Background: In the present study, a tissue engineered silk fibroin (SF) scaffold containing simvastatin-loaded silk fibroin nanoparticles (SFNPs) were used to stimulate the regeneration of the defected bone. Methods: At first, the porous SF scaffold was prepared using freeze-drying. Then simvastatin-loaded SFNPs were made by dissolvation method and embedded in the SF scaffold. Afterwards, the ...

all-trans retinoic acid (atra), as an active metabolite of vitamin a, has been shown to affect immune cells. this study was performed to evaluate the effect of atra on viability, proliferation, activation and lineage-specific transcription factors of cd4+ t cells. cd4+ t cells were  separated  from  heparinized  blood  of  healthy  donors  and  were  cultured  in conditions, some with, some wit...

background: osteosarcoma is a malignant tumor with high mortality but effective therapy has not yet been developed. berberine, an isoquinoline alkaloid component in several chinese herbs including huanglian, has been shown to induce growth inhibition and the apoptosis of certain cancer cells. the aim of this study was to determine the role of berberine on human osteosarcoma cell lines u2os and ...

Avulsed teeth that are replanted dried are more prone to loss. Recent tissue engineering studies focus onfabrication of various cell delivery systems to improve the overall prognosis of such teeth. To evaluate this newcell transplant method, we initially aimed at designing of PRF scaffold and determining BMMSCs viabilityand function on the fabricated scaffold. To test this concept in-vitro, hum...

Background: Re-epithelialization has an important role in skin wound healing. Delays in re-epithelialization are more likely to create the chronic wound. Impaired wound healing leads to a large burden of morbidity and mortality. Current treatments based on the use of autografts, allografts and xenografts, suffer from limitations such as, quantity of donor skin available, donor-site infection, p...

Zinc as therapeutic agent in skin and wound care has been known for centuries, but its role is controversial and comprehensive investigations in nutrient-deficient environments are lacking. We aimed to provide a broad analysis of different zinc derivatives on proliferation, apoptosis and antimicrobial properties in a simulated nutrient-deficient environment in-vitro. Human fibroblasts (CRL2522)...

Stemness of cancer cells contains limitless self-renewal proliferation. For the purpose proliferation, secretome might exert its effects via paracrine signaling. Specific microRNAs enclosed in stem could regulate expression anti-proliferative APRO family proteins. The biological functions proteins seems to be quite intricate, however, which a key modulator microRNAs, then proliferation cells. I...

Objective- To investigate and compare growth potential as well as aging of mesenchymal stem cells (MSCs) derived from rat bone marrow tissue and adipose tissue (AT) occurred at epicardial and epididymal regions. Design- Experimental study.   Animals- 10 Wistar Rats.   Procedures- Rat MSCs occurred at bone marrow and epicardial and epididymal AT were isolated and culture expanded through sev...

luteolin is a flavone in medicinal plants as well as some vegetables and spices. it is a natural anti-oxidant with less pro-oxidant potential but apparently with a better safety profile. the purpose of this study was to investigate the molecular mechanism of luteolin-mediated apoptosis of mg-63 human osteosarcoma cells. mtt assay kit was employed to evaluate the effects of luteolin on mg-63 cel...

objective(s): multiple sclerosis (ms) is a serious neurological autoimmune disease, it commonly affects young adults. vitamin e (vit e) is an important component of human diet with antioxidant activity, which protects the body’s biological systems. in order to assess the effect of vit e treatment on this autoimmune disease, we established experimental autoimmune encephalomyelitis (eae), the ani...