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Träfflista för sökning "WFRF:(Tryggvason Karl) srt2:(2002-2004)"

Sökning: WFRF:(Tryggvason Karl) > (2002-2004)

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2.
  • Petäjäniemi, Noora, et al. (författare)
  • Localization of laminin alpha4-chain in developing and adult human tissues
  • 2002
  • Ingår i: Journal of Histochemistry and Cytochemistry. - : SAGE Publications. - 0022-1554 .- 1551-5044. ; 50:8, s. 1113-1130
  • Tidskriftsartikel (refereegranskat)abstract
    • Recent studies suggest important functions for laminin-8 (Ln-8; alpha4beta1gamma1) in vascular and blood cell biology, but its distribution in human tissues has remained elusive. We have raised a monoclonal antibody (MAb) FC10, and by enzyme-linked immunoassay (EIA) and Western blotting techniques we show that it recognizes the human Ln alpha4-chain. Immunoreactivity for the Ln alpha4-chain was localized in tissues of mesodermal origin, such as basement membranes (BMs) of endothelia, adipocytes, and skeletal, smooth, and cardiac muscle cells. In addition, the Ln alpha4-chain was found in regions of some epithelial BMs, including epidermis, salivary glands, pancreas, esophageal and gastric glands, intestinal crypts, and some renal medullary tubules. Developmental differences in the distribution of Ln alpha4-chain were detected in skeletal muscle, walls of vessels, and intestinal crypts. Ln alpha4- and Ln alpha2-chains co-localized in BMs of fetal skeletal muscle cells and in some epithelial BMs, e.g., in gastric glands and acini of pancreas. Cultured human pulmonary artery endothelial (HPAE) cells produced Ln alpha4-chain as M(r) 180,000 and 200,000 doublet and rapidly deposited it to the growth substratum. In cell-free extracellular matrices of human kidney and lung, Ln alpha4-chain was found as M(r) 180,000 protein.
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3.
  • Stoltzfus, Patricia, et al. (författare)
  • Laminin-5 gamma2 chain expression facilitates detection of invasive squamous cell carcinoma of the uterine cervix.
  • 2004
  • Ingår i: International Journal of Gynecological Pathology. - : Lippincott Williams & Wilkins. - 0277-1691 .- 1538-7151. ; 23:3, s. 215-222
  • Tidskriftsartikel (refereegranskat)abstract
    • Because it has been suggested that laminin-5 can be used as a sensitive marker for epithelial cell invasion, specimens from patients with invasive squamous cell carcinoma of the uterine cervix with a previous history of preinvasive lesions were evaluated by a newly developed monoclonal antibody directed against the gamma2 chain of laminin-5. Thirty-two archival paraffin specimens consisting of the matched preinvasive and invasive lesions from 15 women were evaluated to determine whether gamma2 chain laminin-5 staining was present in lesions that progressed to invasive cancer. With the exception of one tumor (a small cell nonkeratinizing squamous carcinoma), all squamous cell carcinomas exhibited positive staining. Five of 17 preinvasive lesions also were immunoreactive for the laminin-5 protein. A blinded histologic reevaluation revealed invasion or lesions suspicious for invasion in four of five preinvasive lesions. Our findings suggest that laminin-5 determined by a monoclonal antibody facilitates the identification of invasive lesions that are difficult or impossible to identify on routinely stained histologic sections.
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