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Bhushan Madke, Rameshwar Gutte, Bhavana Doshi, Uday Khopkar
Lichen planus (LP) is a common idiopathic inflammatory disorder that affects the flexor aspect of the wrists, the legs, and the oral and genital mucosa. Depending upon the site of involvement, LP can be divided into mucosal, nail, scalp, or palmoplantar types. Palmoplantar LP can pose a diagnostic problem to the clinician as it resembles common dermatoses like psoriasis, verruca, corn, calluses, lichenoid drug eruption, and papular syphilide of secondary syphilis. In this case report, we describe a 4-year-old male child who presented with highly pruritic erythematous to violaceous hyperkeratotic papules and plaques on his palms and soles...
September 2013: Indian Journal of Dermatology
Jonathan H Zippin, Paul A Chadwick, Lonny R Levin, Jochen Buck, Cynthia M Magro
Cyclic adenosine monophosphate (cAMP) is a nearly ubiquitous signaling molecule important for numerous signaling pathways in human skin. We studied a novel class of mammalian adenylyl cyclase, the soluble adenylyl cyclase (sAC). We examined sAC localization in normal human skin and found it to be present in keratinocytes, melanocytes, mononuclear cells, eccrine ducts, and nerves. In normal skin, sAC keratinocyte staining was evenly distributed throughout the cell. However, in certain hyperproliferative disorders of the skin, including psoriasis, verruca vulgaris, and SCCIS on sun-damaged skin, sAC keratinocyte staining was predominantly nuclear...
May 2010: Journal of Investigative Dermatology
V C Weiss, H van den Broek, S Barrett, D P West
Characteristic in vivo binding of IgG and C3 to the stratum corneum of psoriatic lesions has been implicated as a significant event in the pathogenesis of the disease. Immunofluorescent findings of psoriatic lesions are compared with other parakeratotic and nonparakeratotic lesions. Parakeratotic lesions studied include verrucae vulgares in patients with psoriasis, verrucae vulgares in patients without psoriasis, actinic keratoses and lichen simplex chronicus. Psoriatic lesions and other parakeratotic lesions demonstrate similar immunopathological phenomena within the involved stratum corneum: (1) A high percentage of the lesions stain positively with one or more of the immunoglobulins (IgG, IgM and IgA)...
March 1982: Journal of Investigative Dermatology
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