Fibroblastic response to treatment with different preparations rich in growth factors Tập 42 Số 2 - Trang 162-170 - 2009
Eduardo Anitua, Mikel Sánchez, Mar Zalduendo, María de la Fuente, Roberto Prado, Gorka Orive, Isabel Andı́a
AbstractObjectives: Preparations rich in growth factors (PRGF) release them
plus bioactive proteins at localized sites, with the aim of triggering healing
and regenerative processes. The prevailing paradigm suggests that their
influence on proliferation, angiogenesis and the extracellular matrix synthesis
is minimal. However, variations in their composition and impact on different
cell phenotypes... hiện toàn bộ
Stem cells and neurological diseases Tập 41 Số s1 - Trang 94-114 - 2008
David C. Hess, Cesar V. Borlongan
Abstract. Cells of the central nervous system were once thought to be incapable
of regeneration. This dogma has been challenged in the last decade with studies
showing new, migrating stem cells in the brain in many rodent injury models and
findings of new neurones in the human hippocampus in adults. Moreover, there are
reports of bone marrow‐derived cells developing neuronal and vascular phenotyp... hiện toàn bộ
Hepatic stem cells: from inside and outside the liver? Tập 37 Số 1 - Trang 1-21 - 2004
Malcolm Alison, Pamela Vig, Francesco Paolo Russo, Brian Bigger, Eunice Amofah, Michael Themis, Stuart J. Forbes
Abstract. The liver is normally proliferatively quiescent, but hepatocyte loss
through partial hepatectomy, uncomplicated by virus infection or inflammation,
invokes a rapid regenerative response from all cell types in the liver to
perfectly restore liver mass. Moreover, hepatocyte transplants in animals have
shown that a certain proportion of hepatocytes in foetal and adult liver can
clonally e... hiện toàn bộ
MicroRNA‐494 suppresses cell proliferation and induces senescence in A549 lung cancer cells Tập 45 Số 1 - Trang 32-38 - 2012
Hiroaki Ohdaira, Masaki Sekiguchi, Kenichi Miyata, Kenichi Yoshida
AbstractObjectives: MicroRNAs (miRNAs) are small functional RNAs that regulate
mRNAs for degradation or translational suppression. In the present study, we
aimed to reveal functional importance of miRNA‐494 (miR‐494) in A549 human lung
cancer cells.Materials and methods: We established A549 cells that
constitutively expressed miR‐494. Next, we sought to investigate insulin‐like
growth factor 2 m... hiện toàn bộ
Cell kinetic status of haematopoietic stem cells Tập 34 Số 2 - Trang 71-83 - 2001
Michael C. Mackey
Abstract.The haematopoietic stem cell (HSC) population supports a tremendous
cellular production over the course of an animal’s lifetime, e.g. adult humans
produce their body weight in red cells, white cells and platelets every 7 years,
while the mouse produces about 60% of its body weight in the course of a 2 year
lifespan. Understanding how the HSC population carries this out is of interest
and ... hiện toàn bộ
A quantitative method for the analysis of mammalian cell proliferation in culture in terms of dividing and non‐dividing cells Tập 28 Số 3 - Trang 137-144 - 1995
James L. Sherley, Patrizia B. Stadler, J.S. Stadler
AbstractThe application of the exponential growth equation is the standard
method employed in the quantitative analyses of mammalian cell proliferation in
culture. This method is based on the implicit assumption that, within a cell
population under study, all division events give rise to daughter cells that
always divide. When a cell population does not adhere to this assumption, use of
the expone... hiện toàn bộ
Impact of oxygen environment on mesenchymal stem cell expansion and chondrogenic differentiation Tập 42 Số 4 - Trang 471-484 - 2009
Axel Krinner, Matthias Zscharnack, Augustinus Bader, Dirk Drasdo, Joerg Galle
AbstractIntroduction: In vitro expansion and differentiation of mesenchymal
stem cells (MSC) rely on specific environmental conditions, and investigations
have demonstrated that one crucial factor is oxygen environment.Objectives: In
order to understand the impact of oxygen tension on MSC culture and chondrogenic
differentiation in vitro, we developed a mathematical model of these processes
and ... hiện toàn bộ
Diffusion‐limited binding explains binary dose response for local arterial and tumour drug delivery Tập 42 Số 3 - Trang 348-363 - 2009
Abraham R. Tzafriri, A. Levin, Elazer R. Edelman
AbstractBackground: Local drug delivery has transformed medicine, yet it
remains unclear how drug efficacy depends on physicochemical properties and
delivery kinetics. Most therapies seek to prolong release, yet recent studies
demonstrate sustained clinical benefit following local bolus endovascular
delivery.Objectives: The purpose of the current study was to examine interplay
between drug dose,... hiện toàn bộ