The Morphology and Ultrastructure of Dermal Telocytes Characterized by TEM and AFM.

This investigation delves into the structural foundation of human dermal telocytes (TCs) with the aim of elucidating their role in signal transmission. Dermal TCs were isolated from human foreskins via enzymatic digestion and flow cytometric sorting, and identified by immunohistochemical staining with an antibody against CD34. The ultrastructure of TCs was examined using transmission electron microscopy (TEM).

A Case of Familial Benign Chronic Pemphigus Misdiagnosed as Eczema and Tinea Cruris.

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An unusual case of secondary syphilis misdiagnosed as allergic dermatitis for 2 years.

Dermatologists should be aware that the clinical manifestations of syphilis are very complex and changeable. Unilaterally distributed skin lesions and painless lip ulcers may also be the clinical manifestations of secondary syphilis.

Dedifferentiation of human epidermal melanocytes in vitro by long-term trypsinization.

Human epidermal melanocytes can be induced to form melanocyte spheroids and revert to immature characteristics by long-term trypsinization (LTT). To further explore the biological characteristics of melanocytes after LTT and to study the underlying mechanism. Melanocytes were subjected to long-term (2 h) trypsinization in this study, after which their viability, proliferation and autophagy were characterized.

Cutaneous metastasis of a colon adenocarcinoma presenting as an unusual manifestation: a report of one case.

Colorectal cancer has a low probability of metastasizing to the skin, usually < 6%, and the common sites of metastasis are the liver and lungs. Skin metastases usually occur within 2 years of the discovery of the primary tumor. Here we report a case in which the skin lesions were mainly characterized by unilateral scattered papules and "fake blisters".

The tolerance of human epidermal cells to trypsinization in vitro.

To characterize the tolerance of different types of human epidermal cells to trypsinization in vitro and develop a new method to separate and purify melanocytes according to their tolerance to trypsinization. Epidermal cells were obtained by separating the epidermis from human foreskins. Some of those cells were used for routine culture, and then were subjected to differential trypsin digestion.

Characterization of Induced Pluripotent Stem Cells from Human Epidermal Melanocytes by Transduction with Two Combinations of Transcription Factors.

Objective: In order to generate induced Pluripotent Stem Cells (iPSCs) more efficiently, it is crucial to identify somatic cells that are easily accessible and possibly require fewer factors for conversion into iPSCs.

Methods: Human epidermal melanocytes were transduced with lentiviral vectors carrying 3 transcription factors (OCT-4, KLF-4 and c-MYC, 3F) or 4 transcription factors (OCT-4, KLF-4, c-MYC and SOX-2, 4F). Once the clones had formed, assays related to stem cell pluripotency, including alkaline phosphatase staining, DNA methylation levels, expression of stem cell markers and ultrastructure analysis were carried out.

Generation of Induced Pluripotent Stem Cells from Human Epidermal Keratinocytes.

Induced pluripotent stem cells (iPSCs) play an important role in cell replacement therapy. Several studies have shown that keratinocytes are promising reprogrammed cells. We easily and efficiently enriched epidermal stem cells by attaching them for a limited time in culture dishes.