in 1996 grinspan et al presented the association between primary hypertension and diabetes mellitus as grinspan syndrome. through various studies, researchers have noticed that epidermal lichen planus cells show enzymatic disorders as well as defective carbohydrate expression. therefore, it was assumed that there is a relationship between cells and hormones in metabolic actions. besides, some r...

introduction: biosorption of heavy metals can be an effective process for the removal of heavy metal ions from aqueous solutions. also, living lichens are known to accumulate metals across their surface. materials and methods: in this study, the biosorption of cadmium ions cd (ii) by the lichens acarospora strigata, lecanora muralis and caloplaca aurantia was investigated in aqueous solution in...

The aetiology of oral lichen lesions is obscure. In this study the frequency of contact allergy to gold in 83 patients with oral lichen lesions was compared with that in two control groups, comprising 319 age- and gender-matched patients with dermatitis selected from files and 83 clinically examined dermatitis patients. All patients were tested epicutaneously with gold sodium thiosulphate. The ...

For the purpose of this work an epiphytic lichen species, Hypogymnia physodes (L.)NyL, was used. Thalli of the lichen were treated with solutions of nitrate salts of heavy metals, including Zn(NO3)2, Cu(NO3)2, Pb(NO3)2, and Cd(NO3)2. To simulate the acid rain impact, pH of the metal mixture was lowered to pH 4, using Na2S2O5. Content of heavy metals was determined after a standard UV mineraliza...

Discrete papular lichen myxedematosus, a subtype of localized papular lichen myxedematosus, is an idiopathic cutaneous mucinosis. It typically presents symmetrically, involving the trunk and extremities. We report on an unusual case of discrete papular lichen myxedematosus with a segmental presentation. An otherwise healthy 23-year-old man presented with a gradual accumulation of asymptomatic p...

Background: Lichen planus is a chronic inflammatory disease ofunknown etiology that may involve mucocutaneous tissues. Themain aim of our study was to evaluate the frequency of oral andgenital lichen planus in men and women affected by skin lesions.Method: A total of 132 patients with clinical and histopathologicaldiagnosis of lichen planus were evaluated for oral and genitalinvolvement. All da...

Multiple sclerosis and lichen ruber planus are clinically and histologically distinct complex disorders of putative autoimmune aetiology that are fairly commonly observed in isolation but rarely found in combination. Only two previous reports have described lichen skin disorders in association with multiple sclerosis. The present report describes the case of a 51-year-old Caucasian woman exhibi...

Lichen planus (LP) is a common disorder in which auto-cytotoxic T lymphocytes trigger apoptosis of epithelial cells leading to chronic inflammation. Oral Lichen Planus (OLP) can be a source of severe morbidity and has a small potential to be malignant. The diagnosis of OLP can be made from the clinical features if they are sufficiently characterized, but biopsy is recommended to confirm the dia...

UNLABELLED Oral lichen planus is one of the most common dermatological diseases presenting in the oral cavity; the prevalence in the general population is 1% to 2%. Although relatively frequent, oral lichen planus is the target of much controversy, especially in relation to its potential for malignancy. AIM This study aimed to make clinical and histopathological considerations regarding oral ...

Lichen striatus is a self-limiting dermatosis presenting with sudden eruption of lichenoid papules along the lines of Blaschko. A 5-year-old girl presented with asymptomatic hypopigmented linear lesions over both upper limbs. The histopathological examination revealed spongiosis, vacuolar alteration of the basal layer and lymphocytic exocytosis with a mild-to-moderate perivascular mononuclear i...