PURPOSE During development of the nervous system, neuronal migration and axonal growth depend on specific interactions with molecules in the extracellular matrix. In a recent study of laminin expression, it was shown that laminin B1 mRNA was expressed by both nonneural cells and the retinal ganglion cells during development of the mouse retina. Because collagen IV is associated with laminin in ...

Type IV collagen forms a network that provides the major structural support for basement membranes. Basement membranes are specialized forms of extracellular matrix with important functions in development. One collagen gene (Dcg1) was characterized in Drosophila melanogaster and shown to encode a collagen chain related to vertebrate basement membrane type IV collagen chains. Therefore, to acces...

BACKGROUND Fibrosis is the process of excessive deposition of collagen and other extra cellular matrix components and large amounts of these components have been shown in periovular schistosomal granulomas, especially in the liver. Laminin and type IV collagen have been investigated in various hepatic disorders but their accuracy in fibrosis detection and in the evaluation of its progression in...

Collagen IV is found in the renal proximal tubular cell (RPTC) basement membrane and is a mediator of renal development and function. Pharmacological concentrations of L-ascorbic acid phosphate (AscP) promote the repair of physiological functions in RPTC sublethally injured by S-(1,2-dichlorovinyl)-L-cysteine (DCVC). We hypothesized that AscP promotes RPTC repair by stimulating collagen IV synt...

Anchoring functions of collagen VII depend on its ability to form homotypic fibrils and to bind to other macromolecules to form heterotypic complexes. Biosensor-based binding assays were employed to analyze the kinetics of the NC1 domain-mediated binding of collagen VII to laminin 5, collagen IV, and collagen I. We showed that collagen VII interacts with laminin 5 and collagen IV with a Kd valu...

Collagen type IV is a major component of the basal lamina of blood vessels. Six genetically distinct collagen type IV chains have been identified and are distributed in a tissue-specific manner. Here we define a novel function for soluble non-collagenous (NC1) domains of the alpha2(IV), alpha3(IV), and alpha6(IV) chains of human collagen type IV in the regulation of angiogenesis and tumor growt...

Collagen IV is a major structural component of all basal laminae (BLs). Six collagen IV alpha chains are present in mammals; alpha 1 and alpha 2(IV) are broadly expressed in embryos and adults, whereas alpha 3-6(IV) are restricted to a defined subset of BLs. In the glomerular BL of the kidney, the alpha 1 and alpha 2(IV) chains are replaced by the alpha 3-5(IV) chains as development proceeds. I...

Skin aging is influenced by two distinct processes: intrinsic and extrinsic aging. The latter regroups the external factors influencing skin aging, including cigarette smoke sun rays. While these factors, studied separately, are known to cause premature effects of their synergy have been poorly characterized. objective this project assess harmful impact on Healthy substitutes were produced acco...

To investigate the turnover of type IV collagen in skeletal muscle in conditions where muscle function is impaired, type IV collagen and proteins regulating its degradation were studied during 1, 3 and 7 days of immobilization, 3and 10-day glucocorticoid treatment and in neuromuscular diseases. In addition, fibrillar type I and III collagens were studied during immobilization and in neuromuscul...