No abstract available.
Cell Differentiation

Pelvic Bones* ; Sex Differentiation*

No abstract available.
Cell Differentiation* ; Mesothelioma*

The polarity of ameloblasts and odontoblasts is crucial for their differentiation and function. Polarity-related molecules play an important role in this process. This review summarizes the process of polarity formation of ameloblasts and odontoblasts and their related regulators.
Ameloblasts ; Cell Differentiation ; Odontoblasts

Follicular adenoma is a benign encapsulated tumor with evidence of follicular cell differentiation. It is the most common thyroid neoplasm, usually solitary and has a well-defined fibrous capsule. We experienced a case of follicular adenoma occurring in congenital goiter and reported with the brief review of related literature
Adenoma* ; Cell Differentiation ; Goiter* ; Thyroid Neoplasms

No abstract available.
Cell Differentiation ; Cell Proliferation ; Fibronectins* ; Osteoblasts* ; Titanium

The direct reprogramming of a terminally differentiated cell into another lineage using defined combinations of factors has fundamentally changed traditional concepts of the inalterability of differentiated cells. Many studies have achieved direct conversion into various cell types in recent years, and this strategy is considered to be a promising approach for inducing functional cells. Here, we review work on direct reprogramming, from the early pioneering studies to the most recent, including the discovery of novel reprogramming factors, molecular mechanisms, and strategies. We also discuss the applications of direct reprogramming and the perspectives and challenges of this novel technology.
Cell Differentiation ; Regenerative Medicine ; Transcription Factors

BACKGROUND: Seborrheic keratosis(SK) is a benign epidermal tumor histopathologically composed of basaloid cells and squamous cells. OBJECTIVE: We investigated the mode of expression of various epidermal differentiation markers in SK. METHODS: Twenty two cases of pathologically confirmed SK were collected from the pathologic files. The histological types included acanthotic type (19 cases) and reticulated type (3 cases). Immunohistochemical staining to various cytokeratins(CK), involucrin, loricrin and filaggrin was performed. RESULTS: Two expression patterns of CK 1 were observed. There was diffuse homogeneous expression of CK 1 in squamous cells in 14 cases and in 8 cases heterogeneous expression with immunoreactive cells scattered among nonimmunoreactive cells to CK 1. Immunoreactivities to CK 14 were observed in basaloid cells. CK 6 was expressed in entire epidermis including basal layer in 19 cases. But stronger expression of CK 6 was expressed in squamous cells than in basaloid cells. In 3 cases immunoreactive cells to CK6 were squamous cells in spinous and granular layer. CAM 5.2 was focally expressed in basaloid cells only in one case. Expression of involucrin was observed in squamous cells in upper spinous and granular layer. Loricrin and filaggrin were expressed linearly in only uppermost granular layer or with horny layer. CONCLUSION: CK expressions in SK suggest that differentiation process from basaloid cells to squamous cells is the same as that of from basal cells to sqamous cells in the suprabasal epidermis. Squamous cells of SK are activated keratinocytes which proceed normal keratinization with normal involucrin expression although terminal differentiation is presumptive to be slightly retarded because of decreased expression of loricrin and filaggrin.
Antigens, Differentiation* ; Epidermis ; Keratinocytes ; Keratosis, Seborrheic*

Leydig cells, located in the loose interstitial tissue of seminiferous tubules, are the major site for androgen synthesis and secretion, and play an important role in the reproductively and fertility of males. The dysfunction of Leydig cells may lead to various male diseases, such as primary hypogonadism, cryptorchidism, and hypospadias. This review outlines the recent findings concerning the generation, development and regulation of Leydig cells.
Cell Differentiation ; Humans ; Leydig Cells ; cytology ; Male

Cell Differentiation ; Humans ; Stem Cells ; Tooth ; cytology