Salivary Profile in Oral Submucous Fibrosis: A Scoping Review.

Diagnosing oral submucous fibrosis (OSMF) is invariably challenging. The disease can be detected after reaching its final stage and requires complex treatment. Changes in its salivary profile can be used as a reference to see this disorder and as a basis for diagnostic prediction. This study is aimed to analyze the salivary profile as a diagnosis marker in patients with OSMF. The study using Preferred Reporting Items for Systematic Reviews and Meta-analyses was conducted using PubMed, Science Direct, and Scopus databases. A thorough literature search between 1991 and 2023 was performed. Twenty-eight full-text articles were reviewed in detail. Twenty-eight articles were included; a total of 929 patients of OSMF and 826 controls were found. The scoping review showed that levels of salivary protein (including lactate hydrogenase, immunoglobulin G, immunoglobulin A, S1007A protein, 8-hydroxydeoxyguanosine, 8-isoprostane, malondialdehyde, matrix metalloproteinase-12, salivary C-reactive protein, fibrinogen producing factor, salivary miRNA-21, and salivary lipids [cholesterol, high-density lipoprotein, triglyceride) were higher in OSMF. Meanwhile, trace elements (vitamin C, vitamin E, iron, zinc, and magnesium) were lower; only copper was higher in OSMF patients. Alteration in salivary components such as protein, lipid, and trace elements detection can be a basis for providing a noninvasive supportive examination and thus be used as a diagnosis marker of OSMF.

Dentists' knowledge and attitudes regarding PFPT: A single study in East Java, Indonesia.

Objective: Pigmented fungiform papillae of the tongue (PFPT) are infrequently encountered and inadequately documented pigmented lesions that pose challenges in diagnosis and subsequent treatment planning. The study was aimed at analyzing dentists' knowledge and attitudes regarding PFPT morphologies, to determine diagnosis and subsequent treatment planning. Methods: A cross-sectional study was conducted among dentists in East Java through an online questionnaire. Four clinical photographs of PFPT were presented, accompanied by seven questions assessing dentists' knowledge of PFPT, including lesion types, tongue structure involvement, Holzwanger classification, lesion patterns, suspected diagnoses and the nature of the lesion (benign or malignant). Additional questions to evaluate attitudes included prior experience with PFPT in practice, potential malignant transformation, diagnostic investigation and required treatment. Knowledge-associated attitude differences were statistically analyzed with the Mann-Whitney test with a threshold of p < 0.05. Result: A total of 117 dentists participated, most of whom were women (69.23%) and were 26-30 years of age (44.44%). Dentists 41-50 years of age had superior knowledge to those 20-30 years of age (p = 0.005). Practitioners with 1-5 years of experience showed significant differences in knowledge regarding PFPT (p < 0.05). No significant differences in knowledge level and attitudes were observed, particularly regarding PFPT treatment and supporting investigation (p > 0.05). However, prior encounters with PFPT cases were significantly associated with treatment decisions and supporting investigations for diagnosis (p < 0.05). Conclusion: Most participating dentists had substantial knowledge of PFPT cases. Dentists' understanding, as reflected in their attitudes toward investigating and treating PFPT, was notably influenced by prior encounters with PFPT cases.

Effectiveness of low-level laser therapy in reducing pain score and healing time of recurrent aphthous stomatitis: a systematic review and meta-analysis.

BACKGROUND: Recurrent aphthous stomatitis (RAS) is a common chronic inflammatory oral disease that negatively impacts the quality of life. Current therapies aim to reduce pain and healing process yet challenges such as rapid loss due to salivary flushing in topical drugs and adverse effects due to prolonged use of systemic medications require further notice. Low-level laser therapy is reported with immediate pain relief and faster healing thus preserving the potential for optimal treatment modalities. This review critically analyses and summarizes the effectiveness of LLLT in reducing pain scores and healing time of RAS. METHODS: A systematic search was conducted in ScienceDirect, PubMed, and Scopus using keywords of low-level laser therapy, photo-biomodulation therapy, and recurrent aphthous stomatitis. RCTs between 1967 to June 2022, presenting characteristics of the laser and reporting pain score and/or healing time of RAS after irradiation were included. Animal studies and recurrent aphthous ulcers with a history of systemic conditions were excluded. Studies were critically appraised using the RoB 2 tool. A meta-analysis was performed using inverse variance random effects. RESULTS: Fourteen trials with a total of 664 patients were included. Reduced pain was reported in 13 studies, while shortened healing time was presented in 4. The pooling of two studies after CO2 irradiation demonstrated faster healing time compared to placebo (MD - 3.72; 95% CI - 4.18, - 3.25). CONCLUSION: Pain score and healing time of RAS were reduced after irradiation with LLLT. RoB resulted in "some concerns" urging well-designed RCTs with larger samples to further assess each laser application for comparison. SYSTEMATIC REVIEW REGISTRATION: PROSPERO CRD42022355737.

BDNF and Krox20 as Indicators of Platelet-rich Plasma-Induced Nerve Regeneration in a Neuropathic Orofacial Pain Model.

OBJECTIVE: Various growth factors contained in PRP can increase angiogenesis and cell proliferation, which plays an essential role in the process of neuroregeneration and peripheral nerve injury recovery. This study analyzed PRP effects in the neuro-regeneration of axonotmesis through brain-derived neurotrophic factor (BDNF) and Krox20 expressions. MATERIALS AND METHODS: Freeze-dried allogeneic platelet-rich plasma (PRP) were prepared from allogeneic sources. Forty-two Rattus norvegicus were divided into three groups: negative control group, positive control group (crushing infraorbital nerve) and treatment group (crushing infraorbital nerve without PRP injection). Each group was observed for fourteen and twenty-one days after injury. Infraorbital nerve tissue is isolated for indirect immunohistochemistry examination with BDNF and Krox20 antibodies. Data analysis was performed using One-Way ANOVA and Mann-Whitney tests with significant value as p < 0.05. RESULTS: The PRP group showed BDNF expression significantly higher than control positive groups, both observation days (p = 0.00). A higher Korx20 expression showed by the PRP group after 21 days than in the control positive groups (p = 0.002). CONCLUSION: PRP can potentially improve neuroregeneration of axonotmesis through increased BDNF and Krox20 expression on the twenty-one days after injury.

An In-Vivo Study of Effects of Platelet-Rich Plasma on Transforming Growth Factor-ß1 and Matrix Metalloprotein 9 Expression in Traumatic Ulcers with Diabetes Mellitus.

OBJECTIVE: Diabetes mellitus is not only characterized by alterations in the wound healing process but also during oral ulcer healing. The platelet-rich plasma (PRP) can be used to stimulate the healing process. This study was performed to analyze the effect of PRP on traumatic ulcers with diabetes mellitus in an animal model by analyzing the expression of transforming growth factor ß1 (TGF-ß1) and matrix metalloprotein 9 (MMP-9). MATERIALS AND METHODS: The diabetes mellitus model was developed using streptozotocin that was administrated to Rattus novergicus. The traumatic ulcer model was obtained by placing a heated tip of a ball burnisher for 5 seconds on the lower mucosa labial. Then, the traumatic ulcer was treated with PRP for 3, 5, and 7 days. The expression of TGF-ß1 and MMP-9 was analyzed with indirect immunohistochemistry, and differences between each marker were analyzed with statistical analysis. RESULTS: All animals showed clinical oral ulceration as a yellow base during the experiment. The application of PRP showed a higher level of TGF-ß1 expression than the controls for 3, 5, and 7 days (p < 0.05). In contrast, the MMP-9 expression was lower than the control for 5 and 7 days (p < 0.05). CONCLUSION: The PRP affected traumatic ulcers with diabetes mellitus by promoting healing through TGF-ß1 expression and suppressing the MMP-9 expression. This material can serve to develop a promising topical therapy for traumatic ulcers, especially with an underlying disease such as diabetes mellitus.

Oral hyperpigmentation as an adverse effect of highly active antiretroviral therapy in HIV patients: A systematic review and pooled prevalence.

Background: Human Immunodeficiency Virus (HIV) infects patients via CD4+ cells which are later be destroyed subsequently causing the deteriotation of immune system. HIV generally manifests in the oral cavity as the first indicating sign and a marker of disease progression. HAART medications are used to reduce the incidence of oral manifestations, however it can also generate adverse effects in the oral cavity including oral hyperpigmentation. This review aimed to estimate the prevalence of oral hyperpigmentation which affect individual quality of life as a side effect of HAART. Material and Methods: This systematic review applied Preferred Reporting Items for Systematic Review and Meta-Analyses (PRISMA) 2020. Literature search was performed in ScienceDirect, PubMed, and Scopus by combining terms such as highly active antiretroviral therapy, oral manifestation, epidemiology or prevalence published between January 1998 to March 2022. Results: Of 108 articles, eleven articles were included for systematic review and meta-analysis. The pooled prevalence of oral hyperpigmentation in HAART patients was 25% (95% CI: 11%, 38%; I2: 99%). Subgroup analysis based on geographical location showed varied result may be due to the type and duration of HAART used in study population. The most widely used type of ARV was from the NRTI group (n=7) and the study with the shortest duration showed the lowest oral hyperpigmentation prevalence (n=7). Conclusions: There is an increased prevalence of oral hyperpigmentation by the use of HAART. Future study should investigate the correlation between HAART duration and the degree of oral hyperpigmentation. Key words:HAART, oral hyperpigmentation; pooled prevalence.

The effectiveness of essential oil from Citrus limon peel on Candida albicans biofilm formation: An experimental in vivo study.

Objectives: Candida albicans is resistant to commercial antifungal agents. Therefore, it is desirable to use material derived from natural sources as an antifungal agent. Essential oil from Citrus limon peel is able to inhibit the growth of C. albicans in vitro. The purpose of this study was to determine the most effective concentration of essential oil from C. limon peel with regards to the inhibition of C. albicans cyto-morphometric changes and biofilm formation in vivo. Methods: Male Wistar rats weighing 200-300 g were inoculated with C. albicans for 48 h and then given a single dose of oral methylprednisolone as an immunosuppressant. Essential oil from C. limon peel, in a gel form and at three different concentrations (0.39%, 0.78% and 1.56%), was applied twice a day for 2 days. The rats were killed after 48 h and then palatal mucosa tissues were prepared and examined with a scanning electron microscope (SEM) with regards to C. albicans, cyto-morphometric changes and biofilm formation. Results: Essential oil from C. limon peel at a concentration of 1.56% showed the strongest ability to inhibit C. albicans growth when compared to 0.78% and 0.39%. At a concentration of 1.56%, essential oil from C. limon peel disrupted cyto-morphometric changes; cells that were neither in intact nor colonised were evident, the filaments around the cells were smooth, the layer of biofilm had disappeared and there was no evidence of hyphae formation. Conclusion: The effect of essential oil from C. limon peel on cyto-morphometric changes and biofilm formation was concentration-dependent. Essential oil from C. limon peel at a dose of 1.56% showed the strongest ability to inhibit cyto-morphometric changes and biofilm formation. These findings demonstrate that essential oil of C. limon peel is a potential antifungal candidate for the treatment of candidiasis.

Malondialdehyde Level and Tissue Apoptosis Count as an Early-Detection Marker of Oral Potentially Malignant Disorders.

OBJECTIVES: The malondialdehyde (MDA) level and TA count represent the progression of oral potentially malignant disorders (OPMD) to malignancy and thus may be used as an indicator of oral epithelial dysplasia (OED). This study aimed to determine the MDA level and tissue apoptosis (TA) count in oropharyngeal tissue of Wistar rats exposed to sidestream cigarette smoke. MATERIALS AND METHODS: Wistar rats were divided into three groups: T4 group (4-week cigarette smoke exposure), T8 group (8-week cigarette smoke exposure), and control group, which was not exposed to cigarette smoke. The oropharyngeal tissue of the rats from each group was examined histopathologically to count the number of apoptotic cells, and then the blood serum was made to measure the MDA level. STATISTICAL ANALYSIS: Bonferroni test was performed to see the differences in each group for MDA level. While the data from tissue apoptosis were analyzed using Mann-Whitney U test for the significance. All data were considered significant if p < 0.05. RESULTS: The MDA level and TA count increased as the duration of cigarette smoke exposure increased. In the T8 group, the MDA level and TA count were significantly higher compared with the T4 and control groups with a p-value < 0.05. CONCLUSIONS: Exposure to sidestream cigarette smoke increased the TA count and MDA level in the oropharyngeal tissue of Wistar rats. The TA count and MDA level may be used as markers of OPMD.

Knowledge of Xerostomia and Angular Cheilitis in Geriatric Population among Clinical Dental Students: An Institutional Cross-Sectional Study.

Aim: Assessing the knowledge of clinical dental students regarding prevalent geriatric oral diseases is crucial in evaluating their clinical competency. This study focuses on analyzing dental students' knowledge of angular cheilitis (AC) and xerostomia in elderly patients. Materials and Methods: In this analytical cross-sectional investigation, clinical dental students from Universitas Airlangga were involved. We employed simple random sampling to select a minimum of 76 students and gathered data, including demographic information and knowledge about AC and xerostomia, through an online questionnaire. Respondents were then categorized into three groups based on their knowledge level: poor, moderate, and good. We utilized coefficient contingency and odds ratio analysis to explore relationships and effects between demographic factors and knowledge levels. Results: The study findings indicated that a significant majority of respondents demonstrated a high level of comprehension regarding AC (58.4%). Conversely, a notable proportion of respondents exhibited limited knowledge regarding xerostomia (66.3%). Furthermore, our correlation analysis, which aimed to identify potential associations between knowledge levels and intrinsic factors such as gender, clinical interest, and proximity to geriatric individuals, did not reveal any statistically significant relationships (P > 0.05). Conclusion: Within the population of clinical dental students, there is a commendable level of knowledge concerning AC in the geriatric demographic. However, a substantial segment of students lacks adequate understanding when it comes to xerostomia.

Prevalence of Oral Normal Variance in Healthy Elderly Patients: A Descriptive Study on Oral Pseudo-Lesions

Abstract Introduction The aging process in the elderly can change the condition of the oral cavity, regarding both clinical appearance and function. The oral mucosa becomes more susceptible to mechanical damage and irritant agents. Any changes in the oral mucosa, including normal variance, should be examined. This is especially true for the elderly, to improve oral health and prevent any abnormalities. Objective To describe the prevalence of oral normal variance in healthy elderly patients. Methods An observational descriptive study with a cross-sectional design with total sampling conducted from March to April 2020. Results Among the 117 elderly patients who participated in this study, 58 were described as healthy without any comorbidities. From those subjects, there were 117 cases of normal variance in the oral mucosa. The three most prevalent issues were fissured tongue (93.1%), coated tongue (58.62%), and crenated tongue (27.59%). Conclusion Fissured tongue is a normal variance of the oral mucosa that is commonly found in healthy elderly patients.

Prevalence of Oral Normal Variance in Healthy Elderly Patients: A Descriptive Study on Oral Pseudo-Lesions.

Introduction The aging process in the elderly can change the condition of the oral cavity, regarding both clinical appearance and function. The oral mucosa becomes more susceptible to mechanical damage and irritant agents. Any changes in the oral mucosa, including normal variance, should be examined. This is especially true for the elderly, to improve oral health and prevent any abnormalities. Objective To describe the prevalence of oral normal variance in healthy elderly patients. Methods An observational descriptive study with a cross-sectional design with total sampling conducted from March to April 2020. Results Among the 117 elderly patients who participated in this study, 58 were described as healthy without any comorbidities. From those subjects, there were 117 cases of normal variance in the oral mucosa. The three most prevalent issues were fissured tongue (93.1%), coated tongue (58.62%), and crenated tongue (27.59%). Conclusion Fissured tongue is a normal variance of the oral mucosa that is commonly found in healthy elderly patients.

Nerve growth factor and S100B: Molecular marker of neuroregeneration after injection of freeze-Dried platelet rich plasma.

Introduction: Chronic orofacial pain is associated with nerve tissues damage. Pharmacological therapy has limited therapeutic results because it is generally only symptomatic treatment. Neuroregeneration is a process which is needed to repair damaged of nerve tissue through healing or regrowth of nerve tissue. The survival of nerve cells need neurotrophic factors including Nerve Growth Factor (NGF) and S100B. High platelet concentrations in Platelet Rich Plasma contain of many trophic factors which play an important role in peripheral nerve regeneration following nerve injury. The aim of the present study is to analyze the increased expression of NGF and S100B following injection of Freeze-Dried Platelet Rich Plasma (FD-PRP) on axonotmesis injury. Methods: Fifty-four male wistar rats aged 3 months randomly divided into 3 groups; negative control group (without nerve injury and without FD-PRP injection), positive control group (nerve injury but without FD-PRP injection) and treatment group (nerve injury and FD-PRP injection). Axonotmesis nerve injury created by clamping the infraorbital nerve for 15 s. Application of FD-PRP by injection technique. Examination of NGF and S100B expression was obtained by immunohistochemistry examination with monoclonal antibodies (anti-NGF and anti-S100B). Samples were taken on the 14th day and 21st day. Results: Treatment group showed significant increase on both NGF and S100B compare to positive control (p = 0,000 and p = 0,000, respectively). Conclusion: FD-PRP injection is effective in inducing neuroregeneration by increasing NGF and S100B expression.

Oral squamous cell carcinoma with essential thrombocythemia and positive JAK2 (V617F) mutation.

Essential thrombocythemia is a condition caused by a high platelet count and a positive JAK2 (V617F) mutation. There is an increasing occurrence of malignancy, such as oral squamous cell carcinoma (OSCC), in patients with essential thrombocythemia. The objective of this case report is to document the novel instance of a patient with OSCC after being diagnosed with essential thrombocythemia and a positive JAK2 (V617F) mutation. The patient was a 42-year-old female who complained of an ulcer and pain in the dextral lateral tongue for three months. After two weeks, the pain diminished; however, there was swelling and tenderness on the ulcer. The patient was diagnosed with essential thrombocythemia and a positive JAK2 (V617F) mutation and began undergoing hydroxyurea therapy three months prior to the OSCC diagnosis. The diagnosis of OSCC was based on exfoliative cytology and MRI. The patient was treated with an antiseptic mouthwash to prevent secondary infection and referred to an oncologist to manage the OSCC. It is possible to use the suspected markers of thrombocytosis and a positive JAK2 (V617F) mutation to define the OSCC diagnosis.

The Response of the Tongue Epithelial on Cigarette Smoke Exposure as a Risk Factor for Oral Cancer Development.

OBJECTIVE: The aim of this study is to analyze the tongue epithelial response to cigarette smoke exposure on a number of macrophages, lymphocytes, plasma cells, and matrix metalloproteinase 9 (MMP-9) expression to determine the risk factor of oral cancer development. MATERIALS AND METHODS: Thirty Rattus norvegicus will be exposed to two kinds of cigarette smoke by a smoking pump for 4 and 8 weeks. The tongues were collected to analyze the number of macrophages, lymphocytes, and plasma cells with hematoxylin-eosin. The MMP-9 expression was similarly analyzed with immunohistochemical staining and then compared with the control group. RESULTS: The number of macrophages, lymphocytes, and MMP-9 expression was higher in the 8-week cigarette smoke exposure compared to the 4-week cigarette smoke exposure and the control group (p < 0.000). The number of plasma cell did not differ in the 8-week cigarette smoke exposure from that of the control group (p > 0.05). The number of plasma cells in the tongue tissue during the 4-week cigarette smoke exposure was not determined. CONCLUSION: Cigarette smoke exposure induces the risk of oral cancer development as a result of an increase in the number of macrophages, lymphocytes, and MMP-9 expression in the tongue epithelial.

Neuropathy complication of antiretroviral therapy in HIV/AIDS patients.

OBJECTIVES: Significant pain from HIV-associated sensory neuropathy (HIV-SN) affects 40% of HIV-infected individuals treated with antiretroviral therapy (ART). The most salient symptom of the neuropathy is pain, which frequently is moderate-to-severe intensity, associated with reduced activities and physical function, sleep disruption, increased severity of depression, and anxiety. Yet, evidence for managing painful HIV-SN is poor. The purpose of this study was to verify by scientific evidence the neuropathy complication in HIV/AIDS patients to develop effective pain management strategies. METHODS: Design: Systematic review. DATA SOURCES: PubMed (MEDLINE), Cochrane, www.controlled-trials.com. SELECTION CRITERIA: the filter "English" was used, timeframed searched was 2009-2019, randomized controlled trials (RCT). Keywords were verified in MeSH "Peripheral Nervous System Disease" and "Antiretroviral Agents" or "Antiretroviral therapy." REVIEW METHOD: the PRISMA flowchart was used. RESULT: A systematic search following PRISMA guidelines was carried out, and 12 specific articles/studies on the subject were selected. The results revealed that HIV therapy, aging, body mass index, height, and systemic conditions influence neuropathy conditions in HIV/AIDS patients. The multistudies focused on pain management approaches such as administration of pain medication, drug combination to prevent side effects, or ART with minimal side effects. CONCLUSION: Sensory neuropathy is a frequent complication of HIV infection and ART. An understanding of the mechanism and pathophysiology of neuropathy in HIV is urgently required to develop alternative treatment modalities and to evaluate preventive strategies.

Oral Candidiasis in Immunosuppressed Wistar Rats (Rattus norvegicus) Post Dexamethasone Injection at 7. 2 mg/kg and 16 mg/kg Doses / Candidíase oral em ratos Wistar imunossuprimidos (Rattus norvegicus) pós-injeção de dexametasona com doses de 7, 2 mg / kg e 16 mg / kg

Objective: Oral candidiasis is an infection that occurs in the oral cavity and is caused by candida species, often Candida albicans. This infection commonly occurs in a condition of immunosuppression caused by dexamethasone. Due to the side effects of antifungal therapy, developing a standardized immunosuppressed animal model to induce oral candidiasis for new therapies is required. The aim of this study is to observe oral candidiasis in immunosuppressed Wistar rats post dexamethasone injection at 7.2 mg/kg and 16 mg/kg doses. Material and Methods: Twenty-one Wistar rats were divided into three groups: control group, treatment group 1 (injected with dexamethasone at a concentration of 7.2 mg/kg), and treatment group 2 (at a concentration of 16 mg/kg) for five days. Immunosuppression status was observed by leukocyte count and all the subjects' palates were inoculated with C. albicans 0.1 ml of 15x108 UFC/ml 24 hours later. The subjects' tongues were observed and confirmed by laboratory examination on day 10. A statistical analysis was performed using one way ANOVA, Kruskal­Wallis, Tukey HSD, and Mann-Whitney U tests. Results: A significant clinical appearance of the subjects' tongues was observed only between C and T1 (p=0.023; p<0.05). Significant hyphal formation was observed between C and T1 (p= 0.037; p<0.05) and between C and T2 (p=0.007; p<0.05), and no significant difference was observed between T1 and T2. A significant increase in the colony count was also observed in similar results. Conclusion: Dexamethasone injection at doses of 7.2 mg/kg and 16 mg/kg is effective in triggering immunosuppression to induce oral candidiasis in immunosuppressed Wistar rats. (AU)

Candidíase oral é uma infecção que ocorre na cavidade oral e é causada por espécies de Candida, freqüentemente Candida albicans. Esta infecção geralmente ocorre em uma condição de imunossupressão causada por dexametasona. Devido aos efeitos colaterais de terapia antifúngica, o desenvolvimento de um padrão de modelo animal imunossuprimido para induzir candidíase oral para testar novas terapias se faz necessário. O objetivo deste estudo é observar candidíase oral em ratos Wistar imunossuprimidos pós-injeção de dexametasona utilizando doses de 7,2 mg /kg e 16 mg / kg. Material e métodos: Vinte e um ratos Wistar foram divididos em três grupos: grupo controle, tratamento grupo 1 (injetado com dexametasona na concentração de 7,2 mg / kg), e tratamento grupo 2 (concentração de 16 mg / kg) por cinco dias. A imunossupressão foi observada pela contagem de leucócitos e todos os palatos dos animais foram inoculados com C. albicans 0,1 ml de 15x108 UFC / ml após 24horas. As línguas dos animais foram observadas e confirmadas por exame laboratorial após 10 dias. A análise estatística foi realizada usando os testes de ANOVA um fator, kruskal ­ Wallis, Tukey HSD e de Mann-Whitney. Resultados: Significante diferença na aparência clínica da língua dos animais foi observada apenas entre C e T1 (p = 0,023; p <0,05). Significativa diferença na formação de hifas foi observada entre C e T1(p = 0,037; p <0,05) e entre C e T2 (p = 0,007; p <0,05), e nenhuma diferença significativa foi observada entre T1 e T2. Um aumento significativo na contagem de colônias foi também observado com resultados semelhantes. Conclusão: Injeção de dexametasona utilizando doses de 7,2 mg / kg e 16 mg / kg é eficaz no desencadeamento da imunossupressão para induzir candidíase oral em ratos Wistar imunossuprimidos. (AU)

Effects of topical application of propolis extract on fibroblast growth factor-2 and fibroblast expression in the traumatic ulcers of diabetic Rattus norvegicus.

BACKGROUND: A traumatic ulcer caused by diabetes mellitus (DM) is a lesion caused by an increase in advanced glycosylation end products (AGEs), which takes a long time to heal. AGEs cause angiogenesis, vasculogenesis and a decrease in leukocytes. Fibroblast proliferation and the number of glycosaminoglycans decline, thereby inhibiting the formation of granulation tissue, collagen deposition and platelet derivatives growth factor. The application of topical propolis extract gel to ulcers has an anti-inflammatory function, triggers angiogenesis and accelerates wound healing. AIMS: This study sought to establish whether the topical application of propolis extract gel can increase the expression of fibroblast growth factor-2 (FGF-2) and fibroblasts in the healing process of traumatic ulceration in diabetic Wistar rats (Rattus norvegicus). METHODS: This was a genuinely experimental research design featuring posttest-only control groups. The simple random sampling technique involved 24 male DM Wistar rats with traumatic ulcers on the labial mucosa of the lower lip. The samples were divided into two groups: a control group whose members were administered hydroxypropyl methylcellulose gel 5% and a treatment group to which propolis extract gel was applied. The expression of FGF-2 and fibroblasts was observed on days 3, 5, 7 and 9 by means of histology and immunohistochemistry (hypothalamic-pituitary-adrenal) with Ab-Mo FGF-2. RESULTS: The topical application of propolis extract gel increased the expression of FGF-2 and fibroblasts in the treatment group on days 5 and 7. There was a correlation between the increased expression of FGF-2 and the number of fibroblasts (P < 0.05). CONCLUSION: The topical application of propolis extract gel increases the expression of FGF-2 and fibroblasts within the traumatic ulcer healing process in diabetic R. norvegicus.