After our studies on the distribution of water, nitrogen and electrolytes in the whole skin, it was thought that the different layers of the skin should be investigated separately. The epidermis was therefore separated from the corium and the nitrogen and electrolyte distribution was determined in each of the layers In view of the fact that adequate literature on the methods for the separation ...

To explore the profibrotic characteristics of the autografted dermis, acellular dermal matrix, and dermal fibroblasts from superficial/deep layers of pig skin, 93 wounds were established on the dorsa of 7 pigs. 72 wounds autografted with the superficial/deep dermis and acellular dermal matrix served as the superficial/deep dermis and acellular dermal matrix group, respectively, and were sampled...

This paper reports on a unique preservation of soft tissues in the ventrolateral region of the plant-eating dinosaur Psittacosaurus from the Jehol biota of China. The preservation is of a deep cross section through the dermis, which includes multiple layers of collagenous fibres in excess of 25, among the highest recorded in vertebrates, with a further 15 more layers (poorly preserved) estimate...

The skin is a complex stratifi ed organ which acts not only as a permeability barrier and defense against external agents, but also has essential thermoregulatory, sensory and metabolic functions. Due to its high versatility and activity, the skin undergoes continuous selfrenewal to repair damaged tissue and replace old cells. Consequently, the skin is a reservoir for adult stem cells of diff e...

We report the case of a 76-year-old woman who presented with asymptomatic extensive erythematous. Firm plaques were noted over the right cheek. Complete blood count was normal, as was a peripheral smear. An excision biopsy taken from the cheek showed infiltration of the dermis and hypodermis with atypical cells which were strongly positive for human leukocyte antigen (HLA-DR) and lysozyme and w...

BACKGROUND The two types of skin aging (intrinsic and extrinsic) share important molecular features, while having distinct differences on the macromolecular level: both lead to increased production of reactive oxygen species, enhanced matrix metalloproteinase expression and decreased procollagen synthesis. L-Carnitine L-tartrate has been reported to have anti-aging effects. AIM AND METHODS Th...

The fine structure and water permeability of hypodermis isolated from roots of Clivia miniata have been studied. The hypodermis is composed of five layers of cells arranged in radial rows. The cell walls of these layers consist of primary and tertiary walls and suberized secondary walls which are lamellated. Water permeability of the isolates was low, around the value of 10Ð9 m sÐ1. This value ...

Collagen pentapeptide (Lys-Thr-Thr-Lys-Ser, KTTKS) and its palmitoylated derivative (pal-KTTKS) have received a great deal of attention as cosmeceutical ingredients for their anti-wrinkle effects. The objective of this study was to evaluate stability and permeability of KTTKS and pal-KTTKS in hairless mouse skin. In this study, a liquid chromatography-tandem mass spectrometric method was develo...

A model of colour formation within human skin has been developed to aid the characterisation of pigmented skin lesions from their digitized colour images. The model is based on the Kublenka–Munk theory of scattering and absorption within inhomogeneous materials and the physics pertaining to their colour properties. By considering the skin to be a layered construction of such materials, the stra...