نتایج جستجو برای: the epithelial thickness of hair root sheath
تعداد نتایج: 22823130 فیلتر نتایج به سال:
the treatment of in completely formed pulpless teeth has presented considrable problems. these teeth have wide open apexes and the walls of the root canal diverge toward the apical tissues. mechanical preparation cannot be done in the normal manner beacause of the large initial size and the taper of apical part of the canal , a mechanical stop cannot be produced at the apex of the canal and , t...
background: prp (platelet-rich plasma) is a biological product that has shown significant therapeutic results compared to synthetic drugs and some traditional methods. the advantages of this method include: prp, compared to other biological materials, is easily prepared in clinic and the safety is high as well. objectives: we aimed to investigate the evaluation of histomorphometric properties a...
We took biopsies from similar sites on the scalps of normal controls, normal looking and hair loss areas of patients with alopecia areata. The specimens were sectioned serially and horizontally. We measured morphological parameters, such as the diameter of the hair shaft, the thickness of the inner root sheath, the diameter of the outer root sheath, the irregularity of the outer root sheath and...
Emergence and spread of various diseases in the past century have been associated with many problems for the health care providers. Now a days, with advancement of technology, new methods such as cell therapy, are available, efficient and successful in some clinical areas. To use any cell, it is necessary to identify its source, so herein, we reviewed the literature of a new source of adult ste...
BACKGROUND CD10 and CD34 have been detected in both epithelial and mesenchymal components of anagen human hair follicles. OBJECTIVES To analyse the expression of CD10 and CD34 in human hair follicle development as well as in different phases of the hair cycle. METHODS Fetal and adult hair follicles at different stages of the hair cycle were examined by immunohistochemistry for CD10 and CD34...
Background & Aims : Hair follicle morphogenesis is controlled by complex reprocical ectodermal–mesenchymal interactions regulated by molecular mechanisms. In addition, glycoconjugates are known to be important for molecular interactions during developmental processes. The aim of this research was to study glcoconjugate terminal sugars distributions and changes during rat hair follicle morph...
Interactions between ectodermal and mesenchymal extracellular signaling pathways regulate hair follicle (HF) morphogenesis and hair cycling. Bone morphogenetic proteins (BMPs) are known to be important in hair follicle development by affecting the local cell fate modulation. To study the role of BMP signaling in the HF, we disrupted Bmpr1a, which encodes the BMP receptor type IA (BMPR1A) in an ...
the history of plant’s used for mankind is as old as the start of humankind. initially, people used plants for their nutritional proposes but after the discovery of medicinal properties, this natural ?ora became a useful source of disease cure and health improvement across various human communities. berberis vulgaris is one of the medicinal plants used in iranian traditional medicine. berberis ...
Hair-follicle regression in the bald scalps of stumptailed macaques develops after puberty, which corresponds to an elevation of serum testosterone and dihydrotestosterone. Using the cultured cells from the pre- and postpubertal macaques, we examined the role of dermal papilla cells in testosterone-induced inhibition of outer root sheath cell proliferation. Testosterone showed no effects on pro...
We analyzed changes of growth and apoptotic cell death in human hair follicles. In anagen hair follicles, terminal deoxynucleotidyltransferase-mediated deoxyuridine triphosphate-biotin nick labeling-positive cells were observed in the keratogenous zone of the upper bulb matrix, the inner root sheath, and the companion layer of the outer root sheath. DNA ladder formation was also detected in ana...
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