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https://www.readbyqxmd.com/read/28180966/an-update-on-the-role-of-pet-ct-and-pet-mri-in-ovarian-cancer
#1
REVIEW
Benjapa Khiewvan, Drew A Torigian, Sahra Emamzadehfard, Koosha Paydary, Ali Salavati, Sina Houshmand, Thomas J Werner, Abass Alavi
This review article summarizes the role of PET/CT and PET/MRI in ovarian cancer. With regard to the diagnosis of ovarian cancer, the presence of FDG uptake within the ovary of a postmenopausal woman raises the concern for ovarian cancer. Multiple studies show that FDG PET/CT can detect lymph node and distant metastasis in ovarian cancer with high accuracy and may, therefore, alter the management to obtain better clinical outcomes. Although PET/CT staging is superior for N and M staging of ovarian cancer, its role is limited for T staging...
February 8, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28131097/downregulation-of-indoleamine-2-3-dioxygenase-expression-in-the-villous-stromal-endothelial-cells-of-placentas-with-preeclampsia
#2
Naoyuki Iwahashi, Madoka Yamamoto, Sakiko Nanjo, Saori Toujima, Sawako Minami, Kazuhiko Ino
INTRODUCTION: Previous studies have shown that indoleamine 2, 3-dioxygenase (IDO), an immunosuppressive enzyme that converts tryptophan to kynurenine, is expressed in the placenta and might play a role in the maintenance of pregnancy, although its associations with the pathogeneses of preeclampsia (PE) and fetal growth restriction (FGR) remain unclear. The objective of this study was to investigate the differences in IDO expression among normal, PE, and FGR placentas, and the associations between IDO expression and clinical symptoms, or the expression of fms-like tyrosine kinase receptor-1 (Flt-1)...
January 23, 2017: Journal of Reproductive Immunology
https://www.readbyqxmd.com/read/28104392/scutellarein-antagonizes-the-tumorigenesis-by-modulating-cytokine-vegf-mediated-neoangiogenesis-and-dff-40-actuated-nucleosomal-degradation
#3
Prabhu Thirusangu, V Vigneshwaran, B R Vijay Avin, H Rakesh, H M Vikas, B T Prabhakar
Neoplastic cells often reside in distinctive tumor hypoxia armed with a series of adaptive responses including oxidative stress, defective apoptotic machinery and neoangiogenesis, through that further confer cell survival improvement. Plants still acts as reservoir of natural chemicals to provide newer active pharmacophores. Scutellarein is flavones which has wide range of pharmacophoral effects. In our current research, scutellarein employed for targeting oxidative stress mediated tumor angiogenesis and apoptotic nuclear fragmentation...
February 26, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28102569/human-%C3%AE-defensin-3-increases-the-tlr9-dependent-response-to-bacterial-dna
#4
Sarah L McGlasson, Fiona Semple, Heather MacPherson, Mohini Gray, Donald J Davidson, Julia R Dorin
Human β-defensin 3 (hBD3) is a cationic antimicrobial peptide with potent bactericidal activity in vitro. HBD3 is produced in response to pathogen challenge and can modulate immune responses. The amplified recognition of self-DNA by human plasmacytoid dendritic cells has been previously reported, but we show here that hBD3 preferentially enhances the response to bacterial DNA in mouse Flt-3 induced dendritic cells (FLDCs) and in human peripheral blood mononuclear cells. We show the effect is mediated through TLR9 and although hBD3 significantly increases the cellular uptake of both E...
January 19, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28102506/a-comparison-of-flt-to-fdg-pet-ct-in-the-early-assessment-of-chemotherapy-response-in-stages-ib-iiia-resectable-nsclc
#5
John P Crandall, Abdel K Tahari, Rosalyn A Juergens, Julie R Brahmer, Charles M Rudin, Giuseppe Esposito, Deepa S Subramaniam, Michael V Knopp, Nathan C Hall, Prateek Gajwani, Jeffrey P Leal, Martin A Lodge, Joo H O, Edward W Gabrielson, Lalitha K Shankar, Richard L Wahl
BACKGROUND: The aim of this study was to compare the percentage change in (18)F-fluorothymidine (FLT) standard uptake value (SUV) between baseline and after one cycle of chemotherapy in patients categorized by RECIST 1.1 computed tomography (CT) as responders or non-responders after two cycles of therapy. Change in (18)F-fluorodeoxyglucose (FDG) uptake was also compared between these time points. Nine patients with newly diagnosed, operable, non-small cell lung cancer (NSCLC) were imaged with FDG positron emission tomography/CT (PET), FLT PET/CT, and CT at baseline, following one cycle of neoadjuvant therapy (75 mg/m(2) docetaxel + 75 mg/m(2) cisplatin), and again after the second cycle of therapy...
December 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28101193/-18-f-flt-and-18-f-fdg-pet-ct-imaging-in-the-evaluation-of-early-therapeutic-effects-of-chemotherapy-on-walker-256-tumor-bearing-rats
#6
Weina Xu, Shupeng Yu, Jun Xin, Qiyong Guo
The present study aimed to evaluate the early therapeutic effects of chemotherapy on Walker 256 tumor-bearing Wistar rats via F-18-fluoro-3'-deoxy-3'-L-fluorothymidine ((18)F-FLT) and F-18-fluoro-deoxyglucose ((18)F-FDG) positron emission tomography-computed tomography (PET-CT) imaging. Walker 256 tumor-bearing Wistar rats were subjected to (18)F-FLT and (18)F-FDG PET-CT imaging prior to and 24 and 48 h after epirubicin chemotherapy. (18)F-FLT and (18)F-FDG uptake [tumor/muscle (T/M)], the percentage of injected dose per gram (% ID/g), and the Ki-67 labeling index (LI-Ki-67) were quantitatively determined for each rat prior to and following epirubicin chemotherapy...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28091565/-18-f-flt-and-18-f-fdg-pet-ct-in-predicting-response-to-chemoradiotherapy-in-nasopharyngeal-carcinoma-preliminary-results
#7
Shi Qi, Yang Zhongyi, Zhang Yingjian, Hu Chaosu
The purpose of this study was to explore the feasibility of (18)F-Fluorothymidine ((18)F-FLT) and (18)F-Fluorodeoxyglucose ((18)F-FDG) positron emission tomography/computed tomography (PET/CT) in predicting treatment response of nasopharyngeal carcinoma (NPC). Patients with NPC of Stage II-IVB were prospectively enrolled, receiving 2 cycles of neoadjuvant chemotherapy (NACT), followed by concurrent chemoradiotherapy. Each patient underwent pretreatment and post-NACT FLT PET/CT and FDG PET/CT. Standard uptake values (SUV) and tumor volume were measured...
January 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28081344/peripheral-flt-3-ligand-levels-as-a-pathobiological-parameter-duringthe-clinical-course-of-acute-myeloid-leukemia
#8
Memduh Şahin, İbrahim Celalettin Haznedaroğlu, Demircan Özbalcı
BACKGROUND/AIM: FLT-3 ligand is a growth factor affecting the hematopoietic lineage. The aim of this study was to evaluate the variability of peripheral FLT-3 ligand during the clinical course of acute myeloid leukemia (AML) patients. MATERIALS AND METHODS: Twenty-four patients were enrolled in this study in order to assess alterations in the circulating levels of FLT-3 ligand during the clinical course of AML. RESULTS: We studied the association in the diagnostic period between the FLT-3 ligand and peripheral blood cells together with serum electrolytes...
December 20, 2016: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28060742/overexpression-of-lncrna-anril-up-regulates-vegf-expression-and-promotes-angiogenesis-of-diabetes-mellitus-combined-with-cerebral-infarction-by-activating-nf-%C3%AE%C2%BAb-signaling-pathway-in-a-rat-model
#9
Bo Zhang, Dan Wang, Tie-Feng Ji, Lei Shi, Jin-Lu Yu
OBJECTIVE: This study aimed to explore the effects of lncRNA ANRIL on vascular endothelial growth factor (VEGF) and angiogenesis in diabetes mellitus (DM) combined with cerebral infarction (CI) through NF-κB signaling pathway. METHODS: Adult male Wistar rats were randomly divided into control group and DM + CI group, and the DM + CI group were subdivided into Vector, shANRIL, PDTC, pcDNA-ANRIL, and pcDNA-ANRIL + PDTC groups. VEGF and FMS-like tyrosine kinase (FLT-1) expressions were measured by immunohistochemistry and endothelium dependent microvessel density (MVD) was detected by differentiation 31 (CD31) and para-amiuosalicylic acid (PAS) double staining...
January 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/28048721/su-f-j-222-using-pet-imaging-to-evaluate-proliferation-and-blood-flow-in-irradiated-and-non-irradiated-bone-marrow-1-year-after-chemoradiation-therapy
#10
S McGuire, L Ponto, Y Menda
PURPOSE: To compare proliferation and blood flow in pelvic and thoracic bone marrow 1 year after pelvic chemoradiation. METHODS: Sixteen pelvic cancer patients were enrolled in an IRB-approved protocol to acquire FLT PET images during radiation therapy simulation (baseline) and 1 year after chemoradiation therapy. Three subjects also had optional O-15 water PET images acquired 1 year after chemoradiation therapy. Baseline FLT PET images were used to create IMRT plans to spare pelvic bone marrow identified as regions with FLT SUV ≥ 2 without compromising PTV coverage or OAR sparing...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047001/mo-ab-bra-06-dynamic-flt-pet-for-investigating-potential-synergistic-therapeutic-targets-during-anti-angiogenic-treatment
#11
M Scarpelli, U Simoncic, S Perlman, G Liu, R Jeraj
PURPOSE: Novel treatment strategies for metastatic cancer patients involve synergistically combining treatments with the hope of improving outcomes. This study investigated changes in tumor proliferative and vascular characteristics derived from dynamic [F-18]FLT PET during antiangiogenic treatment with the goal of identifying synergistic treatment opportunities. METHODS: Patients with various solid cancers underwent continuous three-week cycles of anti-angiogenic treatment with intermittent dosing (two-weeks-on/one-week-off)...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046517/we-h-207a-03-the-universality-of-the-lognormal-behavior-of-f-18-flt-pet-suv-measurements
#12
M Scarpelli, J Eickhoff, S Perlman, R Jeraj
PURPOSE: Log transforming [F-18]FDG PET standardized uptake values (SUVs) has been shown to lead to normal SUV distributions, which allows utilization of powerful parametric statistical models. This study identified the optimal transformation leading to normally distributed [F-18]FLT PET SUVs from solid tumors and offers an example of how normal distributions permits analysis of non-independent/correlated measurements. METHODS: Forty patients with various metastatic diseases underwent up to six FLT PET/CT scans during treatment...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28043794/synthetic-strategy-for-increasing-solubility-of-potential-flt3-inhibitor-thieno-2-3-d-pyrimidine-derivatives-through-structural-modifications-at-the-c2-and-c6-positions
#13
Changmok Oh, Hyuntae Kim, Jong Soon Kang, Jieun Yun, Jaejun Sim, Hwan-Mook Kim, Gyoonhee Han
Acute myeloid leukemia (AML) is a clonal disorder of hematopoietic progenitor cell. In AML, a mutation in FLT3 is commonly occurs and is associated with poor prognosis. We have previously reported that thieno[2,3-d]pyrimidine derivative compound 1 exhibited better antiproliferative activity against MV4-11 cells which harbor mutant FLT3 than AC220, which is a well-known FLT3 inhibitor, and has good microsomal stability. However, compound 1 had poor solubility. We then carried out further structural modification at the C2 and the C6 positions of thieno[2,3-d]pyrimidine scaffold...
December 23, 2016: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28042315/preclinical-applications-of-3-deoxy-3-18-f-fluorothymidine-in-oncology-a-systematic-review
#14
REVIEW
Sonja Schelhaas, Kathrin Heinzmann, Vikram R Bollineni, Gerbrand M Kramer, Yan Liu, John C Waterton, Eric O Aboagye, Anthony F Shields, Dmitry Soloviev, Andreas H Jacobs
The positron emission tomography (PET) tracer 3'-deoxy-3'-[(18)F]fluorothymidine ([(18)F]FLT) has been proposed to measure cell proliferation non-invasively in vivo. Hence, it should provide valuable information for response assessment to tumor therapies. To date, [(18)F]FLT uptake has found limited use as a response biomarker in clinical trials in part because a better understanding is needed of the determinants of [(18)F]FLT uptake and therapy-induced changes of its retention in the tumor. In this systematic review of preclinical [(18)F]FLT studies, comprising 174 reports, we identify the factors governing [(18)F]FLT uptake in tumors, among which thymidine kinase 1 plays a primary role...
2017: Theranostics
https://www.readbyqxmd.com/read/28033279/the-effect-of-fenestration-of-the-lamina-terminalis-on-the-incidence-of-shunt-dependent-hydrocephalus-after-aneurysmal-subarachnoid-hemorrhage-fish-study-protocol-for-a-randomized-controlled-trial
#15
RANDOMIZED CONTROLLED TRIAL
Chuanyuan Tao, Chaofeng Fan, Xin Hu, Junpeng Ma, Lu Ma, Hao Li, Yi Liu, Hong Sun, Min He, Chao You
BACKGROUND: Shunt-dependent hydrocephalus (SDH) is a well-known sequela following aneurysmal hemorrhage, adversely affecting the outcome after securing ruptured aneurysm. Fenestration of lamina terminalis (FLT) creates an anterior ventriculostomy, facilitates cerebrospinal fluid circulation and clot clearance in the basal cistern. However, controversy exists over whether microsurgical FLT during aneurysm repair can decrease the incidence of SDH. AIMS: The study is designed to determine the efficacy of lamina terminalis fenestration on the reduction of SDH after aneurysm clipping...
December 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28011461/antitumor-activity-of-rxdx-105-in-multiple-cancer-types-with-ret-rearrangements-or-mutations
#16
Gang G Li, Romel Somwar, James Joseph, Roger S Smith, Takuo Hayashi, Leenus Martin, Aleksandra Franovic, Annelie Schairer, Eric S Martin, Gregory J Riely, Jason Harris, Shunqi Yan, Ge Wei, Jennifer Oliver, Rupal Patel, Pratik Multani, Marc Ladanyi, Alexander Drilon
PURPOSE: While multikinase inhibitors with RET activity are active in RET-rearranged thyroid and lung cancers, objective response rates are relatively low and toxicity can be substantial. The development of novel RET inhibitors with improved potency and/or reduced toxicity is thus an unmet need. RXDX-105 is a small molecule kinase inhibitor that potently inhibits RET. The purpose of the preclinical and clinical studies was to evaluate the potential of RXDX-105 as an effective therapy for cancers driven by RET alterations...
December 23, 2016: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28002269/efficacy-of-intravitreal-aflibercept-in-macular-telangiectasia-type-1-is-linked-to-the-ocular-angiogenic-profile
#17
Laura Kowalczuk, Alexandre Matet, Ali Dirani, Alejandra Daruich, Aude Ambresin, Irmela Mantel, Richard F Spaide, Natacha Turck, Francine Behar-Cohen
PURPOSE: To evaluate intravitreal aflibercept in macular telangiectasia Type 1 (MacTel 1) patients and measure their ocular angiogenic profile. METHODS: Eight subjects with MacTel 1 refractory to bevacizumab, ranibizumab, or laser therapy and switched to aflibercept were included. Best-corrected visual acuity, central macular thickness, and cystic areas quantified on optical coherence tomography B-scans were assessed during 12 months. Perifoveal capillary densities were measured on optical coherence tomography angiography...
December 20, 2016: Retina
https://www.readbyqxmd.com/read/27989880/spatholobi-caulis-extracts-promote-angiogenesis-in-huvecs-in-vitro-and-in-zebrafish-embryos-in-vivo-via-up-regulation-of-vegfrs
#18
Zhong-Yan Zhou, Li-Yun Huan, Wai-Rong Zhao, Nuo Tang, Yu Jin, Jing-Yi Tang
ETHNOPHARMACOLOGICAL RELEVANCE: Spatholobi Caulis is a traditional blood-activating and stasis-dispelling herb medicine, which has been used to treat diseases related to blood stasis syndrome (BSS) by inhibiting platelet aggregation, stimulate hematopoiesis, etc. It has been demonstrated that pro-angiogenesis could improve BSS. However, the pro-angiogenic activity of Spatholobi Caulis was not well elucidated. AIM OF STUDY: To determine the potential pro-angiogenic activity of Spatholobi Caulis and elucidate its underlying mechanism...
October 27, 2016: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/27965135/effective-targeting-of-gemcitabine-to-pancreatic-cancer-through-peg-cored-flt-1-antibody-conjugated-dendrimers
#19
Kıvılcım Öztürk, Güneş Esendağlı, Mustafa Ulvi Gürbüz, Metin Tülü, Sema Çalış
Tumor-targeted delivery of anticancer drugs using dendrimers has been recognized as a promising strategy to increase efficiency and reduce adverse effects of chemotherapy. Herein, we developed a dendrimer-based drug delivery system targeting Flt-1 (a receptor for vascular endothelial growth factors (VEGF)) receptor to improve therapeutic efficacy of gemcitabine in pancreatic cancer. Synthesized polyethylene glycol (PEG)-cored PAMAM dendrimers, which bear anionic carboxylic acid groups on the surface were modified with PEG chains, which were then conjugated with Flt-1 antibody...
December 10, 2016: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/27958224/comparison-of-positron-emission-tomography-using-2-18f-fluoro-2-deoxy-d-glucose-and-3-deoxy-3-18f-fluorothymidine-in-lung-cancer-imaging
#20
Fu-Li Wang, Ye-Ying Tan, Xiang-Min Gu, Tian-Ran Li, Guang-Ming Lu, Gang Liu, Tian-Long Huo
BACKGROUND: The detection of solitary pulmonary nodules (SPNs) that may potentially develop into a malignant lesion is essential for early clinical interventions. However, grading classification based on computed tomography (CT) imaging results remains a significant challenge. The 2-[18F]-fluoro-2-deoxy-D-glucose (18F-FDG) positron emission tomography (PET)/CT imaging produces both false-positive and false-negative findings for the diagnosis of SPNs. In this study, we compared 18F-FDG and 3-deoxy-3-[18F]-fluorothymidine (18F-FLT) in lung cancer PET/CT imaging...
2016: Chinese Medical Journal
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