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Systemic non-steroidal immunomodulators for oral lichen planus treatment-a scoping review. Clin Oral Investig 2023; 27:7091-7114. [PMID: 37921879 DOI: 10.1007/s00784-023-05357-9] [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: 01/05/2023] [Accepted: 10/19/2023] [Indexed: 11/05/2023]
Abstract
OBJECTIVE The aim of this scoping review was to evaluate the efficacy and safety of the use of systemic nonsteroidal immunomodulators (SNSI) for oral lichen planus (OLP) treatment. MATERIALS AND METHODS This review was conducted according to PRISMA-ScR guidelines and registered at PROSPERO (CRD42021243524). Consulted databases were Pubmed, Embase, Scopus, and Web of Science. The inclusion criteria was as follows: clinical trials, case series, prospective, and retrospective studies conducted with participants presenting OLP of any sex and age. RESULTS Thirty-two studies were selected, assessing 9 different SNSI: methotrexate, dapsone, levamisole, hydroxychloroquine, thalidomide, metronidazole, azathioprine, mycophenolate mofetil, and colchicine. Methotrexate and dapsone were the drugs with the best evidence among the options included, regarding number and quality of studies. Methotrexate resulted in significant improvement in the clinical condition and remission of symptoms, ranging between 63 and 93% of cases. Dapsone presented a similar effect to the use of topical corticosteroids and tacrolimus CONCLUSION: Among SNSI therapeutic options, methotrexate, and dapsone showed promising efficacy and safety. However, large-scale randomized clinical trials are still needed. CLINICAL RELEVANCE SNSI have been used in the treatment of recalcitrant OLP; however, so far, it is not clear which are the best options. This scoping review highlights the potential use of methotrexate and dapsone.
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Treatment effectiveness of levamisole plus prednisolone on oral lichen planus patients with emphasis on levamisole-induced agranulocytosis or pancytopenia. J Formos Med Assoc 2019; 118:1193-1201. [PMID: 30922614 DOI: 10.1016/j.jfma.2019.03.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2019] [Revised: 03/02/2019] [Accepted: 03/06/2019] [Indexed: 10/27/2022] Open
Abstract
BACKGROUND/PURPOSE Physicians' and dentists' knowledge of levamisole-induced agranulocytosis or pancytopenia remains incomplete. This study aimed to evaluate the treatment effectiveness of levamisole plus prednisolone on oral lichen planus (OLP) patients with emphasis on levamisole-induced hematological changes. METHODS Ninety patients with erosive OLP were given 120 mg/day new levamisole (Levazol) and 15 mg/day prednisolone for three consecutive days each week. Three cases with levamisole-induced blood-cytopenias were assessed and treated within one year. RESULTS Most patients reported significant pain relief and showed no evidence of erosive OLP after 4-8 weeks of treatment with few side effects; nevertheless, three female patients developed agranulocytosis or granulocytopenia with concomitant thrombocytopenia or pancytopenia within 2-6 weeks after levamisole (Levazol) treatment. One case with previously unknown double episodes of agranulocytosis revealed her first episode following interruption of levamisole (Decaris) treatment for 4 months. High fever and sore throat were the most common symptoms, but two agranulocytosis cases remained asymptomatic one week before diagnosis, and were treated with levamisole withdrawal and empiric antimicrobial initiation as well as utilization of granulocyte colony-stimulating factors. Neutrophil recovery took about 1 week, but over 4 weeks in one of the cases (an elderly patient) with septic shock. CONCLUSION Agranulocytosis or pancytopenia usually developed within 2 months after levamisole treatment, but it might be delayed. Agranulocytosis was more likely to occur in females and onset was acute. Levamisole is an effective immunomodulator for OLP patients; however, it should be used with caution and administered with regular blood monitoring.
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Recurrent aphthous stomatitis - Etiology, serum autoantibodies, anemia, hematinic deficiencies, and management. J Formos Med Assoc 2018; 118:1279-1289. [PMID: 30446298 DOI: 10.1016/j.jfma.2018.10.023] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 10/31/2018] [Indexed: 12/31/2022] Open
Abstract
Recurrent aphthous stomatitis (RAS) is one of the most common oral mucosal diseases characterized by recurrent and painful ulcerations on the movable or nonkeratinized oral mucosae. Clinically, three types of RAS, namely minor, major, and herpetiform types, can be identified. RAS more commonly affects labial mucosa, buccal mucosa, and tongue. Previous studies indicate that RAS is a multifactorial T cell-mediated immune-dysregulated disease. Factors that modify the immunologic responses in RAS include genetic predisposition, viral and bacterial infections, food allergies, vitamin and microelement deficiencies, systemic diseases, hormonal imbalance, mechanical injuries, and stress. Our previous study found the presence of serum gastric parietal cell antibody, thyroglobulin antibody, and thyroid microsomal antibody in 13.0%, 19.4%, and 19.7% of 355 RAS patients, respectively. We also found anemia, serum iron, vitamin B12, and folic acid deficiencies, and hyperhomocysteinemia in 20.9%, 20.1%, 4.8%, 2.6%, and 7.7% of 273 RAS patients, respectively. Therefore, it is very important to examine the complete blood count, serum autoantibody, hematinic, and homocysteine levels in RAS patients before we start to offer treatments for RAS. Because RAS is an immunologically-mediated disease, topical and systemic corticosteroid therapies are the main treatments of choice for RAS.
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Oral lichen planus - Differential diagnoses, serum autoantibodies, hematinic deficiencies, and management. J Formos Med Assoc 2018; 117:756-765. [PMID: 29472048 DOI: 10.1016/j.jfma.2018.01.021] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 01/26/2018] [Accepted: 01/30/2018] [Indexed: 01/06/2023] Open
Abstract
Oral lichen planus (OLP) is a chronic inflammatory oral mucosal disease that occurs more frequently in middle-aged and elderly female patients. Previous studies indicate that OLP is a T-cell dysfunction-induced localized autoimmune disease. Clinically, six types of OLP, namely reticular, papular, plaque-like, atrophic/erosive, ulcerative, and bullous types, can be identified. OLP more commonly affects buccal mucosa, tongue, and gingiva. It always has a bilateral and symmetric distribution of the oral lesions. Plaque-like and atrophic/erosive OLP may be misdiagnosed as oral leukoplakia and oral erythroleukoplakia, respectively. Our previous study found serum autoantibodies in 195 (60.9%) of the 320 OLP patients. Specific serum anti-nuclear, anti-smooth muscle, anti-mitochondrial, gastric parietal cell, thyroglobulin, and thyroid microsomal autoantibodies are present in 28.1%, 8.4%, 1.6%, 26.3%, 21.3%, and 24.4% of 320 OLP patients, respectively. Furthermore, we also discovered that 21.9%, 13.6%, 7.1%, 0.3%, and 14.8% of 352 OLP patients have hemoglobin, iron, vitamin B12, and folic acid deficiencies, and abnormally high serum homocysteine level, respectively. Therefore, it is very important to examine the serum autoantibody, hematinic and homocysteine levels in OLP patients before starting the treatments for OLP patients. Because OLP is an immunologically-mediated disease, corticosteroids are the drugs of choice for treatment of OLP.
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Anti-inflammatory and Immunomodulatory Effects of Antibiotics and Their Use in Dermatology. Indian J Dermatol 2016; 61:469-81. [PMID: 27688434 PMCID: PMC5029230 DOI: 10.4103/0019-5154.190105] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Antibiotics (antibacterial, antiviral, and antiparasitic) are class of drugs which result in either killing or inhibiting growth and multiplication of infectious organisms. Antibiotics are commonly prescribed by all specialties for treatment of infections. However, antibiotics have hitherto immunomodulatory and anti-inflammatory properties and can be exploited for various noninfectious dermatoses. Dermatologists routinely prescribe antibiotics in treatment of various noninfectious disorders. This study will review anti-inflammatory and immunomodulatory effects of antibiotics and their use in dermatology.
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Abstract
Recurrent aphthous stomatitis (RAS) is the most common acute oral ulcerative condition in North America. RAS is divided into a mild, common form, simple aphthosis, and a severe, less common form, complex aphthosis. Aphthosis is a reactive condition. The lesions of RAS can represent the mucosal manifestation of a variety of conditions. These include conditions with oral and genital aphthae such as ulcus vulvae acutum, reactive nonsexually related acute genital ulcers, and Behçet disease. The mouth is the beginning of the gastrointestinal (GI) tract, and the lesions of RAS can be a manifestation of GI diseases such as gluten-sensitive enteropathy, ulcerative colitis, and Crohn disease. Complex aphthosis may also have correctable causes. The clinician should seek these in a careful evaluation. Successful management of both simple and complex aphthosis depends on accurate diagnosis, proper classification, recognition of provocative factors, and the identification of associated diseases. The outlook for patients with both simple and complex aphthosis is positive.
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Oral lichenplanus: Etiology, pathogenesis, diagnosis, and management. World J Stomatol 2015; 4:12-21. [DOI: 10.5321/wjs.v4.i1.12] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2014] [Revised: 12/01/2014] [Accepted: 01/12/2015] [Indexed: 02/06/2023] Open
Abstract
Oral Lichen planus (OLP) is a common chronic mucocutaneous disorder with an immune mediated pathogenesis. Its appearance may vary from presence of keratotic to erythematous areas. Etiology of OLP is unknown, but it is thought to be the result of an autoimmune process with an unknown predisposing factor. Oral lichen planus is a complex and poorly understood clinical condition with periods of remissions and exacerbations. Management of the OLP is diversified with few lesions requiring treatment for years and few others are mild, requiring no treatment.
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Levamisole and low-dose prednisolone in the treatment of reccurent aphthous stomatitis. J Oral Pathol Med 2015; 43:309-16. [PMID: 24822268 DOI: 10.1111/jop.12126] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
CONTEXT Recurrent aphthous stomatitis (RAS) is the most common oral mucosal disease. However, the available therapies for RAS only relieve symptoms and do not provide a cure. AIMS This study assessed the response to treatment with levamisole and low-dose prednisolone drug combination in patients with RAS. METHODS AND MATERIAL Fifty RAS subjects were enrolled in the single-blind randomized placebo-controlled trial. Study medications were administered thrice daily for 3 consecutive days/week for 3 consecutive weeks. Patients in Group 1 received placebo, Group 2 received levamisole (50 mg) and Group 3 received levamisole (50 mg) and low-dose prednisolone (5 mg). Patients were followed up for 60 days after treatment. Response to treatment was assessed using the following clinical parameters: pain due to ulcers, number of ulcers/episode, size of ulcers, duration of ulcers, and frequency of ulcers (episodes/month). STATISTICAL ANALYSIS USED Mann–Whitney U-test. RESULTS A statistically significant improvement was noted in all parameters except for the size of ulcers in patients treated with levamisole alone and with combination of levamisole and low-dose prednisolone. There was no statistically significant improvement in the placebo group. Both active groups had significantly better improvement when compared to placebo group, while there was no significant difference between the two active groups. CONCLUSIONS Levamisole alone and combination of levamisole and low-dose prednisolone are effective modes of therapy for RAS.
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Anti-helminthic drugs in recurrent apthous stomatitis: A short review. J Pharm Bioallied Sci 2014; 6:65-8. [PMID: 24741272 PMCID: PMC3983748 DOI: 10.4103/0975-7406.129169] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Revised: 06/12/2013] [Accepted: 01/22/2014] [Indexed: 11/05/2022] Open
Abstract
Recurrent aphthous stomatitis (RAS) is a common mucosal condition producing painful ulcerations in the oral cavity and considerable clinical morbidity. The etiology remains obscure, though local trauma, psychologic stress, hematinic deficiencies and immune dysregulation have been implicated. Though the primary goals of therapy are symptomatic relief of pain, the clinicians are aiming toward reducing the frequency, duration, number of ulcerations and increasing ulcer free periods with systemic drug therapy if topical medications appear ineffective. Levamisole, an antihelminthic drug has been tried with promising results in patients with severe RAS providing long-term benefits.
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Greater therapeutic efficacy of prednisolone plus medicinal herbs than prednisolone or medicinal herbs alone in patients with oral lichen planus. J Dent Sci 2010. [DOI: 10.1016/j.jds.2010.11.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
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Seroprevalence of anti-HCV among patients with oral lichen planus in Southern Taiwan. ACTA ACUST UNITED AC 2010; 109:408-14. [DOI: 10.1016/j.tripleo.2009.10.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2009] [Revised: 09/25/2009] [Accepted: 10/01/2009] [Indexed: 12/28/2022]
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Levamisole monotherapy for oral lichen planus. Ann Dermatol 2009; 21:250-4. [PMID: 20523798 DOI: 10.5021/ad.2009.21.3.250] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2008] [Accepted: 12/18/2008] [Indexed: 11/08/2022] Open
Abstract
BACKGROUND Several different kinds of drugs have been used to treat chronic oral lichen planus (OLP). During the last decade, there have been several reports demonstrating success with levamisole and low dose prednisolone therapy for treating OLP. However, some OLP patients who have underlying diseases such as diabetes, hypertension and malignancy are unable to take steroids. OBJECTIVE The aim of this study was to evaluate levamisole monotherapy for treating OLP. METHODS Eleven patients who had OLP were treated with levamisole between 2005 and 2007. The levamisole was administered at a dose 50 mg thrice daily for three consecutive days, but then it was not administered on the following four days. RESULTS After 2 weeks of treatment, 8 patients reported a partial response, 3 patients reported no response and no patients reported clearance of lesion. After 4 weeks of treatment, 6 patients reported a partial response, 3 patients reported no response and 2 patients reported clearance of lesion. Furthermore, after 3 months of treatment, 3 patients reported a partial response, 3 patients reported no response and 5 patients reported complete clearance of lesion. Clinical improvement was shown in 2 weeks, whilst the mean duration to achieve clearance of lesion was 6.2 weeks. Although 1 patient had mild itching, there were no significant adverse effects. CONCLUSION Levamisole monotherapy could be a successful and safe treatment option for patients with chronic OLP and who cannot take steroids.
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Abstract
Levamisole, an anthelmintic agent with a wide range of immunomodulatory actions, has been used successfully as monotherapy and an adjunct to treatment in a variety of diseases. Since 1990, combination therapy of levamisole and fluorouracil has played an important role in the treatment of resected Dukes stage C adenocarcinoma of the colon. Because of its immunomodulating effects levamisole has been used in a wide range of diseases with and without success. In dermatologic disease levamisole has been successfully used in the treatment of parasitic, viral and bacterial infections including leprosy, collagen vascular diseases, inflammatory skin diseases and children with impaired immune a variety of reasons. It has also been used in combination with other drugs for treating a number of dermatologic disorders, e.g. in combination with cimetidine for treating recalcitrant warts, with prednisolone for treating lichen planus, erythema multiforme and aphthous ulcers of the mouth. Adverse affects of levamisole are mild and infrequent and include rash, nausea, abdominal cramps, taste alteration, alopecia, arthralgia, and a flu-like syndrome. It can rarely cause agranulocytosis. More studies need to be undertaken to study the full potential of levamisole in dermatologic diseases.
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Abstract
Part of periodontology involves the diagnosis and treatment of a variety of non-plaque-related diseases of the periodontium. The International Workshop for a Classification of Periodontal Diseases and Conditions noted that the periodontist may be called upon to manage non-plaque-related mucocutaneous disorders either alone, or as part of a treatment team consisting of physicians, dentists or other allied health care professionals. This informational paper will review the etiology, clinical manifestations, diagnosis, and treatment of the most common chronic mucocutaneous diseases, including those that may present as desquamative gingivitis or intraoral vesiculobullous lesions. This paper is intended for the use of periodontists and other members of the dental profession.
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Levamisole and Chinese medicinal herbs can modulate the serum interleukin-6 level in patients with recurrent aphthous ulcerations. J Oral Pathol Med 2003; 32:206-14. [PMID: 12653859 DOI: 10.1034/j.1600-0714.2003.00096.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
BACKGROUND Recurrent aphthous ulcerations (RAU) are common oral inflammatory lesions. Interleukin-6 (IL-6) is a pro-inflammatory cytokine that has effects on cellular and humoral immunities. Previous studies have shown that the high serum IL-6 levels in some RAU patients can be reduced by drug treatment. This finding suggests that IL-6 may be a useful marker in evaluating therapeutic effects of RAU. METHODS In this study, we used a solid phase, two-site sequential chemiluminescent immunometric assay to determine the baseline serum levels of IL-6 in a group of 228 patients with RAU, erythema multiforme (EM), traumatic ulcers (TU), oral submucous fibrosis (OSF), pemphigus vulgaris (PV), or Sjögren's syndrome (SS), and in 77 normal control subjects. Some RAU patients were treated with levamisole plus Chinese medicinal herbs or levamisole only for 0.5-5 months and their serum IL-6 levels were measured after treatment. RESULTS We found that about 99% of the normal control subjects and the patients with EM, TU, or OSF had a serum IL-6 level within the normal limit of 5.0 pg/ml. However, 24% (48/197) RAU patients, 14% (1/7) EM patients, 43% (3/7) PV patients, and 100% (6/6) SS patients had a serum level of IL-6 greater than 5.0 pg/ml. The mean serum level of IL-6 in patients with RAU (3.6 +/- 3.5 pg/ml, P < 0.001), minor type RAU (2.7 +/- 2.0 pg/ml, P < 0.05), major type RAU (5.2 +/- 4.6 pg/ml, P < 0.001), or herpetiform type RAU (4.1 +/- 3.8 pg/ml, P < 0.01) was higher than that in normal control subjects. The mean serum level of IL-6 in major type (P < 0.001) or in herpetiform type RAU patients (P < 0.05) was higher than that in minor type RAU patients. The mean reduction of serum IL-6 level (10.0 +/- 7.1 pg/ml) in RAU patients after treatment with levamisole plus Chinese medicinal herbs was significantly higher than that (5.1 +/- 3.7 pg/ml) in RAU patients after treatment with levamisole only (P < 0.005), suggesting that the combination therapy is superior to the single therapy of levamisole only. CONCLUSION We conclude that levamisole and levamisole plus Chinese medicinal herbs can modulate the serum IL-6 level in RAU patients. Although the therapeutic effect of RAU can be assessed by a decrease in the frequency, duration and number of the oral ulcerations, it can also be monitored by a reduction of serum IL-6 level in RAU patients.
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Abstract
Recurrent aphthous stomatitis remains a commonly occurring cause of oral pain and ulceration. Although the ulcerations of RAS are multifactorial and of unknown cause, recognition of the role of patient and environmental factors may be helpful in developing recommendations for treatment and prevention of future ulcers.
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Serum interleukin-6 level is a useful marker in evaluating therapeutic effects of levamisole and Chinese medicinal herbs on patients with oral lichen planus. J Oral Pathol Med 2002; 31:196-203. [PMID: 12076322 DOI: 10.1034/j.1600-0714.2002.310402.x] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
BACKGROUND Oral lichen planus (OLP) is a T cell-mediated inflammatory disease. Interleukin-6 (IL-6) is a pro-inflammatory cytokine that has effects on cellular and humoral immunities. Previous studies have shown that keratinocytes and tissue-infiltrating mononuclear cells from OLP lesions can secrete IL-6. In some OLP patients, the high serum IL-6 levels are reduced after treatment, suggesting that IL-6 may be a useful marker in evaluating therapeutic effects and in monitoring the disease status of OLP. METHODS In this study, we used a solid phase, two-site sequential chemiluminescent immunometric assay to determine the baseline serum levels of IL-6 in a group of 180 patients with erosive OLP (EOLP), nonerosive OLP (NEOLP), erythema multiforme (EM), traumatic ulcers (TU), oral submucous fibrosis (OSF), pemphigus vulgaris (PV), or Sjögren's syndrome (SS), and in 77 normal control subjects. Some OLP patients were treated with levamisole plus Chinese medicinal herbs or levamisole only for 0.5-5.5 months and their serum IL-6 levels were measured after treatment. RESULTS We found that approximately 99% of the normal control subjects and the patients with EM, TU, or OSF had a normal serum IL-6 level less than 5.0 pg/ml. However, 15% (22/149) OLP patients, 15% (20/136) EOLP patients, 20% (5/25) major type EOLP patients, 14% (15/111) minor type EOLP patients, 15% (2/13) NEOLP patients, 14% (1/7) EM patients, 43% (3/7) PV patients, and 100% (6/6) SS patients had a serum IL-6 level greater than 5.0 pg/ml. The mean serum IL-6 level in patients with OLP (3.4 +/- 3.1 pg/ml, P < 0.001), EOLP (3.4 +/- 3.2 pg/ml, P < 0.001), major type EOLP (4.9 +/- 3.5 pg/ml, P < 0.001), minor type EOLP (3.0 +/- 3.0 pg/ml, P < 0.01), or NEOLP (4.2 +/- 1.5 pg/ml, P < 0.001) was significantly higher than that in normal control subjects (2.0 +/- 1.5 pg/ml). A significant difference in the mean serum IL-6 level was also found between major type and minor type EOLP patients (P < 0.01). The mean reduction of serum IL-6 level in OLP patients treated with levamisole plus Chinese medicinal herbs was significantly higher (7.4 +/- 4.7 pg/ml) than that in OLP patients treated with levamisole only (3.8 +/- 2.3 pg/ml, P < 0.05), suggesting that the combination therapy was superior to levamisole only. CONCLUSION We conclude that levamisole and levamisole plus Chinese medicinal herbs can modulate the serum IL-6 level in OLP patients. IL-6 may be a useful marker in evaluating therapeutic effects and in monitoring the disease status of OLP.
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Abstract
Lichen planus is a relatively common disorder of the stratified squamous epithelia. Most dental and medical practitioners see patients with lichen planus, but not all are recognized as having the disease. Patients with lichen planus may have concomitant involvement of the disease in multiple sites. Oral lichen planus lesions usually have a distinctive clinical morphology and characteristic distribution, but oral lichen planus may also present a confusing array of patterns and forms, and other disorders may clinically mimic oral lichen planus. The etiopathogenesis of lichen planus appears to be complex, with interactions between genetic, environmental, and lifestyle factors. Much has now been clarified about the etiopathogenic mechanisms involved and interesting new associations, such as with liver disease, have emerged. The management of lichen planus is still not totally satisfactory in all cases and there is as yet no definitive treatment that results in long term remission, but there have been advances in the control of the condition. Amongst the many treatments available, high potency topical corticosteroids remain the most reliably effective, though topical cyclosporine, topical tacrolimus, or systemic corticosteroids may be indicated in patients whose condition is unresponsive to topical corticosteroids.
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