Lupus Miliaris Disseminatus Faciei

A forty-five year old male presented with acneiform eruptions on his face, biopsy of which revealed the presence of caseating granuloma. The diagnosis was made as lupus miliaris desseminatus faciei, which replased following various therapies. The case is reported for its late onset, persistent and relapsing nature

Influence of Redox Stress on Crosstalk between Fibroblasts and Keratinocytes

Although the skin is constantly subjected to endogenous and exogenous stress, it maintains a homeostatic state through wound repair and regeneration pathways. Treatment for skin diseases and injury requires a significant understanding of the various mechanisms and interactions that occur within skin cells. Keratinocytes and fibroblasts interact with each other and act as key players in the repair process. Although fibroblasts and keratinocytes are widely studied in wound healing and skin remodeling under different conditions, the influence of redox stress on keratinocyte-fibroblast crosstalk has not been thoroughly investigated. In this study, we used cold atmospheric plasma (CAP) to generate and deliver oxidative stress to keratinocytes and fibroblasts and to assess its impact on their interactions. To this end, we used a well-established in vitro 3D co-culture model imitating a realistic scenario. Our study shows that low CAP exposure is biocompatible and does not affect the viability or energetics of fibroblasts and keratinocytes. Exposure to low doses of CAP enhanced the proliferation rate of cells and stimulated the expression of key genes (KGF, MMP2, GMCSF, IL-6, and IL-8) in fibroblasts, indicating the activation and initiation of the skin repair process. Additionally, enhanced migration was observed under co-culture conditions under the given redox stress conditions, and expression of the upstream regulator and the effectors of the Hippo pathway (YAP and CYR61, respectively), which are associated with enhanced migration, were elevated. Overall, this study reinforces the application of CAP and redox stress in skin repair physiology

Pseudoxanthoma elasticum and nephrocalcinosis: Incidental finding or an infrequent manifestation?

Pseudoxanthoma elasticum (PXE) is an inherited disorder characterized by generalized fragmentation and progressive calcification of elastic tissue. We report two sporadic cases of PXE, both of whom presented with asymptomatic yellowish papules over the flexural sites for cosmetic reasons. Histopathological findings on hematoxylin and eosin and Verhoeff-Van Gieson (VVG) staining were classical of PXE. In addition to this, renal calcification was documented on plain radiography of kidneys, ureters, and bladder (KUB) in both the cases. Paucity of literature describing the association of nephrocalcinosis with PXE prompted the present report