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https://www.readbyqxmd.com/read/28093072/in-vitro-effects-of-hyaluronic-acid-on-human-periodontal-ligament-cells
#1
Masako Fujioka-Kobayashi, Heinz-Dieter Müller, Andrea Mueller, Adrian Lussi, Anton Sculean, Patrick R Schmidlin, Richard J Miron
BACKGROUND: Hyaluronic acid (HA) has been reported to have a positive effect on periodontal wound healing following nonsurgical and surgical therapy. However, to date, a few basic in vitro studies have been reported to investigating the potential of HA on human periodontal ligament (PDL) cell regeneration. Therefore, the aim of this study was to investigate the effect of HA on PDL cell compatibility, proliferation, and differentiation in vitro. METHODS: Either non-cross-linked (HA_ncl) or cross-linked (HA_cl) HA was investigated...
January 16, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/28088993/treatment-of-recalcitrant-port-wine-stains-pws-using-a-combined-pulsed-dye-laser-pdl-and-radiofrequency-rf-energy-device
#2
Yoon-Soo Cindy Bae, Hamad Alabdulrazzaq, Jeremy A Brauer, Roy G Geronemus
BACKGROUND: Pulsed dye laser (PDL) is the treatment of choice for port-wine stains (PWS). Some PWS are recalcitrant to this modality. A number of reasons for PDL treatment resistance have been described, including inadequate heat generation. OBJECTIVE: We evaluated PDL combined with radiofrequency (RF) energy into a single device to target larger and deeper blood vessels and overcome PDL resistance. METHOD: This was an open-label, prospective, single-center investigation of a novel device combining RF energy with PDL conducted to treat recalcitrant PWS...
February 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/28079942/treatment-of-capillary-malformation-using-topical-timolol-combined-with-585-nm-pulsed-dye-laser-a-prospective-randomized-split-lesion-study
#3
Sang-Jin Cheon, Woo-Haing Shim, Gun-Wook Kim, Hoon-Soo Kim, Byung-Soo Kim, Moon-Bum Kim, Hyun-Chang Ko
Capillary malformation (CM) is a congenital vascular malformation characterized by the dilation of superficial dermal blood vessels.(1)  Currently, pulsed dye laser (PDL) is considered the gold standard for the treatment of CM.(1)  However, its use results in incomplete clearance despite multiple sessions and relapses during long-term follow-up.(1)  Alternative methods are needed to achieve improved therapeutic results. This article is protected by copyright. All rights reserved.
January 12, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28071181/cd8-t-cells-mediate-the-regenerative-pth-effect-in-hpdl-cells-via-wnt10b-signaling
#4
Michael Wolf, Stefan Lossdörfer, Jana Marciniak, Piero Römer, Christian Kirschneck, Rogerio Craveiro, James Deschner, Andreas Jäger
It was the aim of the present investigation to examine whether the stimulating effect of parathyroid hormone (PTH) on human periodontal ligament (hPDL) cell proliferation and differentiation would be enhanced by hPDL/T-cell interaction involving Wnt10b signaling as a mediating pathway. hPDL cells were cultured from healthy premolar tissues of three adolescent orthodontic patients and exposed to PTH(1-34) in monocultures or co-cultures with CD8(+) T cells. At harvest, proliferation, alkaline phosphatase-specific activity (ALP), and osteocalcin production were determined by immunofluorescence cytochemistry, real-time PCR, biochemical assay, and ELISA...
November 2016: Innate Immunity
https://www.readbyqxmd.com/read/28068493/bmp1-and-tll1-are-required-for-maintaining-periodontal-homeostasis
#5
J Wang, D Massoudi, Y Ren, A M Muir, S E Harris, D S Greenspan, J Q Feng
Mutations in bone morphogenetic protein 1 (BMP1) in humans or deletion of BMP1 and related protease tolloid like 1 (TLL1) in mice lead to osteogenesis imperfecta (OI). Here, we show progressive periodontal defects in mice in which both BMP1 and TLL1 have been conditionally ablated, including malformed periodontal ligament (PDL) (recently shown to play key roles in normal alveolar bone formation), significant loss in alveolar bone mass ( P < 0.01), and a sharp reduction in cellular cementum. Molecular mechanism studies revealed a dramatic increase in the uncleaved precursor of type I collagen (procollagen I) and a reduction in dentin matrix protein 1 (DMP1), which is partially responsible for defects in extracellular matrix (ECM) formation and mineralization...
January 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28061389/in-vitro-proliferation-of-periodontal-ligament-like-tissue-on-extracted-teeth
#6
T Iwata, C Mino, T Kawata
OBJECTIVE: Transplantation of autologous teeth is a routine component of orthodontic treatment. The aim of this study was to develop a method for the regeneration of damaged periodontal ligament (PDL) on extracted teeth using a three-dimensional culture system. DESIGN: We used the maxillary first premolars or third molars extracted from patients for orthodontic treatment. The extracted teeth were stained with toluidine blue to measure the residual PDL area. After confirming damage of the periodontal tissue on the root surface of the extracted teeth, we tried to regenerate the periodontal tissue...
November 30, 2016: Archives of Oral Biology
https://www.readbyqxmd.com/read/28056485/evidence-of-invasive-and-non-invasive-treatment-modalities-for-hypertrophic-scars-a-systematic-review
#7
Mona Kafka, Vanessa Collins, Lars-Peter Kamolz, Thomas Rappl, Ludwik K Branski, Paul Wurzer
Currently, there are various therapeutic approaches to reduce hypertrophic scarring, however, there is no standard evidence-based treatment protocol. Hence, we performed a systematic review to obtain a summary of the latest clinical trials to evaluate evidence for the treatment of hypertrophic scars. The review protocol was registered and approved by PROSPERO (CRD42015027040). PubMed and Web of Science were searched using predefined MeSH-Terms to identify studies published within the last 10 years regarding treatment for hypertrophic scars...
January 5, 2017: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/28043177/the-pulsed-dye-laser-is-more-effective-and-rapidly-acting-than-intralesional-meglumine-antimoniate-therapy-for-cutaneous-leishmaniasis
#8
Mohammad Radmanesh, Ehsan Omidian
BACKGROUND AND OBJECTIVE: The Pulsed dye laser (PDL) is not tested yet for the treatment of cutaneous leishmaniasis (CL). We compared the efficacy of 585nm PDL with intralesional meglumine antimoniate (MA) on 17 patients with 81 lesions of cutaneous leishmaniasis. PATIENTS AND METHOD: Out of the 81 lesions, 42 lesions were treated with one or two passes of PDL fortnightly and 39 lesions in the same patients were treated with intralesional MA weekly. The fluence chosen for the laser was 7 Joules/cm2 with 5mm spot size...
January 3, 2017: Journal of Dermatological Treatment
https://www.readbyqxmd.com/read/28042260/effect-of-platelet-rich-plasma-concentrations-on-the-proliferation-of-periodontal-cells-an-in-vitro-study
#9
Sara Tavassoli-Hojjati, Mandana Sattari, Tayebeh Ghasemi, Rahil Ahmadi, Abbas Mashayekhi
OBJECTIVE: The purpose of this study was to evaluate the effect of different concentrations of platelet-rich plasma (PRP) on the proliferation of undifferentiated periodontal ligament (PDL) fibroblasts. MATERIALS AND METHODS: The undifferentiated PDL fibroblasts were obtained from two healthy human premolar teeth and cultured in Dulbecco's modified Eagle's medium. Cell wells were divided into five groups. Experimental groups received 0.1%, 5%, or 50% PRP; the positive and negative control groups were cultured in fetal bovine serum (FBS) 12% and in a medium without FBS 12%, respectively...
October 2016: European Journal of Dentistry
https://www.readbyqxmd.com/read/27993989/the-transcription-factor-mohawk-homeobox-regulates-homeostasis-of-the-periodontal-ligament
#10
Naoki Koda, Tempei Sato, Masahiro Shinohara, Shizuko Ichinose, Yoshiaki Ito, Ryo Nakamichi, Tomohiro Kayama, Kensuke Kataoka, Hidetsugu Suzuki, Keiji Moriyama, Hiroshi Asahara
The periodontal ligament (PDL), which connects the teeth to the alveolar bone, is essential for periodontal tissue homeostasis. Although the significance of the PDL is recognized, molecular mechanisms underlying PDL function are not well known. We report that mohawk homeobox (Mkx), a tendon-specific transcription factor, regulates PDL homeostasis by preventing its degeneration. Mkx is expressed in the mouse PDL at the age of 10 weeks and expression remained at similar levels at 12 months. In Mkx(-/-) mice, age-dependent expansion of the PDL at the maxillary first molar (M1) furcation area was observed...
January 15, 2017: Development
https://www.readbyqxmd.com/read/27987326/risk-factors-for-recurrence-after-successful-treatment-of-warts-the-role-of-smoking-habits
#11
P L Bencini, S Guida, S Cazzaniga, G Pellacani, M G Galimberti, M Bencini, L Naldi
BACKGROUND: Several therapies have been proposed for cutaneous warts without results concerning factors affecting recurrences. OBJECTIVE: To determine the importance of individual characteristics and different therapy modalities in the occurrence of relapses. METHODS: Observational prospective cohort study including 199 patients affected by multiple plantar warts treated as follows: 49 with keratolytics, 50 with CO2 laser, 50 with pulsed dye laser (PDL) and 50 with cryotherapy...
December 17, 2016: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/27924608/a-method-to-isolate-purify-and-characterize-human-periodontal-ligament-stem-cells
#12
Krzysztof Mrozik, Stan Gronthos, Songtao Shi, P Mark Bartold
Human periodontal ligament stem cells (PDLSCs) are a unique population of mesenchymal stem cells (MSCs) that demonstrate the capacity to generate cementum- and periodontal ligament-like structures in vivo. As such, PDLSCs represent a promising cell-based therapy in reconstructive dentistry for the treatment of periodontal disease. The present chapter describes two methods for isolating PDLSCs from human PDL tissue including traditional plastic adherence, and immunomagnetic selection based on the expression of MSC-associated surface markers STRO-1 antigen, CD146 (MUC-18), CD29 (Integrin β-1), CD44, and CD106 (VCAM-1)...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27911476/nd-yag-and-pulsed-dye-laser-therapy-in-infantile-hemangiomas-a-retrospective-analysis-of-271-treated-hemangiomas-in-149-children
#13
F Hartmann, A Lockmann, L-L Grönemeyer, H A Haenssle, M Zutt, H von Fintel, I Kühnle, M P Schön, K-M Thoms
BACKGROUND: Infantile hemangiomas (IH) are common benign tumors in infancy. Most IH resolve spontaneously, but some require treatment due to ulceration, functional impairment or cosmetic disfiguration. While systemic propranolol is effective in many cases, laser therapy may be a safe topical alternative. OBJECTIVE: To assess the efficacy of combined Nd:YAG/pulsed dye laser (PDL) or PDL alone for therapy of IH. PATIENTS AND METHODS: 271 IH in 149 infants were treated with combined Nd:YAG/PDL or PDL alone...
December 2, 2016: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/27911144/comparison-of-pulsed-dye-laser-versus-combined-pulsed-dye-laser-and-nd-yag-laser-in-the-treatment-of-inflammatory-acne-vulgaris
#14
Manal Mohamed Salah El Din, Nevien Ahmed Samy, Amira Eid Salem
BACKGROUND: Both pulsed dye laser and combined 585/1,064-nm (sequential dual-wave-length PDL and Nd:YAG) laser improves inflammatory skin disorders including acne vulgaris. OBJECTIVE: To compare the efficacy of 585 nm pulsed dye laser versus sequential dual-wave-length PDL and Nd:YAG in treatment of acne vulgaris. PATIENTS AND METHOD: Thirty patients complaining of acne vulgaris were treated with a single pass of PDL alone on half of the face and a single pass of combined 585/1064-nm laser on the other half for four treatment sessions at 2 weeks interval, then assessed by the count and severity of the acne lesions & digital camera photographs Results: The study showed that inflammatory acne lesions count was significantly reduced by 82...
December 2, 2016: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
https://www.readbyqxmd.com/read/27907187/substance-p-induces-ho-1-expression-in-raw-264-7-cells-promoting-switch-towards-m2-like-macrophages
#15
Giovanna Montana, Nadia Lampiasi
Substance P (SP) is a neuropeptide that mediates many physiological as well as inflammatory responses. Recently, SP has been implicated in the resolution of inflammation through induction of M2 macrophages phenotype. The shift between M1-like and M2-like, allowing the resolution of inflammatory processes, also takes place by means of hemeoxygenase-1 (HO-1). HO-1 is induced in response to oxidative stress and inflammatory stimuli and modulates the immune response through macrophages polarisation. SP induces HO-1 expression in human periodontal ligament (PDL), the latter potentially plays a role in cytoprotection...
2016: PloS One
https://www.readbyqxmd.com/read/27905816/cementocyte-cell-death-occurs-in-rat-cellular-cementum-during-orthodontic-tooth-movement
#16
Humihiro Matsuzawa, Naoko Toriya, Yuya Nakao, Moe Konno-Nagasaka, Toshiya Arakawa, Miki Okayama, Itaru Mizoguchi
OBJECTIVE: To clarify the mechanism of root resorption during orthodontic treatment, we examined cementocyte cell death and root resorption in the cellular cementum on the pressure side during experimental tooth movement. MATERIALS AND METHODS: Using 8-week-old male Wistar rats, the right first molar was pushed mesiobuccally with a force of 40 g by a Ni-Ti alloy wire while the contralateral first molar was used as a control. Localization and number of cleaved caspase-3-positive and single-stranded DNA (ssDNA) - positive cells were evaluated using dual-label immunohistochemistry with anticleaved caspase-3 and anti-ssDNA antibodies...
December 1, 2016: Angle Orthodontist
https://www.readbyqxmd.com/read/27901202/in-vivo-performance-of-different-scaffolds-for-dental-pulp-stem-cells-induced-for-odontogenic-differentiation
#17
Cigdem Atalayin, Huseyin Tezel, Taner Dagci, Nefise Ulku Karabay Yavasoglu, Gulperi Oktem, Timur Kose
This study was designed to determine the in vivo performance of three different materials as scaffolds for dental pulp stem cells (DPSC) undergoing induced odontogenic differentiation. An odontogenic medium modified by the addition of recombinant human bone morphogenetic protein 2 was used in the experimental groups to induce differentiation. Mesenchymal stem cell medium was used in the control groups. DPSC were transplanted onto the backs of mice via three scaffolds: copolymer of L-lactide and DL-lactide (PLDL), copolymer of DL-lactide (PDL) and hydroxyapatite tricalcium phosphate (HA/TCP)...
November 28, 2016: Brazilian Oral Research
https://www.readbyqxmd.com/read/27832279/artificial-polymeric-scaffolds-as-extracellular-matrix-substitutes-for-autologous-conjunctival-goblet-cell-expansion
#18
Min He, Thomas Storr-Paulsen, Annie L Wang, Chiara E Ghezzi, Siran Wang, Matthew Fullana, Dimitrios Karamichos, Tor P Utheim, Rakibul Islam, May Griffith, M Mirazul Islam, Robin R Hodges, Gary E Wnek, David L Kaplan, Darlene A Dartt
Purpose: We fabricated and investigated polymeric scaffolds that can substitute for the conjunctival extracellular matrix to provide a substrate for autologous expansion of human conjunctival goblet cells in culture. Methods: We fabricated two hydrogels and two silk films: (1) recombinant human collagen (RHC) hydrogel, (2) recombinant human collagen 2-methacryloylxyethyl phosphorylcholine (RHC-MPC) hydrogel, (3) arginine-glycine-aspartic acid (RGD) modified silk, and (4) poly-D-lysine (PDL) coated silk, and four electrospun scaffolds: (1) collagen, (2) poly(acrylic acid) (PAA), (3) poly(caprolactone) (PCL), and (4) poly(vinyl alcohol) (PVA)...
November 1, 2016: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/27828142/design-and-fabrication-of-a-low-loss-and-asymmetric-1%C3%A2-%C3%A3-%C3%A2-5-arbitrary-optical-power-splitter
#19
Liang Liang Wang, Jun Ming An, Jia Shun Zhang, Yuan Da Wu, Jian Guang Li, Xiao Jie Yin, Hong Jie Wang, Yue Wang, Fei Zhong, Qiang Zha, Xiong Wei Hu
In this paper, a low-loss and wavelength-insensitive asymmetric 1×5 arbitrary optical power splitter is designed and optimized, which is composed of a three-branch and two Y-branch elements. A low-loss and wavelength-independent arbitrary 1×5 optical power splitter can be obtained. Asymmetric 1×5 optical power splitters of different output ratios are fabricated using silica-based planar lightwave circuit (PLC) technology on a 6-inch quartz substrate. The measured results show that the IL<sub>output1</sub>, IL<sub>output2∼5</sub>, UNIF<sub>output2∼5</sub>, PDL, and WDL of the output ratio 33%:67%, 50%:50%, and 95%:5% are less than (5...
October 20, 2016: Applied Optics
https://www.readbyqxmd.com/read/27816392/assessing-pdl-1-and-pd-1-in-non-small-cell-lung-cancer-a-novel-immunoscore-approach
#20
Erna-Elise Paulsen, Thomas K Kilvaer, Mehrdad Rakaee Khanehkenari, Samer Al-Saad, Sigurd M Hald, Sigve Andersen, Elin Richardsen, Nora Ness, Lill-Tove Busund, Roy M Bremnes, Tom Donnem
INTRODUCTION: Immune checkpoint inhibitors targeting programmed cell death protein 1 (PD-1) or its ligand, PD-L1, have gained momentum in the treatment of non-small cell lung cancer (NSCLC). However, their prognostic significance remains controversial. The present study evaluated the expression of PD-L1 and PD-1 and their potential role in an Immunoscore, supplementing the TNM classification of NSCLC. MATERIALS AND METHODS: Tissue microarrays constructed from tumor tissue samples from 2 cohorts of a total of 536 patients (University Hospital of North Norway, n = 285; Nordland Hospital, n = 251) with primary resected stage I to IIIA NSCLC...
October 5, 2016: Clinical Lung Cancer
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