نتایج جستجو برای: retinoic acid
تعداد نتایج: 747591 فیلتر نتایج به سال:
Background and Objective: Hair follicle stem cells are multipotent, located in the bulge area, and are highly proliferating. Retinoids have an effect on epidermal differentiation and keratinization. Retinoic acid is used to treat some skin diseases such as Melasma, Acne and Ichthyosis. So, the study of all-trans retinoic acid effect on hair follicle stem cells and determination of the effective...
Introduction & Objective: All-trans retinoic acid, a derivative of retinoids, is widely used to in-duce prolifferation, differentiation and apoptosis in normal, precancareous and cancerous cells. Cisplatin, an effective drug for cancer treatment, induces apoptosis via cross-linking to DNA. Previous studies on ovarian and melanoma cancer cells have showed synergistic ef-fects of cisplatin and ...
ABSTRACT: Retinoic acid "one of the derivatives of vitamin A "has different morphogenic and teratogenic effects on developing organs. For this reason, the present study is an attempt to examine the effects of retinoic acid on limb bud ,eye and body axis of chick embryo in the stages of 11-12 Humburger and Hamilton. The experiments cartied out in this study was based on 140 white eggs which h...
background: retinoic acid as one of the most important regulators for cell differentiation was examined in this study for differentiation of human umbilical mesenchymal cells (hucm). methods: after isolation, hucm were evaluated for mesenchymal stem cell properties by flow cytometry and alkaline phosphatase assay. also, doubling time of the cells and their differentiation potential into adipoge...
retinoic acid (ra) plays a key role in pattern formation along the major body axis and limbformation during vertebrate development. exposure to excessive retinoic acid (in uterus) generatescongenital malformations in limbs, craniofacial, cns, urogenital, heart, and axial skeletons. in thesestudies, seven groups of nmri pregnant mice were administered a single gavage dose of 100 mg /kgbody weigh...
Background: Urtica dioica (UD), as a natural antioxidant, has positive effects on oocyte maturation. This study aimed to investigate the effects of hydro-alcoholic UD extract and retinoic acid on follicular development in an in vitro fertilization (IVF) condition. Methods: A total of 40 female Wistar rats were randomly divided into 5 groups: group 1 received normal saline, group 2 was given...
Background and Objectives: Retinoic acid has a major role in a variety of biological processes including growth and differentiation. One of these effects is epithelialization seen in blastema tissue exposed to different concentration of retinoic acid, due to its embryo-like cells. The main objective of this research was to investigate an experimental studies of employed different concentratio...
in this review, we aim to examine the effect of extrinsic and intrinsic factors on spermatogenesis process taking into account a complex signaling pathway. primarily, it is suggested that retinoic acid (ra) has a vital function in spermatogenesis process and it is considered to be essential for completion of spermatogonia into mature spermatozoa. in the present review, the key effects of retino...
the purpose of this study was to compare the efficacy of retinoic acid 0.05% with triamcinolone acetonide 0.1%, both in an oral base, in the treatment of atrophic and erosive oral lichen planus. thirty patients with clinically proven oral lichen planus were asked to participate in the study. the severity of lesions was scored from 0 (no lesion) to 5 (large erosion), and symptoms were scored ran...
retinoic acid and rosa damascena are compounds that have considerable effects in the cellular proliferation and synthesis of extracellular matrix. the present study was designed to assess the combined effects of retinoic acid and rosa damascena mill on wound in diabetic rats. seventy-two rats were used in this study. diabetes was induced by a single intraperitoneal injection of streptozotocin (...
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