keyword
MENU ▼
Read by QxMD icon Read
search

Pulmonary fluorescence imaging

keyword
https://www.readbyqxmd.com/read/29626619/a-brief-report-localization-of-pulmonary-ground-glass-opacities-with-folate-receptor-targeted-intraoperative-molecular-imaging
#1
Jarrod D Predina, Andrew Newton, Christopher Corbett, Leilei Xia, Lydia Frenzel Sulyok, Michael Shin, Charuhas Deshpande, Leslie Litzky, Eduardo Barbosa, Philip S Low, John C Kucharczuk, Sunil Singhal
PURPOSE: Intraoperative localization and resection of ill-defined pulmonary ground-glass opacities (GGOs) during minimally invasive pulmonary resection is technically challenging. Current preoperative techniques to facilitate GGO localization include microcoil and hook-wire placement, but have logistic limitations, carry safety concerns, and do not help with margin assessment. In this clinical trial, we explore an alternative method involving near-infrared molecular imaging using a folate receptor-targeted agent, OTL38, to improve localization and margin confirmation of GGOs...
April 4, 2018: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/29578500/practical-considerations-in-studying-metastatic-lung-colonization-in-osteosarcoma-using-the-pulmonary-metastasis-assay
#2
Michael M Lizardo, Poul H Sorensen
The pulmonary metastasis assay (PuMA) is an ex vivo lung explant and closed cell culture system that permits researchers to study the biology of lung colonization in osteosarcoma (OS) by fluorescence microscopy. This article provides a detailed description of the protocol, and discusses examples of obtaining image data on metastatic growth using widefield or confocal fluorescence microscopy platforms. The flexibility of the PuMA model permits researchers to study not only the growth of OS cells in the lung microenvironment, but also to assess the effects of anti-metastatic therapeutics over time...
March 12, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29568374/an-open-label-trial-of-folate-receptor-targeted-intraoperative-molecular-imaging-to-localize-pulmonary-squamous-cell-carcinomas
#3
Jarrod D Predina, Andrew D Newton, Leilei Xia, Christopher Corbett, Courtney Connolly, Michael Shin, Lydia Frezel Sulyok, Leslie Litzky, Charuhas Deshpande, Shuming Nie, Sumith A Kularatne, Philip S Low, Sunil Singhal
Background: Clinical applicability of folate receptor-targeted intraoperative molecular imaging (FR-IMI) has been established for surgically resectable pulmonary adenocarcinoma. A role for FR-IMI in other lung cancer histologies has not been studied. In this study, we evaluate feasibility of FR-IMI in patients undergoing pulmonary resection for squamous cell carcinomas (SCCs). Methods: In a human clinical trial (NCT02602119), twelve subjects with pulmonary SCCs underwent FR-IMI with a near-infrared contrast agent that targets the folate receptor-α (FRα), OTL38...
March 2, 2018: Oncotarget
https://www.readbyqxmd.com/read/29445211/bronchoscopic-fibered-confocal-fluorescence-microscopy-for-longitudinal-in-vivo-assessment-of-pulmonary-fungal-infections-in-free-breathing-mice
#4
Liesbeth Vanherp, Jennifer Poelmans, Amy Hillen, Kristof Govaerts, Sarah Belderbos, Tinne Buelens, Katrien Lagrou, Uwe Himmelreich, Greetje Vande Velde
Respiratory diseases, such as pulmonary infections, are an important cause of morbidity and mortality worldwide. Preclinical studies often require invasive techniques to evaluate the extent of infection. Fibered confocal fluorescence microscopy (FCFM) is an emerging optical imaging technique that allows for real-time detection of fluorescently labeled cells within live animals, thereby bridging the gap between in vivo whole-body imaging methods and traditional histological examinations. Previously, the use of FCFM in preclinical lung research was limited to endpoint observations due to the invasive procedures required to access lungs...
February 14, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29429330/ferritin-nanocages-with-biologically-orthogonal-conjugation-for-vascular-targeting-and-imaging
#5
Makan Khoshnejad, Colin Fred Greineder, Katherine W Pulsipher, Carlos H Villa, Burcin Altun, Daniel C Pan, Andrew Tsourkas, Ivan J Dmochowski, Vladimir Muzykantov
Genetic incorporation of biologically orthogonal functional groups into macromolecules has the potential to yield efficient, controlled, reproducible, site-specific conjugation of affinity ligands, contrast agents, or therapeutic cargoes. Here, we applied this approach to ferritin, a ubiquitous iron-storage protein that self-assembles into multimeric nanocages with remarkable stability, size uniformity (12 nm), and endogenous capacity for loading and transport of a variety of inorganic and organic cargoes. The unnatural amino acid, 4-azidophenylalanine (4-AzF), was incorporated at different sites in the human ferritin light chain (hFTL) to allow site-specific conjugation of alkyne-containing small molecules or affinity ligands to the exterior surface of the nanocage...
February 10, 2018: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/29397932/a-phase-i-clinical-trial-of-targeted-intraoperative-molecular-imaging-for-pulmonary%C3%A2-adenocarcinomas
#6
Jarrod D Predina, Andrew D Newton, Jane Keating, Ashley Dunbar, Courtney Connolly, Michael Baldassari, Jack Mizelle, Leilei Xia, Charuhas Deshpande, John Kucharczuk, Philip S Low, Sunil Singhal
BACKGROUND: Intraoperative identification of pulmonary nodules, particularly small lesions, can be challenging. We hypothesize that folate receptor-targeted intraoperative molecular imagining can be safe and improve localization of pulmonary nodules during resection. METHODS: Twenty subjects with biopsy-proven pulmonary adenocarcinomas were enrolled in a phase I clinical trial to test the safety and feasibility of OTL38, a novel folate receptor-α (FRα) targeted optical contrast agent...
February 1, 2018: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29383594/detection-of-alternative-subpleural-lymph-flow-pathways-using-indocyanine-green-fluorescence
#7
Aya Harada Takeda, Yui Watanabe, Toshiyuki Nagata, Masaya Aoki, Tadashi Umehara, Soichi Suzuki, Go Kamimura, Kazuhiro Wakida, Tsunayuki Otsuka, Naoya Yokomakura, Kota Kariatsumari, Koichi Sakasegawa, Yoshihiro Nakamura, Masami Sato
PURPOSE: Pulmonary lymphatic fluid predominately flows along the bronchi. However, there are reports suggesting that an alternative lymphatic pathway exist, which may result in skip metastases. The aim of this study was to evaluate the subpleural lymph flow in vivo using indocyanine green (ICG) fluorescence. METHODS: One hundred cases were enrolled. ICG was injected into the macroscopically healthy subpleural space. Intraoperative fluorescence images were then observed in real time...
January 30, 2018: Surgery Today
https://www.readbyqxmd.com/read/29329549/near-infrared-dye-marking-for-thoracoscopic-resection-of-small-sized-pulmonary-nodules-comparison-of-percutaneous-and-bronchoscopic-injection-techniques
#8
Takashi Anayama, Kentaro Hirohashi, Ryohei Miyazaki, Hironobu Okada, Nobutaka Kawamoto, Marino Yamamoto, Takayuki Sato, Kazumasa Orihashi
BACKGROUND: Minimally invasive video-assisted thoracoscopic surgery for small-sized pulmonary nodules is challenging, and image-guided preoperative localisation is required. Near-infrared indocyanine green fluorescence is capable of deep tissue penetration and can be distinguished regardless of the background colour of the lung; thus, indocyanine green has great potential for use as a near-infrared fluorescent marker in video-assisted thoracoscopic surgery. METHODS: Thirty-seven patients with small-sized pulmonary nodules, who were scheduled to undergo video-assisted thoracoscopic wedge resection, were enrolled in this study...
January 12, 2018: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/29311495/fluorescent-imaging-analysis-for-distribution-of-fluorescent-dye-labeled-or-encapsulated-liposome-in-monocrotaline-induced-pulmonary-hypertension-model-rat
#9
Yo Muraki, Midori Yamasaki, Hirohisa Takeuchi, Kimio Tohyama, Noriyasu Sano, Takanori Matsuo
Pulmonary hypertension (PH) is a life-threatening lung disease. Despite the availability of several approved drugs, the development of a new treatment method is needed because of poor prognosis. Tissue selective drug delivery systems can avoid the adverse effects of current therapy and enhance efficacy. We evaluated the possibility of delivering drugs to the lungs of a PH rat model using fluorescence dye-labeled nanosized liposomes. To evaluate the tissue distribution following systemic exposure, fluorescent dye-labeled, 40-180 nm liposomes with and without polyethylene glycol (PEG) were intravenously administered to a monocrotaline-induced PH (MCT) rat model and tissue fluorescence was measured...
March 1, 2018: Chemical & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29296483/single-shot-three-dimensional-fluorescence-microscopy-with-a-spatially-rotating-point-spread-function
#10
Zhaojun Wang, Yanan Cai, Yansheng Liang, Xing Zhou, Shaohui Yan, Dan Dan, Piero R Bianco, Ming Lei, Baoli Yao
A wide-field fluorescence microscope with a double-helix point spread function (PSF) is constructed to obtain the specimen's three-dimensional distribution with a single snapshot. Spiral-phase-based computer-generated holograms (CGHs) are adopted to make the depth-of-field of the microscope adjustable. The impact of system aberrations on the double-helix PSF at high numerical aperture is analyzed to reveal the necessity of the aberration correction. A modified cepstrum-based reconstruction scheme is promoted in accordance with properties of the new double-helix PSF...
December 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/29290827/local-intratracheal-delivery-of-perfluorocarbon-nanoparticles-to-lung-cancer-demonstrated-with-magnetic-resonance-multimodal-imaging
#11
Lina Wu, Xiaofei Wen, Xiance Wang, Chunan Wang, Xilin Sun, Kai Wang, Huiying Zhang, Todd Williams, Allen J Stacy, Junjie Chen, Anne H Schmieder, Gregory M Lanza, Baozhong Shen
Eighty percent of lung cancers originate as subtle premalignant changes in the airway mucosal epithelial layer of bronchi and alveoli, which evolve and penetrate deeper into the parenchyma. Liquid-ventilation, with perfluorocarbons (PFC) was first demonstrated in rodents in 1966 then subsequently applied as lipid-encapsulated PFC emulsions to improve pulmonary function in neonatal infants suffering with respiratory distress syndrome in 1996. Subsequently, PFC nanoparticles (NP) were extensively studied as intravenous (IV) vascular-constrained nanotechnologies for diagnostic imaging and targeted drug delivery applications...
2018: Theranostics
https://www.readbyqxmd.com/read/29290809/near-infrared-intraoperative-imaging-of-thoracic-sympathetic-nerves-from-preclinical-study-to-clinical-trial
#12
Kunshan He, Jian Zhou, Fan Yang, Chongwei Chi, Hao Li, Yamin Mao, Bengang Hui, Kun Wang, Jie Tian, Jun Wang
The sympathetic nervous system controls and regulates the activities of the heart and other organs. Sympathetic nervous system dysfunction leads to disease. Therefore, intraoperative real-time imaging of thoracic sympathetic nerves (ITSN) would be of great clinical significance for diagnosis and therapy. The aim of this experimental study was to evaluate the feasibility and validity of intraoperative ITSN using indocyanine green (ICG). METHODS: ITSN using ICG was performed on 10 rabbits to determine its feasibility...
2018: Theranostics
https://www.readbyqxmd.com/read/29286639/live-imaging-of-label-free-graphene-oxide-reveals-critical-factors-causing-oxidative-stress-mediated-cellular-responses
#13
Sandra Vranic, Artur Filipe Rodrigues, Maurizio Buggio, Leon Newman, Michael R H White, David G Spiller, Cyrill Bussy, Kostas Kostarelos
The interest in graphene and its translation into commercial products has been expanding at a high pace. Based on previously described pulmonary safety concerns for carbon nanomaterials, there is a great need to define parameters guiding interactions between graphene-based materials and the pulmonary system. The aim of the present study was to determine the importance of two critical parameters: lateral dimensions of the material and coating with proteins in relation to each other and their pulmonary impact...
February 27, 2018: ACS Nano
https://www.readbyqxmd.com/read/29273069/single-walled-carbon-nanotubes-modulate-pulmonary-immune-responses-and-increase-pandemic-influenza-a-virus-titers-in-mice
#14
Hao Chen, Xiao Zheng, Justine Nicholas, Sara T Humes, Julia C Loeb, Sarah E Robinson, Joseph H Bisesi, Dipesh Das, Navid B Saleh, William L Castleman, John A Lednicky, Tara Sabo-Attwood
BACKGROUND: Numerous toxicological studies have focused on injury caused by exposure to single types of nanoparticles, but few have investigated how such exposures impact a host's immune response to pathogen challenge. Few studies have shown that nanoparticles can alter a host's response to pathogens (chiefly bacteria) but there is even less knowledge of the impact of such particles on viral infections. In this study, we performed experiments to investigate if exposure of mice to single-walled carbon nanotubes (SWCNT) alters immune mechanisms and viral titers following subsequent influenza A virus (IAV) infection...
December 22, 2017: Virology Journal
https://www.readbyqxmd.com/read/29259252/image-guided-fluorescence-endomicroscopy-from-macro-to-micro-imaging-of-radiation-induced-pulmonary-fibrosis
#15
Jessica R Perez, Norma Ybarra, Frederic Chagnon, Monica Serban, Gabriel Pare, Olivier Lesur, Jan Seuntjens, Issam El Naqa
Radiation-induced pulmonary fibrosis (RIPF) is a debilitating side effect of radiation therapy (RT) of several cancers including lung and breast cancers. Current clinical methods to assess and monitor RIPF involve diagnostic computed tomography (CT) imaging, which is restricted to anatomical macroscopic changes. Confocal laser endomicroscopy (CLE) or fluorescence endomicroscopy (FE) in combination with a fibrosis-targeted fluorescent probe allows to visualize RIPF in real-time at the microscopic level. However, a major limitation of FE imaging is the lack of anatomical localization of the endomicroscope within the lung...
December 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29241970/identification-of-a-folate-receptor-targeted-near-infrared-molecular-contrast-agent-to-localize-pulmonary-adenocarcinomas
#16
Jarrod D Predina, Andrew D Newton, Courtney Connolly, Ashley Dunbar, Michael Baldassari, Charuhas Deshpande, Edward Cantu, Jason Stadanlick, Sumith A Kularatne, Philip S Low, Sunil Singhal
Non-small cell lung cancer (NSCLC) is the number one cancer killer in the United States. Despite attempted curative surgical resection, nearly 40% of patients succumb to recurrent disease. High recurrence rates may be partially explained by data suggesting that 20% of NSCLC patients harbor synchronous disease that is missed during resection. In this report, we describe the use of a novel folate receptor-targeted near-infrared contrast agent (OTL38) to improve the intraoperative localization of NSCLC during pulmonary resection...
February 7, 2018: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/29200901/the-bifunctional-effect-of-propofol-on-thromboxane-agonist-u46619-induced-vasoconstriction-in-isolated-human-pulmonary-artery
#17
Ning Hao, Wang Zhaojun, Sujuan Kuang, Guangyan Zhang, Chunyu Deng, Jue Ma, Jianxiu Cui
Propofol is known to cause vasorelaxation of several systemic vascular beds. However, its effect on the pulmonary vasculature remains controversial. In the present study, we investigated the effects of propofol on human pulmonary arteries obtained from patients who had undergone surgery. Arterial rings were mounted in a Multi-Myograph system for measurement of isometric forces. U46619 was used to induce sustained contraction of the intrapulmonary arteries, and propofol was then applied (in increments from 10-300 µM)...
November 2017: Korean Journal of Physiology & Pharmacology
https://www.readbyqxmd.com/read/29049837/clinical-application-of-projection-mapping-technology-for-surgical-resection-of-lung-metastasis
#18
Toyofumi F Chen-Yoshikawa, Etsuro Hatano, Atsushi Yoshizawa, Hiroshi Date
Indocyanine green fluorescent image-guided surgery was developed to identify primary and metastatic nodules of various malignancies. However, currently, surgeons need to identify the fluorescent image on a monitor, which impedes surgical procedures. Herein, we developed a novel projection mapping device that can cast the real-time fluorescent image onto the surface of the targeted organ. We performed surgical resection of a lung metastasis of hepatoblastoma using this technique. The projection mapping technique clearly detected the pulmonary lesion, and no other lesions were identified in the ipsilateral thorax...
July 28, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29035996/radioguided-occult-lesion-localization-technical-procedures-and-clinical-applications
#19
Gianpiero Manca, Sara Mazzarri, Domenico Rubello, Elisa Tardelli, Roberto C Delgado-Bolton, Francesco Giammarile, Manuela Roncella, Duccio Volterrani, Patrick M Colletti
PURPOSE: Regarding radioguided surgery, the concept of "radioguided occult lesion localization" (ROLL) is based on both preoperative interventional imaging and intraoperative radioguided detection of a clinically occult neoplastic lesion. METHODS: This methodology consists in the direct administration into the lesion of Tc-macroaggregated human albumin formed by relatively large particles retained at the injection site, which direct radioguided excisional biopsy...
December 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28994575/thrombin-activatable-microbubbles-as-potential-ultrasound-contrast-agents-for-the-detection-of-acute-thrombosis
#20
Jacques Lux, Alexander M Vezeridis, Kenneth Hoyt, Stephen R Adams, Amanda M Armstrong, Shashank R Sirsi, Robert F Mattrey
Acute deep vein thrombosis (DVT) is the formation of a blood clot in the deep veins of the body that can lead to fatal pulmonary embolism. Acute DVT is difficult to distinguish from chronic DVT by ultrasound (US), the imaging modality of choice, and is therefore treated aggressively with anticoagulants, which can lead to internal bleeding. Here we demonstrate that conjugating perfluorobutane-filled (PFB-filled) microbubbles (MBs) with thrombin-sensitive activatable cell-penetrating peptides (ACPPs) could lead to the development of contrast agents that detect acute thrombosis with US imaging...
November 1, 2017: ACS Applied Materials & Interfaces
keyword
keyword
52492
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"