RÉSUMÉ
Systemic sclerosis (SSC) is a rare, systemic autoimmune disease of unknown etiology, which is characterized by fibrosis of visceral organs, skin and blood vessels. This disorder can be localized or systemic. It is more common in women with estimated prevalence is 250 cases in a million. Oral manifestations include xerostomia, periodontitis, decayed tooth etc. Radiographically generalized loss of bone with resorption of the mandibular angle and coronoid process can be evident in patients with scleroderma. Pressure of fibrous mucocutaneous tissues is thought to be the cause of the resorption. Decreased number of wrinkles due to sclerosis and distinct facial features because of the atrophy of ala nasi are among common clinical characteristics of this condition. The aim of this case series is to present two female patients with scleroderma who presented with signs of oral manifestations along with resorption at the angle of mandible, as well as widening of the periodontal space.
RÉSUMÉ
Present study evaluates the chemopreventive actions of tamoxifen (10 mg/kg), retinyl acetate (50 mg/kg), tocopherol (200 mg/kg), aminoglutethimide (1 mg/kg), ergocryptine (5 mg/kg), and sodium selenite (1 mg/kg) when given singly/in combinations on the initiation of mammary carcinogenesis induced by 20 mg of DMBA in virgin female rats. DMBA was given when rats were 50 days old and the modulators were given in diet 10 days before and 10 days after carcinogen treatment and experiments were terminated 6 months later. DMBA alone yielded tumors in 62% rats. When modulators were given singly and in combinations of two, tumor incidences were not altered significantly. The range of tumor incidences was between 30% and 13% when the agents were given in combinations of 3, 4 and 5. Finally when all 6 modulators were given together the tumor incidence dropped down to 8.3%.