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Pan Y, Fang Z, Chen H, Long Z, Hou X. Visual detection of S 2- with a paper-based fluorescence sensor coated with CdTe quantum dots via headspace sampling. LUMINESCENCE 2021; 36:1525-1530. [PMID: 34048637 DOI: 10.1002/bio.4097] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 05/25/2021] [Accepted: 05/26/2021] [Indexed: 12/17/2022]
Abstract
A simple method was developed in this work for facile and visual detection of S2- using a paper-based fluorescence (FL) sensor coated with CdTe quantum dots (QDs) by headspace sampling. With the addition of hydrochloric acid, the target S2- in the liquid phase would transform to H2 S, which was released to headspace and quenched the FL of CdTe QDs in a linear manner through a gas-solid reaction, with any possible liquid-phase interference avoided. The regular quenching caused by S2- in analyte solution with increased concentration could be easily observed by the naked eye, and the limit of detection (LOD) for this method was 0.13 μM and 0.93 μM for FL and visual sensing, respectively, comparable or not to that by other sensing probes. A relative standard deviation of 1.2% was accomplished from seven replicated measurements, implying the high reproducibility, and the recovery for the spiked water samples ranging from 94 to 103%, and illustrating the satisfactory reliability of this method. Moreover, the preparation of this paper sensor was facile and did not require any complicated or time-consuming procedures for additional modification or functionalization as for other probes previously reported.
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Affiliation(s)
- Yi Pan
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan, China.,Institute of Chemistry, National Institute of Measurement and Testing Technology, Chengdu, Sichuan, China
| | - Zheng Fang
- Institute of Chemistry, National Institute of Measurement and Testing Technology, Chengdu, Sichuan, China
| | - Hanjiao Chen
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan, China
| | - Zhou Long
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan, China
| | - Xiandeng Hou
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan, China
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Sheth TS, Verma SJ. Analysis of aspartate aminotransferase in gingival crevicular fluid: A study with initial therapy. J Indian Soc Periodontol 2011; 15:235-9. [PMID: 22028510 PMCID: PMC3200018 DOI: 10.4103/0972-124x.85666] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2010] [Accepted: 05/08/2011] [Indexed: 12/03/2022] Open
Abstract
Background and Objectives: Conventional diagnostic indicators cannot distinguish between disease activity and inactivity but can detect the past tissue destruction. A proper and true periodontal diagnosis is essential in order to have a rational treatment and preventive strategy and to identify sites at risk. The present longitudinal study was designed with an aim to examine the relationship between gingival crevicular fluid (GCF) levels of aspartate aminotransferase (AST) and periodontal disease progression and to analyze the level of AST in GCF before and after the initial therapy in chronic periodontitis patients and determine the relationship between AST and conventional measures of periodontal status. Materials and Methods: A total of 20 patients with chronic periodontitis were randomly selected. Two diseased sites and one healthy site were selected in each patient. The periodontal status and GCF-AST levels were recorded at baseline and 3 months post-initial therapy and statistically analyzed. Results: There was a statistically significant difference in AST levels between diseased periodontal sites and healthy sites (P<0.05), and between baseline and post-initial therapy (P<0.05). Improvements in clinical status were noted following periodontal therapy and there was a corresponding decrease in AST levels. Interpretation and Conclusion: In conclusion, it is suggested that AST levels may be a useful adjunct in the clinical assessment of periodontal disease sites since AST level decreases when periodontal status improves.
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Affiliation(s)
- Tejal S Sheth
- Department of Periodontics, Ahmedabad Dental College and Hospital, Gandhinagar, Gujarat, India
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Nomura Y, Shimada Y, Hanada N, Numabe Y, Kamoi K, Sato T, Gomi K, Arai T, Inagaki K, Fukuda M, Noguchi T, Yoshie H. Salivary biomarkers for predicting the progression of chronic periodontitis. Arch Oral Biol 2012; 57:413-20. [PMID: 22030151 DOI: 10.1016/j.archoralbio.2011.09.011] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2010] [Revised: 09/17/2011] [Accepted: 09/22/2011] [Indexed: 11/20/2022]
Abstract
OBJECTIVE Predicting the progression of periodontitis would allow for targeted supportive periodontal therapy. The purpose of this study was to determine the usefulness of salivary biomarkers for predicting the progression of periodontitis. DESIGN Eighty-five chronic periodontitis patients were enrolled in an 18-month longitudinal study. Amongst them, 57 experienced progression of periodontitis, indicated at the end of the 18 months by at least one site with >3mm loss of attachment compared with baseline. We determined the levels of aspartate aminotransferase, alanine aminotransferase (ALT), lactate dehydrogenase, alkaline phosphatase and free haemoglobin as biomarkers, as well as the counts of Porphyromonas gingivalis, Prevotella intermedia and Tannerella forsythia, which represented the periodontal bacteria, in the stimulated saliva. The Mann-Whitney U test was used to compare patients with and without progression. After categorising the diagnostic values, the chi-square test was applied. RESULTS Counts and ratios (ratio to total bacteria) of P. gingivalis and P. intermedia were found to be significant predictors of the progression of periodontitis. To increase prediction accuracy, combination analyses were performed. The combination of ALT level and the P. gingivalis ratio showed the highest likelihood (p<0.001, sensitivity 0.40, specificity 0.96, likelihood 11.30). CONCLUSION Our findings suggest that salivary ALT level and the P. gingivalis ratio may be potential indicators for the progression of periodontitis. Such a salivary test could be a useful diagnostic tool for predicting periodontal disease progression.
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Obradovic R, Kesic L, Jovanovic G, Petrovic D, Radicevic G, Mihailovic D. Low power laser efficacy in the therapy of inflamed gingive in diabetics with parodontopathy. VOJNOSANIT PREGL 2011; 68:684-9. [DOI: 10.2298/vsp1108684o] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Background/Aim. There is clear evidence on direct relationship between
periodontal disease and diabetes mellitus. Many investigations point out
greater prevalence and severity of periodontal disease among diabetic
patients. During last decade, low level laser therapy has been used in
periodontal therapy. It has biostimulative effect, accelerates wound healing,
minimizes pain and swelling, and there is almost no contraindication for its
usage. The aim of the paper was to investigate the efficiency of low level
laser therapy as adjuvant tool in reduction of gingival inflammation in
diabetic patients. Methods. The study incuded 150 participants divided into
three groups: group I (50 participants with diabetes mellitus type 1 and
periodontal disease), group II (50 participants with diabetes mellitus type 2
and periodontal disease), group III (nondiabetic participants with
periodontal disease). Gingival health evaluation was done using gingival
index L?e-Silness. Soft and hard deposits were removed, periodontal pockets
cleaned and GaAlAs low level laser therapy (5 mW) applied five consecutive
days. In each patient, low level laser therapy was not applied on the left
side of the jaw in order to compare the effects of the applied therapy. After
the first, third and fifth therapy and one month after the last visit
gingival index was evaluated. Before the first and after the fifth therapy
exfoliative cytology of gingiva was done and nuclei areal was analyzed
morphometrically. Results. After all investigated periods, gingival index and
nuclei areal were significantly decreased comparing to values before the
therapy, at both jaw sides (p < 0.001). After the 1st, 3rd and 5th therapy,
the t-test showed a significantly decreased gingival index at the lased side
of jaw comparing to non-lased side. Conclusion. Low level laser therapy is
efficient in gingival inflammation elimination and can be proposed as an
adjuvant tool in basic periodontal therapy of diabetic patients.
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Miller CS, Foley JD, Bailey AL, Campell CL, Humphries RL, Christodoulides N, Floriano PN, Simmons G, Bhagwandin B, Jacobson JW, Redding SW, Ebersole JL, McDevitt JT. Current developments in salivary diagnostics. Biomark Med 2010; 4:171-89. [PMID: 20387312 PMCID: PMC2857781 DOI: 10.2217/bmm.09.68] [Citation(s) in RCA: 210] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Salivary diagnostics is an emerging field that has progressed through several important developments in the past decade, including the publication of the human salivary proteome and the infusion of federal funds to integrate nanotechnologies and microfluidic engineering concepts into developing compact point-of-care devices for rapid analysis of this secretion. In this article, we discuss some of these developments and their relevance to the prognosis, diagnosis and management of periodontitis, as an oral target, and cardiovascular disease, as a systemic example for the potential of these biodiagnostics. Our findings suggest that several biomarkers are associated with distinct biological stages of these diseases and demonstrate promise as practical biomarkers in identifying and managing periodontal disease, and acute myocardial infarction. The majority of these studies have progressed through biomarker discovery, with the identified molecules requiring more robust clinical studies to enable substantive validation for disease diagnosis. It is predicted that with continued advances in this field the use of a combination of biomarkers in multiplex panels is likely to yield accurate screening tools for these diagnoses in the near future.
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Affiliation(s)
- Craig S Miller
- Oral Medicine Section, MN 324, University of Kentucky College of Dentistry, 800 Rose Street, Lexington, KY 40536-0297, USA Tel.: +1 859 323 5598
| | - Joseph D Foley
- Gill Heart Institute, University of Kentucky, Lexington, KY, USA
| | - Alison L Bailey
- Gill Heart Institute, University of Kentucky, Lexington, KY, USA
| | - Charles L Campell
- Gill Heart Institute, University of Kentucky, Lexington, KY, USA
- Lexington Veterans Administration Hospital, Lexington, KY, USA
| | | | | | | | - Glennon Simmons
- Bioengineering & Chemistry, Rice University, Houston, TX, USA
| | | | | | - Spencer W Redding
- Department of Dental Diagnostic Sciences, University of Texas, San Antonio, TX, USA
| | - Jeffrey L Ebersole
- Oral Medicine Section, MN 324, University of Kentucky College of Dentistry, 800 Rose Street, Lexington, KY 40536-0297, USA Tel.: +1 859 323 5598
| | - John T McDevitt
- Bioengineering & Chemistry, Rice University, Houston, TX, USA
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Sakallioğlu EE, Ayas B, Sakallioğlu U, Yavuz U, Açikgöz G, Firatli E. Osmotic pressure and vasculature of gingiva in experimental diabetes mellitus. J Periodontol 2007; 78:757-63. [PMID: 17397326 DOI: 10.1902/jop.2007.060332] [Citation(s) in RCA: 6] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND Alterations in tissue osmotic pressure (OP) and vasculature are considered to be the inevitable aspects of an inflammatory process that subsequently alter the fluid dynamics of the tissues involved. The aim of this study was to reveal a profile of OP and vascular changes in periodontally healthy gingival tissues and analyze the relationship between them in diabetes mellitus (DM) to evaluate the possible effects of DM on the fluid dynamics of the periodontium. METHODS Experimental DM was created by intraperitoneal streptozotocin injection in 10 periodontally healthy rats. These rats were used as the test group, and 10 systemically and periodontally healthy rats served as the control group. Gingival tissue samples obtained from the groups were used for the test procedures. OP was measured in the supernatants of these samples by a semimicrodigital osmometer. Vasculature was assessed as the alterations in vascularization (vessel number [VN]) and vasodilatation (vessel diameter [VD]) by histomorphometric means. RESULTS There was a gross increase in the OP level of the test group (172.7 +/- 59.7 mOsm/kg) compared to the control group (11.4 +/- 4.2 mOsm/kg; P <0.001). VN was found to be significantly larger in the test group (12.7 +/- 2.8) than in the control group (6.8 +/- 1.1; P <0.001). VD was found to be smaller in the test group (10.1 +/- 2.8 microm) than in the control group (15.5 +/- 2.4 microm), and this difference was statistically significant (P <0.001). A positive correlation between OP and VN (r = 0.77; P <0.001) and a negative correlation between OP and VD (r = 0.1; P >0.05) were observed in the test group. CONCLUSION Our results reveal that the fluid dynamics of periodontal soft tissues may be affected by the diabetic conditions in this diabetic model because of the increased OP and VN during the pathogenesis of the disease.
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Affiliation(s)
- Elif Eser Sakallioğlu
- Department of Periodontology, Faculty of Dentistry, Ondokuz Mayis University, Samsun, Turkey.
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Venza M, Visalli M, Cucinotta M, Cicciù D, Passi P, Teti D. Salivary Histamine Level as a Predictor of Periodontal Disease in Type 2 Diabetic and Non-Diabetic Subjects. J Periodontol 2006; 77:1564-71. [PMID: 16945035 DOI: 10.1902/jop.2006.050373] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND Some previous investigations underscored the role of histamine in periodontal disease, especially in diabetic patients, but the behavior of this inflammatory mediator in the early phases of periodontal involvement remains unclear. The aim of the present study was to correlate the presence of histamine in saliva with clinical parameters in healthy, periodontitis-affected, and diabetic subjects to ascertain whether this amine may serve as a predictive index of periodontal risk. METHODS For this purpose, subjects were selected as follows: 1) with newly diagnosed type 2 diabetes mellitus; 2) with neither diabetes nor periodontitis; 3) with no diabetes but with chronic, untreated periodontal disease. Histamine salivary levels were measured at the initial time (T0) and after 6, 12, and 24 months using high-performance liquid chromatography. The main periodontal indexes were recorded at the same time intervals. RESULTS At T0, a very typical shape of the histamine chromatogram was found for all patients of the three groups; at this time, the salivary histamine levels of diabetic patients were increased and comparable to those of healthy patients with periodontal disease, whereas healthy subjects with no periodontitis showed reduced histamine levels. Further controls at 6, 12, and 24 months showed a statistically significant correlation between the increase of salivary histamine and the worsening of the periodontal indexes in diabetic and non-diabetic subjects. CONCLUSION These results suggest that salivary histamine may serve as a predictive index in the prevention of periodontal disease.
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Affiliation(s)
- Mario Venza
- Department of Odontostomatology, University of Messina, Messina, Italy
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Abstract
Many new technologies have been developed or are being developed that could enhance the ability to diagnose, predict, and treat periodontitis. Newer treatment strategies may allow clinicians to achieve limited or more robust regeneration of the periodontium. New or refreshed approaches to disease control are being pursued that will benefit those suffering from chronic periodontal disease. In addition to novel therapeutics, there has been increasing focus on the development of more sensitive and specific diagnostic tests for periodontal diseases. Such tests will allow the clinician to determine whether a patient has active disease and what sort of attachment loss might be expected if the patient is not treated. By developing newer diagnostic tests, it also may be possible to detect and monitor active disease during therapy.
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Affiliation(s)
- Howard C Tenenbaum
- Discipline of Periodontology, Faculty of Dentistry, University of Toronto, 124 Edward Street, Suite 349C, Toronto, Ontario, Canada M5G 1G6
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