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https://www.readbyqxmd.com/read/28338203/mir-155-regulates-oral-squamous-cell-carcinoma-tca8113-cell-proliferation-cycle-and-apoptosis-via-regulating-p27kip1
#1
S Fu, H-H Chen, P Cheng, C-B Zhang, Y Wu
OBJECTIVE: P27Kip1 is the one of the negative regulators of the cell cycle that plays an important role in regulating cell cycle and inhibiting cell proliferation by restraining cell in G1 phase. P27Kip1 downregulation maybe related to the occurrence of oral squamous cell carcinoma (OSCC). It was found that miR-155 significantly upregulated in OSCC tissue. Bioinformatics analysis revealed that miR-155 may bind with the 3'-UTR of p27Kip1. This study investigated the role of miR-155 in regulating p27Kip1 and affecting Tca8113 cell proliferation, cycle, and apoptosis...
March 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28337874/the-biomedical-aspects-of-oral-mucosal-epithelial-cell-culture-in-mammals
#2
A Bryja, M Dyszkiewicz-Konwińska, J Budna, W Kranc, A Chachuła, S Borys, S Ciesiółka, J Sokalski, M Prylinski, D Bukowska, P Antosik, M Bruska, M Nowicki, M Zabel, B Kempisty
In recent years, there has been a growing interest in epithelial cell tissue culture, particularly oral mucosa and its application utilizing in vitro cell culture in medicine. This involves tests using animal models to better understand oral mucosa function, and the differences in its construction in various animal models. The use of buccal pouch mucosal cell culture provides insight into the processes of trans mucosal transport and regeneration of the oral epithelium. The processes associated with epithelium regeneration is the base for stem cell research and/or oral cancer investigation...
January 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28337218/effect-of-transplantation-of-bone-marrow-derived-mesenchymal-stem-cells-and-platelets-rich-plasma-on-experimental-model-of-radiation-induced-oral-mucosal-injury-in-albino-rats
#3
Basma Elsaadany, Samar El Kholy, Dalia El Rouby, Laila Rashed, Tarek Shouman
Normal tissue damage following radiotherapy is still a major problem in cancer treatment. Therefore, the current work aimed at exploring the possible role of systemically injected bone marrow derived mesenchymal stem cells (BM-MSCs) and/or locally injected platelet rich plasma (PRP) in ameliorating the side effects of ionizing radiation on the rat's tongue. Twelve rats served as control group (N) and 48 rats received a single radiation dose of 13 Gy to the head and neck region; then, they were equally divided into 4 experimental groups: irradiated only (C), irradiated + MSCs (S), irradiated + (PRP) (P), and combined group (PS)...
2017: International Journal of Dentistry
https://www.readbyqxmd.com/read/28337201/phenotype-and-tissue-residency-of-lymphocytes-in-the-murine-oral-mucosa
#4
Joo-Young Park, Hyunsoo Chung, Youngnim Choi, Jung-Hyun Park
The oral mucosa is a critical barrier tissue that harbors a series of distinct immune cell subsets. Immune surveillance in the oral mucosa is important for both local and systemic immunity because the oral cavity is a heavily utilized route of pathogen entry and also serves as site of pathogen propagation. Nonetheless, composition and phenotype of the lymphocyte pool in the oral mucosa have remained poorly characterized. Utilizing a newly established protocol for mucosal immune cell isolation, here, we report that the oral mucosa features a unique cellular composition of immune cells, which differed not only from secondary lymphoid organs but also from mucosal tissues in the gut and lung...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28335614/therapeutic-targeting-of-protein-kinase-ck2-gene-expression-in-feline-oral-squamous-cell-carcinoma-a-naturally-occurring-large-animal-model-of-head-and-neck-cancer
#5
Claire Cannon, Janeen Trembley, Betsy Kren, Gretchen Unger, M Gerard O'Sullivan, Ingrid Cornax, Jaime Modiano, Khalil Ahmed
Protein kinase CK2 (CK2) is a highly promising target for cancer therapy and anti-CK2 gene expression therapy has shown effectiveness in rodent models of human head and neck cancer (HNC). To date, there has been no large animal model of cancer in which to further explore anti-CK2 therapies. Feline oral squamous cell carcinoma (FOSCC) has been proposed as a large animal model for human HNC and we have previously shown that CK2 is a rational target in FOSCC. We hypothesized that a novel tenfibgen coated tumor-specific nanocapsule carrying RNAi oligonucleotides targeting feline CK2α and CK2α' (TBG-RNAi-fCK2αα') would be safe in cats with FOSCC...
March 23, 2017: Human Gene Therapy. Clinical Development
https://www.readbyqxmd.com/read/28335378/bioavailability-of-microencapsulated-iron-from-fortified-bread-assessed-using-piglet-model
#6
Malgorzata A Bryszewska, Luca Laghi, Augusta Zannoni, Andrea Gianotti, Francesca Barone, Danielle L Taneyo Saa, Maria L Bacci, Domenico Ventrella, Monica Forni
The aim of this study was to investigate the influence of oral iron supplementation, in the form of fortified breads, on the growth performance, health, iron status parameters, and fecal metabolome of anemic piglets. A study was conducted on 24 hybrid (Large White × Landrace × Duroc) piglets. From day 44, the post-natal 12 piglets were supplemented with 100 g of one of two experimental breads, each fortified with 21 mg of ferrous sulphate, either encapsulated or not. After one week of oral supplementation, hematological parameters (hematocrit value, hemoglobin, and red blood cells) showed statistically significant differences (p ≤ 0...
March 13, 2017: Nutrients
https://www.readbyqxmd.com/read/28335320/cellular-interactions-and-formation-of-an-epithelial-nanocoating-like-barrier-with-mesoporous-silica-nanoparticles
#7
Xuan Li, Ka Yan Pang, Tsz Wing Ng, Ping Chung Leung, Cheng Fei Zhang, Ken Cham-Fai Leung, Lijian Jin
Oral mucosa as the front-line barrier in the mouth is constantly exposed to a complex microenvironment with multitudinous microbes. In this study, the interactions of mesoporous silica nanoparticles (MSNs) with primary human gingival epithelial cells were analyzed for up to 72 h, and their diffusion capacity in the reconstructed human gingival epithelia (RHGE) and porcine ear skin models was further assessed at 24 h. It was found that the synthesized fluorescent mesoporous silica nanoparticles (RITC-NPs) with low cytotoxicity could be uptaken, degraded, and/or excreted by the human gingival epithelial cells...
October 27, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28329585/report-of-rare-case-of-dermatofibrosarcoma-protuberans-in-the-buccal-mucosa-review-of-diagnostic-histopathological-and-immunohistochemical-criteria
#8
Amanda Katarinny Goes Gonzaga, Angélica Lopes Cordeiro Mandú, Alexandre Oliveira Sales, Ana Miryam Costa Medeiros, Rodrigo Rodrigues Rodrigues, Patrícia Teixeira Oliveira, Adriano Rocha Germano, Éricka Janine Dantas Silveira
Dermatofibrosarcoma protuberans (DFSP) is an uncommon intermediate-grade soft tissue sarcoma. The tumor is found preferentially on the trunk, whereas the head and neck region are affected in only 10% to 15% of cases. We report the case of a 44-year-old woman with a 5-month history of an asymptomatic, firm, yellow nodule in the mucosa of the right cheek measuring 2.5 cm. The clinical diagnosis was lipoma and an excisional biopsy was obtained. Histopathological analysis revealed a proliferation of spindle-shaped mesenchymal cells arranged in interlacing fascicles amidst fibrous stroma...
October 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28326926/potential-protein-biomarkers-for-burning-mouth-syndrome-discovered-by-quantitative-proteomics
#9
Eoon Hye Ji, Cynthia Diep, Tong Liu, Hong Li, Robert Merrill, Diana Messadi, Shen Hu
Burning mouth syndrome (BMS) is a chronic pain disorder characterized by severe burning sensation in normal looking oral mucosa. Diagnosis of BMS remains to be a challenge to oral healthcare professionals because the method for definite diagnosis is still uncertain. In this study, a quantitative saliva proteomic analysis was performed in order to identify target proteins in BMS patients' saliva that may be used as biomarkers for simple, non-invasive detection of the disease. By using isobaric tags for relative and absolute quantitation labeling and liquid chromatography-tandem mass spectrometry to quantify 1130 saliva proteins between BMS patients and healthy control subjects, we found that 50 proteins were significantly changed in the BMS patients when compared to the healthy control subjects ( p ≤ 0...
January 2017: Molecular Pain
https://www.readbyqxmd.com/read/28326698/-construction-of-human-mucosa-oral-epithelial-cell-lines-overexpressing-telomerase-reverse-transcriptase-gene-mediated-by-lentivirus
#10
Zeng Sa, Qin Xiaodong, He Xiangyi, Che Chunxiao, Zhang Xiao, Xie Siyu, Sun Guijun, Wang Lihe
OBJECTIVE: To construct a cell line of oral mucosa epithelial cells that stably express human telomerase reverse transcriptase (hTERT) by lentiviral vectors, approaches for the establishment of stable and efficient immortalized oral mucosa epithelial cell lines were explored. METHODS: Whole RNA was extracted from 293T cells. The hTERT gene was amplified by polymerase chain reaction (PCR) and cloned into the lentiviral vector as pLVX-puro-hTERT. The lentivirus particles were successfully packaged and used to infect primary oral epithelial cells...
October 1, 2016: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/28326646/effect-of-tempol-on-the-prevention-of-irradiation-induced-mucositisin-miniature-pigs
#11
Liang Hu, Yijuan Wang, Ana P Cotrim, Zhao Zhu, Runtao Gao, Changyu Zheng, Corinne M Goldsmith, Luyuan Jin, Chunmei Zhang, James B Mitchell, Bruce J Baum, Songlin Wang
OBJECTIVE: The goals of this study were to (i) establish a useful miniature pig (minipig) model for irradiation-induced oral mucositis and (ii) evaluate the effect of Tempol to prevent its development. METHODS AND MATERIALS: Minipigs were irradiated with 6Gy for 5 consecutive days targeting the entire oral cavity. To prevent radiation damage minipigs were treated with 30 mg/kg Tempol 10 minutes before irradiation (n=4), while, the radiation-alone group was similarly injected with saline (n=4)...
March 22, 2017: Oral Diseases
https://www.readbyqxmd.com/read/28326594/hypoacetylation-of-acetyl-histone-h3-h3k9ac-as-marker-of-poor-prognosis-in-oral-cancer
#12
Liana Preto Webber, Vivian Petersen Wagner, Marina Curra, Pablo Agustin Vargas, Luise Meurer, Vinícius Coelho Carrard, Cristiane Helena Squarize, Rogério Moraes Castilho, Manoela Domingues Martins
AIMS: Epigenetics refers to changes in cell characteristics that occur independently of modifications to the DNA sequence. Oral carcinogenesis is influenced by modifications in epigenetic mechanisms, including changes in histones, which are proteins that support chromatin remodeling for the dynamic regulation of gene expression and silencing. The dysregulation of histone acetylation can lead to the uncontrolled activity of different genes, thereby triggering events associated with malignant transformation...
March 22, 2017: Histopathology
https://www.readbyqxmd.com/read/28325761/the-aryl-hydrocarbon-receptor-governs-epithelial-cell-invasion-during-oropharyngeal-candidiasis
#13
Norma V Solis, Marc Swidergall, Vincent M Bruno, Sarah L Gaffen, Scott G Filler
Oropharyngeal candidiasis (OPC), caused predominantly by Candida albicans, is a prevalent infection in patients with advanced AIDS, defects in Th17 immunity, and head and neck cancer. A characteristic feature of OPC is fungal invasion of the oral epithelial cells. One mechanism by which C. albicans hyphae can invade oral epithelial cells is by expressing the Als3 and Ssa1 invasins that interact with the epidermal growth factor receptor (EGFR) on epithelial cells and stimulate endocytosis of the organism. However, the signaling pathways that function downstream of EGFR and mediate C...
March 21, 2017: MBio
https://www.readbyqxmd.com/read/28325515/-a-new-case-of-rowell-s-syndrome
#14
C Schissler, S Banea, M-C Tortel, A Mahé
INTRODUCTION: This article introduces a new case of Rowell's syndrome, a controversial entity defined by the association of lupus erythematosus and erythema multiforme. OBSERVATION: A 43-year-old woman was diagnosed with lupus erythematosus induced by esomeprazole. Because her eruption did not improve after withdrawal of the drug, hydroxychloroquine was administered. Two weeks later, the patient described new annular lesions on her chest and arms, both erosive and crusted, and some had a target-like appearance...
March 18, 2017: Annales de Dermatologie et de Vénéréologie
https://www.readbyqxmd.com/read/28322362/immunopathogenic-oral-diseases-%C3%A2-an-overview-focusing-on-pemphigus-vulgaris-and-mucous-membrane-pemphigoid
#15
Liviu Feller, Raoul Ballyram, Razia Ag Khammissa, Mario Altini, Johan Lemmer
Pemphigus vulgaris, mucosal pemphigoid (mucous membrane pemphigoid), lichen planus, discoid lupus erythematosus and erythema multiforme are a group of immune-mediated mucocutaneous disorders characterised clinically by the formation of blisters, erosions or ulcers. The oral mucosa is often affected, and sometimes the disease is limited to the mouth. The target antigens, autoreactive immune responses, microscopic features, treatment and prognosis vary from one disease to the other. Treatment aims to eliminate exogenous risk factors, suppress the pathogenic immuno-inflammatory reactions, promote healing and prevent infection...
March 20, 2017: Oral Health & Preventive Dentistry
https://www.readbyqxmd.com/read/28322333/squamous-epitheliotropism-of-enterovirus-a71-in-human-epidermis-and-oral-mucosa
#16
Win Kyaw Phyu, Kien Chai Ong, Chee Kwan Kong, Abdul Khalil Alizan, Tindivanam Muthurangam Ramanujam, Kum Thong Wong
Hand-foot-and-mouth disease is a self-limiting paediatric infectious disease commonly caused by Enterovirus A71 (Genus: Enterovirus, Family: Picornaviridae). Typical lesions in and around the hands, feet, oral cavity and other places may rarely be complicated by acute flaccid paralysis and acute encephalomyelitis. Although virus is readily cultured from skin vesicles and oral secretions, the cellular target/s of Enterovirus A71 in human skin and oral mucosa are unknown. In Enterovirus A71-infected human skin and oral mucosa organotypic cultures derived from the prepuce and lip biopsies, focal viral antigens and viral RNA were localized to cytoplasm of epidermal and mucosal squamous cells as early as 2 days post-infection...
March 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28322198/multiple-and-recurrent-squamous-cell-carcinoma-of-the-oral-cavity-after-graft-versus-host-disease
#17
Xiu Hong Weng, Yu Zhen Xing, Bo Cheng
Oral squamous cell carcinoma (OSCC) is one of the most common secondary solid tumors in patients who have undergone hematopoietic stem cell transplantation (HSCT). However, according to previous reports, multiple and recurrent OSCC is very rare. The presented case shows the susceptibility to the development of secondary malignancies, particularly oral cancer, of patients who present with chronic graft-versus-host disease after HSCT. OSCC after HSCT appears to be more invasive and has a tendency to recur, with a poor prognosis...
February 22, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28322164/solubilization-and-enhancement-of-ex-vivo-vaginal-delivery-of-progesterone-using-solid-dispersions-inclusion-complexes-and-micellar-solubilization
#18
Abeer S Hassan, Ghareb M Soliman, Mona M El-Mahdy, Gamal El-Din A El-Gindy
Progesterone (PG), a natural female sex hormone is used clinically in menopausal hormone replacement therapy and to control reproductive functions. Its very limited aqueous solubility of 7 µg/ml results in reduced oral bioavailability and low patient compliance when administered in high doses. The aim of this study was to enhance PG aqueous solubility and vaginal delivery using solid dispersion, inclusion complex and micellar solubilization techniques. PG solid dispersions and inclusion complexes were prepared by solvent evaporation method using different polymers, such as cyclodextrins, polyvinyl pyrrolidone (PVP), poly (ethylene glycol) 6000, Pluronic® F-127 and Pluronic® F-68...
March 20, 2017: Current Drug Delivery
https://www.readbyqxmd.com/read/28321216/facilitated-peptide-transport-via-the-mucosal-epithelium-impact-on-tolerance-induction
#19
Elisabeth E Kenngott, Jennifer Pfeil, Ute Hoffmann, Uta Lauer, Anja A Kühl, Anne Rigby, Anton Pernthaner, Alf Hamann
A hallmark of autoimmunity is the breakdown of tolerance and generation of effector responses against self-antigens. Re-establishment of tolerance in autoimmune disorders was always the most desired treatment option; however, despite many efforts, clinical trials have been largely unsuccessful. This also applies to the generation of oral tolerance, which seems to be a default response type of the mucosa-associated lymphoid tissues to harmless antigens. In this study, we report improved efficacy of oral tolerance induction by coupling antigen with the newly identified mucosal carrier peptide 13C...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28320456/thiolation-of-arabinoxylan-and-its-application-in-the-fabrication-of-controlled-release-mucoadhesive-oral-films
#20
Muhammad Hanif, Muhammad Zaman
BACKGROUND: Mucoadhesion is an important property that helps oral drug delivery system to remain attached with buccal mucosa and hence to improve the delivery of the drug. The current study was designed to achieve the thiol modification of Arabinoxylan (ARX) and to develop a mucoadhesive oral film for the improved delivery of tizanidine hydrochloride (TZN HCl). METHOD: Synthesis of thiolated arabinoxylan (TARX) was accomplished by esterification of ARX with thioglycolic acid (TGA)...
March 20, 2017: Daru: Journal of Faculty of Pharmacy, Tehran University of Medical Sciences
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