Four organic-decorated quaternary TM-Hg-Sb-Q compounds, namely, [Mn(phen)](2)HgSb(2)S(6) (phen = 1,10-phenanthroline) (1) and isomorphic [TM(tren)]HgSb(2)Se(5) (TM = Mn (2), Fe (3), Co (4); tren = tris(2-aminoethyl)amine) have been solvothermally prepared, and structurally characterized by single crystal X-ray diffraction analyses. 1 and 2 (3, 4) feature distinct one-dimensional neutral infinit...

The problem of axial propagation circularly polarized light in a birefringent structurally chiral medium is exactly solved via full electromagnetic analysis. Underlying symmetries the system's characteristic matrix reveal interesting insights, which are confirmed by coupled wave theory. For extreme values chirality, reverse circular Bragg resonance arises negative refraction regime where handed...

©2015 8872147 Canada Inc. or its licensors CMAJ 1 A 26-year-old man with a history of uncontrolled hyperlipidemia presented with a six-month history of painful, multiple papules on his chest, back and limbs. The two-year-old tattoos on his right leg were covered by a linear arrangement of papules, suggesting a Koebner phenomenon (Figure 1A). A biopsy from the lesions on the tattoos showed infil...

Chemokines are the principal regulators of leukocyte migration and are essential for initiation and maintenance of inflammation. Atypical chemokine receptor 2 (ACKR2) binds and scavenges proinflammatory CC-chemokines, regulates cutaneous T-cell positioning, and limits the spread of inflammation in vivo Altered ACKR2 function has been implicated in several inflammatory disorders, including psori...

CGS: cutaneous granulocytic sarcoma GS: granulocytic sarcoma IHC: immunohistochemistry KP: Koebner phenomenon MDS: myelodysplastic syndrome MPO: myeloperoxidase PG: pyoderma gangrenosum TGF-b1: transforming growth factor-beta 1 TGF-b1R: transforming growth factor-beta 1 receptor INTRODUCTION Granulocytic sarcoma (GS) is also known as myeloid sarcoma or chloroma because of its green hue caused b...

Progressive macular hypomelanosis is an acquired skin pigmentation disorder that was initially thought to be related to racial characteristics, but is currently more often associated with the presence of Propionibacterium acnes. A 23-year-old woman was seen for the progressive appearance over a 5-year period of asymptomatic whitish lesions on the trunk (Figures 1A and 2). The lesions were poorl...

A case of a 75 year old woman with drug-induced bullous pemphigoid is reported. Lesions also involved the site of a burn scar. Systemic steroid therapy proved to be effective on all lesions except for the ones located on the burn scar. In this patient the scarred area acted as a ‘vulnerable’ site, not only facilitating the localization of bullae on the scar (Koebner phenomenon), but also render...