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Derikvand N, Basirat M, Ghasemi SS, Hashemi R. The Photobiomodulation effect of 980 nm Diode Laser on Patients with Xerostomia. Lasers Med Sci 2023; 39:10. [PMID: 38117359 DOI: 10.1007/s10103-023-03949-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 12/05/2023] [Indexed: 12/21/2023]
Abstract
PURPOSE Xerostomia is not a disease in itself. This condition is associated with systemic diseases, medication use, and radiotherapy. Oral and general health suffer when the salivary gland´s function is reduced. The effectiveness of therapeutic methods in resolving this issue thus far has been inadequate. This study aimed to determine the photobiomodulation (PBM) effect of a 980 nm laser on xerostomia. METHODS A quasi-experimental study was carried out using a 980 nm diode laser on 28 patients with xerostomia. A diode laser (980 nm) was used extortionally over the submandibular glands and parotids and it was used internally in the sublingual glands. The laser beam (extrorally 6 J, 300mW, 20 s, and introrally 4 J, 200mW, 20 s) was applied bilaterally every other day for 10 sessions. It should be noted that 8 points of the parotid, 2 points of the submandibular glands, and 2 points of the sublingual glands were irradiated. The saliva was collected each session using the Navazesh technique, 5 min before and after PBM. The Wilcoxon test was used to study the effect of laser therapy on saliva flow rate (volume and weight). The P < 0.05 level was considered a significant level. RESULTS The volume (P < 0.0001) and the weight (P < 0.0001) of the saliva were increased by using a 980 nm diode laser. While, in smokers and diabetic patients with hypertension, no significant difference was observed in either saliva volume (P = 0.593, P = 0.092) or weight (P = 0.785, P = 0.089). CONCLUSION In this study, the volume and weight of the unstimulated saliva in most patients with xerostomia increased with using PBM.
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Affiliation(s)
- Nahid Derikvand
- Department of Periodontics, Borujerd Branch, Islamic Azad University, Borujerd, Iran.
| | - Maryam Basirat
- Dental Sciences Research Center, Department of Oral and Maxillofacial Medicine, Faculty of Dentisrtry, Giulan University of Medical Sciences, Rasht, Iran
| | | | - Reza Hashemi
- Borujerd Branch, Islamic Azad University, Borujerd, Iran
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2
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Martins F, Pallos D, Candeia J, Zerbinati R, Braz-Silva PH, Campos L. Noninvasive Techniques for Management of Erythema Multiforme. Case Rep Dent 2023; 2023:9938939. [PMID: 38149304 PMCID: PMC10751166 DOI: 10.1155/2023/9938939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Revised: 11/27/2023] [Accepted: 12/01/2023] [Indexed: 12/28/2023] Open
Abstract
An 18-year-old man was referred for a diagnosis of extensive oral lesions. During the interview, he reported a medical history of ganglionic tuberculosis, type 2 herpes infection, and significant weight loss due to dysphagia. Intraoral exam revealed multiple painful and ulcerated lesions covered by pseudomembrane. Lesions were observed on the labial and buccal mucosa, tongue, and soft palate. The laboratory findings included serum positivity for the Epstein-Barr virus, and salivary tests showed positive values for herpes simplex virus (HSV-2) and human herpesvirus (HHV-7). The diagnostic hypothesis was based on clinical findings and viral infection detected in the saliva, which triggered an immunological disorder, that is, erythema multiforme (EM). The treatment consisted of antimicrobial photodynamic therapy (aPDT), with substantial improvement in pain and healing as seen in the following twenty-four hours. Complete resolution of the lesions was achieved five days after the first session. Once the diagnosis of virus-induced EM was confirmed, noninvasive techniques (e.g., salivary tests and aPDT) were very successful and can be indicated for managing these lesions.
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Affiliation(s)
- Fabiana Martins
- Postgraduate Program in Dentistry, School of Dentistry, University of Santo Amaro, Rua Prof. Enéas de Siqueira Neto, 340-Jardim das Imbuias, São Paulo, SP 04829-300, Brazil
- Department of Stomatology, School of Dentistry, University of São Paulo, Av. Prof. Lineu Prestes, 2227, São Paulo, SP 05508-000, Brazil
| | - Debora Pallos
- Postgraduate Program in Dentistry, School of Dentistry, University of Santo Amaro, Rua Prof. Enéas de Siqueira Neto, 340-Jardim das Imbuias, São Paulo, SP 04829-300, Brazil
| | - Jodkandlys Candeia
- Postgraduate Program in Dentistry, School of Dentistry, University of Santo Amaro, Rua Prof. Enéas de Siqueira Neto, 340-Jardim das Imbuias, São Paulo, SP 04829-300, Brazil
| | - Rodrigo Zerbinati
- Laboratory of Virology (LIM-52), Institute of Tropical Medicine of São Paulo, School of Medicine, University of São Paulo, Rua Prof. Enéas Carvalho de Aguiar, 470-Cerqueira Cesar, São Paulo, SP 05403-000, Brazil
| | - Paulo Henrique Braz-Silva
- Department of Stomatology, School of Dentistry, University of São Paulo, Av. Prof. Lineu Prestes, 2227, São Paulo, SP 05508-000, Brazil
- Laboratory of Virology (LIM-52), Institute of Tropical Medicine of São Paulo, School of Medicine, University of São Paulo, Rua Prof. Enéas Carvalho de Aguiar, 470-Cerqueira Cesar, São Paulo, SP 05403-000, Brazil
| | - Luana Campos
- Postgraduate Program in Dentistry, School of Dentistry, University of Santo Amaro, Rua Prof. Enéas de Siqueira Neto, 340-Jardim das Imbuias, São Paulo, SP 04829-300, Brazil
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Melo JLDMA, Coelho CPES, Nunes FDPES, Heller D, Grisi DC, Guimarães MDCM, Dame-Teixeira N. A scoping review on hyposalivation associated with systemic conditions: the role of physical stimulation in the treatment approaches. BMC Oral Health 2023; 23:505. [PMID: 37480103 PMCID: PMC10360219 DOI: 10.1186/s12903-023-03192-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 06/30/2023] [Indexed: 07/23/2023] Open
Abstract
BACKGROUND Several systemic conditions can result in distinct degrees of salivary gland damage and consequent hypofunction. The development of successful management schemes is highly challenging due to the complexity of saliva. This study aimed to systematically map the literature on the physical stimulation of salivary glands for hyposalivation management and the response of individuals according to different systemic conditions causing salivary impairment. METHODS A systematic search in the literature was performed. Two reviewers independently selected clinical trials, randomized or not, that used physical stimulation to treat hyposalivation caused by systemic conditions. Studies evaluating healthy subjects without hyposalivation were included as controls. Single-arm clinical studies or case series were also included for protocol mapping (PRISMA extension for scoping reviews). RESULTS Out of 24 included studies, 10 evaluated healthy subjects, from which 9 tested transcutaneous electrical nerve stimulation (TENS) and 1 tested acupuncture and electroacupuncture. Fourteen studies evaluated individuals with hyposalivation: 6 applied TENS, 6 applied low-level laser therapy (LLLT), and 2 applied acupuncture, carried out in post-chemotherapy, medication use, postmenopausal women, hemodialysis patients, smokers, diabetics, Sjögren's syndrome (SS). All showed increased salivation after treatment, except for two LLLT studies in individuals with SS. CONCLUSIONS Among the different patient groups, individuals with Sjögren's syndrome (SS) exhibited the poorest responses, while those with medication-induced hyposalivation demonstrated the most favorable treatment outcomes, independently of the management strategy for saliva stimulation. It means that physical stimulation of salivary glands holds promise as an alternative for managing hyposalivation in cases of reversible gland damage. However, to make informed decisions in current practice, it is necessary to conduct new well-designed randomized clinical trials with appropriate methodologies.
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Affiliation(s)
| | | | | | - Debora Heller
- Post Graduate Program in Dentistry, Cruzeiro Do Sul University, São Paulo, Brazil
- Experimental Research, Hospital Israelita Albert Einstein, São Paulo, Brazil
- Department of Periodontology, UT Health San Antonio, San Antonio, TX, USA
| | - Daniela Corrêa Grisi
- Department of Dentistry, School of Health Sciences, University of Brasilia, Brasília, Brazil.
| | | | - Naile Dame-Teixeira
- Department of Dentistry, School of Health Sciences, University of Brasilia, Brasília, Brazil.
- Oral Biology Division, School of Dentistry, University of Leeds, Leeds, UK.
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Impact of photobiomodulation therapy on the morphological aspects of submandibular gland submitted to excretory duct ligation and hypothyroidism: an animal study. Lasers Med Sci 2021; 37:2005-2015. [PMID: 34797432 DOI: 10.1007/s10103-021-03463-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 11/04/2021] [Indexed: 10/19/2022]
Abstract
The aim of this study was to evaluate the impact of photobiomodulation therapy (PBMT) on histomorphological aspects of submandibular gland (SMG) submitted to salivary gland duct obstruction in hypothyroid rats. Fifty-six male Wistar rats (250 to 300 g) were divided into 4 groups (n = 14): euthyroid (EU), EU + PBMT, hypothyroid (HYPO), and HYPO + PBMT. Duct obstruction of the left submandibular gland (LSMG) was performed in all animals by a ligature procedure. For the induction of hypothyroidism, total thyroidectomy was performed. PBMT groups received irradiation with AlGaInP diode laser (808 nm, 0.04 W, 0.04cm2 spot size, 60 s, 2.4 J per point, 60 J/cm2, 1 W/cm2). Irradiation was performed immediately, 24 h, and 48 h after the obstruction of the salivary gland duct, in one point, extra oral and perpendicular to the gland. Animals were sacrificed after 24 h and 72 h after duct ligature. Our results indicated that salivary duct obstruction and hypothyroidism caused negative modifications on the salivary glands' histomorphology, especially acinar atrophy, after 24 h and 72 h. HYPO + PBMT showed a significant reduction of the inflammatory infiltrate, congested blood vessels, and acinar atrophy in the SMG submandibular salivary gland in 72 h compared to 24 h (p < 0.05). In conclusion, obstruction of the salivary gland excretory duct and hypothyroidism causes severe sialoadenitis with expressive atrophy of the glandular parenchyma. However, PBMT was able to modulate the inflammatory process and delaying acinar atrophy. This study provided insights to better understand the role of the PBMT on the altered salivary gland by duct ligation and associate hypothyroidism.
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Golež A, Frangež I, Cankar K, Frangež HB, Ovsenik M, Nemeth L. Effects of low-level light therapy on xerostomia related to hyposalivation: a systematic review and meta-analysis of clinical trials. Lasers Med Sci 2021; 37:745-758. [PMID: 34409539 DOI: 10.1007/s10103-021-03392-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 07/26/2021] [Indexed: 02/06/2023]
Abstract
Hyposalivation is a condition represented by a reduced salivary flow and may include symptoms such as mouth dryness (xerostomia), loss of taste, pain, dysphagia, and dysphonia, all of which greatly affect an individual's quality of life.The aim of the present study was to systematically review the effects of low-level light therapy irradiation (photobiomodulation) on salivary gland function in patients with hyposalivation.The main question of the systematic review was: "Does low-level light irradiation therapy of the salivary glands affect salivary flow rate or indicators of salivary function (ion and protein concentrations) in patients with xerostomia or hyposalivation?" The question was based on the PICO (participant, intervention, control, outcome) principle and followed the PRISMA guidelines. Databases were explored and papers published between the years 1997 and 2020 were reviewed for the following Mesh-term keywords and their corresponding entry terms in different combinations: "Low-level light therapy," "Xerostomia," "Saliva," "Salivary glands," "Salivation."The initial sample consisted of 220 articles. Of those, 47 articles were used for full-text analysis and 18 were used for a systematic review, 14 were used in meta-analysis. According to their individual quality, most articles were classified as high quality of evidence according to the GRADE score. Meta-analysis of the evidence observed increase of unstimulated salivary flow 0.51 SMD compared to placebo (95% CI: 0.16-0.86), I2 = 50%, p = 0.005.The findings of our review revealed evidence of a beneficial effect of photobiomodulation therapy on salivary gland function. The therapy alleviates xerostomia and hyposalivation. However, these effects are reported short term only and did not induce lasting effects of photobiomodulation therapy on patients' quality of life.
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Affiliation(s)
- Aljaž Golež
- Institute of Physiology, Faculty of Medicine, University of Ljubljana, Zaloska cesta 4, Ljubljana, Slovenia
| | - Igor Frangež
- Department for Surgical Infections, University Medical Center Ljubljana, Zaloska cesta 2, 1000, Ljubljana, Slovenia.,Department of Surgery, Faculty of Medicine, University of Ljubljana, Zaloska cesta 7, Ljubljana, Slovenia
| | - Ksenija Cankar
- Institute of Physiology, Faculty of Medicine, University of Ljubljana, Zaloska cesta 4, Ljubljana, Slovenia
| | - Helena Ban Frangež
- Department of Gynaecology and Obstetrics, Faculty of Medicine, University of Ljubljana, Slajmerjeva 3, 1000, Ljubljana, Slovenia.,Department of Obstetrics and Gynaecology, University Medical Center Ljubljana, Slajmerjeva 3, 1000, Ljubljana, Slovenia
| | - Maja Ovsenik
- Department of Orthodontics and Dentofacial Orthopaedics, Faculty of Medicine, University of Ljubljana, Hrvatski trg 6, Ljubljana, Slovenia
| | - Lidija Nemeth
- Department of Dental Diseases and Normal Dental Morphology, Faculty of Medicine, University of Ljubljana, Hrvatski trg 6, Ljubljana, Slovenia.,Division of Stomatology, University Medical Centre Ljubljana, Stomatoloska klinika, Hrvatski trg 6, 1000, Ljubljana, Slovenia
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Pavesi VCS, Martins MD, Coracin FL, Sousa AS, Pereira BJ, Prates RA, da Silva JF, Gonçalves MLL, Bezerra CDS, Bussadori SK, Varellis MLZ, Deana AM. Effects of photobiomodulation in salivary glands of chronic kidney disease patients on hemodialysis. Lasers Med Sci 2021; 36:1209-1217. [PMID: 33745088 DOI: 10.1007/s10103-020-03158-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 10/07/2020] [Indexed: 12/15/2022]
Abstract
This randomized placebo-controlled trial evaluates the impact of photobiomodulation (PBMT) on the salivary flow and biochemistry of patients with chronic kidney disease (CKD) on hemodialysis. Forty-four patients on hemodialysis self-responded two questionnaires for oral health and salivary gland function perception. The subjects were evaluated for function of salivary glands and randomly allocated to two groups: PBMT group (three irradiations at 808 nm, 100 mW, 142 J/cm2, and 4 J per site); and placebo group. Patients were submitted to non-stimulated and stimulated sialometry and after the treatment at baseline and 14 days. Salivary volume and biochemical of the saliva were analyzed. At baseline, most subjects had self-perception of poor oral health (52.6%) and salivary dysfunction (63.1%). Clinical exam revealed that 47.3% of subjects presented dry mucosa. PBMT promoted increase of the non-stimulated (p = 0.027) and stimulated saliva (p = 0.014) and decrease of urea levels in both non-stimulated (p = 0.0001) and stimulated saliva (p = 0.0001). No alteration was detected in total proteins and calcium analysis. Patients with kidney disease can present alteration in flow, concentrations, and composition of saliva, affecting oral health, but our findings suggest that PBMT is effective to improve hyposalivation and urea levels in saliva of patients with CKD.
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Affiliation(s)
| | - Manoela Domingues Martins
- Universidade Federal do Rio Grande do Sul (UFRGS), R. Ramiro Barcelos, 2492 Santa Cecilia, Porto Alegre, RS, Brazil
| | - Fábio Luiz Coracin
- Universidade Nove de Julho (UNINOVE), R. vergueiro, 235 Liberdade, São Paulo, SP, Brazil
| | - Aline Silva Sousa
- Universidade Nove de Julho (UNINOVE), R. vergueiro, 235 Liberdade, São Paulo, SP, Brazil
| | - Benedito Jorge Pereira
- Universidade Nove de Julho (UNINOVE), R. vergueiro, 235 Liberdade, São Paulo, SP, Brazil
| | - Renato Araújo Prates
- Universidade Nove de Julho (UNINOVE), R. vergueiro, 235 Liberdade, São Paulo, SP, Brazil
| | | | | | | | - Sandra Kalil Bussadori
- Universidade Nove de Julho (UNINOVE), R. vergueiro, 235 Liberdade, São Paulo, SP, Brazil
| | | | - Alessandro Melo Deana
- Universidade Nove de Julho (UNINOVE), R. vergueiro, 235 Liberdade, São Paulo, SP, Brazil.
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Markoulli M, Chandramohan N, Papas EB. Photobiomodulation (low-level light therapy) and dry eye disease. Clin Exp Optom 2021; 104:561-566. [PMID: 33689636 DOI: 10.1080/08164622.2021.1878866] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Dry eye disease is one of the most common, chief-complaints presenting in clinical practice, with a prevalence of up to 50%. Evaporative dry eye, as a result of meibomian gland dysfunction, is thought to be the biggest component factor. Treatments for meibomian gland dysfunction aim to restore tear film homoeostasis and include warm compress therapy, eyelid hygiene, in-office meibomian gland expression and lipid-containing, artificial tears. A recent introduction to the in-office treatments available for meibomian gland dysfunction has been low-level light therapy, also known as photobiomodulation. The technique involves applying red, or near infra-red, radiation using low-power light sources and is suggested to promote tissue repair, decrease inflammation, and relieve pain. This work aims to review the available literature on the efficacy and safety of photobiomodulation in meibomian gland dysfunction and dry eye disease, as well as what is currently known about its mechanism of action.
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Affiliation(s)
- Maria Markoulli
- School of Optometry & Vision Science, University of New South Wales, Sydney, Australia
| | - Nivaasheni Chandramohan
- School of Optometry & Vision Science, University of New South Wales, Sydney, Australia.,Macular Degeneration Foundation Australia, Sydney, Australia
| | - Eric B Papas
- School of Optometry & Vision Science, University of New South Wales, Sydney, Australia
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8
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Fukuoka CY, Vicari HP, Sipert CR, Bhawal UK, Abiko Y, Arana-Chavez VE, Simões A. Early effect of laser irradiation in signaling pathways of diabetic rat submandibular salivary glands. PLoS One 2020; 15:e0236727. [PMID: 32750068 PMCID: PMC7402516 DOI: 10.1371/journal.pone.0236727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 07/12/2020] [Indexed: 11/19/2022] Open
Abstract
Low-power laser irradiation (LPLI) is clinically used to modulate inflammation, proliferation and apoptosis. However, its molecular mechanisms are still not fully understood. This study aimed to describe the effects of LPLI upon inflammatory, apoptotic and proliferation markers in submandibular salivary glands (SMGs) in an experimental model of chronic disorder, 24h after one time irradiation. Diabetes was induced in rats by the injection of streptozotocin. After 29 days, these animals were treated with LPLI in the SMG area, and euthanized 24h after this irradiation. Treatment with LPLI significantly decreased diabetes-induced high mobility group box 1 (HMGB1) and tumor necrosis factor alpha (TNF-α) expression, while enhancing the activation of the transcriptional factor cAMP response element binding (CREB) protein. LPLI also reduced the expression of bax, a mitochondrial apoptotic marker, favoring the cell survival. These findings suggest that LPLI can hamper the state of chronic inflammation and favor homeostasis in diabetic rats SMGs.
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Affiliation(s)
- Cíntia Yuki Fukuoka
- Laboratory of Oral Biology, Department of Biomaterials and Oral Biology, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Hugo Passos Vicari
- Laboratory of Oral Biology, Department of Biomaterials and Oral Biology, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Carla Renata Sipert
- Division of Endodontics, Department of Restorative Dentistry, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Ujjal Kumar Bhawal
- Department of Biochemistry and Molecular Biology, Nihon University School of Dentistry at Matsudo, Matsudo, Chiba, Japan
| | - Yoshimitsu Abiko
- Department of Biochemistry and Molecular Biology, Nihon University School of Dentistry at Matsudo, Matsudo, Chiba, Japan
| | - Victor Elias Arana-Chavez
- Laboratory of Oral Biology, Department of Biomaterials and Oral Biology, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Alyne Simões
- Laboratory of Oral Biology, Department of Biomaterials and Oral Biology, School of Dentistry, University of São Paulo, São Paulo, Brazil
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9
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The impact of photobiomodulation of major salivary glands on caries risk. Lasers Med Sci 2019; 35:193-203. [PMID: 31325124 DOI: 10.1007/s10103-019-02845-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Accepted: 07/11/2019] [Indexed: 12/17/2022]
Abstract
Dental caries is a complex multifactorial chronic infectious disease guided by several risk or protective factors. Saliva has an important role in caries and the remineralization process. Caries risk assessment is defined as the probability of new caries lesion development or the existing lesion progression in a given time period. Caries diagnostics and risk factor assessment are followed by targeted elimination of risk factors and less conservative but abundant preventive therapeutic measures. The aim of our prospective randomized study was to elucidate on how photobiomodulation of major salivary glands with polychromatic light or LED light affects caries risk factors in high caries-risk patients. Thirty-six patients were assigned to one of the following three experimental groups: the first, irradiated with polarized polychromatic light (40 mW/cm2, wavelengths 480-3400 nm); the second, a continuous LED light (16 mW/cm2, wavelengths 625, 660, 850 nm); the third, same LED light in a pulsed mode. The fourth group was the control, for which a non-therapeutic visible light was used. Light was administered extra-orally bilaterally above the parotid and submandibular glands for 10 min and intra-orally above the sublingual glands for 5 min, 3 times a week, for 4 consecutive weeks. Each patient's caries risk was assessed according to Cariogram before and after therapy. Caries risk factors were determined from samples of saliva before therapy, two weeks after it commenced, at the end of therapy, and four weeks after the end of therapy. At the end of treatment, the following findings were obtained: In the group irradiated with polarized polychromatic light and in the group irradiated with continuous LED light, the Streptococcus mutans and Lactobacillus counts decreased and salivary buffering capacity increased (p < 0.05). In the group irradiated with pulsed LED light, Streptococcus mutans counts decreased and unstimulated salivary flow and salivary buffering capacity increased (p < 0.05). In all three experimental groups, caries risk was lower (p < 0.05). In the placebo control group, there were no statistically significant differences between parameters before and after therapy. We concluded that photobiomodulation of major salivary glands in high caries-risk patients can reduce the cariogenic bacteria in saliva and improve some salivary parameters, thus reducing caries risk.
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10
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de Castro JR, de Souza EMN, Park YJ, de Campos L, Cha S, Arana-Chavez VE, Nicolau J, Simões A. Low-power laser irradiation decreases lipid droplet accumulation in the parotid glands of diabetic rats. JOURNAL OF BIOPHOTONICS 2018; 11:e201700179. [PMID: 29112328 DOI: 10.1002/jbio.201700179] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Accepted: 11/03/2017] [Indexed: 06/07/2023]
Abstract
Lipid droplet accumulation has been related to salivary gland hypofunction in diabetes. In this study, the effect of laser irradiation on the parotid glands (PGs) of diabetic rats was analyzed with regard to its effect on lipid droplet accumulation, intracellular calcium concentration and calmodulin expression. The animals were distributed into 6 groups: D0, D5, D20 and C0, C5, C20, for diabetic (D) and control animals (C), respectively. Twenty-nine days following diabetes induction, PGs of groups D5 and C5; D20 and C20 were irradiated with 5 and 20 J/cm2 of a red diode laser at 100 mW, respectively. After 24 hours, PGs were removed for histological, biochemical, and western blotting analysis. The diabetic animals showed lipid droplet accumulation, which was decreased after irradiation. Ultrastructurally, the droplets were nonmembrane bound and appeared irregularly located in the cytoplasm. Moreover, diabetic animals showed an increased intracellular calcium concentration. In contrast, after laser irradiation a progressive decrease in the concentration of this ion was observed, which would be in agreement with the results found in the increased expression of calmodulin in D20. These data are promising for using laser to decrease lipid droplet accumulation in PGs, however, more studies are necessary to better understand its mechanisms. Micrographs showing decreased lipid accumulation after laser irradiation in light micrographs (LM), and morphology of lipid droplet in transmission electron microscopic (TEM). LM: (A) PGs from nondiabetic rats that did not receive Laser irradiation (LI), (B) PGs from nondiabetic rats that received a dose of 20 J/cm2 , (C) lipid accumulation (arrows) in the secretory cells from diabetic rats that did not receive irradiation, (D) reduction of lipid accumulation in the secretory cells from diabetic rats that received a dose of 20 J/cm2 and TEM: (E) scale bar = 5 μm, (F) scale bar = 1 μm, and (G) scale bar = 0.5 μm.
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Affiliation(s)
- Juliana R de Castro
- Laboratory of Oral Biology, Department of Biomaterials and Oral Biology, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Eugen M N de Souza
- Laboratory of Oral Biology, Department of Biomaterials and Oral Biology, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Yun-Jong Park
- Oral Maxillofacial Diagnostic Sciences, College of Dentistry, University of Florida, Gainesville, Florida
| | - Luana de Campos
- Laboratory of Oral Biology, Department of Biomaterials and Oral Biology, School of Dentistry, University of São Paulo, São Paulo, Brazil
- Department of Oral Medicine, Brazilian Institute for Cancer Control, São Paulo, Brazil
| | - Seunghee Cha
- Oral Maxillofacial Diagnostic Sciences, College of Dentistry, University of Florida, Gainesville, Florida
| | - Victor E Arana-Chavez
- Laboratory of Oral Biology, Department of Biomaterials and Oral Biology, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - José Nicolau
- Laboratory of Oral Biology, Department of Biomaterials and Oral Biology, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Alyne Simões
- Laboratory of Oral Biology, Department of Biomaterials and Oral Biology, School of Dentistry, University of São Paulo, São Paulo, Brazil
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Brzak BL, Cigić L, Baričević M, Sabol I, Mravak-Stipetić M, Risović D. Different Protocols of Photobiomodulation Therapy of Hyposalivation. Photomed Laser Surg 2018; 36:78-82. [DOI: 10.1089/pho.2017.4325] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Božana Lončar Brzak
- Department of Oral Medicine, School of Dental Medicine, University of Zagreb, Zagreb, Croatia
| | - Livia Cigić
- Department of Oral Medicine and Periodontology, School of Medicine, University of Split, Split, Croatia
| | | | - Ivan Sabol
- Department of Molecular Medicine, Ruđer Bošković Institute, Zagreb, Croatia
| | - Marinka Mravak-Stipetić
- Department of Oral Medicine, School of Dental Medicine, University of Zagreb, Zagreb, Croatia
| | - Dubravko Risović
- Molecular Physics Laboratory, Ruđer Bošković Institute, Centre of Excellence for Advanced Materials and Sensing Devices, Zagreb, Croatia
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12
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Low-level laser therapy for xerostomia in primary Sjögren’s syndrome: a randomized trial. Clin Rheumatol 2017; 37:729-736. [DOI: 10.1007/s10067-017-3898-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 10/19/2017] [Accepted: 10/27/2017] [Indexed: 10/18/2022]
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Fukuoka CY, Simões A, Uchiyama T, Arana-Chavez VE, Abiko Y, Kuboyama N, Bhawal UK. The Effects of Low-Power Laser Irradiation on Inflammation and Apoptosis in Submandibular Glands of Diabetes-Induced Rats. PLoS One 2017; 12:e0169443. [PMID: 28099448 PMCID: PMC5242424 DOI: 10.1371/journal.pone.0169443] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Accepted: 12/18/2016] [Indexed: 12/11/2022] Open
Abstract
Diabetes can lead to dysfunction of the secretory capacity in salivary glands. Activation of the receptor for advanced glycation end products (RAGE) and its ligands has been suggested to participate in chronic disorders such as diabetes and its complications. In this study, the expression of RAGE, high mobility group box 1 (HMGB1) and advanced glycation end products (AGE), as well as the effects of low-power laser irradiation (LPLI) in salivary glands of diabetic rats were evaluated, and the mechanisms involved were characterized. The expression of RAGE and HMGB1 at the protein and mRNA levels was observed in submandibular glands (SMGs) of streptozotocin-induced diabetic rats. A diode laser was applied at 660 nm, 70 mW, 20 J/cm2, 0.56 J/point, with a spot area of 0.028 cm2 and its in vivo effects and the pathways involved were evaluated. Immunohistochemistry and western blotting analysis were performed for inflammatory and apoptosis markers. Diabetes up-regulates HMGB1/AGE/RAGE axis gene expression in SMGs that is associated with activation of the nuclear factor kappa B (NF-κB) pathway. Interestingly, LPLI suppresses NF-κB activation induced by inflammation. LPLI also reduces diabetes-induced apoptosis. That effect was accompanied by decreased levels of Bax, and cleaved caspase 3, which were up-regulated in diabetes. Taken together, our data suggest that LPLI reduces diabetes-induced inflammation by reducing the induction of HMGB1, ultimately leading to inhibition of apoptosis in submandibular glands of diabetic rats.
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Affiliation(s)
- Cíntia Yuki Fukuoka
- Department of Biomaterials and Oral Biology, São Paulo University, School of Dentistry, São Paulo, Brazil
| | - Alyne Simões
- Department of Biomaterials and Oral Biology, São Paulo University, School of Dentistry, São Paulo, Brazil
- * E-mail: (UKB); (AS)
| | - Toshikazu Uchiyama
- Department of Social Dentistry (Medical Informatics), Nihon University School of Dentistry at Matsudo, Matsudo, Chiba, Japan
| | - Victor Elias Arana-Chavez
- Department of Biomaterials and Oral Biology, São Paulo University, School of Dentistry, São Paulo, Brazil
| | - Yoshimitsu Abiko
- Department of Biochemistry and Molecular Biology, Nihon University School of Dentistry at Matsudo, Matsudo, Chiba, Japan
| | - Noboru Kuboyama
- Research Institute of Oral Science, Nihon University School of Dentistry at Matsudo, Matsudo, Chiba, Japan
| | - Ujjal K. Bhawal
- Department of Biochemistry and Molecular Biology, Nihon University School of Dentistry at Matsudo, Matsudo, Chiba, Japan
- * E-mail: (UKB); (AS)
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Terlević Dabić D, Jurišić S, Vučićević Boras V, Gabrić D, Bago I, Vrdoljak DV. The Effectiveness of Low-Level Laser Therapy in Patients with Drug-Induced Hyposalivation: A Pilot Study. Photomed Laser Surg 2016; 34:389-93. [PMID: 27415181 DOI: 10.1089/pho.2016.4109] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE The aim of this study was to compare switched on and switched off (sham) low-level laser therapy (LLLT) in the treatment of drug-induced hyposalivation. BACKGROUND DATA Hyposalivation is decreased salivary flow rate most frequently present in patients who take a lot of medication, suffer from Sjögren's syndrome, or were irradiated. Available therapies provide only short-term relief. MATERIALS AND METHODS Forty-three participants (40 females and 3 males, average age 72.3 ± 8.9) participated in the study. Before therapy or after therapy, every participant fulfilled quality-of-life assessment scale (OHIP-CRO14). Unstimulated and stimulated salivary flow rates were measured before and after treatment. The LLLT was performed by the use of gallium-aluminum-arsenide (GaAlAs) laser (830 nm) on parotid, submandibular, and sublingual glands every day except during weekends for 14 days. RESULTS Significant difference in unstimulated salivary flow rate after the treatment was found in the study group (p = 0.002) compared with the sham group. No significant difference in stimulated salivary flow rate after treatment was found in the laser group (p = 0.626) nor in the sham laser group (p = 0.233). No significant difference in patient's quality-of-life score was found after both treatments. CONCLUSIONS The results of this study showed that the LLLT increased unstimulated salivary flow rate significantly. However, stimulated salivary flow rate did not increase significantly after the LLLT. In patients who underwent sham laser therapy, neither unstimulated nor stimulated salivary flow rate increased significantly.
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Affiliation(s)
| | | | - Vanja Vučićević Boras
- 3 Department of Oral Medicine, School of Dental Medicine and Clinical Hospital Centre Zagreb , Zagreb, Croatia
| | - Dragana Gabrić
- 4 Department of Oral Surgery, School of Dental Medicine, University of Zagreb , Zagreb, Croatia
| | - Ivona Bago
- 5 Department of Endodontics and Restorative Dentistry, School of Dental Medicine, University of Zagreb , Zagreb, Croatia
| | - Danko Velimir Vrdoljak
- 6 National Cancer Institute, Clinical Hospital Center Sisters of Mercy , Zagreb, Croatia
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15
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In vitro photoinactivation of bovine mastitis related pathogens. Photodiagnosis Photodyn Ther 2016; 13:276-281. [DOI: 10.1016/j.pdpdt.2015.08.007] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Revised: 08/18/2015] [Accepted: 08/19/2015] [Indexed: 12/24/2022]
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Oral Rehabilitation and Management for Secondary Sjögren’s Syndrome in a Child. Case Rep Dent 2016; 2016:3438051. [PMID: 28003916 PMCID: PMC5149684 DOI: 10.1155/2016/3438051] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Revised: 11/07/2016] [Accepted: 11/08/2016] [Indexed: 11/24/2022] Open
Abstract
The aim of this paper is to describe a rare case report of a pediatric patient with secondary Sjögren's syndrome (SSS). A 12-year-old female child was referred to the Pediatric Dentistry Clinic with the chief complaint of tooth pain, dry mouth, and tooth sensibility. The patient was submitted to orthodontic treatment prior to syndrome diagnosis. The clinical treatment consisted of the interruption of orthodontic treatment and restoring the oral condition with dental treatment and the use of artificial saliva in an innovative apparatus. Dental therapy involved the control of dental caries, periodontal disease, and opportunistic fungal infections and the use of fluoride-rich solutions. The present clinical case describes clinical and laboratory aspects of SSS in pediatric patients. The management of the oral findings promoted an improvement in the oral health status and quality of life of the child.
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Esfahani MN, Madani G, Madhkhan S. A novel method of anal fissure laser surgery: a pilot study. Lasers Med Sci 2015; 30:1711-7. [PMID: 26067925 DOI: 10.1007/s10103-015-1771-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2014] [Accepted: 05/14/2015] [Indexed: 10/23/2022]
Abstract
Anal fissure is a common painful problem, affecting all age groups. Its pathophysiology is based on high sphincter pressures and reduced blood supplying and treatments which means that it generally reduces anal pressures and increases anodermal blood flow. Since each of the anal fissure's routine therapies has some limitations such as definite risk of permanent fecal incontinence and high recurrence rate, we tried to find a more effective and less invasive procedure. In this pilot study which was implemented on 25 male and female patients aged 20-75 years, diagnosed clinically with chronic anal fissure, the Carbon Dioxide Laser Fractional was used to treat patients. In order to first remove fibrotic and granulation tissues, the base and the edges of the fissure were laser beamed. Eight spots were made on the sphincter by the laser on its continuous mode; somehow, they were passed through the full thickness of sphincter without interrupting its continuance. Afterwards, the area around the fissure ulcer was irradiated by deep fractional mode of the laser to stimulate the submucosa to regenerate and rejuvenate. After going through this procedure, patients were followed up within 6 months to 1 year. Pain, bleeding, and constipation were significantly improved. None of the patients had recurrence after a 1-year follow-up, and none of them had fecal incontinence and/or inability to control the passage of gas too. This study revealed that this new laser-based surgery is a simple, safe, and effective procedure to treat the anal fissure that can be performed with local anesthesia in an outpatient clinic with minimal postoperative morbidity.
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Ozturan S, Sirali A, Sur H. Effects of Nd:YAG laser irradiation for minimizing edema and pain after sinus lift surgery: randomized controlled clinical trial. Photomed Laser Surg 2015; 33:193-9. [PMID: 25764523 DOI: 10.1089/pho.2014.3823] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVE The aim of the present study was to evaluate the effectiveness of neodymium-doped yttrium aluminum garnet (Nd:YAG) laser used for low-level laser therapy (LLLT) on pain, oral health-related quality of life (OHRQoL), and swelling after sinus lift procedure. MATERIALS AND METHODS Ten healthy patients, requiring bilateral direct sinus lift surgery, were included in this prospective, randomized study. The treatment sides were randomly assigned to LLLT or control groups. The experimental side received 8 J/cm(2) of energy density, a wavelength of 1064 nm, for 60 sec, and 0.5 W laser immediately after surgery. Swelling, pain perception, and OHRQoL were evaluated at different time intervals. The data were analyzed by the one way ANOVA. RESULTS Evaluations of postoperative pain, OHRQoL, and swelling were made. We observed that the swelling and the OHRQoL in the Nd:YAG group were significantly improved when compared with the control group on the 3rd day after surgery (p<0.05). The pain levels after surgery was almost the same for both groups, without statistically significant differences (p>0.05). There were no statistically significant differences between groups with regard to any of the parameters evaluated on the 7th day. CONCLUSIONS The results demonstrate that the 1064 nm Nd:YAG laser was effective in improving OHRQoL and reducing swelling after sinus lift surgery. Within the limitations of this study, we concluded that the 1064 nm Nd:YAG laser has beneficial effects on swelling and OHRQoL, making it suitable for LLLT.
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Affiliation(s)
- Seda Ozturan
- 1 Faculty of Dentistry, Department of Periodontology, Biruni University , Istanbul, Turkey
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Pandeshwar P, Roa MD, Das R, Shastry SP, Kaul R, Srinivasreddy MB. Photobiomodulation in oral medicine: a review. ACTA ACUST UNITED AC 2015; 7:114-26. [DOI: 10.1111/jicd.12148] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Accepted: 11/22/2014] [Indexed: 12/21/2022]
Affiliation(s)
- Padma Pandeshwar
- Department of Oral Medicine and Radiology; Vydehi Institute of Dental Sciences and Research Centre; Whitefield, Bangalore India
| | - Mahesh Datta Roa
- Department of Oral Medicine and Radiology; Dayananda Sagar College of Dental Sciences; Bangalore India
| | - Reshma Das
- Department of Oral Medicine and Radiology; Vydehi Institute of Dental Sciences and Research Centre; Whitefield, Bangalore India
| | - Shilpa P. Shastry
- Department of Oral Medicine and Radiology; Vydehi Institute of Dental Sciences and Research Centre; Whitefield, Bangalore India
| | - Rachna Kaul
- Department of Oral Medicine and Radiology; Vydehi Institute of Dental Sciences and Research Centre; Whitefield, Bangalore India
| | - Mahesh B. Srinivasreddy
- Department of Oral Medicine and Radiology; Vydehi Institute of Dental Sciences and Research Centre; Whitefield, Bangalore India
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20
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Freitas ACC, Campos L, Brandão TB, Cristófaro M, Eduardo FDP, Luiz AC, Marques MM, Eduardo CDP, Simões A. Chemotherapy-induced oral mucositis: effect of LED and laser phototherapy treatment protocols. Photomed Laser Surg 2014; 32:81-7. [PMID: 24476495 DOI: 10.1089/pho.2013.3576] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND AND OBJECTIVE Over the last few decades, many studies have focused on the effect of lasers on the management of oral mucositis in oncologic patients treated with chemotherapy and/or radiotherapy. However, the effect of light-emitting diode (LED) has been poorly studied, and was not compared with that of laser phototherapy (LPT). For this reason, the aim of the present study was to clinically compare the effect of these two therapies on chemotherapy-induced oral mucositis (CIOM) and pain. METHODS Forty patients with CIOM were divided into two groups: G1, patients treated with LPT; G2, patients treated with LED. The treatment was administered during 10 consecutive days, with exception of weekends. LPT was applied using an InGaAlP laser (660 nm/40 mW/6.6 J cm-(2)/0.24 J per point/0.036 cm(2) of spot size). LED phototherapy was applied using 0.24 J per point/80 mW/630 nm/1 cm(2) of spot size. CIOM was assessed during each session in accordance to the World Health Organization (WHO) score. The patient self-assessed pain was scored on a visual analog scale (VAS). RESULTS The mean VAS and WHO scores were significantly smaller in the LED group (p<0.05). However, both groups required the same number of days to reach score zero for mucositis and pain (p>0.05). Moreover, in the group with severe mucositis (score III), there was a lower frequency of patients with complete healing and pain relief, with the exception of analgesia in G2, in which almost all patients were completely relieved from pain. CONCLUSIONS These findings suggest that LED therapy is more effective than LPT in the treatment of COIM, with the parameters used in the present study.
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Affiliation(s)
- Ana Carolina Carneiro Freitas
- 1 Departamento de Biomateriais e Biologia Oral, Faculdade de Odontologia - Universidade de São Paulo , São Paulo, SP, Brazil
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Campos L, Nicolau J, Arana-Chavez VE, Simões A. Effect of laser phototherapy on enzymatic activity of salivary glands of hamsters treated with 5-Fluorouracil. Photochem Photobiol 2013; 90:667-72. [PMID: 24172058 DOI: 10.1111/php.12195] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Accepted: 10/14/2013] [Indexed: 11/30/2022]
Abstract
The chemotherapeutic agent 5-Fluorouracil (5-FU) can induce salivary gland hypofunction (SGH); however, previous studies did not reach final conclusions on the influence of this drug on glandular tissue. Thus, the aim of this study was to investigate the effect of 5-FU on submandibular (SMs) and sublingual glands (SLs), as well as, the effect of laser phototherapy (LPT) on SGH induced by 5-FU. Eighty-five hamsters were divided into three groups: control (C), chemotherapy (CT) and laser (L), and the SGH was induced by two injections of 5-FU in groups CT and L. The irradiation was performed using a diode (λ780 nm/20 mW/5 J cm(-2)/0.2 J and 10 s per point/spot size of 0.04 cm(2)) and applied daily. On the euthanasia day, SMs and SLs were removed and biochemical analyses were carried out. The lactate dehydrogenase activity was increased in group CT when compared with group C for SLs and SMs (P < 0.05). In addition, the peroxidase and catalase activities were increased and superoxide dismutase was decreased by 5-FU (P < 0.05). However, LPT appears to be a protective mechanism against oxidative stress, tending to alter the activity of these antioxidant enzymes, suggesting LPT as a promising therapy to modulate the 5-FU harmful effect.
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Affiliation(s)
- Luana Campos
- Laboratory of Oral Biology, Department of Biomaterials and Oral Biology, School of Dentistry, University of São Paulo, São Paulo, Brazil
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Sezer U, Eltas A, Üstün K, Şenyurt SZ, Erciyas K, Aras MH. Effects of Low-Level Laser Therapy as an Adjunct to Standard Therapy in Acute Pericoronitis, and its Impact on Oral Health-Related Quality of Life. Photomed Laser Surg 2012; 30:592-7. [DOI: 10.1089/pho.2012.3274] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Ufuk Sezer
- Department of Periodontology, Faculty of Dentistry, Gaziantep University, Gaziantep, Turkey
| | - Abubekir Eltas
- Department of Periodontology, Faculty of Dentistry, İnönü University, Malatya, Turkey
| | - Kemal Üstün
- Department of Periodontology, Faculty of Dentistry, Gaziantep University, Gaziantep, Turkey
| | - Süleyman Ziya Şenyurt
- Department of Periodontology, Faculty of Dentistry, Gaziantep University, Gaziantep, Turkey
| | - Kamile Erciyas
- Department of Periodontology, Faculty of Dentistry, Gaziantep University, Gaziantep, Turkey
| | - Mutan Hamdi Aras
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Gaziantep University, Gaziantep, Turkey
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Ibuki FK, Simões A, Nicolau J, Nogueira FN. Laser irradiation affects enzymatic antioxidant system of streptozotocin-induced diabetic rats. Lasers Med Sci 2012; 28:911-8. [PMID: 22869159 DOI: 10.1007/s10103-012-1173-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2012] [Accepted: 07/16/2012] [Indexed: 12/26/2022]
Abstract
The aim of the present study was to analyze the effect of low-power laser irradiation in the antioxidant enzymatic system of submandibular (SMG) and parotid (PG) salivary glands of streptozotocin-induced diabetic rats. The animals were randomly divided into six groups: three diabetic groups (D0, D5, and D20) and three non-diabetic groups (C0, C5, and C20), according to laser dose received (0, 5, and 20 J/cm(2), respectively). Areas of approximately 1 cm(2) were demarcated in the salivary glands (each parotid and both submandibular glands) and after irradiated according to Simões et.al. (Lasers Med Sci 24:202-208, 2009). A diode laser (660 nm/100 mW) was used, with laser beam spot of 0.0177 cm(2). The group treated with 5 J/cm(2) laser dose was subjected to irradiation for 1 min and 4 s (total irradiation time) and the group treated with 20 J/cm(2) laser dose was subjected to irradiation for 4 min and 16 s. Twenty-four hours after irradiation the animals were euthanized and the salivary glands were removed for biochemical analysis. The total antioxidant values (TA), the activity of superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase enzymes were determined. SOD and CAT activities, as well as TA were higher in SMG of irradiated diabetic rats. However, in SMG of non-diabetic rats, laser irradiation decreased TA values and led to an increase in the CAT activity. In addition, there was a decrease in the activity of CAT in PG of diabetic and non-diabetic animals after laser irradiation. According to the results of the present study, low-power laser irradiation can affect the enzymatic antioxidant system of salivary glands of streptozotocin-induced diabetic rats.
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Affiliation(s)
- Flavia Kazue Ibuki
- Departamento de Biomateriais e Biologia Oral, Faculdade de Odontologia, Universidade de São Paulo (USP), São Paulo, Brazil, 05508-000
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24
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Lončar B, Mravak Stipetić M, Baričević M, Risović D. The Effect of Low-Level Laser Therapy on Salivary Glands in Patients with Xerostomia. Photomed Laser Surg 2011; 29:171-5. [DOI: 10.1089/pho.2010.2792] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Affiliation(s)
- Božana Lončar
- Department of Oral Medicine, School of Dental Medicine, University of Zagreb, Croatia
| | | | - Marinka Baričević
- Department of Oral Medicine, School of Dental Medicine, University of Zagreb, Croatia
| | - Dubravko Risović
- Molecular Physics Laboratory, Institute Rudjer Bošković, Zagreb, Croatia
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Simões A, de Freitas PM, Bello-Silva MS, Tunér J, de Paula Eduardo C. Laser phototherapy for Stevens-Johnson syndrome: a case report. Photomed Laser Surg 2010; 29:67-9. [PMID: 20973736 DOI: 10.1089/pho.2009.2671] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND AND OBJECTIVE Stevens-Johnson syndrome (SJS) is a life-threatening dermatosis characterized by epidermal sloughing and stomatitis. We report the case of a 7-year-old boy in whom laser phototherapy (LPT) was highly effective in reversing the effects of an initial episode of SJS that had apparently developed in association with treatment with phenobarbital for a seizure disorder. The patient was first seen in the intensive care unit (ICU) of our institution with fever, cutaneous lesions on his extremities, trunk, face, and neck; mucosal involvement of his genitalia and eyes (conjunctivitis); ulcerative intraoral lesions; and swollen, crusted, and bleeding lips. He reported severe pain at the sites of his intraoral and skin lesions and was unable to eat, speak, swallow, or open his mouth. MATERIALS AND METHODS Trying to prevent and minimize secondary infections, gastric problems, pain, and other complications, the patient was given clindamycin, ranitidine, dipyrone, diphenhydramine (Benadryl) drops, and morphine. In addition, he was instructed to use bicarbonate solution and Ketoconazole (Xylogel) in the oral cavity. Because of the lack of progress of the patient, the LPT was selected. RESULTS At 5 days after the initial session of LPT, the patient was able to eat gelatin, and on the following day, the number and severity of his intraoral lesions and his labial crusting and swelling had diminished. By 6 days after his initial session of LPT, most of the patient's intraoral lesions had disappeared, and the few that remained were painless; the patient was able to eat solid food by himself and was removed from the ICU. Ten sessions of LPT were conducted in the hospital. The patient underwent three further and consecutive sessions at the School of Dentistry, when complete healing of his oral lesions was observed. CONCLUSION The outcome in this case suggests that LPT may be a new adjuvant modality for SJS complications.
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Affiliation(s)
- Alyne Simões
- Centro de Pesquisa em Biologia Oral, Departamento de Materiais Dentários, Faculdade de Odontologia, Universidade de São Paulo, São Paulo, Brazil.
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Simões A, de Campos L, de Souza DN, de Matos JA, Freitas PM, Nicolau J. Laser Phototherapy as Topical Prophylaxis Against Radiation-Induced Xerostomia. Photomed Laser Surg 2010; 28:357-63. [DOI: 10.1089/pho.2009.2486] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Alyne Simões
- Department of Dental Materials, Division of Oral Biology, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Luana de Campos
- Department of Dental Materials, Division of Oral Biology, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Douglas Nesadal de Souza
- Department of Dental Materials, Division of Oral Biology, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Jonas Alencar de Matos
- Department of Dental Materials, Division of Oral Biology, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Patricia Moreira Freitas
- Department of Restorative Dentistry, Special Laboratory of Lasers in Dentistry, Faculdade de Odontologia, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Jose Nicolau
- Department of Dental Materials, Division of Oral Biology, Universidade de São Paulo, São Paulo, SP, Brazil
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