objectives : platelet preparations are commonly used to enhance bone and soft tissue regeneration. considering the existing controversies on the efficacy of platelet products for tissue regeneration, more in vitro studies are required. the aim of the present study was to compare the in vitro effects of plasma rich in growth factors (prgf) and platelet-rich fibrin (prf) on proliferation and viab...

background : angiogenesis, the formation of new blood vessels from preexisting ones, is among the most important physiological and pathological processes that occur in the body. under pathological conditions such as tumor growth, psoriasis, corneal neovascularization and rheumatoid arthritis, angiogenesis is substantial for the development of the disease. zataria multiflora is a member of the l...

the stem cells can be considered as the miracle of creation, because, they are a major reservoir of the bioactive factors, molecules and cells. these reservoir cells play a major role in development and growth of the tissues and organs. regardless of the differences in differentiation capacity of embryonic and adult stem cells, both the cells are rich sources of stem cells with therapeutic appl...

â  â  background esophageal squamous cell carcinoma (escc) is usually detected in advanced stages resulting in a very poor prognosis. early diagnoâ­sis needs identification of clinically relevant precancerous lesions which could become the target of screening and early treatment. our aim was to check whether esophagitis could serve as a relevant histological precursor of escc in northern iran. ...

objective(s): irinotecan is a potent anti-cancer drug from camptothecin group which inhibits topoisomerase i. recently, biodegradable and biocompatible polymers such as poly lactide-co-glycolides (plga) have been considered for the preparation of nanoparticles (nps). materials and methods: in this study, irinotecan loaded plga nps were fabricated by an emulsification/solvent diffusion method to...

in cell therapy and regenerative medicine, a reliable source of stem cells together with cytokine growth factors and biomaterial scaffolds seem necessary. as adipose tissue is easy accessible and is abundant source of adult stem cells and can differentiate along multiple lineages, it can be considered as a good candidate in aesthetic medicine. the clinical application of adipose-derived stem ce...

giant cell fibroma (gcf) was described as a new entity of fibrous hyperplastic soft tissue. it seems that stimulus from an unexplained origin can have a role in its etiology. histopathologically gcf is consisted of multinucleated fibroblasts that have oval shape nuclei within the eosinophilic cytoplasm. surgical excision is the treatment of choice and recurrence is very rare. here we report a c...

subcutaneous panniculitis-like t-cell lymphoma (sptcl) is an infrequent cytotoxic t-cell lymphoma of the skin with a unique immunophenotypic profile. here we describe this lymphoma in a 30-year-old iranian woman. she presented with periorbital edema, mandibular swelling with edematous areas on her face and two small lymph nodes (6-7mm) in the cervical area. histopathological findings revealed l...

Dendritic cells (DCs) induce pathogen-specific T cell responses. We comprehensively studied the effects of addition of maturation stimulus, fibroblasts (fibroblast conditioned medium), PHA activated T cells (T cell conditioned medium), and mixture of fibroblast & PHA activated T cells (FCM-TCCM) conditioned media on maturation of DCs. Monocytes were cultured with GM-CSF and IL-4 for five days. ...

a primary intraosseous carcinoma (pioc) is a squamous cell carcinoma arising within the  jawbone andshould be differentiated from a malignant ameloblastoma.  it  is not due to arising from an odontogenic cyst or tumor. the possibility of the lesion being  a metastasis fromanotherprimary site should be considered, and excluded by a careful history and examination. the diagnosis of a pioc is rare...