENEA - Radiation Protection Institute, Bologna, Italy
| | - P Fattibene
- Istituto Superiore di Sanità (ISS), Rome, Italy
| | - P Gilvin
- Public Health England, Chilton, Didcot, UK
| | - O Hupe
- Physikalisch Technische Bundesanstalt (PTB), Braunschweig and Berlin, Germany
| | - Ž Knežević
- Ruđer Bošković Institute (RBI), Zagreb, Croatia
| | - M A Lopez
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain
| | - P Olko
- Instytut Fizyki Jądrowej Polskiej Akademii Nauk (IFJ PAN), Kraków, Poland
| | - V Olšovcová
- ELI Beamlines, Institute of Physics, Czech Academy of Sciences, Dolní Břežany, Czech Republic
| | - H Rabus
- Physikalisch Technische Bundesanstalt (PTB), Braunschweig and Berlin, Germany
| | - W Rühm
- Helmholtz Zentrum München, Institute of Radiation Medicine, Neuherberg, Germany
| | - M Silari
- CERN, 1211 Geneva 23, Switzerland
| | - L Stolarczyk
- Danish Centre for Particle Therapy, Aarhus, Denmark
- Instytut Fizyki Jądrowej Polskiej Akademii Nauk (IFJ PAN), Kraków, Poland
| | - R Tanner
- Public Health England, Chilton, Didcot, UK
| | - F Vanhavere
- Belgian Nuclear Research Centre (SCK-CEN), Mol, Belgium
| | - A Vargas
- Institute of Energy Technologies, Universitat Politecnica de Catalunya, Barcelona, Spain
| | - C Woda
- Helmholtz Zentrum München, Institute of Radiation Medicine, Neuherberg, Germany
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6
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Brewer JD, Santos MP, Lopez MA, Paz-Soldan VA, Chaparro MP. Use of Formal and Informal Food Resources by Food Insecure Families in Lima, Peru: A Mixed-Methods Analysis. J Community Health 2021; 46:1069-1077. [PMID: 33907903 PMCID: PMC8078387 DOI: 10.1007/s10900-021-00989-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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] [Accepted: 04/10/2021] [Indexed: 11/25/2022]
Abstract
The goal of this study was to measure food insecurity among families with children in a low-income district of Lima, Peru and to identify the formal and informal food resources available to them that may affect their food security status. In June-July 2019, we collected data from 329 randomly selected households in Villa El Salvador (Lima, Peru). Following a mixed methods approach, we found that the percentage of households using food assistance programs (FAPs) increased with increasing levels of food insecurity, but two FAPs were heavily used by households regardless of food (in)security. The main reasons for using FAPs included financial need, already being signed up in the program, and believing that the food was of nutritional value; the main reasons for non-use were finding the program unnecessary, dislike or poor perceived quality of the food, and not being able to sign up for the program. Similarly, informal food resources, such as buying food on credit or receiving food from someone outside the household, were incrementally used with increased levels of food insecurity. Our study clarifies the relationship between level of household food insecurity and FAP use – FAPs more commonly used by food insecure households were used because of financial need, whereas the FAPs most commonly used by food secure households were those with automatic enrollment. At a programmatic level, our research highlights the need for making nutritious and preferred foods available in FAPs and standardizing the application of enrollment criteria.
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Affiliation(s)
- J D Brewer
- School of Public Health and Tropical Medicine, Department of Global Community Health and Behavioral Sciences, Tulane University, 1440 Canal Street, New Orleans, Louisiana, 70112, USA.
| | - M P Santos
- School of Public Health and Tropical Medicine, Department of Biostatistics and Data Science, Tulane University, 1440 Canal Street, New Orleans, Louisiana, 70112, USA
| | - M A Lopez
- School of Public Health and Tropical Medicine, Department of Global Community Health and Behavioral Sciences, Tulane University, 1440 Canal Street, New Orleans, Louisiana, 70112, USA
| | - V A Paz-Soldan
- School of Public Health and Tropical Medicine, Department of Global Community Health and Behavioral Sciences, Tulane University, 1440 Canal Street, New Orleans, Louisiana, 70112, USA
- Asociación Benéfica PRISMA, Avenida Santo Toribio 115, 5th floor, San Isidro, 15073, Lima, Peru
| | - M P Chaparro
- School of Public Health and Tropical Medicine, Department of Global Community Health and Behavioral Sciences, Tulane University, 1440 Canal Street, New Orleans, Louisiana, 70112, USA
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Nurchis MC, Pascucci D, Lopez MA, Moffa A, Passarelli PC, Bressi F, Casale M, Damiani G. Epidemiology of odontogenic sinusitis: an old, underestimated disease, even today. A narrative literature review. J BIOL REG HOMEOS AG 2020; 34:195-200. Technology in Medicine. [PMID: 33386049] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Odontogenic sinusitis is an inflammatory condition of the paranasal sinuses resulting from dental pathology. The aim of this study is to provide an overview of the current literature on the dimensions of the phenomenon, quality of life, economic considerations, and approaches to odontogenic sinusitis. A narrative review was conducted following the methodology proposed by Green et al. (2006). There appears to have been an increase in the incidence over the last decade. Nowadays, evidence in the literature reports that 10-12% up to 40% of all sinusitis cases are associated with odontogenic infections. The iatrogenia was by far the leading cause of odontogenic sinusitis (55.97%) while the first and second molars were the most affected teeth with an incidence of 35.6% and 22%. If not properly diagnosed and treated, these infections may lead to a rapid spread, giving rise to potentially life-threatening complications with a significant general health-related Quality of Life detriment. The proper management of patients in a pre-implant logical setting leads to substantial savings, ranging from €38 million to €152 million, for the Italian National Health Service. Odontogenic sinusitis management should involve shared decisionmaking between the otolaryngologist, dental provider, and patient, where the benefits and risks of dental treatment and endoscopic sinus surgery are discussed.
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Affiliation(s)
- M C Nurchis
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - D Pascucci
- Università Cattolica del Sacro Cuore, Rome, Italy
| | - M A Lopez
- Unit of Otolaryngology - Integrated Therapies in Otolaryngology, Campus Bio-Medico University, Rome, Italy
| | - A Moffa
- Unit of Otolaryngology - Integrated Therapies in Otolaryngology, Campus Bio-Medico University, Rome, Italy
| | - P C Passarelli
- Department of Head and Neck, Division of Oral Surgery and Implantology, Institute of Clinical Dentistry, Catholic University of the Sacred Heart, Gemelli University Polyclinic Foundation, Rome, Italy
| | - F Bressi
- Department of Physical and Rehabilitation Medicine, Campus Bio-Medico University, Rome, Italy
| | - M Casale
- Unit of Otolaryngology - Integrated Therapies in Otolaryngology, Campus Bio-Medico University, Rome, Italy
| | - G Damiani
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
- Università Cattolica del Sacro Cuore, Rome, Italy
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Lopez MA, Passarelli PC, Marra M, Lopez A, D'Angelo A, Moffa A, Martinez S, Casale M, D'Addona A. Photodynamic therapy (PDT) in non-surgical treatment of periodontitis. J BIOL REG HOMEOS AG 2020; 34:67-78. Technology in Medicine. [PMID: 33386036] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Periodontitis represents a major problem for patients, since it is not possible to eliminate the bacteria that are responsible for this pathology with a pharmacological treatment. The present study included forty-four patients with periodontitis, who had undergone disinfection via photodynamic therapy (PDT) using a laser source having a 635 nm wavelength associated with a photoactivable substance (methylene blue). Clinical assessment of plaque index (PI), bleeding on probing (BOP), probing depth (PD), calculus index (CI), gingival recession (REC) and clinical attachment level (CAL) were recorded at base line, 1 month (4 weeks) after treatment and again 3 months (12 weeks) after treatment, while site radiography (RX) and microbiological test (MT) were recorded at base line and 3 months (12 weeks) after treatment. The outcomes show a good efficacy of the PDT in the elimination of the periodontal pathogenic microflora and in the improvement of the clinical parameters considered: from the base line to the final check after 12 weeks it has been observed a reduction in REC of about 16.9%, a reduction of CAL of about 17.85%, a reduction of the BoP of about 93.3%, a reduction of the PD of about 17%, a reduction of the CI of about 66.3%, a reduction of PI of about 44%, and microbiologically a reduction of the total amount of bacteria with proven parodontopathic properties (red complex bacteria) of about 58.74%. Within the limits of the present study, PDT can be reasonably considered as a good carrier that leads to significant improvements in the parameters (clinical and microbiological) considered.
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Affiliation(s)
- M A Lopez
- Unit of Otolaryngology, UOS ORL TI, Campus-Biomedico University, Rome, Italy
| | - P C Passarelli
- Department of Head and Neck, Division of Oral Surgery and Implantology, Institute of Clinical Dentistry, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario Gemelli, Rome, Italy
| | - M Marra
- Department of Head and Neck, Division of Oral Surgery and Implantology, Institute of Clinical Dentistry, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario Gemelli, Rome, Italy
| | - A Lopez
- Dental Unit UEM, Madrid, Spain
| | - A D'Angelo
- Department of Head and Neck, Division of Oral Surgery and Implantology, Institute of Clinical Dentistry, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario Gemelli, Rome, Italy
| | - A Moffa
- Unit of Otolaryngology, UOS ORL TI, Campus-Biomedico University, Rome, Italy
| | - S Martinez
- Department of Head and Neck, Division of Oral Surgery and Implantology, Institute of Clinical Dentistry, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario Gemelli, Rome, Italy
| | - M Casale
- Unit of Otolaryngology, UOS ORL TI, Campus-Biomedico University, Rome, Italy
| | - A D'Addona
- Department of Head and Neck, Division of Oral Surgery and Implantology, Institute of Clinical Dentistry, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario Gemelli, Rome, Italy
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9
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Passarelli PC, Romeo A, Lopez MA, De Angelis P, Desantis V, Piccirillo GB, Papa R, Papi P, Pompa G, Moffa A, Casale M, D'Addona A. Evaluation of the periodontal healing of the second mandibular molar distal site following insertion of PRF in the third molar post extraction alveolus. J BIOL REG HOMEOS AG 2020; 34:111-118. Technology in Medicine. [PMID: 33386040] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The aim of this study was to evaluate the periodontal healing of the distal sites of the mandibular second molars, comparing the extraction therapy of the third molar with and without PRF adjunct into the postextraction alveolus. The study sample was composed by 40 consecutive patients who underwent extraction of mandibular third molars. Patients were divided in two groups: the last 20 participants who have only been subjected to extraction (spontaneous healing group, SHG) and the first 20 patients who had PRF adjunct (PRF group, PG). Healing was evaluated by analyzing the variations in terms of PPD (Probing Pocket Depth), REC (Recession), CAL (Level of Clinical Attachment), BoP (Bleeding on Probing) and GI (Gingival Index) from Baseline to further follow-ups at 1 month and 3 months. The disto-vestibular (DV) and disto-lingual (DL) PPD values of the second mandibular molar were measured at Baseline and after three months in the two groups. Patients of the PG group showed lower PPD values at 1 month and 3 months postoperatively: DV: 3.6±1.09 - DL: 3.5±1.15 and DV: 2.5±0.83 - DL: 2.6±1.09, respectively. Patients belonging to the SHG also showed lower PPD values, reporting respectively the following DV values after 3 months: 2.7±0.86 - DL: 2.75±0. 85. However, there was no statistically significant difference comparing the results obtained in PG and SHG groups at 1 and 3 months (p>0.05). The insertion of PRF inside the post-extraction alveolus of the mandibular third molar leads to limited improvement in terms of periodontal healing, compared to extraction therapy only.
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Affiliation(s)
- P C Passarelli
- Department of Head and Neck, Division of Oral Surgery and Implantology, Institute of Clinical Dentistry, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario Gemelli, Rome, Italy
| | - A Romeo
- Department of Head and Neck, Division of Oral Surgery and Implantology, Institute of Clinical Dentistry, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario Gemelli, Rome, Italy
| | - M A Lopez
- Unit of Otolaryngology, UOS ORL TI, Campus-Biomedico University, Rome, Italy
| | - P De Angelis
- Department of Head and Neck, Division of Oral Surgery and Implantology, Institute of Clinical Dentistry, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario Gemelli, Rome, Italy
| | - V Desantis
- Department of Head and Neck, Division of Oral Surgery and Implantology, Institute of Clinical Dentistry, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario Gemelli, Rome, Italy
| | - G B Piccirillo
- Department of Head and Neck, Division of Oral Surgery and Implantology, Institute of Clinical Dentistry, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario Gemelli, Rome, Italy
| | - R Papa
- Department of Head and Neck, Division of Oral Surgery and Implantology, Institute of Clinical Dentistry, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario Gemelli, Rome, Italy
| | - P Papi
- Department of Oral and Maxillo-facial Sciences, "Sapienza" University of Rome, Rome, Italy
| | - G Pompa
- Department of Oral and Maxillo-facial Sciences, "Sapienza" University of Rome, Rome, Italy
| | - A Moffa
- Unit of Otolaryngology, UOS ORL TI, Campus-Biomedico University, Rome, Italy
| | - M Casale
- Unit of Otolaryngology, UOS ORL TI, Campus-Biomedico University, Rome, Italy
| | - A D'Addona
- Department of Head and Neck, Division of Oral Surgery and Implantology, Institute of Clinical Dentistry, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario Gemelli, Rome, Italy
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10
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Lopez MA, Passarelli PC, Marra M, Lopez A, Moffa A, Casale M, D'Addona A. Antimicrobial efficacy of photodynamic therapy (PDT) in periodontitis and peri-implantitis: A systematic review. J BIOL REG HOMEOS AG 2020; 34:59-65. Technology in Medicine. [PMID: 33386035] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
To systematically review the literature regarding the antimicrobial effects of photodynamic therapy (PDT) on multi-bacterial species in periodontitis and peri-implantitis disease. The addressed focused question was: "Does PDT show antimicrobial efficacy against multi-bacterial species colonization in periodontal pockets and on the surface of dental implants?" Electronic databases including MEDLINE and EMBASE up to and including December 2018 were searched. Of the ninety studied analyzed, seven were included, four for the study of PDT in peri-implantitis disease and three for periodontal disease. All studies reported the multibacterial species outcomes after the application of antimicrobial PDT. All studies showed a significant reduction in the bacterial load, both in studies based on periodontal and peri-implantary disease, with an average reduction of the total amount of bacterial load of 99.3%. Moreover, the change in clinical parameters is equally important, with an average reduction of PPD of 1.01 mm (from 4.92 to 3.49 ± SD with a percentage reduction of 29%); of BoP of 50%; of RCAL of 1.19 mm (from 9.93 to 8.74, with an average percentage reduction of 12%); of PI of 0.3 (from 1 to 0.7 with a percentage reduction of 30%) and of GI of 1.2 (from 1.8 to 0.6 with a percentage reduction of 66.6%). This review demonstrated significant reduction in the bacterial load in periodontal pocket and dental implant surface with the use of PDT. The results of this review should be considered preliminary and further studies with standardized laser parameters are needed to obtain strong conclusions.
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Affiliation(s)
- M A Lopez
- Unit of Otolaryngology, UOS ORL TI, Campus Bio-Medico University, Rome, Italy
| | - P C Passarelli
- Department of Head and Neck, Division of Oral Surgery and Implantology, Institute of Clinical Dentistry, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario Gemelli, Rome, Italy
| | - M Marra
- Department of Head and Neck, Division of Oral Surgery and Implantology, Institute of Clinical Dentistry, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario Gemelli, Rome, Italy
| | - A Lopez
- Universidad Europea de Madrid, Madrid, Spain
| | - A Moffa
- Unit of Otolaryngology, UOS ORL TI, Campus Bio-Medico University, Rome, Italy
| | - M Casale
- Unit of Otolaryngology, UOS ORL TI, Campus Bio-Medico University, Rome, Italy
| | - A D'Addona
- Department of Head and Neck, Division of Oral Surgery and Implantology, Institute of Clinical Dentistry, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario Gemelli, Rome, Italy
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11
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Giussani A, Lopez MA, Romm H, Testa A, Ainsbury EA, Degteva M, Della Monaca S, Etherington G, Fattibene P, Güclu I, Jaworska A, Lloyd DC, Malátová I, McComish S, Melo D, Osko J, Rojo A, Roch-Lefevre S, Roy L, Shishkina E, Sotnik N, Tolmachev SY, Wieser A, Woda C, Youngman M. Eurados review of retrospective dosimetry techniques for internal exposures to ionising radiation and their applications. Radiat Environ Biophys 2020; 59:357-387. [PMID: 32372284 PMCID: PMC7369133 DOI: 10.1007/s00411-020-00845-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [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: 11/08/2019] [Accepted: 04/15/2020] [Indexed: 05/17/2023]
Abstract
This work presents an overview of the applications of retrospective dosimetry techniques in case of incorporation of radionuclides. The fact that internal exposures are characterized by a spatially inhomogeneous irradiation of the body, which is potentially prolonged over large periods and variable over time, is particularly problematic for biological and electron paramagnetic resonance (EPR) dosimetry methods when compared with external exposures. The paper gives initially specific information about internal dosimetry methods, the most common cytogenetic techniques used in biological dosimetry and EPR dosimetry applied to tooth enamel. Based on real-case scenarios, dose estimates obtained from bioassay data as well as with biological and/or EPR dosimetry are compared and critically discussed. In most of the scenarios presented, concomitant external exposures were responsible for the greater portion of the received dose. As no assay is available which can discriminate between radiation of different types and different LETs on the basis of the type of damage induced, it is not possible to infer from these studies specific conclusions valid for incorporated radionuclides alone. The biological dosimetry assays and EPR techniques proved to be most applicable in cases when the radionuclides are almost homogeneously distributed in the body. No compelling evidence was obtained in other cases of extremely inhomogeneous distribution. Retrospective dosimetry needs to be optimized and further developed in order to be able to deal with real exposure cases, where a mixture of both external and internal exposures will be encountered most of the times.
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Affiliation(s)
- A Giussani
- BfS-Bundesamt für Strahlenschutz, Ingolstädter Landstr. 1, 85764, Oberschleißheim, Germany.
| | - M A Lopez
- CIEMAT - Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, Av.da Complutense 40, 28040, Madrid, Spain
| | - H Romm
- BfS-Bundesamt für Strahlenschutz, Ingolstädter Landstr. 1, 85764, Oberschleißheim, Germany
| | - A Testa
- ENEA Casaccia Research Center, Via Anguillarese 301, Santa Maria di Galeria, 00123, Rome, Italy
| | - E A Ainsbury
- Public Health England - Centre for Radiation, Chemical and Environmental Hazards, Chilton, Didcot, OX11 0RQ, Oxon, UK
| | - M Degteva
- Urals Research Center for Radiation Medicine (URCRM), Vorovskt str. 68A, Chelyabinsk, 454141, Russia
| | - S Della Monaca
- Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - G Etherington
- Public Health England - Centre for Radiation, Chemical and Environmental Hazards, Chilton, Didcot, OX11 0RQ, Oxon, UK
| | - P Fattibene
- Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - I Güclu
- Cekmece Nuclear Research and Training Center Radiobiology Unit Yarımburgaz, Turkish Atomic Energy Authority, Istanbul, Turkey
| | - A Jaworska
- DSA-Norwegian Radiation and Nuclear Safety Authority, Skøyen, P. O. Box 329, 0213, Oslo, Norway
| | - D C Lloyd
- Public Health England - Centre for Radiation, Chemical and Environmental Hazards, Chilton, Didcot, OX11 0RQ, Oxon, UK
| | - I Malátová
- SURO-National Radiation Protection Institute, Bartoskova 28, 14000, Prague, Czech Republic
| | - S McComish
- US Transuranium and Uranium Registries, Washington State University, Richland, WA, USA
| | - D Melo
- Melohill Technology, 1 Research Court, Rockville, MD, 20850, USA
| | - J Osko
- National Centre for Nuclear Research, A. Soltana 7, 05400, Otwock, Poland
| | - A Rojo
- ARN-Nuclear Regulatory Authority of Argentina, Av. del Libertador 8250, Buenos Aires, Argentina
| | - S Roch-Lefevre
- Institut de Radioprotection et de Sûreté Nucléaire, IRSN, Pôle Santé et Environnement, Direction de la Santé, Fontenay-aux-Roses, France
| | - L Roy
- Institut de Radioprotection et de Sûreté Nucléaire, IRSN, Pôle Santé et Environnement, Direction de la Santé, Fontenay-aux-Roses, France
| | - E Shishkina
- Urals Research Center for Radiation Medicine (URCRM), Vorovskt str. 68A, Chelyabinsk, 454141, Russia
- Chelyabinsk State University (ChelSU), 129, Bratiev Kashirinih Street, Chelyabinsk, 454001, Russia
| | - N Sotnik
- Southern Urals Biophysics Institute (SUBI), Ozyorsk, Chelyabinsk Region, 456780, Russia
| | - S Y Tolmachev
- US Transuranium and Uranium Registries, Washington State University, Richland, WA, USA
| | - A Wieser
- Institute of Radiation Medicine, Helmholtz Zentrum München, Ingolstädter Landstr. 1, 85764, Neuherberg, Germany
| | - C Woda
- Institute of Radiation Medicine, Helmholtz Zentrum München, Ingolstädter Landstr. 1, 85764, Neuherberg, Germany
| | - M Youngman
- Public Health England - Centre for Radiation, Chemical and Environmental Hazards, Chilton, Didcot, OX11 0RQ, Oxon, UK
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12
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Moffa A, Casale M, Fiore V, Rinaldi V, Giancaspro R, Lopez MA, Baptista P, Gelardi M, Cassano M. Impact of intranasal nebulized ectoine on morbidity and short-term quality of life after pediatric adenoidectomy. J BIOL REG HOMEOS AG 2020; 34:1213-1218. [PMID: 32666776 DOI: 10.23812/20-160-l-64] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- A Moffa
- Unit of Otolaryngology, University of Foggia, Foggia, Italy
| | - M Casale
- Integrated Sleep Surgery Team UCBM - Unit of Otolaryngology - Integrated Therapies in Otolaryngology, Campus Bio-Medico University, Rome, Italy
| | - V Fiore
- Unit of Otolaryngology, University of Foggia, Foggia, Italy
| | - V Rinaldi
- Integrated Sleep Surgery Team UCBM - Unit of Otolaryngology - Integrated Therapies in Otolaryngology, Campus Bio-Medico University, Rome, Italy
| | - R Giancaspro
- Unit of Otolaryngology, University of Foggia, Foggia, Italy
| | - M A Lopez
- Integrated Sleep Surgery Team UCBM - Unit of Otolaryngology - Integrated Therapies in Otolaryngology, Campus Bio-Medico University, Rome, Italy
| | - P Baptista
- Unit of Otolaryngology, Clinica Universitaria de Navarra, Pamplona, Spain
| | - M Gelardi
- Unit of Otolaryngology, University of Foggia, Foggia, Italy
| | - M Cassano
- Unit of Otolaryngology, University of Foggia, Foggia, Italy
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13
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Messer RK, Lopez MA, Senavirathne G, Yoder KE. Expression and Purification of Nuclease-Free Oxygen Scavenger Protocatechuate 3,4-Dioxygenase. J Vis Exp 2019. [PMID: 31762446 PMCID: PMC7552998 DOI: 10.3791/59599] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Single molecule (SM) microscopy is used in the study of dynamic molecular interactions of fluorophore labeled biomolecules in real time. However, fluorophores are prone to loss of signal via photobleaching by dissolved oxygen (O2). To prevent photobleaching and extend the fluorophore lifetime, oxygen scavenging systems (OSS) are employed to reduce O2. Commercially available OSS may be contaminated by nucleases that damage or degrade nucleic acids, confounding interpretation of experimental results. Here we detail a protocol for the expression and purification of highly active Pseudomonas putida protocatechuate-3,4-dioxygenase (PCD) with no detectable nuclease contamination. PCD can efficiently remove reactive O2 species by conversion of the substrate protocatechuic acid (PCA) to 3-carboxy-cis,cis-muconic acid. This method can be used in any aqueous system where O2 plays a detrimental role in data acquisition. This method is effective in producing highly active, nuclease free PCD in comparison with commercially available PCD.
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Affiliation(s)
- Ryan K Messer
- Cancer Biology and Genetics, College of Medicine, The Ohio State University
| | - Miguel A Lopez
- Cancer Biology and Genetics, College of Medicine, The Ohio State University
| | - Gayan Senavirathne
- Cancer Biology and Genetics, College of Medicine, The Ohio State University
| | - Kristine E Yoder
- Cancer Biology and Genetics, College of Medicine, The Ohio State University;
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14
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Moffa A, Fraccaroli F, Carbone S, Rinaldi V, Costantino A, Lopez MA, Cassano M, Casale M. Bromelain after oral or dental procedures: an update. J BIOL REG HOMEOS AG 2019; 33:1629-1634. [PMID: 31507135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Affiliation(s)
- A Moffa
- Unit of Otolaryngology, University of Foggia, Foggia, Italy
| | - F Fraccaroli
- Unit of Otolaryngology, UOS ORL TI, Campus Bio-Medico University, Rome, Italy
| | - S Carbone
- Unit of Otolaryngology, UOS ORL TI, Campus Bio-Medico University, Rome, Italy
| | - V Rinaldi
- Unit of Otolaryngology, UOS ORL TI, Campus Bio-Medico University, Rome, Italy
| | - A Costantino
- Unit of Otolaryngology, UOS ORL TI, Campus Bio-Medico University, Rome, Italy
| | - M A Lopez
- Unit of Otolaryngology, UOS ORL TI, Campus Bio-Medico University, Rome, Italy
| | - M Cassano
- Unit of Otolaryngology, University of Foggia, Foggia, Italy
| | - M Casale
- Unit of Otolaryngology, University of Foggia, Foggia, Italy
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15
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Alves JG, Fantuzzi E, Rühm W, Gilvin P, Vargas A, Tanner R, Rabus H, Lopez MA, Breustedt B, Harrison R, Stolarczyk L, Fattibene P, Woda C, Caresana M, Knežević Ž, Bottollier-Depois JF, Clairand I, Mayer S, Miljanic S, Olko P, Schuhmacher H, Stadtmann H, Vanhavere F. EURADOS education and training activities. J Radiol Prot 2019; 39:R37-R50. [PMID: 31307030 DOI: 10.1088/1361-6498/ab3256] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
This paper provides a summary of the Education and Training (E&T) activities that have been developed and organised by the European Radiation Dosimetry Group (EURADOS) in recent years and in the case of Training Courses over the last decade. These E&T actions include short duration Training Courses on well-established topics organised within the activity of EURADOS Working Groups (WGs), or one-day events integrated in the EURADOS Annual Meeting (workshops, winter schools, the intercomparison participants' sessions and the learning network, among others). Moreover, EURADOS has recently established a Young Scientist Grant and a Young Scientist Award. The Grant supports young scientists by encouraging them to perform research projects at other laboratories of the EURADOS network. The Award is given in recognition of excellent work developed within the WGs' work programme. Additionally, EURADOS supports the dissemination of knowledge in radiation dosimetry by promoting and endorsing conferences such as the individual monitoring (IM) series, the neutron and ion dosimetry symposia (NEUDOS) and contributions to E&T sessions at specific events.
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Affiliation(s)
- J G Alves
- EURADOS, EURADOS e.V. Postfach 1129, D-85758 Neuherberg, Germany. Universidade de Lisboa (UL), Instituto Superior Técnico (IST), Laboratório de Proteção e Segurança Radiológica (LPSR), Estrada Nacional 10, 2695-066 Bobadela LRS, Portugal. Departamento de Engenharia e Ciências Nucleares (DECN), Centro de Ciências e Tecnologias Nucleares (C2TN), do IST, Portugal
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16
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Rühm W, Bottollier-Depois JF, Gilvin P, Harrison R, Knežević Ž, Lopez MA, Tanner R, Vargas A, Woda C. The work programme of EURADOS on internal and external dosimetry. Ann ICRP 2018; 47:20-34. [PMID: 29664324 DOI: 10.1177/0146645318756224] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Since the early 1980s, the European Radiation Dosimetry Group (EURADOS) has been maintaining a network of institutions interested in the dosimetry of ionising radiation. As of 2017, this network includes more than 70 institutions (research centres, dosimetry services, university institutes, etc.), and the EURADOS database lists more than 500 scientists who contribute to the EURADOS mission, which is to promote research and technical development in dosimetry and its implementation into practice, and to contribute to harmonisation of dosimetry in Europe and its conformance with international practices. The EURADOS working programme is organised into eight working groups dealing with environmental, computational, internal, and retrospective dosimetry; dosimetry in medical imaging; dosimetry in radiotherapy; dosimetry in high-energy radiation fields; and harmonisation of individual monitoring. Results are published as freely available EURADOS reports and in the peer-reviewed scientific literature. Moreover, EURADOS organises winter schools and training courses on various aspects relevant for radiation dosimetry, and formulates the strategic research needs in dosimetry important for Europe. This paper gives an overview on the most important EURADOS activities. More details can be found at www.eurados.org .
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Affiliation(s)
- W Rühm
- a Department of Radiation Sciences, Institute for Radiation Protection, Helmholtz Centre Munich, Ingolstädter Landstr. 1, 85764 Neuherberg, Germany
| | | | | | | | | | - M A Lopez
- f Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, Spain
| | | | - A Vargas
- g Universitat Politècnica de Catalunya, Spain
| | - C Woda
- a Department of Radiation Sciences, Institute for Radiation Protection, Helmholtz Centre Munich, Ingolstädter Landstr. 1, 85764 Neuherberg, Germany
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17
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Senavirathne G, Lopez MA, Messer R, Fishel R, Yoder KE. Expression and purification of nuclease-free protocatechuate 3,4-dioxygenase for prolonged single-molecule fluorescence imaging. Anal Biochem 2018; 556:78-84. [PMID: 29932890 PMCID: PMC6076860 DOI: 10.1016/j.ab.2018.06.016] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 05/23/2018] [Accepted: 06/16/2018] [Indexed: 10/28/2022]
Abstract
Single-molecule (SM) microscopy is a powerful tool capable of visualizing individual molecules and events in real time. SM imaging may rely on proteins or nucleic acids labelled with a fluorophore. Unfortunately photobleaching of fluorophores leads to irreversible loss of signal, impacting the collection of data from SM experiments. Trace amounts of dissolved oxygen (O2) are the main cause of photobleaching. Oxygen scavenging systems (OSS) have been developed that decrease dissolved O2. Commercial OSS enzyme preparations are frequently contaminated with nucleases that damage nucleic acid substrates. In this protocol, we purify highly active Pseudomonas putida protocatechuate 3,4-dioxygenase (PCD) without nuclease contaminations. Quantitation of Cy3 photostability revealed that PCD with its substrate protocatechuic acid (PCA) increased the fluorophore half-life 100-fold. This low cost purification method of recombinant PCD yields an enzyme superior to commercially available OSS that is effectively free of nuclease activity.
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Affiliation(s)
- Gayan Senavirathne
- Department of Cancer Biology and Genetics, The Ohio State University Medical Center, Columbus, OH 43210, USA
| | - Miguel A. Lopez
- Department of Cancer Biology and Genetics, The Ohio State University Medical Center, Columbus, OH 43210, USA
| | - Ryan Messer
- Department of Cancer Biology and Genetics, The Ohio State University Medical Center, Columbus, OH 43210, USA
| | - Richard Fishel
- Department of Cancer Biology and Genetics, The Ohio State University Medical Center, Columbus, OH, 43210, USA.
| | - Kristine E. Yoder
- Department of Cancer Biology and Genetics, The Ohio State University Medical Center, Columbus, OH 43210, USA,To whom correspondence should be addressed. Tel: (614) 688-2106; , Correspondence may also be addressed to. Tel: (614) 292-2484;
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18
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Mackler RM, Lopez MA, Osterhage MJ, Yoder KE. Prototype foamy virus integrase is promiscuous for target choice. Biochem Biophys Res Commun 2018; 503:1241-1246. [PMID: 30017200 PMCID: PMC6119477 DOI: 10.1016/j.bbrc.2018.07.031] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Accepted: 07/06/2018] [Indexed: 12/11/2022]
Abstract
Retroviruses have two essential activities: reverse transcription and integration. The viral protein integrase (IN) covalently joins the viral cDNA genome to the host DNA. Prototype foamy virus (PFV) IN has become a model of retroviral intasome structure. However, this retroviral IN has not been well-characterized biochemically. Here we compare PFV IN to previously reported HIV-1 IN activities and discover significant differences. PFV IN is able to utilize the divalent cation calcium during strand transfer while HIV-1 IN is not. HIV-1 IN was shown to completely commit to a target DNA within 1 min, while PFV IN is not fully committed after 60 min. These results suggest that PFV IN is more promiscuous compared to HIV-1 IN in terms of divalent cation and target commitment.
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Affiliation(s)
- R M Mackler
- Department of Cancer Biology and Genetics, Ohio State University College of Medicine, 460 West 12(th)Ave, Columbus, OH, 43210, USA
| | - M A Lopez
- Department of Cancer Biology and Genetics, Ohio State University College of Medicine, 460 West 12(th)Ave, Columbus, OH, 43210, USA
| | - M J Osterhage
- Department of Cancer Biology and Genetics, Ohio State University College of Medicine, 460 West 12(th)Ave, Columbus, OH, 43210, USA
| | - K E Yoder
- Department of Cancer Biology and Genetics, Ohio State University College of Medicine, 460 West 12(th)Ave, Columbus, OH, 43210, USA.
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19
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Breustedt B, Blanchardon E, Castellani CM, Etherington G, Franck D, Giussani A, Hofmann W, Lebacq AL, Li WB, Noßke D, Lopez MA. EURADOS work on internal dosimetry. Ann ICRP 2018; 47:75-82. [PMID: 29664321 DOI: 10.1177/0146645318756232] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
European Radiation Dosimetry Group (EURADOS) Working Group 7 is a network on internal dosimetry that brings together researchers from more than 60 institutions in 21 countries. The work of the group is organised into task groups that focus on different aspects, such as development and implementation of biokinetic models (e.g. for diethylenetriamine penta-acetic acid decorporation therapy), individual monitoring and the dose assessment process, Monte Carlo simulations for internal dosimetry, uncertainties in internal dosimetry, and internal microdosimetry. Several intercomparison exercises and training courses have been organised. The IDEAS guidelines, which describe - based on the International Commission on Radiological Protection's (ICRP) biokinetic models and dose coefficients - a structured approach to the assessment of internal doses from monitoring data, are maintained and updated by the group. In addition, Technical Recommendations for Monitoring Individuals for Occupational Intakes of Radionuclides have been elaborated on behalf of the European Commission, DG-ENER (TECHREC Project, 2014-2016, coordinated by EURADOS). Quality assurance of the ICRP biokinetic models by calculation of retention and excretion functions for different scenarios has been performed and feedback was provided to ICRP. An uncertainty study of the recent caesium biokinetic model quantified the overall uncertainties, and identified the sensitive parameters of the model. A report with guidance on the application of ICRP biokinetic models and dose coefficients is being drafted at present. These and other examples of the group's activities, which complement the work of ICRP, are presented.
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Affiliation(s)
- B Breustedt
- a Karlsruhe Institute of Technology, Safety and Environment - Radioanalytical Laboratories, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - E Blanchardon
- b Institut de Radioprotection et de Sûreté Nucléaire, France
| | - C-M Castellani
- c ENEA Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Radiation Protection Institute, Italy
| | | | - D Franck
- b Institut de Radioprotection et de Sûreté Nucléaire, France
| | - A Giussani
- e Federal Office for Radiation Protection, Germany
| | - W Hofmann
- f University of Salzburg, Department of Chemistry and Physics of Materials, Austria
| | - A-L Lebacq
- g SCK-CEN, Belgian Nuclear Research Centre, Belgium
| | - W B Li
- h Helmholtz Zentrum München - German Research Centre for Environmental Health, Germany
| | - D Noßke
- i Federal Office for Radiation Protection, Germany (retired)
| | - M A Lopez
- j Centro de Investigaciones Energéticas Medioambientales y Tecnológicas, Spain
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20
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Abstract
A defining feature and necessary step of the retrovirus life cycle is the integration of the viral genome into the host genome. All retroviruses encode an integrase (IN) enzyme that catalyzes the covalent joining of viral to host DNA, which is known as strand transfer. Integration may be modeled in vitro with recombinant retroviral IN and DNA oligomers mimicking the ends of the viral genome. In order to more closely recapitulate the integration reaction that occurs in vivo, integration complexes are assembled from recombinant IN and synthetic oligomers by dialysis in a reduced salt concentration buffer. The integration complex, called an intasome, may be purified by size exclusion chromatography. In the case of prototype foamy virus (PFV), the intasome is a tetramer of IN and two DNA oligomers and is readily separated from monomeric IN and free oligomer DNA. The integration efficiency of PFV intasomes may be assayed under a variety of experimental conditions to better understand the dynamics and mechanics of retroviral integration.
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Affiliation(s)
- Randi M Mackler
- Department of Cancer Biology and Genetics, The Ohio State University College of Medicine
| | - Miguel A Lopez
- Department of Cancer Biology and Genetics, The Ohio State University College of Medicine
| | - Kristine E Yoder
- Department of Cancer Biology and Genetics, The Ohio State University College of Medicine;
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21
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Lopez MA, Manzulli N, D'Angelo A, Candotto V, Casale M, Lauritano D. The use of hyaluronic acid as an adjuvant in the management of mucositis. J BIOL REG HOMEOS AG 2017; 31:115-118. [PMID: 29202570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In recent years, with an increase in the number of implants, there has been a related increase in cases of pathologies related to infections around the implant site and on the implant surface i.e. mucositis and peri-implantitis. The purpose of this pilot study is to evaluate the potential efficacy of nebulized hyaluronic acid in the management of mucositis. The results of the statistical analysis demonstrate that there was no difference between the pocket depth as measured in the treated sites at time 0 (pre-treatment) and time 1 (15 days weeks post-treatment). However, the difference between bleeding on probing as measured at time 0 and time 1 indicated an improvement on both sides, with a slightly greater improvement on the side treated with HA.
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Affiliation(s)
| | | | | | - V Candotto
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | - M Casale
- Unit of Otolaryngology, University Campus Bio-Medico, Rome, Italy
| | - D Lauritano
- Department of Medicine and Surgery, University of Milan-Bicocca, Monza, Italy
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22
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Lopez MA, Manzulli N, D'Angelo A, Candotto V, Casale M, Lauritano D. The use of hyaluronic acid as an adjuvant in the management of gingivitis. J BIOL REG HOMEOS AG 2017; 31:111-118. [PMID: 29202569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Recently, a specifically designed device was proposed that is able to nebulize particles with a diameter of approximately 16 micrometres to be used mainly in the management of diseases of the upper airway respiratory tract. The purpose of this pilot study is to evaluate the potential efficacy of nebulized hyaluronic acid in the management of gingivitis. The results of the statistical analysis demonstrate that there was no difference between the pocket depth as measured in the treated sites at time 0 (pre-treatment) and time 1 (15 days post-treatment). However, the difference between bleeding on probing as measured at time 0 and time 1 indicated an improvement on both sides, with a slightly greater improvement on the side treated with HA.
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Affiliation(s)
| | | | | | - V Candotto
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | - M Casale
- Unit of Otolaryngology, University Campus Bio-Medico, Rome, Italy
| | - D Lauritano
- Department of Medicine and Surgery, University of Milan-Bicocca, Monza, Italy
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23
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Lopez MA, Casale M, Candotto V, Papalia R, Bressi F, Carinci F. The use of hyaluronic acid as a support of two different micronized biomaterials in crestal sinus lift procedures. A report on two case studies with volume comparison. J BIOL REG HOMEOS AG 2017; 31:129-138. [PMID: 29202573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In the context of the trans crestal maxillary sinus lift, a wide variety of biomaterials have been used to fill the sub-antral space over the years. The materials that have a pasty consistency and are smooth and free from lumps are the most suitable to come into contact with the Schneiderian membrane which, if torn, cannot perform its graft containment function. In this study, a micronized heterologous bone in a collagen matrix of two different percentages was used in order to fill the maxillary sinus. Before using biomaterial as filler, a spray form of hyaluronic acid was used to disinfect the surgical site before and after the surgery, along with more consistent and pasty form of gel of hyaluronic acid being used in order to facilitate the detachment of the membrane. The surgical procedures were designed and carried out using computer-planned surgery. The filling volume obtained was measured with a comparative software programme and using an ellissoid formula. This technique allows the surgery to be performed in a way that is both minimally traumatic and invasive, fully careful of the membrane and represents a viable alternative to those surgical techniques for crestal sinus lift currently in use.
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Affiliation(s)
| | - M Casale
- Otolaryngology Unit, University Campus Bio-Medico, Rome, Italy
| | - V Candotto
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Italy
| | - R Papalia
- University Campus Bio-Medico of Rome, Department of Orthopedics and Traumatology
| | - F Bressi
- University Campus Bio-Medico of Rome, Physical and Rehabilitation Medicine
| | - F Carinci
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Italy
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24
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Lopez MA, Manzulli N, D'Angelo A, Lauritano D, Casale M, Candotto V. The use of hyaluronic acid as an adjuvant in the management of periodontitis. J BIOL REG HOMEOS AG 2017; 31:119-122. [PMID: 29202571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The emollient and restructuring action exerted on the mucous membranes by hyaluronic acid is of particular significance. This is thanks to its reparative (it stimulates angiogenesis) and soothing properties (hyaluronic acid is used in wound care to improve the processes of wound healing), which are effective in treating the symptoms of local inflammation and irritation. The purpose of this clinical trial is to evaluate the potential efficacy of nebulized hyaluronic acid in the management of chronic periodontitis in adults. The results of the statistical analysis demonstrate that there was a slight improvement in the measurement of pocket depth in the side treated with HA at time 0 (pre-treatment) and time 1 (15 days post-treatment). Furthermore, the difference between bleeding on probing as measured at time 0 and time 1 indicated an improvement on both sides, with a slightly greater improvement on the side treated with HA.
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Affiliation(s)
| | | | | | - D Lauritano
- Department of Medicine and Surgery, University of Milan-Bicocca, Monza, Italy
| | - M Casale
- Unit of Otolaryngology, University Campus Bio-Medico, Rome, Italy
| | - V Candotto
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
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25
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Casale M, Vella P, Moffa A, Grimaldi V, Sabatino L, Rinaldi V, Lopez MA, Baptista P, Salvinelli F. The efficacy of topical hyaluronan in rhinosinusitis: a systematic review. J BIOL REG HOMEOS AG 2017; 31:71-80. [PMID: 29202565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Rhinosinusitis is one of the most common inflammatory conditions of the nasal cavity and paranasal sinuses and is one of the most common causes of absence from work and for visits to the family doctor. The treatment strategy in both acute rhinosinusitis (ARS) and chronic rhinosinusitis (CRS) is to reduce the severity of the symptoms, minimize the duration of the disease and prevent complications. Topical therapy has become an important tool in otolaryngologists armamentarium for rhinosinusitis treatment. Recently, topical hyaluronic acid (HA), the major component of many extracellular matrices that promotes tissue healing, including activation and moderation of the inflammatory responses, cell proliferation, migration and angiogenesis, has been proposed for ARS and CRS adjuvant tool. The aim of the study is to systematically review the published literature regarding all the therapeutic effects of HA on the ARS and CRS. Relevant published studies were found in PubMed, Google Scholar and Ovid, using a combined keyword search or medical subject headings. At the end of our study selection process, 5 relevant publications were included: 2 of them investigated the potential role of HA in reducing symptoms and preventing exacerbations of CRS in adult population, two of them in paediatric patients affected by upper respiratory tract infections and one of them in cystic fibrosis patients with bacterial rhinopharyngitis. Data deriving from the present review of 5 clinical studies showed that the use of topical HA represents a relevant therapeutic advance in rhinosinusitis to minimize symptoms and prevent reacutization with a significant improvement of their quality of life, as it avoids systemic side effects and increases local drug activity. Further studies on larger populations and with new specific nebulization devices for upper airway are needed to confirm these encouraging results.
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Affiliation(s)
- M Casale
- Unit of Otolaryngology, University Campus Bio-Medico Of Rome
| | - P Vella
- Unit of Otolaryngology, University Campus Bio-Medico Of Rome
| | - A Moffa
- Unit of Otolaryngology, University Campus Bio-Medico Of Rome
| | - V Grimaldi
- Pediatric, Private Practitioner, Rome, Italy
| | - L Sabatino
- Unit of Otolaryngology, University Campus Bio-Medico Of Rome
| | - V Rinaldi
- Unit of Otolaryngology, University Campus Bio-Medico Of Rome
- Department of Clinical Sciences and Community Health, Università degli Studi di Milano, fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico
| | - M A Lopez
- Dentist, Oral Surgeon, Private Practitioner, Rome, Italy
| | - P Baptista
- Unit of Otolaryngology, University of Navarra, Campus Universitario, Pamplona, Spain
| | - F Salvinelli
- Unit of Otolaryngology, University Campus Bio-Medico Of Rome
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26
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Casale M, Pace A, Moffa A, Vella P, Sabatino L, Lopez MA, Salvinelli F. Post-operative nebulized sodium hyaluronate versus spray after functional endoscopic sinus surgery for chronic rhinosinusitis. J BIOL REG HOMEOS AG 2017; 31:81-89. [PMID: 29202566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We prospectively evaluated the efficacy of nebulized Hyaluronic Acid (HA) as an adjuvant treatment to hasten the improvement of nasal respiration and to minimize patients discomfort in the postoperative functional endoscopic sinus surgery (FESS) for chronic rhino-sinusitis (CRS). We enrolled 33 CRS adult patients who underwent endoscopic functional sinus surgery. They were randomly assigned into two groups: Spray-Sol group (18 patients) with HA nebulized with a new nasal device named Spray-Sol and Spray group (15 patients) with a HA nebulized with a common spray. Both groups were treated twice daily for 4 weeks. CRS questionnaire, Visual analogic scale (VAS) and nasal endoscopy were used to assess the outcomes of the treatments during the 1st month of follow up. The mean VAS score of the Spray-Sol group at 2 weeks was significantly lower than the Spray group (5.2±2.1 vs 10.5±3.7; p less than 0.05). The VAS score remained significantly lower in the Spray-Sol group also at the 4 weeks (2.9±0.8 vs 6.1±3.4; p less than 0.05). The CRS score was significantly better at week 2 and 4 in both groups in comparison with baseline values, with better results in the Spray-Sol group. Since the first visit the Spray-Sol group also showed significantly lower crusts, edema and secretions than the Spray group (p less than 0.05). The compliance to treatment was similar in both groups. The results of this prospective study suggest a role nebulized of HA through new device (Spray-sol) as a supportive treatment for faster improvement of nasal respiration, also minimizing patient discomfort, promoting nasal mucosa healing in postoperative FESS for CRS.
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Affiliation(s)
- M Casale
- Unit of Otolaryngology, University Campus Bio-Medico, Rome, Italy
| | - A Pace
- Unit of Otolaryngology, University Campus Bio-Medico, Rome, Italy
| | - A Moffa
- Unit of Otolaryngology, University Campus Bio-Medico, Rome, Italy
| | - P Vella
- Unit of Otolaryngology, University Campus Bio-Medico, Rome, Italy
| | - L Sabatino
- Unit of Otolaryngology, University Campus Bio-Medico, Rome, Italy
| | - M A Lopez
- Dentist, Oral Surgeon, Private Practitioner, Rome, Italy
| | - F Salvinelli
- Unit of Otolaryngology, University Campus Bio-Medico, Rome, Italy
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Palmieri A, Avantaggiato A, Cura F, Casale M, Lopez MA, Bressi F, Scapoli L. Biorevitalization: an in vitro study on gingival fibroblast. J BIOL REG HOMEOS AG 2017; 31:147-153. [PMID: 29202575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Bio-revitalization is a therapy commonly used in aesthetic medicine to improve skin quality by di¬rectly integrating hyaluronic acid alone or added to other molecules (i.e. vitamins) through intradermal injections. These injections are not aimed to fill roughness but to achieve extracellular matrix optimi¬zation. The injective medical devices used in aesthetic medicine differ for hyaluronic acid content and for the presence of additional molecules that characterize the formulation of a particular company. The aim of the present study is to compare HA with different compounds in regard to their effects on cultured fibroblasts over time by using RT-PCR and a panel of genes (ELN, DSP, FN1, FBN1, ITGA1, ITGA2, ITGA5, ITGB1, COL1A1, COL3A1) involved in connective integrity. Bio-revitalization is able to activate genes involved in tissue integrity. The reported data add new insight in the comprehension of molecular mechanism related to BR. These preliminary data have to be developed through additional experiments. However, an injective therapy seems to be effective in gingival fibroblast stimulation.
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Affiliation(s)
- A Palmieri
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | - A Avantaggiato
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | - F Cura
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | - M Casale
- Otolaryngology Unit, University Campus Bio-Medico, Rome, Italy
| | | | - F Bressi
- University Campus Bio-Medico of Rome, Physical and Rehabilitation Medicine
| | - L Scapoli
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
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Casale M, Moffa A, Vella P, Rinaldi V, Lopez MA, Grimaldi V, Salvinelli F. Systematic review: the efficacy of topical hyaluronic acid on oral ulcers. J BIOL REG HOMEOS AG 2017; 31:63-69. [PMID: 29202564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The management of oral ulcers is a challenge for clinicians. Whilst there is widespread use of topical corticosteroids, antibiotics and antimicrobial, there is only weak evidence for the effectiveness of any of the topical treatments. Hyaluronic Acid (HA) has been recently proposed for topical administration in the treatment of oral ulcers and other painful oral lesions. The aim of the study is to systematically review the published literature regarding all the therapeutic effects of HA on painful oral lesions such as oral ulcers and oral lichen planus. Relevant published studies were found in PubMed, Google Scholar and Ovid using a combined keyword search or medical subject headings. At the end of our study selection process, 4 relevant publications were included: two regarding oral lichen planus, one Behcets Disease and Recurrent Aphthous ulcer and one in oral ulcers in general. Both subjective parameters such as healing period, VAS for pain and objective assessments such as number of ulcers, maximal area of ulcer and inflammatory signs, significantly improved after HA treatment. These data allow us to suggest that HA may play a pivotal role in the treatment of oral ulcers.
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Affiliation(s)
- M Casale
- Unit of Otolaryngology, University Campus Bio-Medico, Rome, Italy
| | - A Moffa
- Unit of Otolaryngology, University Campus Bio-Medico, Rome, Italy
| | - P Vella
- Unit of Otolaryngology, University Campus Bio-Medico, Rome, Italy
| | - V Rinaldi
- Unit of Otolaryngology, University Campus Bio-Medico, Rome, Italy
- Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico
| | - M A Lopez
- Dentist, Oral Surgeon, Private Practitioner, Rome, Italy
| | | | - F Salvinelli
- Unit of Otolaryngology, University Campus Bio-Medico, Rome, Italy
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29
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Lopez MA, Manzulli N, D'Angelo A, Lauritano D, Papalia R, Candotto V. The use of hyaluronic acid as an adjuvant in the management of peri-implantitis. J BIOL REG HOMEOS AG 2017; 31:123-127. [PMID: 29202572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
It is well known in dentistry that there are numerous chronic conditions that require ongoing and constant management over time, the most noteworthy being periodontal disease, gingivitis and periodontitis. Yet, in recent years, with the increase in the number of implants being placed, mucositis and peri-implantitis have become more and more prevalent pathologies. The results of the statistical analysis demonstrate that there was a slight difference between the pocket depth as measured in the treated sites at time 0 (pre-treatment) and time 1 (15 days post-treatment), although the difference was so small as to render it statistically irrelevant. Bleeding on probing as measured at time 0 and time 1 indicated an improvement on both sides, but with no greater improvement noted on the side treated with HA.
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Affiliation(s)
| | | | | | - D Lauritano
- Department of Medicine and Surgery, University of Milan-Bicocca, Monza, Italy
| | - R Papalia
- University Campus Bio-Medico of Rome, Department of Orthopedics and Traumatology
| | - V Candotto
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
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30
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Lopez MA, Mackler RM, Altman MP, Yoder KE. Detection and Removal of Nuclease Contamination During Purification of Recombinant Prototype Foamy Virus Integrase. J Vis Exp 2017. [PMID: 29286489 DOI: 10.3791/56605] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
The integrase (IN) protein of the retrovirus prototype foamy virus (PFV) is a model enzyme for studying the mechanism of retroviral integration. Compared to IN from other retroviruses, PFV IN is more soluble and more amenable to experimental manipulation. Additionally, it is sensitive to clinically relevant human immunodeficiency virus (HIV-1) IN inhibitors, suggesting that the catalytic mechanism of PFV IN is similar to that of HIV-1 IN. IN catalyzes the covalent joining of viral complementary DNA (cDNA) to target DNA in a process called strand transfer. This strand transfer reaction introduces nicks to the target DNA. Analysis of integration reaction products can be confounded by the presence of nucleases that similarly nick DNA. A bacterial nuclease has been shown to co-purify with recombinant PFV IN expressed in Escherichia coli (E. coli). Here we describe a method to isolate PFV IN from the contaminating nuclease by heparin affinity chromatography. Fractions are easily screened for nuclease contamination with a supercoiled plasmid and agarose gel electrophoresis. PFV IN and the contaminating nuclease display alternative affinities for heparin sepharose allowing a nuclease-free preparation of recombinant PFV IN suitable for bulk biochemical or single molecule analysis of integration.
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Affiliation(s)
- Miguel A Lopez
- Department of Cancer Biology and Genetics, The Ohio State University College of Medicine
| | - Randi M Mackler
- Department of Cancer Biology and Genetics, The Ohio State University College of Medicine
| | - Matthew P Altman
- Department of Cancer Biology and Genetics, The Ohio State University College of Medicine
| | - Kristine E Yoder
- Department of Cancer Biology and Genetics, The Ohio State University College of Medicine;
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31
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Lopez MA, Lico S, Casale M, Ormanier Z, Carinci F. The use of various biomaterials in computer-guided crestal sinus lift procedures. A report on two case studies with volume comparison. Oral Implantol (Rome) 2017; 9:89-97. [PMID: 28042436 DOI: 10.11138/orl/2016.9.2.089] [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] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
PURPOSE In the context of the transcrestal maxillary sinus lift a wide variety of biomaterials have been used to fill the subantral space over the years. In this study, two types of biomaterials were used in order to fill the maxillary sinus: a nano-crystallized hydroxyapatite in an aqueous solution and a micronized heterologous bone in a collagen matrix. MATERIALS AND METHODS The surgical procedures were designed and carried out using computer-guided surgery. The filling volume obtained was measured with a comparative software program. RESULTS A ≥ 6 millimeter augmentation of osseous volume was obtained. This result is comparable to those obtained in lifts where conventional techniques were applied. The technique used was very precise and the difference between the projected and clinical outcome of the implant position had an average of less than 0.3 millimeters. CONCLUSIONS This technique allows for the surgery to be performed in a way which is both minimally traumatic and invasive, and represents a viable alternative to those surgical techniques for crestal sinus lift currently in use.
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Affiliation(s)
| | - S Lico
- Private practice, Rome, Italy
| | - M Casale
- Unit of Otolaryngology, University Campus Bio-Medico, Rome, Italy
| | - Z Ormanier
- Department of Oral Rehabilitation, Tel-Aviv University, Tel-Aviv, Israel
| | - F Carinci
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
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32
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Andreasi Bassi M, Lopez MA, Andrisani C, Ormanier Z, Gargari M. Full arch rehabilitation in severe maxillary atrophy with palatal approach implant placement: a case report. Oral Implantol (Rome) 2017; 9:115-122. [PMID: 28042439 DOI: 10.11138/orl/2016.9.3.115] [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] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
PURPOSE The edentulous severely atrophic maxilla, as consequence of alveolar bone resorption and pneumatisation of the maxillary sinus, represents a serious limitation to the implant rehabilitation. Implants insertion via palatal approach (PA), in combination with relatively minimally invasive techniques aimed at increasing bone volume without the use of autologous bone harvesting is a valid alternative among the options for the rehabilitation of the upper jaw. CLINICAL CASE In a 70-year-old female, with a severe maxillary atrophy, 6 spiral taper implants were placed with the PA, combined with the bilateral transcrestal elevation of both the sinus floors and nasal cavities; a further GBR, with resorbable pericardium membrane covering a termoplastic allograft associated to a xenograft, was performed. The second stage was performed after 6 months. Implant prosthetic functionalization was carried out in 4 months by placing the removable prosthesis in direct contact with the healing cup screws. After that period the case was finalized with a hybrid prosthesis. Clinical and radiographic follow-ups were carried out at 6 months and at one year after prosthetic finalization, during which no pathological signs were recorded. CONCLUSIONS The PA implant insertion described by the Authors, combined with bone augmentation procedures, performed in the same stage, may represent a valid and reliable solution to rehabilitate maxillary edentulous patients.
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Affiliation(s)
| | | | | | - Z Ormanier
- Department of Oral Rehabilitation, Tel-Aviv University, Tel-Aviv, Israel
| | - M Gargari
- Department of Clinical Sciences and Translational Medicine, University of "Tor Vergata", Rome, Italy; Department of dentistry "Fra G.B. Orsenigo - Ospedale San Pietro F.B.F.", Rome, Italy
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Lopez MA, Merchant M, Postlethwaite D, Tyson N. Subdermal contraceptive implant: summary of “typical use” adolescent experience in a managed care setting. Contraception 2016. [DOI: 10.1016/j.contraception.2016.07.120] [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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34
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Ayuso T, Marzo-Sola ME, Castillo-Trivino T, Soriano G, Otano MA, Lopez MA, Croitoru IM, Olascoaga J. [Fingolimod: effectiveness and safety in routine clinical practice. An observational, retrospective, multi-centre study in Navarra, Gipuzkoa and La Rioja]. Rev Neurol 2016; 63:S5-S11. [PMID: 27658434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
AIM To evaluate the effectiveness and safety of fingolimod in clinical practice in Navarra, Gipuzkoa and La Rioja regions. PATIENTS AND METHODS We conducted a retrospective multi-centre study with recurrent multiple sclerosis patients treated with fingolimod, following the product data sheet. The following data were evaluated: annualised relapse rate (ARR), percentage of patients free from relapses, disability using the Expanded Disability Status Scale (EDSS) and the percentage of patients without gadolinium-enhancing lesions. RESULTS A total of 113 patients were treated with fingolimod: 6% were naive, and 58% and 35% were patients previously treated with an immunomodulator and natalizumab, respectively. Fingolimod lowered the ARR after the first (67%; 1 to 0.3; p < 0.0001) and second (89%; 1 to 0.1; p < 0.0001) years of treatment, and thus the number of patients free from relapses during the treatment increased. The baseline EDSS was 3 and after treatment with fingolimod was 2.5 in both years. The percentage of patients without gadolinium-enhancing lesions after the first year of treatment was 77%. Similar results were observed in naive patients and in those previously treated with an immunomodulator. In patients previously treated with natalizumab no changes were observed following the treatment. CONCLUSIONS The use of fingolimod in clinical practice showed an effectiveness similar to that observed in clinical trials. There were no changes in the ARR after changing from natalizumab, and only one patient presented a 'relapse' after withdrawal of natalizumab. Fingolimod acts like a safe drug, with scarce side effects and a low percentage of drop-outs.
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Affiliation(s)
- T Ayuso
- Complejo Hospitalario de Navarra , Pamplona, Espana
| | - M E Marzo-Sola
- Complejo Hospitalario San Millan-San Pedro, 26004 Logrono, Espana
| | | | - G Soriano
- Complejo Hospitalario de Navarra , Pamplona, Espana
| | - M A Otano
- Complejo Hospitalario de Navarra , Pamplona, Espana
| | - M A Lopez
- Complejo Hospitalario San Millan-San Pedro, 26004 Logrono, Espana
| | | | - J Olascoaga
- Hospital Donostia, 20014 San Sebastian, Espana
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35
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Lopez MA, Fojtik P, Franck D, Osko J, Gerstmann U, Scholl C, Lebacq AL, Breustedt B, Del Risco Norrlid L. LESSONS LEARNED FROM THE EURADOS SURVEY ON INDIVIDUAL MONITORING DATA AND INTERNAL DOSE ASSESSMENTS OF FOREIGNERS EXPOSED IN JAPAN FOLLOWING THE FUKUSHIMA DAIICHI NPP ACCIDENT. Radiat Prot Dosimetry 2016; 170:402-406. [PMID: 26705360 DOI: 10.1093/rpd/ncv510] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Accepted: 11/09/2015] [Indexed: 06/05/2023]
Abstract
European Radiation Dosimetry Group e.V. (EURADOS) survey on individual monitoring data and dose assessment has been carried out for 550 foreigners returning home after being exposed in Japan to intakes of radionuclides (mainly (131)I, (132)I, (132)Te, (134)Cs and (137)Cs) as a consequence of the Fukushima Daiichi NPP accident. In vivo and in vitro measurements were performed in their respective countries at an early stage after that accident. Intakes of radionuclides were detected in 208 persons from Europe and Canada, but the committed effective dose E(50) was below the annual dose limit for the public (<1 mSv) in all the cases. Lessons learned from this EURADOS survey are presented here regarding not only internal dosimetry issues, but also the management of the emergency situation, the perception of the risk of health effects due to radiation and the communication with exposed persons who showed anxiety and lack of trust in monitoring data and dose assessments.
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Affiliation(s)
- M A Lopez
- CIEMAT, Centro de Investigaciones Energéticas Medioambientales y Tecnologicas, Avda. Complutense 40, Madrid 28040, Spain
| | - P Fojtik
- SÚRO, Bartoškova 28, Prague 4 140 00, Czech Republic
| | - D Franck
- IRSN, Institut de Radioprotection et de Sûreté Nucléaire, IRSN/PRP-HOM/SDI/LEDI, BP-17, Fontenay-aux-Roses 92262, France
| | - J Osko
- NCBJ, National Centre for Nuclear Research, Rad. Prot. Measurement Lab. A. Sołtana, Otwock 705-400, Poland
| | - U Gerstmann
- BfS, Bundesamt für Strahlenschutz, Ingolstädter Landstraße 1, Neuherberg 85764, Germany
| | - C Scholl
- LIA, NRW, Ulenbergstr. 127-131, Düsseldorf 40225, Germany
| | - A L Lebacq
- SCK-CEN, Belgian Nuclear Research Centre, Boeretang 200, Mol 2400, Belgium
| | - B Breustedt
- KIT, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen 76344, Germany
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Lopez MA, Martin R, Hernandez C, Navarro JF, Navarro T, Perez B, Sierra I. THE CHALLENGE OF CIEMAT INTERNAL DOSIMETRY SERVICE FOR ACCREDITATION ACCORDING TO ISO/IEC 17025 STANDARD, FOR IN VIVO AND IN VITRO MONITORING AND DOSE ASSESSMENT OF INTERNAL EXPOSURES. Radiat Prot Dosimetry 2016; 170:31-34. [PMID: 26433182 DOI: 10.1093/rpd/ncv387] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The accreditation of an Internal Dosimetry Service (IDS) according to ISO/IEC 17025 Standard is a challenge. The aim of this process is to guarantee the technical competence for the monitoring of radionuclides incorporated in the body and for the evaluation of the associated committed effective dose E(50). This publication describes the main accreditation issues addressed by CIEMAT IDS regarding all the procedures involving good practice in internal dosimetry, focussing in the difficulties to ensure the traceability in the whole process, the appropriate calculation of detection limit of measurement techniques, the validation of methods (monitoring and dose assessments), the description of all the uncertainty sources and the interpretation of monitoring data to evaluate the intake and the committed effective dose.
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Affiliation(s)
- M A Lopez
- Radiation Dosimetry Unit, CIEMAT, Centro de Investigaciones Energéticas Medioambientales y Tecnológicas, Avda. Complutense 40, 28040 Madrid, Spain
| | - R Martin
- Radiation Dosimetry Unit, CIEMAT, Centro de Investigaciones Energéticas Medioambientales y Tecnológicas, Avda. Complutense 40, 28040 Madrid, Spain
| | - C Hernandez
- Radiation Dosimetry Unit, CIEMAT, Centro de Investigaciones Energéticas Medioambientales y Tecnológicas, Avda. Complutense 40, 28040 Madrid, Spain
| | - J F Navarro
- Radiation Dosimetry Unit, CIEMAT, Centro de Investigaciones Energéticas Medioambientales y Tecnológicas, Avda. Complutense 40, 28040 Madrid, Spain
| | - T Navarro
- Radiation Dosimetry Unit, CIEMAT, Centro de Investigaciones Energéticas Medioambientales y Tecnológicas, Avda. Complutense 40, 28040 Madrid, Spain
| | - B Perez
- Radiation Dosimetry Unit, CIEMAT, Centro de Investigaciones Energéticas Medioambientales y Tecnológicas, Avda. Complutense 40, 28040 Madrid, Spain
| | - I Sierra
- Radiation Dosimetry Unit, CIEMAT, Centro de Investigaciones Energéticas Medioambientales y Tecnológicas, Avda. Complutense 40, 28040 Madrid, Spain
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Breustedt B, Broggio D, Gomez-Ros JM, Leone D, Marzocchi O, Poelz S, Shutt A, Lopez MA. THE EURADOS-KIT TRAINING COURSE ON MONTE CARLO METHODS FOR THE CALIBRATION OF BODY COUNTERS. Radiat Prot Dosimetry 2016; 170:446-450. [PMID: 27103642 DOI: 10.1093/rpd/ncw085] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Monte Carlo (MC) methods are numerical simulation techniques that can be used to extend the scope of calibrations performed in in vivo monitoring laboratories. These methods allow calibrations to be carried out for a much wider range of body shapes and sizes than would be feasible using physical phantoms. Unfortunately, nowadays, this powerful technique is still used mainly in research institutions only. In 2013, EURADOS and the in vivo monitoring laboratory of Karlsruhe Institute of Technology (KIT) organized a 3-d training course to disseminate knowledge on the application of MC methods for in vivo monitoring. It was intended as a hands-on course centered around an exercise which guided the participants step by step through the calibration process using a simplified version of KIT's equipment. Only introductory lectures on in vivo monitoring and voxel models were given. The course was based on MC codes of the MCNP family, widespread in the community. The strong involvement of the participants and the working atmosphere in the classroom as well as the formal evaluation of the course showed that the approach chosen was appropriate. Participants liked the hands-on approach and the extensive course materials on the exercise.
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Affiliation(s)
- B Breustedt
- Safety and Environment, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - D Broggio
- Institut de Radioprotection et de Sûreté Nucléaire, IRSN/PRP-HOM/S/LEDI, BP-17 F-92262 Fontenay-aux-Roses, France
| | | | - D Leone
- Institute for Nuclear Waste Disposal, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - O Marzocchi
- European Patent Office, Patentlaan 1, 2288EE Rijswijk, the Netherlands
| | - S Poelz
- Institute for Nuclear Waste Disposal, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - A Shutt
- PHE, CRCE, Chilton, Didcot, Oxon, OX11 0RQ, UK
| | - M A Lopez
- CIEMAT, Av. Complutense 40, 28040 Madrid, Spain
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Etherington G, Bérard P, Blanchardon E, Breustedt B, Castellani CM, Challeton-de Vathaire C, Giussani A, Franck D, Lopez MA, Marsh JW, Nosske D. TECHNICAL RECOMMENDATIONS FOR MONITORING INDIVIDUALS FOR OCCUPATIONAL INTAKES OF RADIONUCLIDES. Radiat Prot Dosimetry 2016; 170:8-12. [PMID: 26464525 DOI: 10.1093/rpd/ncv395] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The TECHREC project, funded by the European Commission, will provide Technical Recommendations for Monitoring Individuals for Occupational Intakes of Radionuclides It is expected that the document will be published by the European Commission as a report in its Radiation Protection Series during 2016. The project is coordinated by the European Radiation Dosimetry Group (EURADOS) and is being carried out by members of EURADOS Working Group 7 (Internal Dosimetry). This paper describes the aims and purpose of the Technical Recommendations, and explains how the project is organised.
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Affiliation(s)
- G Etherington
- Public Health England (PHE), Centre for Radiation Chemical and Environmental Hazards, Didcot, UK
| | - P Bérard
- Commissariat à l'Énergie Atomique et aux Énergies Alternatives (CEA), France
| | - E Blanchardon
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), France
| | - B Breustedt
- Karlsruhe Institute of Technology (KIT), Germany
| | - C M Castellani
- Agenzia nazionale per le nuove tecnologie, l'energia e lo sviluppo economico sostenibile (ENEA), Italy
| | | | - A Giussani
- Bundesamt für Strahlenschutz (BfS), Germany
| | - D Franck
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), France
| | - M A Lopez
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Spain
| | - J W Marsh
- Public Health England (PHE), Centre for Radiation Chemical and Environmental Hazards, Didcot, UK
| | - D Nosske
- Bundesamt für Strahlenschutz (BfS), Germany
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Castellani CM, Marsh JW, Hurtgen C, Blanchardon E, Bérard P, Giussani A, Lopez MA. EURADOS-IDEAS GUIDELINES (VERSION 2) FOR THE ESTIMATION OF COMMITTED DOSES FROM INCORPORATION MONITORING DATA. Radiat Prot Dosimetry 2016; 170:17-20. [PMID: 26541189 DOI: 10.1093/rpd/ncv457] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Dose assessment after intakes of radionuclides requires application of biokinetic and dosimetric models and assumptions about factors influencing the final result. In 2006, a document giving guidance for such assessment was published, commonly referred to as the IDEAS Guidelines. Following its publication, a working group within the European networks CONRAD and EURADOS was established to improve and update the IDEAS Guidelines. This work resulted in Version 2 of the IDEAS Guidelines, which was published in 2013 in the form of a EURADOS report. The general structure of the original document was maintained; however, new procedures were included, e.g. the direct dose assessment method for (3)H or special procedure for wound cases applying the NCRP wound model. In addition, information was updated and expanded, e.g. data on dietary excretion of U, Th, Ra and Po for urine and faeces or typical and achievable values for detection limits for different bioassay measurement techniques.
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Affiliation(s)
- C M Castellani
- ENEA, Radiation Protection Institute, Via dei Colli 16, 40136 Bologna, Italy
| | - J W Marsh
- Public Health England, Center for Radiation Chemical and Environmental Hazards, Chilton, Didcot, Oxon OX11 0RQ, UK
| | - C Hurtgen
- SCK CEN, Belgian Nuclear Research Centre, Boeretang 200, 2400 Mol, Belgium
| | - E Blanchardon
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN) PRP-HOM/SDI/LEDI, BP17, F-92262 Fontenay-aux-Roses, France
| | - P Bérard
- CEA/Direction des Sciences du Vivant/Unité Prositon, Route du Panorama BP 6, F-92262 Fontenay-aux-RosesCedex, France
| | - A Giussani
- Federal Office for Radiation Protection, Ingolstädter Landstr. 1, 85764 Oberschleißheim, Germany
| | - M A Lopez
- CIEMAT, Centro de Investigaciones Energéticas Medioambientales y Tecnológicas, Avda. Complutense 40, 28040 Madrid, Spain
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Lopez MA, Mackler RM, Yoder KE. Removal of nuclease contamination during purification of recombinant prototype foamy virus integrase. J Virol Methods 2016; 235:134-138. [PMID: 27269588 DOI: 10.1016/j.jviromet.2016.06.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [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: 04/19/2016] [Revised: 05/31/2016] [Accepted: 06/04/2016] [Indexed: 10/21/2022]
Abstract
Retroviral infection requires integration of the viral genome into the host genome. Recombinant integrase proteins may be purified following bacterial expression. A bulk biochemical assay of integrase function relies on the conversion of supercoiled plasmids to linear or relaxed circles. Single molecule molecular tweezer assays of integrase also evaluate the conversion of supercoiled DNA to nicked and broken species. A bacterial nuclease that co-purifies with retroviral integrase may affect the quantitation of integration activity in bulk or single molecule assays. During purification of retroviral integrase from bacteria, fractions may be screened for contaminating nuclease activity. In order to efficiently separate the nuclease from integrase, the binding affinities of each protein must differ. We find that a co-purifying nuclease may be efficiently separated from integrase based on heparin affinity, but not ionic affinity.
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Affiliation(s)
- Miguel A Lopez
- Molecular Virology, Immunology, and Medical Genetics, The Ohio State University College of Medicine, Columbus, OH 43210, United States
| | - Randi M Mackler
- Molecular Virology, Immunology, and Medical Genetics, The Ohio State University College of Medicine, Columbus, OH 43210, United States
| | - Kristine E Yoder
- Molecular Virology, Immunology, and Medical Genetics, The Ohio State University College of Medicine, Columbus, OH 43210, United States.
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Jones ND, Lopez MA, Hanne J, Peake MB, Lee JB, Fishel R, Yoder KE. Retroviral intasomes search for a target DNA by 1D diffusion which rarely results in integration. Nat Commun 2016; 7:11409. [PMID: 27108531 PMCID: PMC4848512 DOI: 10.1038/ncomms11409] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Accepted: 03/23/2016] [Indexed: 12/13/2022] Open
Abstract
Retroviruses must integrate their linear viral cDNA into the host genome for a productive infection. Integration is catalysed by the retrovirus-encoded integrase (IN), which forms a tetramer or octamer complex with the viral cDNA long terminal repeat (LTR) ends termed an intasome. IN removes two 3'-nucleotides from both LTR ends and catalyses strand transfer of the recessed 3'-hydroxyls into the target DNA separated by 4-6 bp. Host DNA repair restores the resulting 5'-Flap and single-stranded DNA (ssDNA) gap. Here we have used multiple single molecule imaging tools to determine that the prototype foamy virus (PFV) retroviral intasome searches for an integration site by one-dimensional (1D) rotation-coupled diffusion along DNA. Once a target site is identified, the time between PFV strand transfer events is 470 ms. The majority of PFV intasome search events were non-productive. These observations identify new dynamic IN functions and suggest that target site-selection limits retroviral integration.
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Affiliation(s)
- Nathan D Jones
- Department of Molecular Virology, Immunology and Medical Genetics, The Ohio State University Medical Center, Columbus, Ohio 43210, USA.,The Interdisciplinary Biophysics Graduate Program, The Ohio State University, Columbus, Ohio 43210, USA
| | - Miguel A Lopez
- Department of Molecular Virology, Immunology and Medical Genetics, The Ohio State University Medical Center, Columbus, Ohio 43210, USA
| | - Jeungphill Hanne
- Department of Molecular Virology, Immunology and Medical Genetics, The Ohio State University Medical Center, Columbus, Ohio 43210, USA
| | - Mitchell B Peake
- Department of Molecular Virology, Immunology and Medical Genetics, The Ohio State University Medical Center, Columbus, Ohio 43210, USA
| | - Jong-Bong Lee
- Department of Physics, Pohang University of Science and Technology (POSTECH), Pohang 790-784, Korea.,Interdisciplinary Bioscience and Bioengineering, POSTECH, Pohang 790-784, Korea
| | - Richard Fishel
- Department of Molecular Virology, Immunology and Medical Genetics, The Ohio State University Medical Center, Columbus, Ohio 43210, USA.,The Interdisciplinary Biophysics Graduate Program, The Ohio State University, Columbus, Ohio 43210, USA.,Department of Physics, The Ohio State University, Columbus, Ohio 43210, USA
| | - Kristine E Yoder
- Department of Molecular Virology, Immunology and Medical Genetics, The Ohio State University Medical Center, Columbus, Ohio 43210, USA
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Andreasi Bassi M, Lopez MA, Confalone L, Gaudio RM, Lombardo L, Lauritano D. A prospective evaluation of outcomes of two tapered implant systems. J BIOL REG HOMEOS AG 2016; 30:1-6. [PMID: 27469541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The purpose of this prospective clinical study was to evaluate survival rate (SVR - i.e. fixtures still in place at the end of the observation period) and success rate (SCR - i.e. bone resorption around the implant neck) of two tapered implant systems. Both systems were equipped with a tapered connection, one requiring bone-level (BL) placement, while the other required soft-tissue-level (STL) placement. In the period between January 1996 and October 2011, 133 fixtures were inserted, 90 in females and 43 in males, with a mean age of 60±11 years. The mean post-surgical follow-up was 64±38 months. Several clinical parameters were evaluated as potential outcome conditioners. An SPSS program was used for statistical analysis and a Cox analysis was performed. The SVR was 100% since no fixtures were lost. SCR, expressed through the mean marginal bone loss, was 88%. No significant differences were found, for most of the variables investigated with the exception of bone grafting and implant type: STL implants showed a better clinical outcome than BL implants when bone grafting was performed simultaneously with implant placement. Tapered implants are reliable devices for oral rehabilitation of jaws.
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Affiliation(s)
| | | | | | - R M Gaudio
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - L Lombardo
- Department of Biomedical Sciences and Specialist Surgeries, University of Ferrara, Ferrara, Italy
| | - D Lauritano
- Department of Medicine and Surgery, University of Milan-Bicocca, Milan, Italy
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Lopez MA, Andreasi Bassi M, Confalone L, Gaudio RM, Lombardo L, Lauritano D. Retrospective study on bone-level and soft-tissue-level cylindrical implants. J BIOL REG HOMEOS AG 2016; 30:43-48. [PMID: 27469547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The purpose of this prospective clinical study was to evaluate the survival rate (SVR - i.e. fixtures still in place at the end of the observation period) and success rate (SCR - i.e. bone resorption around implant neck) of two cylindrical implant systems. Both systems were equipped with a tapered connection, one requiring a bone-level (BL) placement, while the other a soft-tissue-level (STL) placement. In the period between January 1996 and October 2011, a total of 150 implants (76 in females and 74 in males, mean age 60±11 years) were inserted. The mean post-surgical follow-up was 84±47 months. Several parameters were evaluated as potential outcome conditioners: age, gender, diabetes, smoking, periodontitis, type of edentulism, replaced tooth, jaw location (i.e. maxilla or mandible), bone graft, immediate loading, post-extractive, type of prosthesis, implant diameter and length. An SPSS program was used for statistical analysis. Only two fixtures were lost, therefore SVR was 98.7%. SCR, expressed through the mean marginal bone loss, was 92%. The mean peri-implant bone loss was 0.121.47 mm for BL implants and 0.041.3 mm for STL implants. None of the studied variables had a statistical significant impact on SVR or SCR. Cylindrical implants are reliable for oral rehabilitation.
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Affiliation(s)
| | | | | | - R M Gaudio
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - L Lombardo
- Department of Biomedical Sciences and Specialist Surgeries, University of Ferrara, Ferrara, Italy
| | - D Lauritano
- Department of Medicine and Surgery, University of Milan-Bicocca, Milan, Italy
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Andreasi Bassi M, Andrisani C, Lopez MA, Gaudio RM, Lombardo L, Lauritano D. Guided bone regeneration in distal mandibular atrophy by means of a preformed titanium foil: a case series. J BIOL REG HOMEOS AG 2016; 30:61-68. [PMID: 27469550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The aim of this case series was to evaluate the clinical outcome of preformed titanium foil (PTF) to perform guided bone regeneration (GBR) in posterior mandibular atrophies. Thirteen patients (4 male; 9 female; mean age 58.85±10.16 years), with class II division C atrophy, according to Misch, were selected to perform GBR by means of PTF, using a moldable allograft paste as graft material. The devices, made of a 0.2mm thick pure titanium foil, were pre-shaped using stereolithographic models obtained from CT-scan of the patients recipient sites. In the second stage, performed at 6.35±2.15 months, 23 cylindrical two-piece implants were placed and the devices removed. At four months, the implants were exposed and submitted to progressive prosthetic load for a span of 4 months. The cases were finalized by means of metal-ceramic cementable restorations. The post finalization follow-up was at 12 months. Survival rate (i.e. SVR) was 100% since no fixtures were lost. At the one-year follow up, the clinical appearance of the soft tissues was optimal and no pathological signs on probing were recorded. The success rate (i.e. SCR) was 82.6% and the average peri-implant bone reabsorption was 0.99±0.59 mm. The results suggest good potentialities of this method for bone volume augmentation in distal mandibular atrophies, allowing to maximize the outcome and simplifying the surgical phase.
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Affiliation(s)
- M Andreasi Bassi
- Experimental Laboratory of Immunological and Rheumatologic Researches, Istituto Auxologico; private practice in Rome, Italy
| | | | - M A Lopez
- Experimental Laboratory of Immunological and Rheumatologic Researches, Istituto Auxologico; private practice in Rome, Italy
| | - R M Gaudio
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - L Lombardo
- Department of Biomedical Sciences and Specialist Surgeries, University of Ferrara, Ferrara, Italy
| | - D Lauritano
- Department of Medicine and Surgery, University of Milan-Bicocca, Milan, Italy
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Andreasi Bassi M, Lopez MA, Confalone L, Gaudio RM, Lombardo L, Lauritano D. Clinical outcome of a two-piece implant system with an internal hexagonal connection: a prospective study. J BIOL REG HOMEOS AG 2016; 30:7-12. [PMID: 27469542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The purpose of this prospective clinical study was to evaluate the survival rate (SVR - i.e. fixtures still in place at the end of the observation period) and success rate (SCR - i.e. bone resorption around implant neck) of an implant system characterized by cylindrical and tapered implants, both provided with an internal hexagonal connection. In the period between January 1996 and October 2011, 52 implants with internal hexagonal connection were inserted in 21 females and 31 males, mean age 54±11 years. The mean post-surgical follow-up was 44.6±34.4 months. Several parameters were evaluated as potential outcome conditioners: age, gender, smoking, replaced tooth, periodontal disease, fixture shape (i.e. cylindrical or tapered), jaw location (i.e. maxilla or mandible), bone graft, immediate loading, post-extractive placement, type of prosthesis (i.e. single crown or bridge), edentulism, implant diameter and length. An SPSS statistical program was used and Cox regression analysis performed. SVR was 100% since no fixtures were lost. SCR, expressed through the mean marginal bone loss, was 77%. No significant differences were found, for most of the parameters analyzed, with the exception of prosthetic bridges, where implants supporting this type of rehabilitation showed a worse clinical outcome in comparison to single crown rehabilitations. Internal hexagonal connection is a reliable tool for oral rehabilitation.
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Affiliation(s)
| | | | | | - R M Gaudio
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - L Lombardo
- Department of Biomedical Sciences and Specialist Surgeries, University of Ferrara, Ferrara, Italy
| | - D Lauritano
- Department of Medicine and Surgery, University of Milan-Bicocca, Milan, Italy
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Andreasi Bassi M, Andrisani C, Lopez MA, Gaudio RM, Lombardo L, Lauritano D. Modified connective tissue punch technique to increase the vestibular/buccal keratinized tissue on flapless implant surgery: a case series. J BIOL REG HOMEOS AG 2016; 30:29-34. [PMID: 27469545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The aim of this article is to show a simple and predictable technique to enhance both the vestibular/buccal (V/B) gingival thickness (GT) and keratinized tissue width (KTW) improving the soft-tissue profile after flapless implant placement. The technique proposed was named Modified Connective Tissue Punch (MCTP). Fourteen patients (6 men and 8 women) aged between 35 and 69 years (mean value 48.07±13.023 years) were enrolled in this case series. Seventeen implant sites were submitted to flapless procedure. The connective punch (CP) was harvested with a motor-driven circular tissue punch and then a full-split dissection was executed, in order to create a deep pouch, beyond the mucogingival junction, on the V/B side. In this recipient site the CP was placed. The normal flapless surgical protocol was used; implants were inserted and covered with transgingival healing cap screws. GT and KTW were measured: both immediately before and after surgery; at the time of the prosthetic finalization (3-4months, respectively, for mandible and maxilla); 1 year post surgery follow-up. GT was measured at 1 mm, 2 mm and 5 mm on the V/B side, from the outline of the punch. Both KTW and GT at 1 and 2 mm can be effectively increased, while no significant effects for GT at 5 mm can be expected from this technique. Furthermore, the mean values of KTW and GT at 1 mm and 2 mm show significant increases at 3-4 months post-operative, while no further significant increments are shown at 1 year post-operative follow-up. The Authors recommend the use of the MCTP technique to reduce the number of aesthetic complications and soft tissue defects in flapless implant surgery. Longer follow-ups are needed to evaluate the stability of peri-implant tissues over time.
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Affiliation(s)
| | | | | | - R M Gaudio
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - L Lombardo
- Department of Biomedical Sciences and Specialist Surgeries, University of Ferrara, Ferrara, Italy
| | - D Lauritano
- Department of Medicine and Surgery, University of Milan-Bicocca, Milan, Italy
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Lopez MA, Andreasi Bassi M, Confalone L, Gaudio RM, Lombardo L, Lauritano D. Clinical outcome of 215 transmucosal implants with a conical connection: a retrospective study after 5-year follow-up. J BIOL REG HOMEOS AG 2016; 30:55-60. [PMID: 27469549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The purpose of this retrospective clinical study was to evaluate the survival rate (i.e. SVR fixtures still in place at the end of the observation period) and success rate (i.e. SCR - bone resorption around implant neck) of an implant system characterized by cylindrical and tapered implants, both types of implant being equipped with a conical connection with an internal octagon (COC), both implant types having a 1.8 mm smooth neck, positioned above the bone crest level. A total of 65 subjects received 215 COCs between January 1996 and October 2011. All COCs were placed and restored by three experienced dental surgeons. The mean follow-up was 84±44 months. The patients involved in the study were both male (30) and female (35), of whom 30 were smokers (less than 20 cigarettes/day) and none was diabetic. The implants differed in terms of diameter and length, and were inserted both in the mandible (97) and in the maxilla (118). Sixty-seven implants were single tooth rehabilitations, and 148 prosthetic bridges. Fourteen had guided bone regeneration (GBR), and 10 were placed in post-extractive sites. Forty of the implants were provided with passing-screw abutments and 175 with full-screw abutments. The data were analyzed using descriptive statistics. None of the implants failed before prosthetic restoration, resulting in an SVR=100% after loading. The radiographic and clinical data revealed well-maintained, hard and soft tissue around the COCs, with an SCR=92.6%. Cox regression analyses did not detect any variables with statistical impact on the clinical outcome. In conclusion, Shiner XT implants are reliable tools for oral rehabilitation.
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Affiliation(s)
| | | | | | - R M Gaudio
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - L Lombardo
- Department of Biomedical Sciences and Specialist Surgeries, University of Ferrara, Ferrara, Italy
| | - D Lauritano
- Department of Medicine and Surgery, University of Milan-Bicocca, Milan, Italy
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Andreasi Bassi M, Andrisani C, Lopez MA, Gaudio RM, Lombardo L, Lauritano D. Maxillary sinus by-pass with tilted implants via tapered-screw bone expanders in low density bone: one year follow -up of a case series. J BIOL REG HOMEOS AG 2016; 30:13-20. [PMID: 27469543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In the present paper the use of tapered-screw bone expanders (TSBEs) is proposed, in combination with the placement of tilted implants in close proximity to the anterior sinus wall, solving the problem of the reduced height of the alveolar bone in the sub-antral area. The Authors named the procedure: Tilted Implant Expansion Osteotomy (TIEO). Fifteen patients (10 females and 5 males, mean age 47.8±8.15 years) with distal edentulous maxillae were enrolled in this study. For each edentulous site 2 implants were placed, the anterior implant in the area of the most anterior missing tooth while, the posterior implant, immediately in front of the maxillary sinus, with an inclined position. Adopting the aforesaid procedure, 34 cylindrical two-piece implants were placed, 17 of which were placed in tilted position, in order to by-pass the maxillary sinus. After a healing period of 4-6 months, the second stage surgery was performed. The cases were finalized by metal-ceramic cementable restorations with a variable number of elements, from 2 to 4, without any cantilever element. The post finalization follow-up was at 12 months. Survival rate was 100% since no fixtures were lost. At the one-year follow-up the clinical and radiological appearance of the soft and hard tissues was optimal and no pathological signs were recorded. TIEO is a promising surgical procedure for oral rehabilitation of maxillary edentulous sites and represents a therapeutic alternative to sinus lift techniques.
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Affiliation(s)
| | | | | | - R M Gaudio
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - L Lombardo
- Department of Biomedical Sciences and Specialist Surgeries, University of Ferrara, Ferrara, Italy
| | - D Lauritano
- Department of Medicine and Surgery, University of Milan-Bicocca, Milan, Italy
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Andreasi Bassi M, Andrisani C, Lopez MA, Gaudio RM, Lombardo L, Carinci F. Guided bone regeneration by means of a preformed titanium foil: A case of severe atrophy of edentulous posterior mandible. J BIOL REG HOMEOS AG 2016; 30:35-41. [PMID: 27469546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The aim of this case report was to evaluate the potential of preformed titanium foil (PTF) as membrane, used together with a mouldable allograft paste, for guided bone regeneration in a case of severe mandibular posterior atrophy involving the alveolar nerve. In order to create a rigid barrier to the competitive growth of soft tissues and a stable volume for the colonization of the osteoprogenitor cells, a foil of pure titanium was pre-shaped by means of a stereolithographic model, obtained from a CT-scan of the patient. This procedure showed promising results, allowing to maximize the outcome and simplifying the surgical phase.
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Affiliation(s)
| | | | | | - R M Gaudio
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - L Lombardo
- Department of Biomedical Sciences and Specialist Surgeries, University of Ferrara, Ferrara, Italy
| | - F Carinci
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
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Lopez MA, Manzulli N, Casale M, Ormianer Z, Carinci F. The use of resorbable heterologous cortical lamina as a new sinus lift floor: a technical note. J BIOL REG HOMEOS AG 2016; 30:75-79. [PMID: 27469552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Some graft materials such as a heterologous porcine cortical lamina have an excellent capacity in creating recipient sites that can be filled with cortico-spongious collagenated bone paste that reabsorbs, allowing for the reformation of good-quality bone. In this work a technique is proposed which makes use of resorbable cortical lamina in order to create a new sinus floor that can be filled with cortico-spongious bone paste. The adequate vascularisation of the graft combined with the integration of the lamina, which does not need to be removed, makes it possible to propose this technique as a potential alternative to those used so far.
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Affiliation(s)
| | - N Manzulli
- Private practice in Cerignola, Foggia, Italy
| | - M Casale
- Policlinico Universitario Campus Biomedico, Rome, Italy
| | - Z Ormianer
- Department of Oral Rehabilitation, Tel-Aviv University, Tel-Aviv, Israel
| | - F Carinci
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
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