Dentistry Commons^™

Interactions Between Silica And Titanium Nanoparticles And Oral And Gastrointestinal Epithelia: Consequences For Inflammatory Diseases And Cancer, Cassio Luiz Coutinho Almeida-Da-Silva, Leticia Ferreira Cabido, Wei Chun Chin, Ge Wang, David M. Ojcius, Changqing Li

All Dugoni School of Dentistry Faculty Articles

Engineered nanoparticles (NPs) composed of elements such as silica and titanium, smaller than 100 nm in diameter and their aggregates, are found in consumer products such as cosmetics, food, antimicrobials and drug delivery systems, and oral health products such as toothpaste and dental materials. They may also interact accidently with epithelial tissues in the intestines and oral cavity, where they can aggregate into larger particles and induce inflammation through pathways such as inflammasome activation. Persistent inflammation can lead to precancerous lesions. Both the particles and lesions are difficult to detect in biopsies, especially in clinical settings that screen large numbers …

Temperature And Ph-Responsive Nano-Hydrogel Drug Delivery System Based On Lysine-Modified Poly (Vinylcaprolactam), Fatemeh Farjadian, Somayeh Rezaeifard, Mahsa Naeimi, Sahar Ghasemi, Soliman Mohammadi-Samani, Mark E. Welland, Lobat Tayebi

School of Dentistry Faculty Research and Publications

Background: Smart materials capable of responding to external stimuli are noteworthy candidates in designing drug delivery systems. In many of the recent research, temperature and pH have been recognized as the main stimulating factors in designing systems for anti-cancer drugs delivery systems.

Purpose: In this study, thermo and pH-responsive character of a nano-carrier drug delivery platform based on lysine modified poly (vinylcaprolactam) hydrogel conjugated with doxorubicin was assessed.

Methods: Poly (vinylcaprolactam) cross-linked with poly (ethyleneglycol) diacrylate was prepared via RAFT polymerization, and the prepared structure was linked with lysine through ring-opening. The anti-cancer drug doxorubicin, was linked to lysine moiety …

Pretreatment With A Heat-Killed Probiotic Modulates The Nlrp3 Inflammasome And Attenuates Colitis-Associated Colorectal Cancer In Mice, I. Che Chung, Chun Nan Ouyang, Sheng Ning Yuan, Hsin Chung Lin, Kuo Yang Huang, Pao Shu Wu, Chia Yuan Liu, Kuen Jou Tsai, Lai Keng Loi, Yu Jen Chen, An Ko Chung, David M. Ojcius, Yu Sun Chang, Lih Chyang Chen

All Dugoni School of Dentistry Faculty Articles

© 2019 by the authors. Licensee MDPI, Basel, Switzerland. Colorectal cancer (CRC) is one of the most common malignancies worldwide. Inflammation contributes to cancer development and inflammatory bowel disease is an important risk factor for CRC. The aim of this study is to assess whether a widely used probiotic Enterococcus faecalis can modulate the NLRP3 inflammasome and protect against colitis and colitis-associated CRC. We studied the effect of heat-killed cells of E. faecalis on NLRP3 inflammasome activation in THP-1-derived macrophages. Pretreatment of E. faecalis or NLRP3 siRNA can inhibit NLRP3 inflammasome activation in macrophages in response to fecal content or …

Molecular Mechanisms Of Squamous Cell Carcinoma Tumor Stem Cell Creation Via High Nitric Oxide (Hno) Adaptation, Niresh T. Kuganeswaran '16, Krishi Korrapati '17, Thomas Wan '16, Timothy Tamas, James A. Radosevich

Student Publications & Research

Cancer relapse or recurrence is defined as the return of cancer or its signs/symptoms after a period of improvement. Surgery may not remove all cancer cells and leave behind a few which cannot be detected by scans or other tests. It is also possible that some tumor cells are resistant to chemotherapy or radiation. Although many cancer cells are killed by these treatments, there may exist a few which contain a different genetic makeup which allows them to survive. These hypermalignant cancer cells, or cancer stem cells (CSCs), have been associated with causing cancer relapse. It has also been predicted …

Role Of Pseudogenes In Cancer Stem Creation Via High Nitric Oxide (Hno) Adaptation, Krishi Korrapati '17, Niresh T. Kuganeswaran '16, Thomas Wan '16, Timothy Tamas, James A. Radosevich

Student Publications & Research

Gene chip analysis of ten HNO adapted cell lines (Squamous cells: SCC-016, SCC-040, SCC-056, SCC-114, SCC-116; Adenocarcinomas: A549, BT20, Hs578, MCF7, and T47D) was carried out. Known pseudogenes were identified in each line, as well as their coding counterparts.

The adenocarcinoma cell lines had no up regulated pseudogenes, while they had the following down regulated pseudogenes: RP6-159A1.2, RP11-255N24.3, AC004490.1, LDHBP, RP11-572H4.2. The squamous cell carcinomas (SCCs) had the following up regulated pseudogenes: RPL37AP1, AC138972.1, RP11-641D5.1, AC005534.6, AC022431.1, RPL26P12, and they had these down regulated pseudogenes: RP6-159A1.2, RP11-255N24.3, RBMXP1, RP11-20O23.1, RP11-551G24.2. All cell lines adhered to the hypothesis that an increase …

Management Of Oral Mucositis In Patients With Cancer, Rajesh V. Lalla, Douglas E. Peterson

UCHC Articles - Research

Oral mucositis refers to erythematous and ulcerative lesions of the oral mucosa observed in patients with cancer being treated with chemotherapy, and/or with radiation therapy to fields involving the oral cavity. Lesions of oral mucositis are often very painful and compromise nutrition and oral hygiene as well as increase risk for local and systemic infection. Mucositis can also involve other areas of the alimentary tract; for example, gastrointestinal (GI) mucositis can manifest as diarrhea. Thus, mucositis is a highly significant and sometimes dose-limiting complication of cancer therapy.

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Nasa Light Emitting Diode Medical Applications From Deep Space To Deep Sea, Harry T. Whelan, Ellen V. Buchmann, Noel T. Whelan, Scott G. Turner, Vita Cevenini, Helen Stinson, Ron Ignatius, Todd Martin, Joan Cwiklinski, Glenn A. Meyer, Brian D. Hodgson, Lisa J. Gould, Mary P. Kane, Gina Chen, James Caviness

School of Dentistry Faculty Research and Publications

This work is supported and managed through the NASA Marshall Space Flight Center-SBIR Program. LED-technology developed for NASA plant growth experiments in space shows promise for delivering light deep into tissues of the body to promote wound healing and human tissue growth. We present the results of LED-treatment of cells grown in culture and the effects of LEDs on patients’ chronic and acute wounds. LED-technology is also biologically optimal for photodynamic therapy of cancer and we discuss our successes using LEDs in conjunction with light-activated chemotherapeutic drugs.