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Using a new, low-cost air quality sensor to quantify second-hand smoke (SHS) levels in homes 2015 Respiratory Group, Division of Applied Health Sciences, Scottish Centre for Indoor Air, University of Aberdeen, Aberdeen, UK Center for Human Exposure Science, Institute of Occupational Medicine, Edinburgh, UK.; Respiratory Group, Division of Applied Heal
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Tobacco control
Periodical, Abbrev.
Tob.Control
Pub Date Free Form
Mar
Volume
24
Issue
2
Start Page
153
Other Pages
158
Notes
CI: Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.; JID: 9209612; 0 (Air Pollutants); 0 (Particulate Matter); 0 (Tobacc
Place of Publication
England
ISSN/ISBN
1468-3318; 0964-4563
Accession Number
PMID: 24046213
Language
eng
SubFile
Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.1136/tobaccocontrol-2013-051188 [doi]
Output Language
Unknown(0)
PMID
24046213
Abstract
OBJECTIVE: To determine if a low-cost particle counter, the Dylos DC 1700, can be used in homes to quantify second-hand smoke (SHS) concentrations. METHODS: Participants were recruited from a hospital-based study of attitudes on smoking. Two photometric devices (Dylos DC1700 and Sidepak AM510 Personal Aerosol Monitor) capable of measuring and logging concentrations of particulate matter were placed in smoking and non-smoking homes for approximately 24h. Acquired data were randomly allocated to one of two groups: one was used to generate a calibration equation using regression techniques; the second was used for validation of the generated model. The mean difference and limits of agreement between the two instruments were calculated using the validation dataset. Summary air-quality results were also compared across the entire dataset. RESULTS: Over 500 001 minute concentration measurements were collected from 34 homes. 25 301 randomly selected paired-measurements were used to generate a calibration equation (R(2) 0.86) converting the particle number concentration from the Dylos to a mass concentration of PM2.5 as measured by the Sidepak. The mean difference (limits of agreement) between the remaining 25 102 paired measurements was -0.09 (-49.7 to 49.5) with 3.2% of values outside the limits of agreement. Differences in the air quality information generated by the two instruments were generally small and unlikely to impact on user interpretation. CONCLUSIONS: The Dylos appears to be a valid instrument for measuring PM2.5 in household settings. The Dylos may be useful in air quality-based interventions designed to change smokers' behaviours with the possibility of encouraging cessation and/or smoke-free homes.
Descriptors
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Book Title
Database
Publisher
Data Source
Authors
Semple,S., Ibrahim,A.E., Apsley,A., Steiner,M., Turner,S.
Original/Translated Title
URL
Date of Electronic
20130917
PMCID
Editors
Assessment of indoor air concentrations of VOCs and their associated health risks in the library of Jawaharlal Nehru University, New Delhi 2014 School of Environmental Sciences, Jawaharlal Nehru University, New Delhi, India, amit.sagarjnu2@gmail.com.
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Environmental science and pollution research international
Periodical, Abbrev.
Environ.Sci.Pollut.Res.Int.
Pub Date Free Form
Feb
Volume
21
Issue
3
Start Page
2240
Other Pages
2248
Notes
JID: 9441769; 0 (Air Pollutants); 0 (Volatile Organic Compounds); 2013/06/07 [received]; 2013/09/09 [accepted]; 2013/09/18 [aheadofprint]; ppublish
Place of Publication
Germany
ISSN/ISBN
1614-7499; 0944-1344
Accession Number
PMID: 24046229
Language
eng
SubFile
Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.1007/s11356-013-2150-7 [doi]
Output Language
Unknown(0)
PMID
24046229
Abstract
The present work investigated the levels of total volatile organic compounds (TVOC) and benzene, toluene, ethylbenzene, m/p-xylene, and o-xylene (BTEX) in different microenvironments in the library of Jawaharlal Nehru University in summer and winter during 2011-2012. Carcinogenic and non-carcinogenic health risks due to organic compounds were also evaluated using US Environmental Protection Agency (USEPA) conventional approaches. Real-time monitoring was done for TVOC using a data-logging photo-ionization detector. For BTEX measurements, the National Institute for Occupational Safety and Health (NIOSH) standard method which consists of active sampling of air through activated charcoal, followed by analysis with gas chromatography, was performed. Simultaneously, outdoor measurements for TVOC and BTEX were carried out. Indoor concentrations of TVOC and BTEX (except benzene) were higher as compared to the outdoor for both seasons. Toluene and m/p-xylene were the most abundant organic contaminant observed in this study. Indoor to outdoor (I/O) ratios of BTEX compounds were generally greater than unity and ranged from 0.2 to 8.7 and 0.2 to 4.3 in winter and summer, respectively. Statistical analysis and I/O ratios showed that the dominant pollution sources mainly came from indoors. The observed mean concentrations of TVOC lie within the second group of the Molhave criteria of indoor air quality, indicating a multifactorial exposure range. The estimated lifetime cancer risk (LCR) due to benzene in this study exceeded the value of 1 x 10(-6) recommended by USEPA, and the hazard quotient (HQ) of non-cancer risk came under an acceptable range.
Descriptors
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Book Title
Database
Publisher
Data Source
Authors
Kumar,A., Singh,B.P., Punia,M., Singh,D., Kumar,K., Jain,V.K.
Original/Translated Title
URL
Date of Electronic
20130918
PMCID
Editors
Magnetic solid-phase extraction based on magnetic multi-walled carbon nanotubes for the determination of polycyclic aromatic hydrocarbons in grilled meat samples 2013 Environmental Health Department, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Talanta
Periodical, Abbrev.
Talanta
Pub Date Free Form
15-Oct
Volume
115
Issue
Start Page
957
Other Pages
965
Notes
CI: Copyright (c) 2013; JID: 2984816R; 0 (Magnetite Nanoparticles); 0 (Nanotubes, Carbon); 0 (Polycyclic Hydrocarbons, Aromatic); 0 (Water Pollutants, Chemical); OTO: NOTNLM; 2013/05/04 [received]; 2013/07/02 [revised]; 2013/07/04 [accepted]; 2013/07/09 [
Place of Publication
Netherlands
ISSN/ISBN
1873-3573; 0039-9140
Accession Number
PMID: 24054688
Language
eng
SubFile
Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.1016/j.talanta.2013.07.005 [doi]
Output Language
Unknown(0)
PMID
24054688
Abstract
A sensitive and reliable method for determination of polycyclic aromatic hydrocarbons (PAHs) in grilled meat samples was developed and validated. The method is based on magnetic solid phase extraction (MSPE) and GC-MS analysis. Magnetic carbon nanotubes (MCNTs) which have excellent adsorption capabilities, were used as adsorbent to extract PAHs, an important class of carcinogens, from meat samples. To obtain the best extraction yields, the influencing factors, including primary extraction conditions, the amount of adsorbent, adsorption and desorption time, salt addition and desorption solvent were investigated in detail. Under optimized conditions, the LODs and LOQs achieved were in the range of 0.035-0.100 and 0.075-0.200 microg Kg(-1) respectively. The calibration curves were linear (r(2) >/= 0.988) over the concentration ranges from 0.100 microg Kg(-1) to 250 microg Kg(-1) The relative standard deviations (RSDs) obtained by carrying out intra- and inter-day precision studies were less than 13.7% and 13.9%, respectively which confirms reproducibility of the method. In addition, the recoveries of analyzed PAHs ranged from 81.3% to 96.7% with the RSDs less than 12.7 %. Finally, the established MSPE-GC-MS method was successfully applied to determine PAHs in charcoal grilled/barbecued meat samples. benzo[a]anthracene, benzo[b]fluoranthene, Benzo[a]pyrene and chrysene were detected in beef, lamb and chicken meat samples with the mean cumulative concentration of 4.000, 3.414 and 0.931 microg Kg(-1) respectively. Taken together, the MSPE-GC-MS method developed in current study provides a new option for the determination of PAHs in grilled/barbecued meat samples.
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Links
Book Title
Database
Publisher
Elsevier B.V
Data Source
Authors
Moazzen,M., Ahmadkhaniha,R., Gorji,M.E., Yunesian,M., Rastkari,N.
Original/Translated Title
URL
Date of Electronic
20130709
PMCID
Editors
Exhaled carbon monoxide and its associations with smoking, indoor household air pollution and chronic respiratory diseases among 512,000 Chinese adults 2013 Clinical Trial Service Unit and Epidemiological Studies Unit (CTSU), University of Oxford, Oxford, UK, School of Public Health, Peking University Health Science Center, Beijing, China, Chinese Academy of Medical Sciences, Dong Cheng District, Beijing, Chi
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
International journal of epidemiology
Periodical, Abbrev.
Int.J.Epidemiol.
Pub Date Free Form
Oct
Volume
42
Issue
5
Start Page
1464
Other Pages
1475
Notes
GR: 088158/Z/09/Z/Wellcome Trust/United Kingdom; GR: MC_U137686851/Medical Research Council/United Kingdom; GR: British Heart Foundation/United Kingdom; GR: Cancer Research UK/United Kingdom; GR: Medical Research Council/United Kingdom; JID: 7802871; 0 (C
Place of Publication
England
ISSN/ISBN
1464-3685; 0300-5771
Accession Number
PMID: 24057999
Language
eng
SubFile
Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.1093/ije/dyt158 [doi]
Output Language
Unknown(0)
PMID
24057999
Abstract
BACKGROUND: Exhaled carbon monoxide (COex) level is positively associated with tobacco smoking and exposure to smoke from biomass/coal burning. Relatively little is known about its determinants in China despite the population having a high prevalence of smoking and use of biomass/coal. METHODS: The China Kadoorie Biobank includes 512,000 participants aged 30-79 years recruited from 10 diverse regions. We used linear regression and logistic regression methods to assess the associations of COex level with smoking, exposures to indoor household air pollution and prevalent chronic respiratory conditions among never smokers, both overall and by seasons, regions and smoking status. RESULTS: The overall COex level (ppm) was much higher in current smokers than in never smokers (men: 11.5 vs 3.7; women: 9.3 vs 3.2). Among current smokers, it was higher among those who smoked more and inhaled more deeply. Among never smokers, mean COex was positively associated with levels of exposures to passive smoking and to biomass/coal burning, especially in rural areas and during winter. The odds ratios (OR) and 95% confidence interval (CI) of air flow obstruction (FEV1/FVC ratio/=14 ppm, compared with those having COex
Descriptors
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Book Title
Database
Publisher
Data Source
Authors
Zhang,Q., Li,L., Smith,M., Guo,Y., Whitlock,G., Bian,Z., Kurmi,O., Collins,R., Chen,J., Lv,S., Pang,Z., Chen,C., Chen,N., Xiong,Y., Peto,R., Chen,Z., China Kadoorie Biobank study collaboration
Original/Translated Title
URL
Date of Electronic
20130920
PMCID
PMC3807615
Editors
Predictors and patterns of cigarette and smokeless tobacco use among adolescents in 32 countries, 2007-2011 2014 Department of Social and Behavioral Sciences, Center for Global Tobacco Control, Harvard School of Public Health, Boston, Massachusetts. Electronic address: iagaku@post.harvard.edu.; Department of Social and Behavioral Sciences, Center for Global Tobacco
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
The Journal of adolescent health : official publication of the Society for Adolescent Medicine
Periodical, Abbrev.
J.Adolesc.Health
Pub Date Free Form
Jan
Volume
54
Issue
1
Start Page
47
Other Pages
53
Notes
LR: 20150422; CI: Copyright (c) 2014; GR: 2R01 CA087477-09A2/CA/NCI NIH HHS/United States; GR: 3R01 CA125224-03/CA/NCI NIH HHS/United States; GR: R01 CA087477/CA/NCI NIH HHS/United States; GR: R01 CA125224/CA/NCI NIH HHS/United States; JID: 9102136; NIHMS
Place of Publication
United States
ISSN/ISBN
1879-1972; 1054-139X
Accession Number
PMID: 24060573
Language
eng
SubFile
Journal Article; Research Support, N.I.H., Extramural; IM
DOI
10.1016/j.jadohealth.2013.07.037 [doi]
Output Language
Unknown(0)
PMID
24060573
Abstract
PURPOSE: This study compared data from 32 countries to assess predictors and patterns of cigarette and smokeless tobacco (SLT) use among students aged 13-15 years old. METHODS: Data from the 2007-2008 Global Youth Tobacco Surveys were analyzed for students aged 13-15 years in 31 countries located in all six World Health Organization regions. In addition, the 2011 National Youth Tobacco Survey was analyzed for U.S. students aged 13-15 years. Country-specific prevalence of current smoking, current SLT use, and concurrent use patterns were assessed. RESULTS: The national prevalence of current cigarette smoking among students aged 13-15 years ranged from 1.8% (Rwanda) to 32.9% (Latvia), whereas current SLT use ranged from 1.1% (Montenegro) to 14.4% (Lesotho). In the U.S. and most European countries surveyed, current smoking prevalence was significantly higher than SLT prevalence, in contrast to patterns observed in low- and middle-income countries. Also, in most of the surveyed countries outside of Europe and the United States, SLT use among girls was as common as their use of cigarettes, and not significantly different from use by boys. When compared with U.S. adolescents, the odds of SLT use were highest among African adolescents (adjusted odds ratio = 3.98; 95% CI: 2.19-7.24) followed by those in the Southeast Asian region (adjusted odds ratio = 2.76; 95% CI: 1.38-5.53). CONCLUSIONS: Region-specific patterns of tobacco use were noticed. Furthermore, it is alarming that in several low- and middle-income countries, the prevalence of SLT use among females did not differ from that among males, suggesting the possibility of a future shared burden of disease between both males and females.
Descriptors
Links
Book Title
Database
Publisher
Society for Adolescent Health and Medicine. Published by Elsevier Inc
Data Source
Authors
Agaku,I.T., Ayo-Yusuf,O.A., Vardavas,C.I., Connolly,G.
Original/Translated Title
URL
Date of Electronic
20130920
PMCID
PMC3872244
Editors
Chinese carless young drivers' self-reported driving behavior and simulated driving performance 2013 a Department of Industrial Engineering and Logistics Management , Shanghai Jiao Tong University , Shanghai , China.
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Traffic injury prevention
Periodical, Abbrev.
Traffic Inj.Prev.
Pub Date Free Form
Volume
14
Issue
8
Start Page
853
Other Pages
860
Notes
JID: 101144385; ppublish
Place of Publication
England
ISSN/ISBN
1538-957X; 1538-9588
Accession Number
PMID: 24073774
Language
eng
SubFile
Comparative Study; Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.1080/15389588.2013.771396 [doi]
Output Language
Unknown(0)
PMID
24073774
Abstract
OBJECTIVE: Carless young drivers refers to those drivers aged between 18 and 25 years who have a driver's license but seldom have opportunities to practice their driving skills because they do not have their own cars. Due to China's lower private car ownership, many young drivers become carless young drivers after licensure, and the safety issue associated with them has raised great concern in China. This study aims to provide initial insight into the self-reported driving behaviors and simulated driving performance of Chinese carless young drivers. METHODS: Thirty-three carless young drivers and 32 young drivers with their own cars (as a comparison group) participated in this study. A modified Driver Behavior Questionnaire (DBQ) with a 4-factor structure (errors, violations, attention lapses, and memory lapses) was used to study carless young drivers' self-reported driving behaviors. A simulated driving experiment using a low-cost, fixed-base driving simulator was conducted to measure their simulated driving performance (errors, violations, attention lapses, driving maintenance, reaction time, and accidents). RESULTS: Self-reported DBQ outcomes showed that carless young drivers reported similar errors, more attention lapses, fewer memory lapses, and significantly fewer violation behaviors relative to young drivers with their own cars, whereas simulated driving results revealed that they committed significantly more errors, attention lapses, and violation behaviors than the comparison group. Carless young drivers had a lower ability to maintain the stability of speed and lane position, drove more cautiously approaching and passing through red traffic lights, and committed more accidents during simulated driving. A tendency to speed was not found among carless young drivers; their average speed and speeding frequency were all much lower than that of the comparison group. Lifetime mileage was the only significant predictor of carless young drivers' self-reported violations, simulated violations, speed, and reaction time, whereas no significant predictor was found for young drivers with their own cars. CONCLUSIONS: Carless young drivers had poorer driving performance and were more overconfident of their self-reported driving skills compared to those young drivers with greater access to vehicles. Given that the lifetime mileage positively predicted the simulated violations measure of carless young drivers, immediate interventions are needed to help them increase driving exposure and gain driving experience gradually before moving to more challenging on-road driving tasks. Supplemental materials are available for this article.
Descriptors
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Book Title
Database
Publisher
Data Source
Authors
Zhang,Q., Jiang,Z., Zheng,D., Man,D., Xu,X.
Original/Translated Title
URL
Date of Electronic
PMCID
Editors
Gastroesophageal reflux disease, proton-pump inhibitor use and Barrett's esophagus in esophageal adenocarcinoma: Trends revisited 2013 Division of Thoracic and Foregut Surgery, Department of Surgery, University of Rochester Medical Center, Rochester, NY.
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Surgery
Periodical, Abbrev.
Surgery
Pub Date Free Form
Oct
Volume
154
Issue
4
Start Page
856
Other Pages
64; discussion 864-6
Notes
CI: Copyright (c) 2013; JID: 0417347; 0 (Proton Pump Inhibitors); 2013/03/07 [received]; 2013/07/19 [accepted]; ppublish
Place of Publication
United States
ISSN/ISBN
1532-7361; 0039-6060
Accession Number
PMID: 24074425
Language
eng
SubFile
Journal Article; AIM; IM
DOI
10.1016/j.surg.2013.07.020 [doi]
Output Language
Unknown(0)
PMID
24074425
Abstract
PURPOSE: Screening for esophageal adenocarcinoma (EAC) has not become policy in part over concerns in identifying the high-risk group. It is often claimed that a significant proportion of patients developing EAC do not report preexisting reflux symptoms or prior treatment for gastroesophageal reflux disease (GERD). As such, our aim was to assess the prevalence of GERD symptoms, proton pump inhibitor (PPI) use and Barrett's esophagus (BE) and their impact on survival in patients undergoing esophagectomy for EAC. METHODS: The study population consisted of 345 consecutive patients who underwent esophagectomy for EAC between 2000 and 2011 at a university-based medical center. Patients with a diagnosis of esophageal squamous cell carcinoma and those who underwent esophagectomy for benign disease were excluded. The prevalence of preoperative GERD symptoms, defined as presence of heartburn, regurgitation or epigastric pain, PPI use (>6 months) and BE, defined by the phrases "Barrett's esophagus," "intestinal epithelium," "specialized epithelium," or "goblet cell metaplasia" in the patients' preoperative clinical notes were retrospectively collected. Overall long-term and stage-specific survival was compared in patients with and without the presence of preoperative GERD symptoms, PPI use, or BE. RESULTS: The majority of patients (64%; 221/345) had preoperative GERD symptoms and a history of PPI use (52%; 179/345). A preoperative diagnosis of BE was present in 34% (118/345) of patients. Kaplan-Meier survival analysis revealed a marked survival advantage in patients undergoing esophagectomy who had preoperative GERD symptoms, PPI use or BE diagnosis (P = .001). The survival advantage remained when stratified for American Joint Committee on Cancer stage in patients with preoperative PPI use (P = .015) but was less pronounced in patients with GERD symptoms or BE (P = .136 and P = .225, respectively). CONCLUSION: These data show that the oft-quoted statistic that the majority of patients with EAC do not report preexisting GERD or PPI use is false. Furthermore, a diagnosis of BE is present in a surprisingly high proportion of patients (34%). There is a distinct survival advantage in patients with preoperative GERD symptoms, PPI use, and BE diagnosis, which may not be simply owing to earlier stage at diagnosis. Screening may affect survival outcomes in more patients with EAC than previously anticipated.
Descriptors
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Book Title
Database
Publisher
Mosby, Inc
Data Source
Authors
Lada,M.J., Nieman,D.R., Han,M., Timratana,P., Alsalahi,O., Peyre,C.G., Jones,C.E., Watson,T.J., Peters,J.H.
Original/Translated Title
URL
Date of Electronic
PMCID
Editors
Patterns of current use of tobacco products among U.S. high school students for 2000-2012--findings from the National Youth Tobacco Survey 2014 Office on Smoking and Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia. Electronic address: RArrazola@cdc.gov.; Office on Smoking and Health, National Center for Chro
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
The Journal of adolescent health : official publication of the Society for Adolescent Medicine
Periodical, Abbrev.
J.Adolesc.Health
Pub Date Free Form
Jan
Volume
54
Issue
1
Start Page
54
Other Pages
60000000000
Notes
LR: 20160229; CI: Published by Elsevier Inc.; GR: CC999999/Intramural CDC HHS/United States; JID: 9102136; HHSPA713823; OID: NLM: HHSPA713823; OID: NLM: PMC4534716; OTO: NOTNLM; 2013/05/31 [received]; 2013/08/02 [revised]; 2013/08/02 [accepted]; 2013/09/2
Place of Publication
United States
ISSN/ISBN
1879-1972; 1054-139X
Accession Number
PMID: 24074604
Language
eng
SubFile
Journal Article; IM
DOI
10.1016/j.jadohealth.2013.08.003 [doi]
Output Language
Unknown(0)
PMID
24074604
Abstract
PURPOSE: The purpose of this study was to assess patterns and trends of tobacco use among high school students to better understand which products are used individually or concurrently. METHODS: Data from the National Youth Tobacco Survey from 2000 through 2012 were used to assess patterns and trends of current tobacco use (cigarettes, cigars, smokeless tobacco, and other tobacco products) among U.S. high school students. We assessed use of products individually and concurrently. RESULTS: During 2000-2012, overall linear declines were observed in current use of any tobacco product from 33.6% to 20.4% (p
Descriptors
Links
Book Title
Database
Publisher
Data Source
Authors
Arrazola,R.A., Kuiper,N.M., Dube,S.R.
Original/Translated Title
URL
Date of Electronic
20130926
PMCID
PMC4534716
Editors
Alginate/cashew gum nanoparticles for essential oil encapsulation 2014 Department of Analytical and Physical Chemistry, Federal University of Ceara, UFC, Fortaleza-CE, Brazil.; Department of Analytical and Physical Chemistry, Federal University of Ceara, UFC, Fortaleza-CE, Brazil. Electronic address: hpaula@ufc.br.; Departme
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Colloids and surfaces.B, Biointerfaces
Periodical, Abbrev.
Colloids Surf.B Biointerfaces
Pub Date Free Form
1-Jan
Volume
113
Issue
Start Page
146
Other Pages
151
Notes
LR: 20151119; CI: Copyright (c) 2013; JID: 9315133; 0 (Alginates); 0 (Hexuronic Acids); 0 (Oils, Volatile); 0 (Polymers); 8A5D83Q4RW (Glucuronic Acid); 8C3Z4148WZ (alginic acid); OTO: NOTNLM; 2012/10/26 [received]; 2013/08/19 [revised]; 2013/08/22 [accept
Place of Publication
Netherlands
ISSN/ISBN
1873-4367; 0927-7765
Accession Number
PMID: 24077112
Language
eng
SubFile
Journal Article; IM
DOI
10.1016/j.colsurfb.2013.08.038 [doi]
Output Language
Unknown(0)
PMID
24077112
Abstract
Alginate/cashew gum nanoparticles were prepared via spray-drying, aiming at the development of a biopolymer blend for encapsulation of an essential oil. Nanoparticles were characterized regarding to their hydrodynamic volume, surface charge, Lippia sidoides essential oil content and release profile, in addition to being analyzed by infrared spectroscopy (FT-IR), thermal analysis (TGA/DSC) and X-ray diffractometry. Nanoparticles in solution were found to have averaged sizes in the range 223-399 nm, and zeta potential values ranging from -30 to -36 mV. Encapsulated oil levels varied from 1.9 to 4.4% with an encapsulation efficiency of up to 55%. The in vitro release profile showed that between 45 and 95% of oil was released within 30-50h. Kinetic studies revealed that release pattern follow a Korsmeyer-Peppas mechanism.
Descriptors
Links
Book Title
Database
Publisher
Elsevier B.V
Data Source
Authors
de Oliveira,E.F., Paula,H.C., de Paula,R.C.
Original/Translated Title
URL
Date of Electronic
20130905
PMCID
Editors
One stage, full-mouth, ultrasonic debridement in the treatment of severe chronic periodontitis in smokers: a preliminary, blind and randomized clinical trial 2013 Department of Prosthodontics and Periodontics, Piracicaba Dental School, State University of Campinas, Piracicaba, Brazil.
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Journal of the International Academy of Periodontology
Periodical, Abbrev.
J.Int.Acad.Periodontol.
Pub Date Free Form
Jul
Volume
15
Issue
3
Start Page
83
Other Pages
90
Notes
JID: 100888553; ppublish
Place of Publication
England
ISSN/ISBN
1466-2094; 1466-2094
Accession Number
PMID: 24079100
Language
eng
SubFile
Comparative Study; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't; D
DOI
Output Language
Unknown(0)
PMID
24079100
Abstract
OBJECTIVE: The aim of this clinical trial was to assess the performance of a full-mouth ultrasonic debridement protocol in the treatment of severe chronic periodontitis in comparison with scaling and root planing in a quadrant-wise procedure in smokers. MATERIALS AND METHODS: The trial consisted of 30 participants presenting with periodontitis divided into 3 groups: Group FMUD - full-mouth ultrasonic debridement, i.e., one session of 45 minutes of ultrasonic instrumentation for smokers (n = 10), Group SRP- scaling and root planing performed in a quadrant-wise manner for smokers (n = 10), and Group Control - SRP for nonsmokers (n = 10), treated following the same protocol as the SRP group. The parameters evaluated were: plaque/bleeding on probing indices, probing pocket depth, relative recession, and relative probing attachment level at baseline, 45, 90 and 180 days after therapy. RESULTS: Full-mouth ultrasonic debridement and scaling and root planing resulted in comparable gain of attachment 6 months after therapy. Both groups exhibited probing pocket depth reduction at all experimental periods as compared to baseline. Smokers, however, had less probing pocket depth reduction and relative probing attachment level gain compared to non-smokers, despite the mechanical protocol used (p 5 mm and bleeding on probing) than smokers (p
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Book Title
Database
Publisher
Data Source
Authors
Meulman,T., Giorgetti,A.P., Gimenes,J., Casarin,R.C., Peruzzo,D.C., Nociti,F.H.,Jr
Original/Translated Title
URL
Date of Electronic
PMCID
Editors