AIMS Understanding endothelial cell repopulation post-stenting and how this modulates in-stent restenosis is critical to improving arterial healing post-stenting. We used a novel murine stent model to investigate endothelial cell repopulation post-stenting, comparing the response of drug-eluting stents with a primary genetic modification to improve endothelial cell function. METHODS AND RESUL...

Cytotoxic chemotherapy remains the first-line therapy for many advanced solid tumors; hence, understanding the underlying mechanisms to overcome chemoresistance remains a top research priority. In the clinic, chemotherapy is administered in multiple cycles that are spaced out to allow the recovery or repopulation of normal tissues and tissue stem cells between treatment cycles. However, residua...

Blockade of phagocytosis and selective elimination of macrophages (m phi s) are generally accepted procedures for gaining knowledge about the function of m phi s in vivo. This study demonstrates that intravenous injection of gadolinium chloride (GdCl3) not only blocks phagocytosis by rat liver m phi s (Kupffer cells) but also selectively eliminates the large m phi s situated in the periportal z...

as the urban population increases in major cities of iran, many of them face different issues. in iran, new towns are built and located near cities to absorb their overflow population. golbahar new town was built near mashhad metropolis to reduce demographic, economic, social and physical problems of mashhad, but in practice considering its goals, the town has not been able to reduce the proble...

For example, experimental data have shown that the accelerated repopulation response of squamous epithelia (Dörr 1977) is analogous to the acute response of normal tissue after injury. It is suggested (Trott and Kummermehr 1991) that squamous cell carcinomas retain some of the homeostatic control mechanisms characteristic of their tissue of origin. Similarly, data from this and other studies su...

The rate of repopulation of surviving cells increases during fractionated radiotherapy and limits the ability to control tumors. Repopulation is likely to be more important during the longer intervals between courses of chemotherapy and is a potential cause of clinical resistance to chemotherapy. To evaluate the rate of repopulation of surviving cells in MXT and EMT-6 mouse breast tumors betwee...

Over the past decade xenotransplantation systems have been used with increasing success to gain a better understanding of human cells that are able to initiate and maintain the hematopoietic system in vivo. The nonobese diabetic/severe combined immunodeficiency (SCID) mouse has been a particularly useful model. Human cells capable of hematopoietic repopulation in this mouse, termed SCID-repopul...

T cell precursors located in peripheral immune tissues have been studied according to the potential to repopulate the thymus and the gut of lethally irradiated mice. T cell repopulation could be achieved with spleen cells from athymic or euthymic mice thoroughly devoid of mature T cells. Repopulation did not occur with lymph node lymphocytes as determined from studies in congenic mice. The kine...

Background: Saffron is widely used as a food flavor and has well known medicinal effects which have an effect on steroid and sexual hormones. The aim of present study was investigation of saffron orally administration on spermatogenesis index in stress induced rats. Materials and Methods: In present study, 160 male adult rats divided to four groups with 10 rats per each cage and with four repli...

Microglia mediate chronic neuroinflammation following central nervous system (CNS) disease or injury, and in doing so, damage the local brain environment by impairing recovery and contributing to disease processes. Microglia are critically dependent on signaling through the colony-stimulating factor 1 receptor (CSF1R) and can be eliminated via administration of CSF1R inhibitors. Resolving chron...