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https://www.readbyqxmd.com/read/29763348/histological-alterations-from-condyle-repositioning-with-functional-appliances-in-rats
#1
Michiko Nakatsuka, Shunji Kumabe
OBJECTIVE: This study was designed to assess the morphological and histological alterations of the condyle of rats undergoing forward mandibular repositioning via functional appliance. MATERIALS AND METHODS: Functional appliances were mounted onto the upper jaws of rats. Morphological analysis was conducted on micro-CT images of sacrificed animals. Histological changes in condyle were examined by immunohistochemistry using proliferating cell nuclear antigen (PCNA), matrix metalloproteases (MMPs), vascular endothelial growth factor (VEGF), tissue inhibitors of matrix metalloproteinases (TIMP-1), interleukin 1b (IL-1β), Aggrecan and Type II collagen...
May 15, 2018: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/29715501/pharmacology-study-of-a-chimeric-decoy-receptor-trap-fusion-protein-on-retina-neovascularization-by-dual-blockage-of-vegf-and-fgf-2
#2
Jing Jiang, Ke Xu, Ling Wang, Wei Xin, Guorui Zhao, Min Huang, Shenjun Li, Xuejing Luan, Jianmin Fang
BACKGROUND: Clinical anti-vascular epithelial growth factor (VEGF) therapy trials faced a major challenge due to upregulated expression of other pro-angiogenic factors, such as fibroblast growth factor-2 (FGF-2). RC28, a novel recombinant dual decoy receptor IgG1 Fc-fusion protein, can block VEGFA and FGF-2 simultaneously. It is designed for the treatment of neovascular age-related macular degeneration and other pathological ocular neovascularization. The present study investigated the prevention efficacy of RC28 on choroidal neovascularization (CNV) in a monkey model and compared to the other mono VEGF antagonists; biodistribution and pharmacokinetics performance were also investigated...
April 28, 2018: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29708213/photoacoustic-imaging-of-tumour-vascular-permeability-with-indocyanine-green-in-a-mouse-model
#3
Kenichiro Okumura, Kotaro Yoshida, Kazuaki Yoshioka, Sho Aki, Norihide Yoneda, Dai Inoue, Azusa Kitao, Takahiro Ogi, Kazuto Kozaka, Tetsuya Minami, Wataru Koda, Satoshi Kobayashi, Yoh Takuwa, Toshifumi Gabata
Background: We analysed the haemodynamics of indocyanine green (ICG) in mouse organs and tumours and evaluated responses to anti-angiogenic agents in an allograft tumour mouse model by photoacoustic imaging. Methods: Thirty-six male mice (aged 10-14 weeks; body weight 20-25 g) were used. Real-time photoacoustic imaging of organs and tumours after intravenous injection of ICG was conducted in mice until 10 min after ICG injection. ICG distribution in tumour tissues was assessed by immunohistochemical staining and observation of ICG-derived fluorescence...
2018: European radiology experimental
https://www.readbyqxmd.com/read/29644002/loss-of-neutrophil-polarization-in-colon-carcinoma-liver-metastases-of-mice-with-an-inducible-liver-specific-igf-i-deficiency
#4
Roni F Rayes, Simon Milette, Maria Celia Fernandez, Boram Ham, Ni Wang, France Bourdeau, Stephanie Perrino, Shoshana Yakar, Pnina Brodt
The growth of cancer metastases in the liver depends on a permissive interaction with the hepatic microenvironment and neutrophils can contribute to this interaction, either positively or negatively, depending on their phenotype. Here we investigated the role of IGF-I in the control of the tumor microenvironment in the liver, using mice with a conditional, liver-specific, IGF-I deficiency (iLID) induced by a single tamoxifen injection. In mice that had a sustained (3 weeks) IGF-I deficiency prior to the intrasplenic/portal inoculation of colon carcinoma MC-38 cells, we observed an increase in neutrophil accumulation in the liver relative to controls...
March 20, 2018: Oncotarget
https://www.readbyqxmd.com/read/29617404/angiogenic-role-of-mir-20a-in-breast-cancer
#5
Gines Luengo-Gil, Enrique Gonzalez-Billalabeitia, Sergio Alejo Perez-Henarejos, Esther Navarro Manzano, Asuncion Chaves-Benito, Elena Garcia-Martinez, Elisa Garcia-Garre, Vicente Vicente, Francisco Ayala de la Peña
BACKGROUND: Angiogenesis is a key process for tumor progression and a target for treatment. However, the regulation of breast cancer angiogenesis and its relevance for clinical resistance to antiangiogenic drugs is still incompletely understood. Recent developments on the contribution of microRNA to tumor angiogenesis and on the oncogenic effects of miR-17-92, a miRNA cluster, point to their potential role on breast cancer angiogenesis. The aim of this work was to establish the contribution of miR-20a, a member of miR-17-92 cluster, to tumor angiogenesis in patients with invasive breast carcinoma...
2018: PloS One
https://www.readbyqxmd.com/read/29534588/change-in-fgf-2-circulating-levels-after-arterial-embolization-in-patients-with-bone-metastases
#6
G Rossi, M Salerno, D Granchi, E Cenni, G Facchini, N Baldini
Arterial embolization, aimed at the mechanical occlusion of tumor-feeding vessels, represents a satisfactory palliative therapy for bone metastases. In this study, we evaluated if the circulating levels of three factors related to the metastatic process change in response to embolization. Seven patients who underwent embolization of a single skeletal metastasis from carcinomas were analyzed prospectively. Circulating levels of Vascular Endothelial Growth Factor A (VEGF-A), Fibroblast Growth Factor 2 (FGF-2), and Tartrate-Resistant Acid Phosphatase-5b Isoform (TRACP5b) were evaluated before and after embolization at 1, 3, and 6 months...
2018: Neoplasma
https://www.readbyqxmd.com/read/29377249/hmgb1-induced-inflammatory-response-promotes-bone-healing-in-murine-tooth-extraction-socket
#7
Hiroaki Aoyagi, Keisuke Yamashiro, Chiaki Hirata-Yoshihara, Hidetaka Ideguchi, Mutsuyo Yamasaki, Mari Kawamura, Tadashi Yamamoto, Shinsuke Kochi, Hidenori Wake, Masahiro Nishibori, Shogo Takashiba
High mobility group box 1 (HMGB1) is a non-histone DNA-binding protein that is secreted into the extracellular milieu in response to inflammatory stimuli. The secreted HMGB1 has been suggested to mediate various inflammatory diseases. However, it is still unknown whether HMGB1 is involved in a healing process in the tooth extraction socket, the tissue containing gingival epithelium, and alveolar bone that is exposed to oral bacteria. In this study, we constructed a murine tooth extraction model with anti-HMGB1 neutralization antibody administration and observed the inflammatory response and bone healing process in tooth extraction sockets by molecular imaging of myeloperoxidase (MPO) activity, histological analysis, and quantitative RT-PCR...
January 27, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29340480/bone-repair-access-of-boneceramic%C3%A2-in-5-mm-defects-study-on-rat-calvaria
#8
André Luis da Silva Fabris, Leonardo Perez Faverani, Pedro Henrique Silva Gomes-Ferreira, Tárik Ocon Braga Polo, Joel Ferreira Santiago-Júnior, Roberta Okamoto
OBJECTIVE: The aim of this study was to evaluate the osteoconductive potential of BoneCeramic™ on bone healing in rat calvaria 5-mm defects. MATERIAL AND METHODS: A 5-mm calvaria bone defect was induced in three groups and the defect was not filled with biomaterial [Clot Group (CG)], autogenous bone (AG), or Bone Ceramic Group (BCG). Animals were euthanized after 14 or 28 days and the bone tissue within the central area of the bone defect was evaluated. Results were compared using ANOVA and Tukey test (p<0...
January 15, 2018: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/29327231/loading-of-the-condylar-cartilage-can-rescue-the-effects-of-botox-on-tmj
#9
Eliane H Dutra, Mara H O'Brien, Candice Logan, Aditya Tadinada, Ravindra Nanda, Sumit Yadav
The purpose of this study is to evaluate whether the effects of botulinum neurotoxin (botox) injection into the masseter in the mandibular condylar cartilage (MCC) and subchondral bone could be rescued by compressive loading of the temporomandibular joint (TMJ). Twenty-four 6-week-old female mice (C57BL/6J) were used. Mice were divided in three groups: (1) Botox (n = 8); (2) Botox plus loading (n = 8); (3) Pure control (n = 8). Bone labels (3 and 1 day before sacrifice) and the proliferation marker EdU (2 and 1 day before sacrifice) were intraperitoneally injected into all groups of mice...
January 11, 2018: Calcified Tissue International
https://www.readbyqxmd.com/read/29284110/efficacy-of-lenvatinib-a-multitargeted-tyrosine-kinase-inhibitor-on-laser-induced-cnv-mouse-model-of-neovascular-amd
#10
Xian Wei, Ting Zhang, Yuqin Yao, Shaoxue Zeng, Min Li, Haotian Xiang, Chengjian Zhao, Guiqun Cao, Minhui Li, Ran Wan, Ping Yang, Jinliang Yang
Neovascular age-related macular degeneration (AMD) is a leading cause of vision loss worldwide. Although intravitreal injection of anti-VEGF antibodies and VEGF Trap have significant clinical benefits, the complications of intravitreal injection, drug resistance and patient compliance still need to be concerned. In this study, the effects of an orally administered multi-targeted tyrosine kinase inhibitor (Lenvatinib, E7080) were evaluated in vitro and in vivo on neovascular AMD mouse model. The results showed that E7080 effectively inhibited the proliferation, migration and tubule formation of human choroidal microvascular endothelial cells (HCMECs), and suppressed the angiogenesis of zebrafish subintestinal vessels without causing malformation...
March 2018: Experimental Eye Research
https://www.readbyqxmd.com/read/29203902/amniotic-fluid-stem-cell-derived-vesicles-protect-from-vegf-induced-endothelial-damage
#11
S Sedrakyan, V Villani, S Da Sacco, N Tripuraneni, S Porta, A Achena, M Lavarreda-Pearce, A Petrosyan, H Soloyan, R E De Filippo, B Bussolati, L Perin
Injection of amniotic fluid stem cells (AFSC) delays the course of progression of renal fibrosis in animals with Alport Syndrome, enhancing kidney function and improving survival. The mechanisms responsible for these protective outcomes are still largely unknown. Here, we showed that vascular endothelial growth factor (VEGF) signaling within the glomeruli of Alport mice is strongly elevated early on in the disease, causing glomerular endothelial cell damage. Intraventricular injected AFSC that homed within the glomeruli showed strong modulation of the VEGF activity, particularly in glomerular endothelial cells...
December 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29173997/the-impact-of-different-torques-for-the-insertion-of-immediately-loaded-implants-on-the-peri-implant-levels-of-angiogenesis-and-bone-related-markers
#12
A Verrastro Neto, R Andrade, M G Corrêa, R C V Casarin, M Z Casati, S P Pimentel, F V Ribeiro, F R Cirano
The aim of this split-mouth, randomized, double-blind, controlled clinical trial was to evaluate the influence of different insertion torque values for dental implants on bone- and angiogenesis-related marker profiles. Eighteen edentulous patients received dental implants and fixed complete-arch mandibular prostheses. The implants (n=36) were assigned randomly to two groups: reduced torque (n=18), with insertion torque <30Ncm; and conventional torque (n=18), with insertion torque ≥30Ncm. Levels of vascular endothelial growth factor (VEGF), placental growth factor, bone morphogenetic protein 9 (BMP-9), periostin, osteoprotegerin (OPG), and tartrate-resistant acid phosphatase (TRAP) in the peri-implant fluid were quantified at 7, 14, 30, and 120days after implant placement...
May 2018: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29149180/roles-of-vegf-flt-1-signaling-in-malignant-behaviors-of-oral-squamous-cell-carcinoma
#13
Ajiravudh Subarnbhesaj, Mutsumi Miyauchi, Chea Chanbora, Aki Mikuriya, Phuong Thao Nguyen, Hisako Furusho, Nurina Febriyanti Ayuningtyas, Minoru Fujita, Shigeaki Toratani, Masaaki Takechi, Shumpei Niida, Takashi Takata
BACKGROUND: Vascular endothelial growth factor (VEGF) is a highly specific signaling protein for vascular endothelial cells that plays a critical role in tumor growth and invasion through angiogenesis, and may contribute to cell migration and activation of pre-osteoclasts, osteoclasts and some tumor cells. OBJECTIVES: We aimed to clarify the detailed roles of VEGF-Flt-1 signaling in bone invasion of oral squamous cell carcinoma (OSCC) cells. RESULTS: Forty-two (42) of 54 cases with gingival SCC (77...
2017: PloS One
https://www.readbyqxmd.com/read/29141865/development-and-plasticity-of-meningeal-lymphatic-vessels
#14
Salli Antila, Sinem Karaman, Harri Nurmi, Mikko Airavaara, Merja H Voutilainen, Thomas Mathivet, Dmitri Chilov, Zhilin Li, Tapani Koppinen, Jun-Hee Park, Shentong Fang, Aleksanteri Aspelund, Mart Saarma, Anne Eichmann, Jean-Léon Thomas, Kari Alitalo
The recent discovery of meningeal lymphatic vessels (LVs) has raised interest in their possible involvement in neuropathological processes, yet little is known about their development or maintenance. We show here that meningeal LVs develop postnatally, appearing first around the foramina in the basal parts of the skull and spinal canal, sprouting along the blood vessels and cranial and spinal nerves to various parts of the meninges surrounding the central nervous system (CNS). VEGF-C, expressed mainly in vascular smooth muscle cells, and VEGFR3 in lymphatic endothelial cells were essential for their development, whereas VEGF-D deletion had no effect...
December 4, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/29130610/the-effects-of-icariin-on-wound-healing-of-extraction-sites-with-administration-of-zoledronic-and-dexamethasone-a-rat-model-study
#15
Jie Liu, Nikos Mattheos, Cheng Su, Chuanxi Deng, Nanyu Luo, Zekun Wang, Hua Tang
OBJECTIVE: This study was intended to investigate the effects of icariin on the healing of tooth extraction sites under the systemic administration of zoledronic and dexamethasone. METHOD: Thirty female rats underwent bilateral ovariectomy and were randomly assigned to 5 groups: SS group received a weekly injection of saline, while ZD, ZD + LICA, ZD + MICA, and ZD + HICA groups received zoledronic with dexamethasone for 8 weeks. One week later, mandibular first molars were extracted in all groups...
February 2018: Journal of Oral Pathology & Medicine
https://www.readbyqxmd.com/read/28971631/intravitreal-ziv-aflibercept-clinical-effects-and-economic-impact
#16
REVIEW
Sumit Randhir Singh, Avantika Dogra, Michael Stewart, Taraprasad Das, Jay Chhablani
During the past decade, drugs that inhibit the actions of vascular endothelial growth factor (VEGF) have become standard-of-care treatment for a variety of chorioretinal vascular conditions. The off-label, intravitreal use of ziv-aflibercept (Zaltrap) has provided clinicians with an additional cost-effective drug. The commercial preparation of ziv-aflibercept contains the same aflibercept (VEGF-trap) molecule as Eylea but has a much higher osmolarity (1000 mOsm/kg vs 300 mOsm/kg). Initial concerns regarding cytotoxicity and long-term safety of intravitreal ziv-aflibercept have been largely negated after a series of publications failed to identify adverse ocular and systemic side effects...
November 2017: Asia-Pacific Journal of Ophthalmology
https://www.readbyqxmd.com/read/28965804/neutralization-of-placental-growth-factor-as-a-novel-treatment-option-in-diabetic-retinopathy
#17
Tine Van Bergen, Tjing-Tjing Hu, Isabelle Etienne, Geert E Reyns, Lieve Moons, Jean H M Feyen
The current standard of care in clinical practice for diabetic retinopathy (DR), anti-vascular endothelial growth factor (VEGF) therapy, has shown a significant improvement in visual acuity. However, treatment response can be variable and might be associated with potential side effects. This study was designed to investigate inhibition of placental growth factor (PlGF) as a possible alternative therapy for DR. The effect of the anti-PlGF antibody (PL5D11D4) was preclinically evaluated in various animal models by investigating different DR hallmarks, including inflammation, neurodegeneration, vascular leakage and fibrosis...
December 2017: Experimental Eye Research
https://www.readbyqxmd.com/read/28963670/development-of-an-lc-ms-ms-method-with-protein-g-purification-strategy-for-quantifying-bevacizumab-in-human-plasma
#18
Huai-Hsuan Chiu, I-Lin Tsai, Yen-Shen Lu, Ching-Hung Lin, Ching-Hua Kuo
Biopharmaceutical products such as protein drugs and monoclonal antibodies (mAb) are currently of great interest with monoclonal antibody drugs being one of the fastest growing categories of biopharmaceutical products. Liquid chromatography-tandem mass spectrometry (LC-MS/MS) has gained high interest for measuring mAb drugs in biological samples in recent years due to its high selectivity. Bevacizumab is a humanized immunoglobulin G (IgG) mAb drug against human vascular endothelial cell growth factor A (VEGF-A)...
November 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28914593/effects-of-local-administration-of-tiludronic-acid-on-experimental-periodontitis-in-diabetic-rats
#19
Nara L T Nunes, Michel R Messora, Luiz Fernando Oliveira, Mario Lisboa, Marina Costa Barcellos Garcia, Rodrigo O C C Rêgo, Arthur Belém Novaes, Sérgio Luís Scombatti de Souza, Edilson Ervolino, Flávia A C Furlaneto
BACKGROUND: Tiludronic acid (TIL) presents antiresorptive and anti-inflammatory properties and it has not been evaluated in the association periodontitis-diabetes mellitus (DM) to date. This study evaluated the effects of local administration of TIL on experimental periodontitis (EP) in rats with streptozotocin-induced DM. METHODS: Thirty-two animals (Rattus norvegicus, albinus, Wistar) were divided into groups DM/C (Control), DM/EP, DM/EP/TIL1 and DM/EP/TIL3. In groups EP, a ligature was placed around mandibular molars (MM)...
September 15, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28850637/role-of-the-fc-region-in-the-vitreous-half-life-of-anti-vegf-drugs
#20
Kwangsic Joo, Sang Jun Park, Yewon Choi, Jung Eun Lee, Young Mi Na, Hye Kyoung Hong, Kyu Hyung Park, Ho Min Kim, Jae-Yong Chung, Se Joon Woo
Purpose: To identify the role of the fragment crystallizable (Fc) region in determining intraocular protein drug pharmacokinetics. Methods: We generated a new VEGF-Trap lacking the Fc region (FcfVEGF-Trap, MWt = 100 kDa) by replacing the Fc region of native VEGF-Trap (MWt = 145 kDa) with a dimerized coiled-coil domain. Forty-two rabbits were injected intravitreally with VEGF-Trap or FcfVEGF-Trap (n = 21 each) in one of the eyes, harvested at six time points (1 hour and 1, 2, 4, 14, and 30 days after injections)...
August 1, 2017: Investigative Ophthalmology & Visual Science
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