Lichens are known to be bioaccumulators of atmospheric pollutants and are abundant in the Canadian arctic. Mining in this region may negatively impact the tundra communities and these impacts may be detected by increased accumulation of heavy metals, greenhouse gas constituents, and organic compounds in lichen tissue. The effect of sampling direction and distance from a diamond mine on bioaccum...

OBJECTIVES The vulva is the primary site affected in lichen sclerosus, a chronic dermatosis in women that is histologically characterized by a zone of collagen remodeling in the superior dermis. The normal physiological properties of the vulva depend on the assembly of collagen types I (COLI), III (COLIII) and V (COLV), which form heterotypic fibers, and extracellular matrix protein interaction...

BACKGROUND The aims of this study were to assess the prevalence of hepatitis C virus (HCV) infection in Japanese patients with oral lichen planus and identify the impact of amino acid (aa) substitutions in the HCV core region and IFN-sensitivity-determining region (ISDR) of nonstructural protein 5A (NS5A) associated with lichen planus. METHODS In this retrospective study, 59 patients (group 1...

discussion the disappearance of olp might be due to immunosuppressive therapy following liver transplantation. further observations and studies are necessary to clarify the relationship between olp and pbc. case presentation we describe a case of oral lichen planus (olp) accompanied with pbc that resolved following liver transplantation 14 years later. this patient received immunosuppressive dr...

BACKGROUND An association between HCV infection and lichen planus is uncertain because the prevalence of HCV infection in patients with lichen planus varies considerably from one geographic area to another. The purpose of this study was to determine the frequency of anti-HCV antibodies and its association with various clinical types of lichen planus in Mekkah, Saudi Arabia. METHODS A total of...

AIMS Medicinal plants are increasingly being projected as suitable alternative sources of antiviral agents. The development of a suitable in vitro pharmacodynamic screening technique could contribute to rapid identification of potential bioactive plants and also to the standardization and/or pharmacokinetic-pharmacodynamic profiling of the bioactive components. METHODS AND RESULTS Recombinant...

Lichen nitidus (LN) is an uncommon, usually asymptomatic cutaneous eruption characterized by the presence of multiple, small, flesh-colored papules. The epidemiologic and pathophysiologic characteristics of LN have not yet been defined. Furthermore, LN has rarely been described in association with other cutaneous diseases. We herein report 3 cases of LN associated with various cutaneous disease...

he development of terrestrial lichen communities used as forage by woodland caribou (Rangifer tarandus) in boreal and subboreal forests is strongly linked to changes in canopy structure and associated changes in canopy microclimate that occur during stand succession. Additionally, substrate type and proximity to propagule sources can have a major inluence on lichen establishment. Increasingly, ...

BACKGROUND AND AIMS Oral lichen planus is a relatively common chronic oral mucosal disease of unknown etiology. Regarding numerous studies on the immunologic factors involved in the etiology of lichen planus, the present study evaluated the serum interleukin-17 (IL-17) level in patients with erosive and non-erosive oral lichen planus. MATERIALS AND METHODS This descriptive analytical study in...

DOI: 10.4103/2229-5178.209617 and Analysis of 38 Cases. Dermatol Surg 2015;41:1411‐8. 3. Tong LX, Weinstock M, Drews R, Sheikine Y, Kim CC. Widely metastatic squamous cell carcinoma originating from malignant transformation of hypertrophic lichen planus in a 24‐year‐old woman: Case report and review of the literature. Pediatr Dermatol 2015;32:e98‐101. 4. Wörheide J, Bonsmann G, Kolde G, Hamm H....