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https://www.readbyqxmd.com/read/28643933/oncologic-doses-of-zoledronic-acid-induce-site-specific-suppression-of-bone-modelling-in-rice-rats
#1
C R Exposto, U Oz, J S Callard, M J Allen, H Khurana, A D' Atri, X Mo, S A Fernandez, D N Tatakis, K Edmonds, P M Westgate, S S Huja
OBJECTIVES: To examine the effect of zoledronic acid (ZOL) on cortical bone modelling and healing of extraction sockets in the jaw bones of a rodent model. We hypothesized ZOL suppresses both the bone formation in the modelling mode in the jaw bones and alters the extraction site healing. MATERIAL & METHODS: Rice rats were administered saline solution and two dose regimens of ZOL: 0.1 mg/kg, twice a week, for 4 weeks (n=17, saline=8 & ZOL=9) and a higher dose of 0...
June 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28643923/micro-anatomical-responses-in-periodontal-complexes-of-mice-to-calibrated-orthodontic-forces-on-the-crown
#2
A Pal, L Chen, L Yang, F Yang, B Meng, A H Jheon, S P Ho
OBJECTIVE: Correlating mechanical forces with quantifiable physical changes in the dentoalveolar complex. SETTING AND SAMPLE POPULATION: Male 6-week C57BL/6 mice (N=3), micro X-ray-computed tomography; post-analysis software to extract physical changes in periodontal ligament (PDL)-space. MATERIALS AND METHODS: Silicone-elastic bands were placed between maxillary molars for 1 week, with the contralateral side as internal control. Average displacements between crowns and roots, and changes in PDL-spaces were evaluated by registering X-ray tomograms of experimental and control hemi-maxillae...
June 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28643909/the-fate-of-osterix-expressing-mesenchymal-cells-in-dental-root-formation-and-maintenance
#3
A Takahashi, N Ono, W Ono
OBJECTIVES: Osterix (Osx)-expressing mesenchymal cells are progenitors for tooth root forming cells. The aim of this study was to reveal the fates of Osx-expressing cells during and after root formation using a lineage tracing experiment. MATERIAL AND METHODS: To reveal the fates of Osx-expressing dental mesenchymal progenitors, we took advantage of tamoxifen-inducible Cre reporter system. Osx-creER; R26R-tdTomato mice received tamoxifen (0.1 mg/body) at postnatal day 3 (P3)...
June 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28631301/prevention-of-lupus-nephritis-development-in-nzb-nzw-mice-by-selective-blockade-of-cd28
#4
Laetitia Laurent, Awena Lefur, Rozenn Le Bloas, Mélanie Néel, Caroline Mary, Anne Moreau, Nicolas Poirier, Bernard Vanhove, Fadi Fakhouri
Systemic Lupus Erythematosus (SLE) is a chronic systemic inflammatory disease. Autoantibodies (autoAbs) against double-stranded DNA (ds DNA), the hallmark of lupus, are produced and maintained by the interaction between auto-reactive B cells and CD4(+) T cells. This interplay is controlled by the CD28/CD80-86/CTLA-4 axis. Here we investigated whether selective blockade of CD28-CD80/86 co-stimulatory interactions abrogates lupus nephritis development in a murine model of SLE. To this aim, NZB/NZW F1 mice were treated for 3 months, either with an anti-CD28 Fab' fragment or a control Fab'-IgG...
June 20, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28612428/outcomes-and-prognostic-factors-that-influence-the-success-of-tooth-autotransplantation-in-children-and-adolescents
#5
Vasiliki Kafourou, Huei Jinn Tong, Peter Day, Nadine Houghton, R James Spencer, Monty Duggal
BACKGROUND/AIM: Tooth autotransplantation has been advocated for replacement of missing teeth, or teeth that are unsuitable for restoration. The aim of this study was to investigate the outcomes and prognostic factors that influenced the success of tooth transplantation in a paediatric population. MATERIALS AND METHODS: Data was extracted from the records of 75 patients (89 teeth). Demographic and prognostic factors were recorded and analyzed for the clinical and radiographic outcomes for periodontal ligament (PDL) and pulp healing of transplanted teeth...
June 14, 2017: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/28604262/current-evidence-on-the-socket-shield-technique-a-systematic-review
#6
Amit Srikant Gharpure, Neel B Bhatavadekar
The recently popularised socket-shield technique involves intentional retention of a section of the remnant root at the time of immediate implant placement to preserve the buccal/proximal bone from resorption. The objective of this systematic review was to assess the literature available on the socket-shield technique and weigh its biological plausibility and long-term clinical prognosis. A Systematic Search was performed in PubMed-Medline, Embase, Web of Knowledge, Google Scholar and Cochrane Central for clinical/ animal studies up to April 2017...
June 12, 2017: Journal of Oral Implantology
https://www.readbyqxmd.com/read/28597116/secretory-leukocyte-protease-inhibitor-regulates-human-periodontal-ligament-cell-production-of-pro-inflammatory-cytokines
#7
Daniel Svensson, Alexandra Aidoukovitch, Emma Anders, Daniel Jönsson, Daniel Nebel, Bengt-Olof Nilsson
OBJECTIVE: Regulation of immune-like cell properties of periodontal ligament (PDL) cells is not understood. We investigate the importance of secretory leukocyte protease inhibitor (SLPI) for production of pro-inflammatory cytokines in human PDL cells. MATERIALS AND METHODS: PDL cells were isolated from teeth extracted for orthodontic reasons. Cellular location of SLPI was investigated by immunocytochemistry. Cytokine transcript and protein expression were assessed by quantitative real-time RT-PCR and Western blotting...
June 8, 2017: Inflammation Research: Official Journal of the European Histamine Research Society ... [et Al.]
https://www.readbyqxmd.com/read/28590058/transgelin-mediates-transforming-growth-factor-%C3%AE-1-induced-proliferation-of-human-periodontal-ligament-cells
#8
H Mitarai, N Wada, D Hasegawa, S Yoshida, M Sonoda, A Tomokiyo, S Hamano, S Serita, H Mizumachi, H Maeda
BACKGROUND AND OBJECTIVE: Human periodontal ligament cells (HPDLCs) express transforming growth factor-β1 (TGF-β1) that regulates differentiation and proliferation, and plays key roles in homeostasis of PDL tissue. Transgelin is a cytoskeleton-associated protein with an Smad-binding element in its gene promoter region. In this study, we examined the localization and potential function of transgelin in PDL tissue and cells. MATERIAL AND METHODS: Microarray analysis of HPDLC lines (2-14, 2-23 and 2-52) was performed...
June 7, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28578892/proteome-expression-in-human-periodontal-ligament-after-delayed-hypothermic-preservation
#9
Sin-Yeon Cho, Junhee Park, Won-Yoon Chung, Euiseong Kim, Il-Young Jung, Seong-Ho Choi, Kwang-Kyun Park, Seung-Jong Lee
INTRODUCTION: Previous occasional successes after delayed replantation suggest that the presence of viable cells may not be the only factor for successful periodontal regeneration in delayed replantation. Various other factors such as proteins or the extracellular matrix (ECM) may play a role in this process. The purpose of this study was to characterize changes in the proteome components of periodontal ligament (PDL) tissue after hypothermic preservation of the tooth. METHODS: Extracted teeth were divided into 4 groups: immediate sampling, sampling after 1 week of preservation at 4°C, sampling after 2 weeks of preservation at 4°C, and sampling after 1 week of dry storage at room temperature as a negative control...
June 1, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28543887/treatment-of-venous-lake-with-multi-wavelength-595-and-1064-nm-lasers-in-asian-fitzpatrick-skin-type-iv-patients
#10
Jing Yang, Xiaohong Guo, Xiaorong Tong, Juan Tao
BACKGROUND: Multi-wavelength lasers are reportedly useful for treating venous lake (VL) in Caucasian patients. However, the same parameters may not be safe for Asian patients with Fitzpatrick skin type (FST) IV. PURPOSE: Report experience with using multi-wavelength laser for VL treatment in Asian patients with FST IV. METHODS: Seventeen episodes of VL in 15 Chinese patients with FST IV were treated. 595-nm pulsed dye (PDL) laser followed by 1,064-nm neodymium-doped yttrium aluminum garnet (Nd:YAG) laser were administered...
May 24, 2017: Photodermatology, Photoimmunology & Photomedicine
https://www.readbyqxmd.com/read/28542267/discerning-morpho-anatomical-physiological-and-molecular-multiformity-in-cultivated-and-wild-genotypes-of-lentil-with-reconciliation-to-salinity-stress
#11
Dharmendra Singh, Chandan Kumar Singh, Shanti Kumari, Ram Sewak Singh Tomar, Sourabh Karwa, Rajendra Singh, Raja Bahadur Singh, Susheel Kumar Sarkar, Madan Pal
One hundred and sixty two genotypes of different Lens species were screened for salinity tolerance in hydroponics at 40, 80 and 120 mM sodium chloride (NaCl) for 30 d. The germination, seedling growth, biomass accumulation, seedling survivability, salinity scores, root and shoot anatomy, sodium ion (Na+), chloride ion (Cl-) and potassium ion (K+) concentrations, proline and antioxidant activities were measured to evaluate the performance of all the genotypes. The results were compared in respect of physiological (Na+, K+ and Cl-) and seed yield components obtained from field trials for salinity stress conducted during two years...
2017: PloS One
https://www.readbyqxmd.com/read/28531913/methods-of-isolation-and-characterization-of-stem-cells-from-different-regions-of-oral-cavity-using-markers-a-systematic-review
#12
REVIEW
Kavarthapu Avinash, Sankari Malaippan, Jayakumar Nadathur Dooraiswamy
Background: Periodontitis is a destructive inflammatory disorder of the periodontium caused by the destruction of periodontal tissues namely the PDL, cementum, alveolar bone, and gingiva. Once these tissues are lost, the foremost goal of periodontal therapy is to regenerate the diseased tissues if possible to their original form, architecture, and function. Various regenerative procedures were employed and still a gap was found in achieving the goal. As stem cells are characterized by their ability to self-renew and differentiate to produce specialized cells, there could be a possibility of using them for regenerative therapy...
May 30, 2017: International Journal of Stem Cells
https://www.readbyqxmd.com/read/28528141/portland-cement-induces-human-periodontal-ligament-cells-to-differentiate-by-upregulating-mir-146a
#13
Min-Ching Wang, Li-Yin Yeh, Wen-Yu Shih, Wan-Chun Li, Kuo-Wei Chang, Shu-Chun Lin
BACKGROUND/PURPOSE: Bioaggregates such as Portland cement (PC) can be an economical alternative for mineral trioxide aggregate (MTA) with additional benefit of less discoloration. MTA has been known to induce differentiations of several dental cells. MicroRNAs are important regulators of biological processes, including differentiation, physiologic homeostasis, and disease progression. This study is to explore how PC enhances the differentiation of periodontal ligament (PDL) cells in microRNAs level...
May 18, 2017: Journal of the Formosan Medical Association, Taiwan Yi Zhi
https://www.readbyqxmd.com/read/28522749/expansion-of-tumor-infiltrating-cd8-t-cells-expressing-pd-1-improves-the-efficacy-of-adoptive-t-cell-therapy
#14
Sarita M Fernandez-Poma, Diego Salas-Benito, Teresa Lozano, Noelia Casares, José-Ignacio Riezu-Boj, Uxua Mancheño, Edurne Elizalde, Diego Alignani, Natalia Zubeldia, Itziar Otano, Enrique Conde, Pablo Sarobe, Juan J Lasarte, Sandra Hervas-Stubbs
Recent studies have found that tumor-infiltrating lymphocytes (TIL) expressing PD-1 can recognize autologous tumor cells, suggesting that cells derived from PD-1+ TIL can be used in adoptive T cell therapy (ACT). However, no study thus far has evaluated the antitumor activity of PD-1-selected TIL in vivo. In two mouse models of solid tumors, we show that PD-1 allows identification and isolation of tumor-specific TIL without previous knowledge of their antigen specificities. Importantly, despite the high proportion of tumor-reactive T cells present in bulk CD8 TIL before expansion, only T cell products derived from sorted PD-1+, but not from PD-1- or bulk CD8 TIL, specifically recognized tumor cells...
May 18, 2017: Cancer Research
https://www.readbyqxmd.com/read/28488345/patterns-of-pd-1-pd-l1-and-pd-l2-expression-in-pediatric-solid-tumors
#15
Navin Pinto, Julie R Park, Erin Murphy, Jennifer Yearley, Terri McClanahan, Lakshmanan Annamalai, Douglas S Hawkins, Erin R Rudzinski
BACKGROUND: Significant antitumor effects have been observed in a variety of malignancies via blockade of immune checkpoints. Interaction of programmed death 1 (PD-1) with its ligands PD-L1 and PD-L2 suppresses T-cell function and restricts immune-mediated tumor killing. We examined expression of these proteins in children with solid tumors, as expression may serve as biomarkers of response to this class of drugs. METHODS: Sections cut from formalin-fixed paraffin-embedded (FFPE) tissue blocks were processed and evaluated for PD-1, PD-L1, and PD-L2 by immunohistochemistry (IHC) as well as by mRNA expression...
May 10, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28481010/dynamics-of-big-bubble-formation-in-deep-anterior-lamellar-keratoplasty-by-the-big-bubble-technique-in%C3%A2-vitro-studies
#16
Harminder S Dua, Lana A Faraj, Mohamed B Kenawy, Saief AlTaan, Mohamed S Elalfy, Tarek Katamish, Dalia G Said
PURPOSE: To examine the movement of air injected in the cornea in simulated deep anterior lamellar keratoplasty (DALK), from the needle tip to the formation of different types of big bubbles (BB) and to ascertain how air travels through the stroma and pre-Descemet's layer [Dua's layer (PDL)] to create a type-1 (air between PDL and deep stroma) and type-2BB (air between PDL and Descemet's membrane). METHODS: Air was injected in 57 sclerocorneal discs and the passage recorded...
May 8, 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/28476944/impact-of-age-on-outcomes-with-immunotherapy-for-patients-with-melanoma
#17
Allison S Betof, Ryan D Nipp, Anita Giobbie-Hurder, Romany A N Johnpulle, Krista Rubin, Samuel M Rubinstein, Keith T Flaherty, Donald P Lawrence, Douglas B Johnson, Ryan J Sullivan
BACKGROUND: Monoclonal antibodies (mAb) targeting PD-1/PD-L1 have revolutionized melanoma treatment, yet data regarding effectiveness and tolerability across age groups is limited. We sought to determine the impact of age on overall survival (OS), progression-free survival (PFS), and rates of immune-mediated toxicities in patients treated with anti-PD-1/anti-PD-L1 mAb at two academic medical centers. METHODS: We retrospectively collected data on all patients with metastatic melanoma treated with anti-PD-1/PD-L1 mAb between May 2009 and April 2015...
May 5, 2017: Oncologist
https://www.readbyqxmd.com/read/28463085/low-intensity-pulsed-ultrasound-reduces-periodontal-atrophy-in-occlusal-hypofunctional-teeth
#18
Yuki Kasahara, Risa Usumi-Fujita, Jun Hosomichi, Sawa Kaneko, Yuji Ishida, Naoki Shibutani, Yasuhiro Shimizu, Asuka Okito, Shuji Oishi, Yoichiro Kuma, Hiroyuki Yamaguchi, Takashi Ono
OBJECTIVE: To clarify whether low-intensity pulsed ultrasound (LIPUS) exposure has recovery effects on the hypofunctional periodontal ligament (PDL) and interradicular alveolar bone (IRAB). MATERIALS AND METHODS: Twelve-week-old male Sprague-Dawley rats were divided into three groups (n = 5 each): a normal occlusion (C) group, an occlusal hypofunction (H) group, and an occlusal hypofunction group subjected to LIPUS (HL) treatment. Hypofunctional occlusion of the maxillary first molar (M1) of the H and HL groups was induced by the bite-raising technique...
May 2, 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/28447362/randomized-controlled-trial-split-faced-study-of-595-nm-pulsed-dye-laser-in-the-treatment-of-acne-vulgaris-and-acne-erythema-in-adolescents-and-early-adulthood
#19
Ramrada Lekwuttikarn, Therdpong Tempark, Susheera Chatproedprai, Siriwan Wananukul
The high prevalence of acne vulgaris in teenagers has increased comorbidities. Lasers offer alternative options for acne treatment because they have rapid action, low systemic adverse effects, and do not require everyday treatment. To study the efficacy and patients' satisfaction of 595-nm pulse dye laser (PDL) treatment of acne vulgaris and acne erythema in adolescents and early adulthood, we designed a blocked-randomized, split-faced 595-nm PDL (fluence 8 J/cm(3) pulse duration 10 ms, spot size 7 mm, 2 session every 2 weeks) study in patients with mild to moderate acne by comparing the laser-treated and non-treated side...
April 26, 2017: International Journal of Dermatology
https://www.readbyqxmd.com/read/28444165/proinflammatory-mediators-related-to-orthodontically-induced-periapical-root-resorption-in-rat-mandibular-molars
#20
Yoshiro Matsumoto, Siripen Sringkarnboriboon, Takashi Ono
Objectives: The early phase of orthodontic tooth movement involves acute inflammatory response that may induce bone resorption. The aim of this study was to localize and quantify cells in the periodontium expressing proinflammatory mediators during orthodontically induced periapical root resorption of the rat mandibular molars. Materials and methods: The levels of proinflammatory cytokines interleukin-1 (IL-1) α and β, tumor necrosis factor-α (TNF-α), inflammatory enzymes cyclooxygenase (COX) 1 and 2, and their product prostaglandin E2 (PGE2) in the root resorption site were compared to those in the corresponding area of the untreated periodontal ligament (PDL) of physiologically drifting teeth...
April 22, 2017: European Journal of Orthodontics
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