Retraction notice to “Synthetic peptides derived from salivary proteins and the control of surface charge densities of dental surfaces improve the inhibition of dental calculus formation”, Materials Science & Engineering C 77 (2017) 58–68

Surface charge was measured on four synthetic manganese dioxides. Charge densities on two cryptomelanes followed closely the values predicted by a theoretical model. Charge densities on two birnessites were much higher, and did not fit the model.

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Do dental calculi predict the presence of renal stones?

Archivio Italiano di Urologia e Andrologia ◽

10.4081/aiua.2018.3.159 ◽

2018 ◽

Vol 90 (3) ◽

pp. 159-162 ◽

Cited By ~ 1

Author(s):

Bulent Kati ◽

Ergin Kalkan ◽

Eyyup Sabri Pelit ◽

Ismail Yagmur ◽

Halil Çiftçi

Keyword(s):

Kidney Stones ◽

Stone Formation ◽

Renal Stones ◽

The Body ◽

Dental Calculus ◽

Recurrence Rates ◽

Urinary Ph ◽

Dental Hospital ◽

Calculus Formation ◽

The Relationship

Objective: Pathological calcifications that occur in various parts of the body may cause stone formation over time. The structure of these stones is similar in many regions of the body. We have studied the relationship between dental calculi and kidney stones. Material and methods: A total of 183 patients with dental stone complaints or dental calculi were included between April and August 2016 in the Cagri Dental Hospital, Elazig, Turkey. Patients were evaluated with regard to a urinary tract ultrasonography, urinalysis, oral hygiene, and stone and surgical disease history. All information was statistically investigated. Results: The age of the patients in the kidney stones group was significantly higher than the non-kidney stone patients (p < 0.05). In the group with kidney stones, the percentage of dental calculus formation was significantly higher than the group without stones (p < 0.05). In the groups with and without kidney stones, dental stone recurrence rates did not differ significantly (p < 0.05). Urinary pH was significantly lower in the group with stones than the group without stones (p < 0.05). Conclusions: During a physical examination, the formation of a visible stone, such as a dental calculus, may be an indicator of other types of stones, such as kidney stones, and this should be further investigated.

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Spectroscopic investigations in molecularly organized solvent media. Part 2: Examination of the nitromethane selective quenching rule at different ‘effective’ micellar surface charge densities

Journal of Luminescence ◽

10.1016/s0022-2313(96)00303-1 ◽

1997 ◽

Vol 71 (3) ◽

pp. 189-197 ◽

Cited By ~ 4

Author(s):

Siddharth Pandey ◽

William E Acree ◽

John C Fetzer

Keyword(s):

Surface Charge ◽

Charge Densities ◽

Spectroscopic Investigations

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Design and Validation of a Frugal, Automated, Solid-Phase Peptide Synthesizer

10.1101/2020.05.21.109215 ◽

2020 ◽

Author(s):

Nathaniel E. Kallmyer ◽

Nathan E. Rider ◽

Nigel F. Reuel

Keyword(s):

Peptide Synthesis ◽

Self Assembly ◽

Synthetic Peptides ◽

Materials Science ◽

Solid Phase ◽

Solid Phase Peptide Synthesis ◽

Fluid Handling ◽

Price Point ◽

Grade Fluid ◽

Chemistry Laboratories

AbstractSolid phase peptide synthesis (SPPS) has enabled widespread use of synthetic peptides in applications ranging from pharmaceuticals to materials science. The demand for synthetic peptides has driven recent efforts to produce automated SPPS synthesizers which utilize fluid-handling components common to chemistry laboratories to drive costs down to several thousand dollars. Herein, we describe the design and validation of a more ‘frugal’ SPPS synthesizer that uses inexpensive, consumer-grade fluid-handling components to achieve a prototype price point between US$300 and $600. We demonstrated functionality by preparing and characterizing peptides with a variety of distinct properties including binding functionality, nanoscale self-assembly, and oxidation-induced fluorescence. This system yielded micromoles of peptide at a cost of approximately $1/residue, a cost which may be further reduced by optimization and bulk purchasing.

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DIFFERENCES IN DENTAL CALCULUS INDICES AND SALIVARY CALCIUM AND PHOSPHATE LEVELS IN CHILDREN WITH CHRONIC KIDNEY DISEASE UNDERGOING HEMODIALYSIS AND PERITONEAL DIALYSIS THERAPY

Asian Journal of Pharmaceutical and Clinical Research ◽

10.22159/ajpcr.2018.v11i3.23275 ◽

2018 ◽

Vol 11 (3) ◽

pp. 339

Author(s):

Thea Kirana ◽

Heriandi Sutadi ◽

Sarworini B Budiardjo

Keyword(s):

Chronic Kidney Disease ◽

Peritoneal Dialysis ◽

Kidney Disease ◽

Calcium Level ◽

Cross Sectional Study ◽

Dental Calculus ◽

Cross Sectional ◽

Calculus Formation ◽

Unstimulated Saliva ◽

Phosphate Analysis

Objective: The objective of this study is to analyze the differences in dental calculus indices and calcium and phosphate levels in children with chronic kidney disease undergoing hemodialysis (HD) and peritoneal dialysis (PD) therapy.Methods: In this cross-sectional study, 15 children undergoing HD therapy and 15 undergoing PD therapy were subjected to intraoral examination for dental calculus indices. Whole unstimulated saliva samples of all subjects were collected and subjected to calcium and phosphate analysis. Statistical analyses were conducted using the Mann–Whitney and independent t-tests.Results: The dental calculus indices were significantly lower and salivary calcium level was significantly higher in the PD group than those in the HD group (p<0.05). The salivary phosphate level was lower in the PD group (p≥0.05) but without significance.Conclusion: The PD group had lower dental calculus indices and higher salivary calcium level. The higher salivary phosphate levels in the HD group may have contribute to the higher dental calculus indices, probably because phosphate plays an important role in dental calculus formation.

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