keyword
MENU ▼
Read by QxMD icon Read
search

Keratinocytes

keyword
https://www.readbyqxmd.com/read/27922892/galectin-3-expression-in-benign-and-malignant-skin-diseases-with-epidermal-hyperplasia
#1
Ze-Xin Jiang, Guo-Zhen Tan, Zhen-Rui Shi, Yu-Ping Zhang, Yan-Fang Han, Liangchun Wang
Galectin-3 has been suggested relative to tumor genesis, progression, and metastasis in basal cell carcinoma and squamous cell carcinoma that are the most common skin cancers characterized by malignant epidermal proliferation. In this study, we evaluated galectin-3 expression in seborrheic keratosis, keratoacanthoma, and infectious diseases including verruca vulgaris, condyloma acuminatum, and chromoblastomycosis that are pathologically featured by benign epidermal proliferation. Galectin-3 expression was shown by immunohistochemical staining and quantified using the Image Pro Plus V6...
November 7, 2016: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/27920775/human-papillomavirus-downregulates-the-expression-of-ifitm1-and-ripk3-to-escape-from-ifn%C3%AE-and-tnf%C3%AE-mediated-antiproliferative-effects-and-necroptosis
#2
Wenbo Ma, Bart Tummers, Edith M G van Esch, Renske Goedemans, Cornelis J M Melief, Craig Meyers, Judith M Boer, Sjoerd H van der Burg
The clearance of a high-risk human papillomavirus (hrHPV) infection takes time and requires the local presence of a strong type 1 cytokine T cell response, suggesting that hrHPV has evolved mechanisms to resist this immune attack. Using an unique system for non, newly, and persistent hrHPV infection, we show that hrHPV infection renders keratinocytes (KCs) resistant to the antiproliferative- and necroptosis-inducing effects of IFNγ and TNFα. HrHPV-impaired necroptosis was associated with the upregulation of several methyltransferases, including EZH2, and the downregulation of RIPK3 expression...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27920272/mcpip1-regnase-1-restricts-il-17a-and-il-17c-dependent-skin-inflammation
#3
Leticia Monin, Johann E Gudjonsson, Erin E Childs, Nilesh Amatya, Xianying Xing, Akash H Verma, Bianca M Coleman, Abhishek V Garg, Meaghan Killeen, Alicia Mathers, Nicole L Ward, Sarah L Gaffen
The IL-17 family cytokines IL-17A and IL-17C drive the pathogenesis of psoriatic skin inflammation, and anti-IL-17A Abs were recently approved to treat human psoriasis. Little is known about mechanisms that restrain IL-17 cytokine-mediated signaling, particularly IL-17C. In this article, we show that the endoribonuclease MCP-1-induced protein 1 (MCPIP1; also known as regnase-1) is markedly upregulated in human psoriatic skin lesions. Similarly, MCPIP1 was overexpressed in the imiquimod (IMQ)-driven mouse model of cutaneous inflammation...
December 5, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27919950/development-of-a-novel-experimental-in-vitro-model-of-isothiocyanate-induced-apoptosis-in-human-malignant-melanoma-cells
#4
Theodora Mantso, Aristeidis P Sfakianos, Aithne Atkinson, Ioannis Anestopoulos, Melina Mitsiogianni, Sotirios Botaitis, Sebachedin Perente, Constantinos Simopoulos, Stavros Vasileiadis, Rodrigo Franco, Aglaia Pappa, Mihalis I Panayiotidis
BACKGROUND: Isothiocyanates are constituents of cruciferous vegetables which have been associated with reduced cancer risk partially through their ability to induce apoptosis in malignant cells including melanoma. MATERIALS AND METHODS: We have utilized human malignant melanoma (A375), epidermoid carcinoma (A431) and immortalized keratinocyte (HaCaT) cells exposed to various isothiocyanates, under different experimental conditions. RESULTS: An experimental in vitro model utilizing low isothiocyanate concentrations (0...
December 2016: Anticancer Research
https://www.readbyqxmd.com/read/27919618/electric-field-induced-suppression-of-pten-drives-epithelial-to-mesenchymal-transition-via-mtorc1-activation
#5
Tiantian Yan, Xupin Jiang, Xiaowei Guo, Wen Chen, Di Tang, Junhui Zhang, Xingyue Zhang, Dongxia Zhang, Qiong Zhang, Jiezhi Jia, Yuesheng Huang
BACKGROUND: Naturally occurring electric fields (EFs) are an intrinsic property of wounds. Endogenous EFs in skin wounds play critical roles in the dynamic and well-ordered biological process of wound healing. The epithelial-to-mesenchymal transition (EMT) allows keratinocytes to transition from sedentary cells to motile cells, facilitating wound healing. However, EMT-related studies have been performed without considering endogenous EFs. Thus, the relationship between electrical signals and the EMT remain elusive...
November 18, 2016: Journal of Dermatological Science
https://www.readbyqxmd.com/read/27919341/human-epidermal-stem-cells-role-in-adverse-skin-reactions-and-carcinogenesis-from-radiation
#6
Michèle T Martin, Adeline Vulin, Jolyon H Hendry
In human skin, keratinopoiesis is based on a functional hierarchy among keratinocytes, with rare slow-cycling stem cells responsible for the long-term maintenance of the tissue through their self-renewal potential, and more differentiated daughter progenitor cells actively cycling to permit epidermal renewal and turn-over every month. Skin is a radio-responsive tissue, developing all types of radiation damage and pathologies, including early tissue reactions such as dysplasia and denudation in epidermis, and later fibrosis in the dermis and acanthosis in epidermis, with the TGF-beta 1 pathway as a known master switch...
October 2016: Mutation Research
https://www.readbyqxmd.com/read/27918748/the-cxcl12-cxcr4-signaling-pathway-a-new-susceptibility-factor-in-human-papillomavirus-pathogenesis
#7
Floriane Meuris, Laetitia Carthagena, Agnieszka Jaracz-Ros, Françoise Gaudin, Pasquale Cutolo, Claire Deback, Yuezhen Xue, Françoise Thierry, John Doorbar, Françoise Bachelerie
The productive human papillomavirus (HPV) life cycle is tightly linked to the differentiation and cycling of keratinocytes. Deregulation of these processes and stimulation of cell proliferation by the action of viral oncoproteins and host cell factors underlies HPV-mediated carcinogenesis. Severe HPV infections characterize the wart, hypogammaglobulinemia, infection, and myelokathexis (WHIM) immunodeficiency syndrome, which is caused by gain-of-function mutations in the CXCR4 receptor for the CXCL12 chemokine, one of which is CXCR41013...
December 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27917823/3d-bioprinting-of-functional-human-skin-production-and-in-vivo-analysis
#8
Nieves Cubo, Marta Garcia, Juan F Del Cañizo, Diego Velasco, Jose L Jorcano
Significant progress has been made over the past 25 years in the development of in vitro-engineered substitutes that mimic human skin, either to be used as grafts for the replacement of lost skin, or for the establishment of in vitro human skin models. In this sense, laboratory-grown skin substitutes containing dermal and epidermal components offer a promising approach to skin engineering. In particular, a human plasma-based bilayered skin generated by our group, has been applied successfully to treat burns as well as traumatic and surgical wounds in a large number of patients in Spain...
December 5, 2016: Biofabrication
https://www.readbyqxmd.com/read/27917575/efficacy-and-tolerability-of-a-new-topical-nitric-zinc-preparation-for-difficult-to-treat-warts
#9
Camila K Janniger, Robert A Schwartz
Treating plantar, periungual, and external genital warts can be challenging. A prospective study from four centers in Italy evaluated 37 immunocompetent patients with single or multiple warts and treated each lesion with a nitric-zinc topical solution composed of organic and inorganic acids meant to devitalize tissue and destroy HPV DNA in infected keratinocytes. Thirty of the 37 patients had external genital warts, two had plantar warts, two had palm and finger warts, and three had subungual warts for a total of 55 lesions treated...
December 5, 2016: Dermatologic Therapy
https://www.readbyqxmd.com/read/27914933/differential-synthesis-and-release-of-il-18-and-il-18-binding-protein-from-human-platelets-and-their-implications-for-hiv-infection
#10
Ossama Allam, Suzanne Samarani, Mohammad-Ali Jenabian, Jean-Pierre Routy, Cecile Tremblay, Devendra Amre, Ali Ahmad
IL-18 is a pro-inflammatory cytokine belonging to the IL-1 family and is produced in the body from macrophages, epithelial and dendritic cells, keratinocytes, adrenal cortex etc. The cytokine is produced as an inactive precursor that is cleaved inside cells into its mature form by activated caspase 1, which exists as an inactive precursor in human cells and requires assembly of an inflammasomes for its activation. We show here for the first time that human platelets contain transcripts for the IL-18 gene. They synthesize the cytokine de novo, process and release it upon activation...
December 1, 2016: Cytokine
https://www.readbyqxmd.com/read/27914762/distribution-of-the-neuro-regulatory-peptide-galanin-in-the-human-eye
#11
Alexandra Kaser-Eichberger, Andrea Trost, Clemens Strohmaier, Barbara Bogner, Christian Runge, Daniela Bruckner, Bettina Hohberger, Anselm Jünemann, Barbara Kofler, Herbert A Reitsamer, Falk Schrödl
Galanin (GAL) is a neuro-regulatory peptide involved in many physiological and pathophysiological processes. While data of GAL origin/distribution in the human eye are rather fragmentary and since recently the presence of GAL-receptors in the normal human eye has been reported, we here systematically search for sources of ocular GAL in the human eye. Human eyes (n=14) were prepared for single- and double-immunohistochemistry of GAL and neurofilaments (NF). Cross- and flat-mount sections were achieved; confocal laser-scanning microscopy was used for documentation...
November 25, 2016: Neuropeptides
https://www.readbyqxmd.com/read/27913303/an-mtorc1-akt1-cathepsin-h-axis-controls-filaggrin-expression-and-processing-in-skin-a-novel-mechanism-for-skin-barrier-disruption-in-atopic-dermatitis
#12
Aishath S Naeem, Cristina Tommasi, Christian Cole, Stuart J Brown, Yanan Zhu, Benjamin Way, Saffron Ag Willis Owen, Miriam Moffatt, William O Cookson, John I Harper, Di Wl, Sara J Brown, Thomas Reinheckel, Ryan F L O'Shaughnessy
BACKGROUND: Filaggrin, encoded by the FLG gene, is an important component of the skin's barrier to the external environment and genetic defects in FLG strongly associate with Atopic Dermatitis (AD). However, not all AD patients have FLG mutations. OBJECTIVE: We hypothesised that these patients may possess other defects in filaggrin expression and processing, contributing to barrier disruption and AD, and therefore present novel therapeutic targets for this disease...
November 29, 2016: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/27912174/synthesis-and-cytostatic-properties-of-polyfunctionalized-furanoallocolchicinoids
#13
Iuliia A Gracheva, Iuliia V Voitovich, Vladimir I Faerman, Nikolay S Sitnikov, Ekaterina V Myrsikova, Hans-Gunther Schmalz, Elena V Svirshevskaya, Alexey Yu Fedorov
A series of furan-based allocolchicinoids was prepared from commercially available colchicine via a nine-step reaction sequence. Cytostatic activity, cell cycle arrest, apoptosis, tubulin and F-actin expression were studied in vitro in 2D and 3D cultures of normal and tumor epithelial keratinocytes, endothelial and mesenchymal cells. Among the prepared furanoallocolchicine analogues, 14a and 7a displayed the most pronounced anti-cancer activity. These compounds induced two types of effects: (a) cell cycle arrest in the G2/M phase as a direct consequence of effective tubulin binding (metaphase effect), and (b) pronounced cell stress (as evidenced by the overexpression of tubulin and F-actin), which was caused by the hyperpolarization of mitochondrial and lysosomal membranes (interphase effect)...
November 16, 2016: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/27912038/high-levels-of-chemokine-c-c-motif-ligand-20-in-human-milk-and-its-production-by-oral-keratinocytes
#14
Alan G Lourenço, Marilena C Komesu, Geraldo Duarte, Luiz A Del Ciampo, Marisa M Mussi-Pinhata, Aparecida Y Yamamoto
BACKGROUND: Chemokine C-C motif ligand 20 (CCL20) is implicated in the formation and function of mucosal lymphoid tissues. Although CCL20 is secreted by many normal human tissues, no studies have evaluated the presence of CCL20 in human milk or its production by oral keratinocytes stimulated by human milk. OBJECTIVE: To evaluate the presence of CCL20 in breast milk and verify CCL20 secretion in vitro by oral keratinocytes stimulated with human and bovine milk, as well as its possible association with breast milk lactoferrin levels...
December 2, 2016: Breastfeeding Medicine: the Official Journal of the Academy of Breastfeeding Medicine
https://www.readbyqxmd.com/read/27910904/melanosome-transfer-to-keratinocyte-in-the-chicken-embryonic-skin-is-mediated-by-vesicle-release-associated-with-rho-regulated-membrane-blebbing
#15
Ryosuke Tadokoro, Hidetaka Murai, Ken-Ichiro Sakai, Takahiro Okui, Yasuhiro Yokota, Yoshiko Takahashi
During skin pigmentation in amniotes, melanin synthesized in the melanocyte is transferred to keratinocytes by a particle called the melanosome. Previous studies, mostly using dissociated cultured cells, have proposed several different models that explain how the melanosome transfer is achieved. Here, using a technique that labels the plasma membrane of melanocytes within a three-dimensional system that mimics natural tissues, we have visualized the plasma membrane of melanocytes with EGFP in chicken embryonic skin...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27910776/molecular-pathology-of-malignant-transformation-of-oral-submucous-fibrosis
#16
Amit Chattopadhyay, Jay Gopal Ray
Oral submucous fibrosis (OSF) is prevalent mostly in Southeast Asia, particularly in the Indian subcontinent. Chewing betel nuts and betel leaves, with or without tobacco, has been associated with OSF. Betel quid contents including guvacine, arecoline, guvacoline, arecaidine, and chavibetol are considered to play an important part in the occurrence of OSF. Transformation of OSF to squamous cell carcinoma (SCC) is variable, but up to 13% conversion of OSF to SCC has been reported. Various genetic and molecular mechanisms impact the malignant transformation of OSF, causing changes in the cell cycle, DNA, keratinocytes, and keratin; tumor-cell proliferation and survival; angiogenesis; fibrosis through epithelial-mesenchymal transitions (EMTs), and tissue hypoxia...
2016: Journal of Environmental Pathology, Toxicology and Oncology
https://www.readbyqxmd.com/read/27910163/serum-amyloid-a-an-acute-phase-protein-stimulates-proliferative-and-proinflammatory-responses-of-keratinocytes
#17
Ning Yu, Shujie Zhang, Jiajing Lu, Ying Li, Xuemei Yi, Li Tang, Lina Su, Yangfeng Ding
OBJECTIVES: Serum amyloid A (SAA), an acute phase protein, is highly expressed in psoriatic lesions but its function is not fully understood. The aim of this study was to explore its role in activation of keratinocytes. MATERIALS AND METHODS: Real-time PCR and immunofluorescence were performed to examine SAA expression in imiquimod (IMQ)-induced psoriasis-like mice. In vivo function of SAA was examined by treating psoriasis-like mice with SAA neutralising antibody...
December 2, 2016: Cell Proliferation
https://www.readbyqxmd.com/read/27910159/staphylococcus-aureus-derived-membrane-vesicles-exacerbate-skin-inflammation-in-atopic-dermatitis
#18
S H Jun, J H Lee, S I Kim, C W Choi, T I Park, H R Jung, J W Cho, S H Kim, J C Lee
BACKGROUND: Skin colonization or infection with Staphylococcus aureus is known to trigger aggravation of atopic dermatitis (AD). However, the exact mechanisms by which S. aureus can worsen AD are unknown. OBJECTIVE: We investigated whether and how S. aureus-derived membrane vesicles (MVs) contribute to worsening of AD. METHODS: Immunohistochemical and immunoelectron microscopic analyses were performed to detect staphylococcal protein A (SPA) in the epidermis of AD lesions...
November 5, 2016: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/27909303/conditional-knockout-of-n-wasp-in-mouse-fibroblast-caused-keratinocyte-hyper-proliferation-and-enhanced-wound-closure
#19
Neeraj Jain, Pazhanichamy Kalailingam, Kai Wei Tan, Hui Bing Tan, Ming Keat Sng, Jeremy Soon Kiat Chan, Nguan Soon Tan, Thirumaran Thanabalu
Neural-Wiskott Aldrich Syndrome Protein (N-WASP) is expressed ubiquitously, regulates actin polymerization and is essential during mouse development. We have previously shown that N-WASP is critical for cell-ECM adhesion in fibroblasts. To characterize the role of N-WASP in fibroblast for skin development, we generated a conditional knockout mouse model in which fibroblast N-WASP was ablated using the Cre recombinase driven by Fibroblast Specific Protein promoter (Fsp-Cre). N-WASP(FKO) (N-WASP(fl/fl); Fsp-cre) were born following Mendelian genetics, survived without any visible abnormalities for more than 1 year and were sexually reproductive, suggesting that expression of N-WASP in fibroblast is not critical for survival under laboratory conditions...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27908934/gata6-promotes-hair-follicle-progenitor-cell-renewal-by-genome-maintenance-during-proliferation
#20
Alex B Wang, Ying V Zhang, Tudorita Tumbar
Cell proliferation is essential to rapid tissue growth and repair, but can result in replication-associated genome damage. Here, we implicate the transcription factor Gata6 in adult mouse hair follicle regeneration where it controls the renewal of rapidly proliferating epithelial (matrix) progenitors and hence the extent of production of terminally differentiated lineages. We find that Gata6 protects against DNA damage associated with proliferation, thus preventing cell cycle arrest and apoptosis. Furthermore, we show that in vivo Gata6 stimulates EDA-receptor signaling adaptor Edaradd level and NF-κB pathway activation, known to be important for DNA damage repair and stress response in general and for hair follicle growth in particular...
December 1, 2016: EMBO Journal
keyword
keyword
11066
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"