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Lactoferrin and the development of salivary stones: a pilot study. Biometals 2022; 36:657-665. [PMID: 36396778 PMCID: PMC10181970 DOI: 10.1007/s10534-022-00465-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 11/05/2022] [Indexed: 11/19/2022]
Abstract
AbstractSalivary stones (sialoliths) are calcified structures located in the ductal system of the major salivary glands. Their exact cause is not clear but in general they are characterized by concentric inorganic (hydroxyapatite) layers. The formation is a slow intermittent process which may result in enlargement of the sialolith causing obstruction of saliva secretion resulting in mealtime related pain and swelling of the affected salivary gland. Various studies reported the presence of organic material such as proteins and lipids in the core of sialoliths. In the present study the protein composition of twenty submandibular sialoliths was analyzed. It was found that proteins contributed on average 5% to the dry weight of submandibular stones whereby small salivary stones contained more extractable proteins than large salivary stones. Using a combination of SDS-PAGE gel electrophoresis and Western blotting, we identified α-amylase (in all stones; 100%), lysozyme (95%), lactoferrin (85%), secretory-IgA (75%), MUC7 (60%), complement C4 (60%) and C-reactive protein (35%). The presence, and the combinations, of lactoferrin, lysozyme, s-IgA and α-amylase in sialoliths was confirmed by ELISA. The gradually increasing size of a sialolith might provoke a local inflammatory response in the duct of the submandibular gland whereby the relatively low concentrations of lactoferrin and lysozyme may originate from neutrophils. The interaction of lactoferrin with s-IgA could contribute to the accumulation of lactoferrin in sialoliths. In summary, these results suggest a new pathophysiological role for lactoferrin, in the formation of sialoliths.
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Kraaij S, de Visscher JGAM, Apperloo RC, Nazmi K, Bikker FJ, Brand HS. Lactoferrin and the development of salivary stones: a pilot study. Biometals 2022. [PMID: 36396778 DOI: 10.1007/s10534-022-00465-7/tables/2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/24/2023]
Abstract
Salivary stones (sialoliths) are calcified structures located in the ductal system of the major salivary glands. Their exact cause is not clear but in general they are characterized by concentric inorganic (hydroxyapatite) layers. The formation is a slow intermittent process which may result in enlargement of the sialolith causing obstruction of saliva secretion resulting in mealtime related pain and swelling of the affected salivary gland. Various studies reported the presence of organic material such as proteins and lipids in the core of sialoliths. In the present study the protein composition of twenty submandibular sialoliths was analyzed. It was found that proteins contributed on average 5% to the dry weight of submandibular stones whereby small salivary stones contained more extractable proteins than large salivary stones. Using a combination of SDS-PAGE gel electrophoresis and Western blotting, we identified α-amylase (in all stones; 100%), lysozyme (95%), lactoferrin (85%), secretory-IgA (75%), MUC7 (60%), complement C4 (60%) and C-reactive protein (35%). The presence, and the combinations, of lactoferrin, lysozyme, s-IgA and α-amylase in sialoliths was confirmed by ELISA. The gradually increasing size of a sialolith might provoke a local inflammatory response in the duct of the submandibular gland whereby the relatively low concentrations of lactoferrin and lysozyme may originate from neutrophils. The interaction of lactoferrin with s-IgA could contribute to the accumulation of lactoferrin in sialoliths. In summary, these results suggest a new pathophysiological role for lactoferrin, in the formation of sialoliths.
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Affiliation(s)
- Saskia Kraaij
- Department of Oral and Maxillofacial Surgery/Oral Pathology, Amsterdam University Medical Centers, Location VUmc, and Academic Centre for Dentistry Amsterdam (ACTA), Amsterdam, The Netherlands.
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam (ACTA), Amsterdam, The Netherlands.
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam (ACTA), Room 12N-37, Gustav Mahlerlaan 3004, 1081 LA, Amsterdam, The Netherlands.
| | - Jan G A M de Visscher
- Department of Oral and Maxillofacial Surgery/Oral Pathology, Amsterdam University Medical Centers, Location VUmc, and Academic Centre for Dentistry Amsterdam (ACTA), Amsterdam, The Netherlands
| | - Ruben C Apperloo
- Department of Oral and Maxillofacial Surgery, Amsterdam University Medical Centers, Location AMC, Amsterdam, The Netherlands
| | - Kamran Nazmi
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam (ACTA), Amsterdam, The Netherlands
| | - Floris J Bikker
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam (ACTA), Amsterdam, The Netherlands
| | - Henk S Brand
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam (ACTA), Amsterdam, The Netherlands
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Ozsin-Ozler C, Duruel O, Pinar A, Özbek B, Yaz İ, Ataman-Duruel ET, Uzamis-Tekcicek M, Gunes-Yalcın E, Dogru-Ersoz D, Kiper N, Tezcan İ, Berker E. Dental caries and associated salivary biomarkers in patients with cystic fibrosis. Pediatr Pulmonol 2022; 57:2839-2846. [PMID: 36097860 DOI: 10.1002/ppul.26145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 08/24/2022] [Accepted: 09/08/2022] [Indexed: 11/11/2022]
Abstract
PURPOSE To evaluate the caries status of the Cystic fibrosis (CF) children and adolescents with the comparation of some biochemical markers, secretory-immunoglobulin-A (sIgA), and antimicrobial peptides in the saliva. METHODS In this cross-sectional descriptive study, the approval Ethics Board was obtained. Unstimulated saliva samples were collected from CF and healthy control children (non-CF) patients. Both groups underwent the same dental and periodontal evaluation scheme of the assessment. Human beta defensin (HBD1), human alpha defensin (HNP-1), cathelicidin (LL-37), sIgA in saliva were evaluated by enzyme-linked immunoassay method. A general biochemical analysis was performed. Statistical analysis was performed by using Statistical Package for the Social Sciences Version 20.0 (SPSS Inc.). RESULTS A total of 21 (9 male, 12 female) CF and 23 (11 male, 12 female) control patients were participated with the mean age of 10.17 ± 3.38 and 9.52 ± 2.15 years, respectively. In control children, DMFT/S (decayed-missing-filled-tooth/surface-in-permanent-dentition), dmft/s (decayed-missing-filled-tooth/surface-in-primary-dentition) values were higher; DT (decayed-tooth in permanent dentition), ft (filled-tooth in primary dentition) and plaque index values were statistically significantly higher (p = 0.042, p = 0.005, p = 0.038, respectively) than CF patients. Bicarbonate was higher in control group; sodium, chloride, and total protein were higher in CF group; magnesium, calcium and phosphate levels were similar in each group (p > 0.05). Alpha and beta defensin-1 levels in control group was statistically significantly higher (p = 0.037 and p = 0.020, respectively), while LL37 and sIgA were not statistically significantly higher (p > 0.05) than CF group. CONCLUSIONS Children with CF had lower caries in permanent teeth, filling in primary teeth, and an altered salivary biomarker profile, especially in HNB1, HNP1. Therefore, it is important to conduct periodic oral-dental controls among CF patients during their childhood.
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Affiliation(s)
- Cansu Ozsin-Ozler
- Department of Pediatric Dentistry, Faculty of Dentistry, Hacettepe University, Ankara, Turkey
| | - Onurcem Duruel
- Department of Periodontology, Hacettepe University, Ankara, Turkey
| | - Asli Pinar
- Department of Biochemistry, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Begüm Özbek
- Division of Immunology, Department of Pediatrics, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - İsmail Yaz
- Division of Immunology, Department of Pediatrics, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | | | - Meryem Uzamis-Tekcicek
- Department of Pediatric Dentistry, Faculty of Dentistry, Hacettepe University, Ankara, Turkey
| | - Ebru Gunes-Yalcın
- Division of Pediatric Pulmonology, Department of Pediatrics, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Deniz Dogru-Ersoz
- Division of Pediatric Pulmonology, Department of Pediatrics, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Nural Kiper
- Division of Pediatric Pulmonology, Department of Pediatrics, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - İlhan Tezcan
- Division of Immunology, Department of Pediatrics, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Ezel Berker
- Department of Periodontology, Hacettepe University, Ankara, Turkey
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Parsaie Z, Rezaie P, Azimi N, Mohammadi N. Relationship between Salivary Alpha-Amylase Enzyme Activity, Anthropometric Indices, Dietary Habits, and Early Childhood Dental Caries. Int J Dent 2022; 2022:2617197. [PMID: 35378726 PMCID: PMC8976663 DOI: 10.1155/2022/2617197] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 03/16/2022] [Indexed: 11/25/2022] Open
Abstract
Objectives Although early childhood dental caries (ECC) have the same general etiology as other types of caries, predisposing factors are not well elucidated. This study aimed to investigate the effect of salivary alpha-amylase (sAA) activity, body mass index (BMI), dietary habits, and oral hygiene on ECC. Methods This cross-sectional study was performed on 38 ECC-affected and 41 caries-free children, aged 36 to 72 months. Upon the parents' consent, 3 mL of non-stimulated saliva was collected from the participants to measure the level of sAA activity through spectrophotometry. Additionally, parents/caretakers completed a structured questionnaire about demographic factors, oral hygiene, and consumption of sugar-containing foods. BMI, BMI z-scores, and percentile data were calculated by using an online calculator. The independent variables were dichotomized and tested through chi-square test, followed by a stepwise logistic regression, by using SPSS software (α = 0.05). Results The sAA activity was significantly higher in caries-free children (P ≤ 0.001). However, the mean BMI was not significantly different between the two groups (P=0.49). Brushing and other measured dietary habits were significantly associated with the development of ECC (P ≤ 0.001). According to the results of the logistic regression, sAA activity was shown to be a predictor for ECC development (Odds ratio (95% confidence interval): 0.9 (0.95-0.98)). Conclusion Children with inherently lower levels of sAA activity were more susceptible to dental caries. Improper nutritional habits and poor oral health care could exacerbate the risk of ECC.
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Affiliation(s)
- Zahra Parsaie
- Department of Pediatric Dentistry, Zahedan Dental School, Zahedan University of Medical Sciences, Zahedan, Iran
- Department of Pediatric Dentistry, Shiraz Dental School, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Peyman Rezaie
- Adelaide Medical School and Centre of Research Excellence in Translating Nutritional Science to Good Health, Faculty of Health and Medical Sciences, University of Adelaide, Adelaide 5005, Australia
| | - Niloofar Azimi
- Department of Pediatric Dentistry, Shiraz Dental School, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Najmeh Mohammadi
- Oral and Dental Disease Research Center, Shiraz Dental School, Shiraz University of Medical Sciences, Shiraz, Iran
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Al-ani A, MacDonald DA, Ahmad M. Salivary sIgA and PRAP-1 Protein in Relation to Dental Caries: A Comparative Study. JOURNAL OF ADVANCED ORAL RESEARCH 2020. [DOI: 10.1177/2320206820913746] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Aim: Certain individuals are more prone to dental caries than others are. Caries risk may be related in the secretion of certain defensive salivary proteins including secretory IgA (sIgA) and proline-rich acidic protein (PRAP-1). In this study, we investigated the relationship between PRAP-1 and sIgA leading to the susceptibility of development of dental caries in adults and explored the differences in the levels of sIgA and PRAP-1 between men and women. Materials and Methods: Unstimulated saliva samples were collected from 28 patients with high caries risk and 32 control subjects with low caries risk according to caries management by risk assessment guidelines. sIgA and PRAP-1 levels in clarified saliva samples were measured using the enzyme-linked immunosorbent assay. Results: According to our results, sIgA and PRAP-1 levels did not demonstrate statistically significant differences as a function of caries risk or gender, even when potential confounding variables such as age and numbers of teeth were taken into consideration. Estimates of effect size, however, revealed small- to medium-sized effects and suggest that significant results may have been found if larger sample sizes were used. Conclusion: The results of this study indicate that caries risk and salivary levels of sIgA and PRAP-1 do not appear to be significantly associated. Statistically significant findings could emerge if the sample size was larger.
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Affiliation(s)
- Aseel Al-ani
- Division of Integrated Biomedical and Diagnostic Sciences, University of Detroit Mercy School of Dentistry, 2700 Martin Luther King Jr. Boulevard, Detroit, MI, USA
| | - Douglas A. MacDonald
- Division of Integrated Biomedical and Diagnostic Sciences, University of Detroit Mercy School of Dentistry, 2700 Martin Luther King Jr. Boulevard, Detroit, MI, USA
| | - Maha Ahmad
- Division of Integrated Biomedical and Diagnostic Sciences, University of Detroit Mercy School of Dentistry, 2700 Martin Luther King Jr. Boulevard, Detroit, MI, USA
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Peres CDS, Gava RP, Yoshida NM, Correa JCM, Scudeller LB, Seixas GF, Silva CC, Garbelini CCD, Ramos SDP. Could regular practice of volleyball modulate salivary secretory immunity in children? Cross-sectional and longitudinal studies. APUNTS SPORTS MEDICINE 2020. [DOI: 10.1016/j.apunsm.2020.02.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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