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https://www.readbyqxmd.com/read/29351429/removal-of-interscapular-brown-adipose-tissue-increases-aortic-stiffness-despite-normal-systemic-glucose-metabolism-in-mice
#1
Zachary Ian Grunewald, Nathan C Winn, Michelle L Gastecki, Makenzie L Woodford, James R Ball, Sarah A Hansen, Harold S Sacks, Victoria J Vieira-Potter, Jaume Padilla
Brown adipose tissue (BAT) is considered protective against obesity and related cardiometabolic dysfunction. Indeed, activation of BAT improves glucose homeostasis and attenuates cardiovascular disease development. However, whether a reduction in BAT mass perturbs metabolic function and increases risk for cardiovascular disease remains largely unknown. To address this question, C57BL/6J male mice underwent sham or surgical bilateral excision of interscapular BAT (iBATx) and were fed a normal chow or Western diet (WD) for 18 weeks, creating four groups (n=10/group)...
December 20, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/29350646/radiofrequency-ablation-of-osteoid-osteoma
#2
Massimo De Filippo, Umberto Russo, Vito Roberto Papapietro, Francesco Ceccarelli, Francesco Pogliacomi, Enrico Vaienti, Claudia Piccolo, Raffaella Capasso, Assunta Sica, Fabrizio Cioce, Mattia Carbone, Federico Bruno, Carlo Masciocchi, Vittorio Miele
Osteoid osteoma is a benign bone neoplasm with a reported incidence of 2-3% among all bone primary tumors. Although it is a small and benign lesion, it is often cause of patient complaint and discomfort. It is generally characterized by a long lasting, unremitting pain that typically exacerbates at night, often leading to sleep deprivation and functional limitation of the skeletal segment involved, with a significant reduction of patient daily life activities and consequent worsening of the overall quality of life...
January 19, 2018: Acta Bio-medica: Atenei Parmensis
https://www.readbyqxmd.com/read/29350645/developments-in-the-management-of-bone-metastases-with-interventional-radiology
#3
Francesco Arrigoni, Federico Bruno, Luigi Zugaro, Raffaele Natella, Salvatore Cappabianca, Umberto Russo, Vito Roberto Papapietro, Alessandra Splendiani, Ernesto Di Cesare, Carlo Masciocchi, Antonio Barile
Interventional radiology has known an exponential growth in the last years. Technological advances of the last decades, have made it possible to use new treatments on a larger scale, with safe and effective results. They could be considered as palliative treatments for painful lesions but also curative procedures, as single treatment or specially in combination with other techniques (surgery, radiation and oncology therapies, etc.).The main diffuse techniques are those of thermal ablation that destroy the target lesion through the heat; however there are also endovascular therapies that destroy the target tissue thanks to devascularization...
January 19, 2018: Acta Bio-medica: Atenei Parmensis
https://www.readbyqxmd.com/read/29349469/dopant-dependent-crystallization-and-photothermal-effect-of-sb-doped-sno2-nanoparticles-as-stable-theranostic-nanoagents-for-tumor-ablation
#4
Nuo Yu, Chen Peng, Zhaojie Wang, Zixiao Liu, Bo Zhu, Zhigao Yi, Meifang Zhu, Xiaogang Liu, Zhigang Chen
Ideal theranostic nanoagents should be "all-in-one" type nanocrystals that have a single-semiconductor component and all-required properties (such as imaging and photothermal effects), but most semiconductor nanocrystals do not have these required properties. With SnO2 as a model of a typical wide-band semiconductor, we report the tuning from UV-responsive SnO2 to blue SnO2 nanocrystals with imaging ability and a Sb-doping-dependent photothermal effect. Sb-Doped SnO2 nanocrystals were prepared by heating SbCl3 and SnCl4 in benzyl alcohol solution through a facile solvothermal route...
January 19, 2018: Nanoscale
https://www.readbyqxmd.com/read/29344592/ph-responsible-fluorescent-carbon-nanoparticles-for-tumor-selective-theranostics-via-ph-turn-on-off-fluorescence-and-photothermal-effect-in-vivo-and-in-vitro
#5
Eun Bi Kang, Jung Eun Lee, Zihnil Adha Islamy Mazrad, Insik In, Ji Hoon Jeong, Sung Young Park
We developed nanoparticles comprising a photothermal dye (IR825)-loaded carbonized zwitterionic polymer [FNP-I] as "switch-on" pH-responsive fluorescence probes to sense intracellular cancer cells and for near-infrared (NIR) controllable photothermal therapy (PTT) in vivo and in vitro. The fluorescent "off" of FNP-I was activated after reaching the cancer cell environment, where the zwitterionic compartment of FNP lost its hydrophobicity to induce PTT-mediated heat release of IR825 under NIR irradiation in the tumor...
January 18, 2018: Nanoscale
https://www.readbyqxmd.com/read/29343140/a-heterogeneous-tissue-model-for-treatment-planning-for-magnetic-resonance-guided-laser-interstitial-thermal-therapy
#6
Drew Mitchell, Samuel Fahrenholtz, Christopher MacLellan, Dhiego Bastos, Ganesh Rao, Sujit Prabhu, Jeffrey Weinberg, John Hazle, Jason Stafford, David Fuentes
We evaluated a physics-based model for planning for magnetic resonance-guided laser interstitial thermal therapy for focal brain lesions. Linear superposition of analytical point source solutions to the steady-state Pennes bioheat transfer equation simulates laser-induced heating in brain tissue. The line integral of the photon attenuation from the laser source enables computation of the laser interaction with heterogeneous tissue. Magnetic resonance thermometry data sets (n = 31) were used to calibrate and retrospectively validate the model's thermal ablation prediction accuracy, which was quantified by the Dice similarity coefficient (DSC) between model-predicted and measured ablation regions (T > 57°C)...
January 17, 2018: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/29340524/efficacy-of-removal-of-cariogenic-bacteria-and-carious-dentin-by-ablation-using-different-modes-of-er-yag-lasers
#7
A Baraba, L Kqiku, D Gabrić, Ž Verzak, K Hanscho, I Miletić
The primary objective of this in vitro study was to evaluate the efficiency of removal of cariogenic bacteria and carious dentin by ablation using two lasers: fluorescence-feedback controlled (FFC) Er:YAG laser and different pulses of Er:YAG laser based on variable square pulse technology (VSPt). The secondary objective was to measure the temperature during laser ablation of carious tissue. Seventy-two extracted human molars were used in this study. Sixty teeth with carious dentin were randomly divided into four experimental groups according to the treatment for caries removal: group 1: 400 µs (FFC group); group 2: super short pulse (SSP group, 50 µs pulse); group 3: medium short pulse (MSP group, 100 µs pulse); group 4: short pulse (SP group, 300 µs pulse) and one positive control group with no treatment...
January 11, 2018: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/29337089/thermal-field-distributions-of-ablative-experiments-using-cyst-mimicking-phantoms-comparison-of-microwave-and-radiofrequency-ablation
#8
Xiao-Wen Huang, Fang Nie, Zeng-Cheng Wa, Hang-Tong Hu, Qing-Xiu Huang, Huan-Ling Guo, Qiao Zheng, Xiao-Yan Xie, Wei Wang, Ming-De Lu
RATIONALE AND OBJECTIVES: The objective of this study was to explore the thermal field distribution of cystic lesions undergoing microwave ablation (MWA) and radiofrequency ablation (RFA) using in vitro phantoms. MATERIALS AND METHODS: Cyst-mimicking lesions filled with sodium chloride (NaCl) solution in acrylamide phantoms were treated with MWA and RFA in vitro. The radiofrequency electrodes or MWA antennas were implanted in the centers of the artificial cystic lesions...
January 11, 2018: Academic Radiology
https://www.readbyqxmd.com/read/29336757/radiofrequency-thermal-ablation-heat-energy-transfer-in-an-ex-vivo-model
#9
Shivani Thakur, Sandi Lavito, Elizabeth Grobner, Mark Grobner
Little work has been done to consider the temperature changes and energy transfer that occur in the tissue outside the vein with ultrasound-guided vein ablation therapy. In this experiment, a Ex-Vivo model of the human calf was used to analyze heat transfer and energy degradation in tissue surrounding the vein during endovascular radiofrequency ablation (RFA). A clinical vein ablation protocol was used to determine the tissue temperature distribution in 10 per cent agar gel. Heat energy from the radiofrequency catheter was measured for 140 seconds at fixed points by four thermometer probes placed equidistant radially at 0...
December 1, 2017: American Surgeon
https://www.readbyqxmd.com/read/29332078/magnetic-resonance-guided-high-intensity-focused-ultrasound-for-treating-movement-disorders
#10
Young Goo Kim, Eun Jung Kweon, Won Seok Chang, Hyun Ho Jung, Jin Woo Chang
Transcranial magnetic resonance-guided focused ultrasound (MRgFUS) surgery has recently gained favor as a novel, noninvasive alternative to conventional neurosurgery. In contrast to traditional ablative interventions, transcranial MRgFUS surgery is entirely imaging-guided and uses continuous temperature measurements at the target and surrounding tissue taken in real-time. Unlike Gamma Knife radiosurgery, MRgFUS surgery can make a lesion immediately and does not use ionizing radiation. Moreover, since no metallic device is implanted, MR imaging-based diagnosis is not restricted throughout life...
2018: Progress in Neurological Surgery
https://www.readbyqxmd.com/read/29324830/nano-pulse-stimulation-induces-immunogenic-cell-death-in-human-papillomavirus-transformed-tumors-and-initiates-an-adaptive-immune-response
#11
Joseph G Skeate, Diane M Da Silva, Elena Chavez-Juan, Snjezana Anand, Richard Nuccitelli, W Martin Kast
Nano-Pulse Stimulation (NPS) is a non-thermal pulsed electric field modality that has been shown to have cancer therapeutic effects. Here we applied NPS treatment to the human papillomavirus type 16 (HPV 16)-transformed C3.43 mouse tumor cell model and showed that it is effective at eliminating primary tumors through the induction of immunogenic cell death while subsequently increasing the number of tumor-infiltrating lymphocytes within the tumor microenvironment. In vitro NPS treatment of C3.43 cells resulted in a doubling of activated caspase 3/7 along with the translocation of phosphatidylserine (PS) to the outer leaflet of the plasma membrane, indicating programmed cell death activity...
2018: PloS One
https://www.readbyqxmd.com/read/29322853/laser-ablation-of-the-biliary-tree-in-vivo-proof-of-concept-as-potential-treatment-of-unresectable-cholangiocarcinoma
#12
Paola Saccomandi, Giuseppe Quero, Riccardo Gassino, Alfonso Lapergola, Ludovica Guerriero, Michele Diana, Alberto Vallan, Guido Perrone, Emiliano Schena, Guido Costamagna, Jaques Marescaux, Francesco M Di Matteo
OBJECTIVES: The palliative treatment of cholangiocarcinoma is based on stent placement with well-known procedure-related complications. Consequently, alternative energy-based techniques were put forward with controversial long-term results. This study aims to evaluate the safety and effectiveness of biliary tree laser ablation (LA) in terms of: i) absence of perforation, ii) temperature increase, iii) induced thermal damage in in vivo models. MATERIALS AND METHODS: The common bile duct and cystic ducts of two pigs were ablated with a diode laser (circumferential irradiation pattern) for 6 and 3 minutes at 7 W...
January 11, 2018: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/29317375/does-doxorubicin-survive-thermal-ablation-results-of-an-ex-vivo-bench-top-study
#13
Joseph D Morrison, Collin K Schlager, Amanda E Lee, Richard B van Breemen, Ron C Gaba
PURPOSE: We aimed to test the hypothesis that doxorubicin (DOX) survives thermal ablative heating in an ex vivo model of combined transarterial chemoembolization (TACE) and thermal ablation. METHODS: Fresh porcine psoas major muscle (3 samples, 15×10×3 cm) was submerged in aqueous DOX solution (60 µg/mL, 0.1 M) for 24 hours to passively saturate tissue. DOX-infused tissue was then dried and treated with microwave ablation (MWA) using a 2.45 GHz antenna at 65 W for 2, 5, and 10 minutes...
January 2018: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/29316453/degradable-rhenium-trioxide-nanocubes-with-high-localized-surface-plasmon-resonance-absorbance-like-gold-for-photothermal-theranostics
#14
Wenlong Zhang, Guoying Deng, Bo Li, Xinxin Zhao, Tao Ji, Guosheng Song, Zhiyin Xiao, Qing Cao, Jingbo Xiao, Xiaojuan Huang, Guoqiang Guan, Rujia Zou, Xinwu Lu, Junqing Hu
The applications of inorganic theranostic agents in clinical trials are generally limited to their innate non-biodegradability and potential long-term biotoxicity. To address this problem, herein via a straightforward and tailored space-confined on-substrate route, we obtained rhenium trioxide (ReO3) nanocubes (NCs) that display a good biocompatibility and biosafety. Importantly, their aqueous dispersion has high localized surface plasmon resonance (LSPR) absorbance in near-infrared (NIR) region different from previous report, which possibly associates with the charge transfer and structural distortion in hydrogen rhenium bronze (HxReO3), as well as ReO3's cubic shape...
December 27, 2017: Biomaterials
https://www.readbyqxmd.com/read/29316303/feasibility-study-of-modeling-liver-thermal-damage-using-minimally-invasive-optical-method-adequate-for-in-situ-measurement
#15
Jinzhe Zhao, Qi Zhao, Yingxu Jiang, Weitao Li, Yamin Yang, Zhiyu Qian, Jia Liu
Liver thermal ablation techniques have been widely used for the treatment of liver cancer. Kinetic model of damage propagation play an important role for ablation prediction and real-time efficacy assessment. However, practical methods for modeling liver thermal damage are rare. A minimally invasive optical method especially adequate for in situ liver thermal damage modeling is introduced in this paper. Porcine liver tissue was heated by water bath under different temperatures. During thermal treatment, diffuse reflectance spectrum (DRS) of liver was measured by optical fiber and used to deduce reduced scattering coefficient (μ's )...
January 9, 2018: Journal of Biophotonics
https://www.readbyqxmd.com/read/29316291/immunomodulation-characteristics-by-thermal-ablation-therapy-in-cancer-patients
#16
Wuwei Yang, Wei Wang, Bing Liu, Baorang Zhu, Jing Li, Debao Xu, Yanli Ni, Li Bai, Guangxian Liu
AIM: Thermal ablation therapy has recently emerged as a promising noninvasive treatment modality for localized solid malignancies. Except its direct tumor-cell-killing effect on local tumor tissues, the immunomodulatory effect has also long been noticed which too has substantial effect on clinical outcome, but it is complicated. Though much has been investigated and rich evidences have been achieved, the fundamental state and profile of immunomodulation by thermal ablation in cancer patients, its exact mechanism, especially the systematic mechanism, and its effect on antitumor immunity remain unclear...
January 8, 2018: Asia-Pacific Journal of Clinical Oncology
https://www.readbyqxmd.com/read/29312649/microwave-ablation-versus-radiofrequency-ablation-for-the-treatment-of-pulmonary-tumors
#17
Feng Shi, Guangxiao Li, Zejian Zhou, Rongde Xu, Weike Li, Wenhang Zhuang, Zide Chen, Xiaoming Chen
To retrospectively compare the efficacy and safety of radiofrequency ablation (RFA) and microwave ablation (MWA) in the treatment of pulmonary tumors, a total of 75 patients with lung tumor who underwent thermal ablation therapy in Guangdong General Hospital into the study from March 2007 to December 2014 were enrolled. Of the patients, 43 received radiofrequency ablation and 32 received microwaves ablation. The response rates, overall survival (OS), and complications rates between the RFA group and MWA group were compared...
December 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/29306849/verbal-learning-and-memory-outcome-in-selective-amygdalohippocampectomy-versus-temporal-lobe-resection-in-patients-with-hippocampal-sclerosis
#18
Mette Thrane Foged, Kirsten Vinter, Louise Stauning, Troels W Kjær, Brice Ozenne, Sándor Beniczky, Olaf B Paulson, Flemming Find Madsen, Lars H Pinborg
PURPOSE: With the advent of new very selective techniques like thermal laser ablation to treat drug-resistant focal epilepsy, the controversy of resection size in relation to seizure outcome versus cognitive deficits has gained new relevance. The purpose of this study was to test the influence of the selective amygdalohippocampectomy (SAH) versus nonselective temporal lobe resection (TLR) on seizure outcome and cognition in patients with mesial temporal lobe epilepsy (MTLE) and histopathological verified hippocampal sclerosis (HS)...
January 4, 2018: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29303406/eus-dating-with-laser-ablation-against-the-caudate-lobe-or-left-liver-tumors-a-win-win-proposition
#19
Tian'an Jiang, Guo Tian, Haiwei Bao, Fen Chen, Zhuang Deng, Ju Li, Weilu Chai
Endoscopic ultrasound (EUS) have been not only a diagnostic tool, but also available in interventional therapy, which often previously needed surgical approaches to achieve. The study aimed to evaluate the effectiveness and safety of EUS-guided Nd:YAG laser ablation in unresectable tumors of the caudate lobe and left liver. We discussed ten cases of the caudate lobe and left liver tumors underwent laser ablation with EUS guidance. And we also have reviewed previous publication of EUS-guided thermal ablation for liver tumors in several decade years...
January 5, 2018: Cancer Biology & Therapy
https://www.readbyqxmd.com/read/29301446/real-time-estimation-of-lesion-depth-and-control-of-radiofrequency-ablation-within-ex-vivo-animal-tissues-using-a-neural-network
#20
Yearnchee Curtis Wang, Terence Chee-Hung Chan, Alan Varteres Sahakian
BACKGROUND: Radiofrequency ablation (RFA), a method of inducing thermal ablation (cell death), is often used to destroy tumours or potentially cancerous tissue. Current techniques for RFA estimation (electrical impedance tomography, Nakagami ultrasound, etc.) require long compute times (≥ 2 s) and measurement devices other than the RFA device. This study aims to determine if a neural network (NN) can estimate ablation lesion depth for control of bipolar RFA using complex electrical impedance - since tissue electrical conductivity varies as a function of tissue temperature - in real time using only the RFA therapy device's electrodes...
January 4, 2018: International Journal of Hyperthermia
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