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https://www.readbyqxmd.com/read/27925417/effects-of-temperature-on-multiparametric-evaluation-of-hindlimb-ischemia-with-dynamic-fluorescence-imaging
#1
Wenjuan Cai, Huizhi Guang, Chuangjian Cai, Jianwen Luo
Quantitative evaluation of hindlimb ischemia is essential for early diagnosis and therapy of peripheral arterial disease (PAD). Dynamic imaging using near-infrared (NIR) fluorophore indocyanine green (ICG) is a noninvasive and effective tool to monitor multiple vascular parameters including perfusion rate (PR), perfusion vascular density (PVD) and hemodynamics. It has been previously demonstrated that temperature changes could lead to significant variations of blood flow rate and vascular perfusion. In this paper, multiparametric evaluation of hindlimb ischemia was performed at different temperatures...
December 7, 2016: Journal of Biophotonics
https://www.readbyqxmd.com/read/27918980/a-case-of-incarcerated-femoral-hernia-with-intestinal-blood-flow-assessment-by-brightfield-full-color-near-infrared-fluorescence-camera-report-of-a-case
#2
Shunjin Ryu, Masashi Yoshida, Hironori Ohdaira, Nobuhiro Tsutsui, Norihiko Suzuki, Eisaku Ito, Keigo Nakajima, Satoru Yanagisawa, Masaki Kitajima, Yutaka Suzuki
INTRODUCTION: Indocyanine green (ICG) fluorescence has been reported for examining intestinal blood flow (IBF), but not in the case of bowel released from entrapment in a femoral hernia. We report the case of a patient with incarcerated obturator femoral hernia in whom the bowel was preserved after evaluation of IBF with ICG fluorescence using a brightfield full-color near-infrared fluorescence camera. PRESENTATION OF CASE: A woman in her 60s was diagnosed with incarcerated femoral hernia and underwent surgery...
November 22, 2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/27916035/-microsurgical-management-and-outcomes-of-intramedullary-spinal-arteriovenous-malformations-a-report-of-14-cases
#3
L Zhang, W Q Jia, J Yang
Objective: To investigate the clinical features, microsurgical management and outcomes of intramedullary spinal arteriovenous malformations (AVM). Methods: A series of 14 patients (10 male, 4 female; mean age (39.1±17.2) years ranged from 16 to 72 years) with intramedullary spinal AVM who underwent microsurgical treatment from November 2008 to April 2015 in Department of Neurosurgery at Beijing Tiantan Hospital were retrospectively reviewed. The location of the AVM included cervical (n=6), thoracic (n=3), cervicothoracic (n=2), and conus medullaris (n=3)...
December 1, 2016: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/27914174/mathematical-detection-of-aortic-valve-opening-b-point-in-impedance-cardiography-a-comparison-of-three-popular-algorithms
#4
Javier Rodríguez Árbol, Pandelis Perakakis, Alba Garrido, José Luis Mata, M Carmen Fernández-Santaella, Jaime Vila
The preejection period (PEP) is an index of left ventricle contractility widely used in psychophysiological research. Its computation requires detecting the moment when the aortic valve opens, which coincides with the B point in the first derivative of impedance cardiogram (ICG). Although this operation has been traditionally made via visual inspection, several algorithms based on derivative calculations have been developed to enable an automatic performance of the task. However, despite their popularity, data about their empirical validation are not always available...
December 3, 2016: Psychophysiology
https://www.readbyqxmd.com/read/27913886/influence-of-vessel-stenosis-on-indocyanine-green-fluorescence-intensity-assessed-by-near-infrared-fluorescence-angiography
#5
Masaki Yamamoto, Hideaki Nishimori, Takashi Fukutomi, Takemi Handa, Kazuki Kihara, Miwa Tashiro, Takayuki Sato, Kazumasa Orihashi
PURPOSE: Although useful for visualizing blood flow during revascularization surgery, the permeability of near-infrared fluorescence (NIR) angiography using indocyanine green (ICG) does not allow for vessel stenosis visualization. We hypothesized that changes in ICG fluorescence intensity reflect vessel stenosis, and evaluated the influence of stenosis on blood flow by ex vivo experimentation. METHODS: The vessel stenosis model comprised a silicon tube, a graft occluder, and artificial blood...
December 2, 2016: Surgery Today
https://www.readbyqxmd.com/read/27909720/tetrandrine-inhibits-glioma-stem-like-cells-by-repressing-%C3%AE-catenin-expression
#6
Yong Zhang, Yu-Lin Wen, Ji-Wei Ma, Jie-Cheng Ye, Xiao Wang, Jian-Xian Huang, Chao-Yue Meng, Xiao-Ze Xu, Shao-Xiang Wang, Xue-Yun Zhong
Cancer stem cells (CSCs) in glioma are often responsible for relapse and resistance to therapy. The purpose of the present study was to confirm the self-renewal and migration inhibitory effects of tetrandrine (Tet), which is a compound extracted from the dried root of Stephania tetrandra S. Moore, toward glioma stem-like cells (GSLCs) and to examine the associated molecular mechanisms. Using a neurosphere culture technique, we enriched the GSLC population from the human glioblastoma cell lines U87 and U251...
November 23, 2016: International Journal of Oncology
https://www.readbyqxmd.com/read/27909239/affinity-of-indocyanine-green-in-the-detection-of-colorectal-peritoneal-carcinomatosis-the-role-of-enhanced-permeability-and-retention-effect
#7
Alexandre Filippello, Jack Porcheron, Jean Philippe Klein, Michèle Cottier, Gabriele Barabino
Indocyanine green (ICG) is increasingly being used in digestive oncology. In colorectal cancer, ICG can be used to detect lymph node metastasis and hepatic metastasis on the surface of the liver. In peritoneal carcinomatosis, it was previously suspected that the diffusion of ICG in the tumor mass was due to the enhanced permeability and retention effect; however, this phenomenon has not been clearly demonstrated. Using bevacizumab, an antibody directed against vascular endothelial growth factor that consequently inhibits neoangiogenesis, we sought to confirm the mode of ICG diffusion...
November 30, 2016: Surgical Innovation
https://www.readbyqxmd.com/read/27905950/use-of-indocyanine-green-and-the-hypereye-system-for-detecting-sentinel-lymph-nodes-in-breast-cancer-within-a-population-of-european-patients-a-pilot-study
#8
Oldřich Coufal, Vuk Fait
BACKGROUND: Certain studies suggest that using indocyanine green (ICG) could be comparable with using radioisotopes (RI) in detecting sentinel lymph nodes (SLNs) in breast cancer. A number of these studies were performed in Asia. The objective of our pilot study was to evaluate within a European population of breast cancer patients the detection rate of SLNs using ICG and the HyperEye system and the concordance in SLNs detected using this method and the standard method involving RI and a gamma probe...
December 1, 2016: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/27901637/angiographic-evaluation-of-inflammation-in-atopic-keratoconjunctivitis
#9
Bernhard Steger, Vito Romano, Stephen B Kaye
PURPOSE: Grading of disease activity in patients with atopic keratoconjunctivitis (AKC) is limited by intra- and inter-observer variability. The aim of this study was to identify angiographic parameters to help evaluate inflammation and disease activity. METHODS: In 12 patients (4 with active, 2 with inactive AKC, and 6 controls), disease activity were assessed using a validated biomicroscopic grading scale. Imaging of upper tarsal conjunctiva was undertaken using color photography, fluorescein (FA) and indocyanine green angiography (ICGA)...
November 30, 2016: Ocular Immunology and Inflammation
https://www.readbyqxmd.com/read/27899230/experimental-zika-virus-infection-induces-spinal-cord-injury-and-encephalitis-in-newborn-swiss-mice
#10
Natália C C A Fernandes, Juliana S Nogueira, Rodrigo A Réssio, Cinthya S Cirqueira, Lidia M Kimura, Karolina R Fernandes, Mariana S Cunha, Renato P Souza, Juliana M Guerra
A widespread epidemic of Zika virus (ZIKV) infection was reported in 2015 in South and Central America, with neurological symptons including meningoencephalitis and Guillain-Barré syndrome in adults, besides an apparent increased incidence of microcephaly in infants born to infected mothers. It is becoming a necessity to have a trustworthy animal model to better understand ZIKV infection. In this study we used newborn white Swiss mice as a model to investigate the ZIKV strain recently isolated in Brazil. ZIKV was inoculated via intracerebral and subcutaneous routes and analysed through gross histopathology and immunohistochemistry...
November 26, 2016: Experimental and Toxicologic Pathology: Official Journal of the Gesellschaft Für Toxikologische Pathologie
https://www.readbyqxmd.com/read/27899040/clinical-role-of-fluorescence-imaging-in-colorectal-surgery-a-review
#11
Ido Mizrahi, Steven D Wexner
Anastomotic leak (AL) after colorectal surgery is a devastating complication; decreased blood perfusion is an important risk factor. Surgeons rely on subjective measures to assess bowel perfusion. Fluorescence imaging (FI) with indocyanine green (ICG) provides a real-time objective assessment of intestinal perfusion. Areas covered: A PubMed search using the terms 'fluorescence imaging', 'indocyanine green', 'colon and rectal surgery' was undertaken. Sixteen articles between 2010 to present were identified. Main outcomes were leak rate reduction, change in surgical plan, and technical feasibility...
December 5, 2016: Expert Review of Medical Devices
https://www.readbyqxmd.com/read/27897297/facile-one-pot-synthesis-of-fe3o4-chitosan-nanospheres-for-mri-and-fluorescence-imaging-guided-chemo-photothermal-combinational-cancer-therapy
#12
Zhifang Gao, Xijian Liu, Yeying Wang, Guoying Deng, Feng Zhou, Qian Wang, Lijuan Zhang, Jie Lu
Multifunctional nanoplatforms that integrate imaging and chemo-photothermal therapy for highly efficient cancer diagnostics and therapeutics have gained great interest in recent years. Herein, we designed and synthesized biodegradable and biocompatible magnetic chitosan nanospheres (Fe3O4@CS) by a facile one-pot synthesis method. Doxorubicin (DOX, an anticancer drug) and indocyanine green (ICG) can be co-loaded into the Fe3O4@CS nanospheres (Fe3O4@CS-ICG/DOX nanocomposites) by virtue of the mesoporous structure and electrostatic interactions of CS...
November 29, 2016: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/27895581/evaluation-of-near-infrared-dyes-as-markers-of-p-glycoprotein-activity-in-tumors
#13
Inessa Semenenko, Emma Portnoy, Mohammed Aboukaoud, Serge Guzy, Miriam Shmuel, Gal Itzhak, Sara Eyal
Aim: The multidrug resistance protein 1 (MDR1; P-glycoprotein) has been associated with efflux of chemotherapeutic agents from tumor cells and with poor patient prognosis. This study evaluated the feasibility of non-invasive, non-radioactive near infrared (NIR) imaging methodology for detection of MDR1 functional activity in tumors. Methods: Initial accumulation assays were conducted in MDR1-overexpressing MDCK cells (MDCK-MDR1) and control MDCK cells (MDCK-CT) using the NIR dyes indocyanine green (ICG), IR-783, IR-775, rhodamine 800, XenoLight DiR, and Genhance 750, at 0...
2016: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/27894812/enhanced-legumain-recognition-and-nir-controlled-released-of-cisplatin-indocyanine-nanosphere-against-gastric-carcinoma
#14
Tianyi Shi, Lianshuai Gu, Yu Sun, Senlin Wang, Chaoqun You, Xiangyang Zhang, Jin Zhu, Baiwang Sun
Cisplatin-therapy has faced limitations in the gastric cancer therapy. To settle the bottleneck, enhanced specificity and controlled-release property are choosen. We synthesize cisplatin and indocyanine green (ICG) loaded PLGA-(DSPE-PEG2000) nanoparticles, which is abbreviated as CINPs. And we conjugate the Gly-Cys-Gly-Ala-Ala-Asn-Leu (GCGAANL) heptapeptide upon the surface of CINPs, the product is abbreviated as ACINPs. ACINPs with nearly 110nm exhibit good monodispersity and size stability. The EE (efficiency of encapsulation) and LE (loading of encapsulation) of cisplatin loaded into ACINPs are optimized as 29...
November 25, 2016: European Journal of Pharmacology
https://www.readbyqxmd.com/read/27894166/the-detection-of-sentinel-lymph-nodes-in-laparoscopic-surgery-for-uterine-cervical-cancer-using-99m-technetium-tin-colloid-indocyanine-green-and-blue-dye
#15
Tomohito Tanaka, Yoshito Terai, Keisuke Ashihara, Satoshi Tsunetoh, Hiroyuki Akagi, Takashi Yamada, Masahide Ohmichi
OBJECTIVE: Our objective was to determine the feasibility and detection rates and clarify the most effective combination of injected tracer types for sentinel lymph node (SLN) mapping in uterine cervical cancer in patients who have undergone laparoscopic surgery or neoadjuvant chemotherapy (NAC). METHODS: A total of 119 patients with cervical cancer underwent SLN biopsy at radical hysterectomy using three types of tracers. The various factors related to side-specific detection rate, sensitivity, and false negative (FN) rate were analyzed...
November 1, 2016: Journal of Gynecologic Oncology
https://www.readbyqxmd.com/read/27892715/incorporation-of-chemotherapeutic-agent-and-photosensitizer-in-a-low-temperature-sensitive-liposome-for-effective-chemo-hyperthermic-anticancer-activity
#16
Hanh Thuy Nguyen, Tuan Hiep Tran, Raj Kumar Thapa, Tung Thanh Pham, Jee-Heon Jeong, Yu Seok Youn, Han-Gon Choi, Chul Soon Yong, Jong Oh Kim
OBJECTIVES: In this study, we combined chemo- and hyperthermia therapy in a low temperature-sensitive liposome (LTSL) for potential cancer treatment. METHODS: Docetaxel (DOC) and indocyanine green (ICG) as a therapeutic agent and photosensitizer, respectively, were incorporated in a low temperature-sensitive liposome (LTSL/DI). Nanoparticles were evaluated for the physicochemical characterizations, in vitro uptake and cytotoxicity, and furthermore in vivo anticancer activity...
November 28, 2016: Expert Opinion on Drug Delivery
https://www.readbyqxmd.com/read/27885675/intratissue-lymphovenous-communications-in-the-mechanism-of-action-of-vascularized-lymph-node-transfer
#17
María Miranda Garcés, Gemma Pons, Rosa Mirapeix, Jaume Masià
BACKGROUND AND OBJECTIVES: Vascularized lymph node transfer (VLNT) as a surgical treatment for cancer-related lymphedema has shown beneficial effects. The mechanism of action of this procedure involves lymphangiogenesis and lymphovenous communications (LVC) within the lymph nodes. We propose intratissue LVC as an additional element responsible for drainage of lymph to blood in the flap and examine this hypothesis in the current study. METHODS: This prospective study determined the passage of lymph to the venous system via intratissue LVC in 26 free flaps used for breast reconstruction...
November 25, 2016: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/27884637/phototheranostic-nanoplatform-based-on-a-single-cyanine-dye-for-image-guided-combinatorial-phototherapy
#18
Tony Duong, Xiaoning Li, Bona Yang, Canan Schumann, Hassan A Albarqi, Olena Taratula, Oleh Taratula
This study represents a novel phototheranostic nanoplatform based on the near-infrared (NIR) heptamethine cyanine dye, IR775, which is capable of concurrent real-time fluorescence imaging and cancer eradication with combinatorial phototherapy. To achieve water solubility and enhance tumor delivery, the hydrophobic IR775 dye was loaded into a biocompatible polymeric nanoparticle with a diameter of ~40nm and slightly negative surface charge (-2.34mV). The nanoparticle-encapsulated hydrophobic IR775 dye (IR775-NP) is characterized by an enhanced fluorescence quantum yield (16%) when compared to the water soluble analogs such as ICG (2...
November 21, 2016: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/27879140/-fluorescence-angiography-in-the-detection-of-anastomotic-perfusion-during-rectal-and-sigmoid-resection-preliminary-report
#19
M Škrovina, V Benčurik, E Holášková, J Bartoš, K Klos, M Macháčková, P Anděl
INTRODUCTION: The aim of the study was to evaluate the results of fluorescence angiography for assessing anastomotic perfusion after resection of the sigmoid colon and rectum since its introduction into clinical practice at the authors´ workplace and to evaluate the incidence of necessary resection line repositioning based on the quality of perfusion, and also to record any complications in anastomotic healing. METHOD: Retrospective unicentric analysis of prospectively collected data from patients with resection of the sigmoid colon and rectum with primary anastomosis...
2016: Rozhledy V Chirurgii: Měsíčník Československé Chirurgické Společnosti
https://www.readbyqxmd.com/read/27877241/photo-decomposable-organic-nanoparticles-for-combined-tumor-optical-imaging-and-multiple-phototherapies
#20
Wenjun Miao, Hyungjun Kim, Vipul Gujrati, Jin Yong Kim, Hyeongsu Jon, Yonghyun Lee, Minsuk Choi, Jinjoo Kim, Soyoung Lee, Dong Yun Lee, Sukmo Kang, Sangyong Jon
Combination of photodynamic therapy (PDT) with photothermal therapy (PTT) has achieved significantly improved therapeutic efficacy compared to a single phototherapy modality. However, most nanomaterials used for combined PDT/PTT are made of non-biodegradable materials (e.g., gold nanorods, carbon nanotubes, and graphenes) and may remain intact in the body for long time, raising concerns over their potential long-term toxicity. Here we report a new combined PDT/PTT nanomedicine, designated SP(3)NPs, that exhibit photo-decomposable, photodynamic and photothermal properties...
2016: Theranostics
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