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https://www.readbyqxmd.com/read/29334573/-a-fresh-cadaver-study-on-indocyanine-green-fluorescence-lymphography-a-new-whole-body-imaging-technique-for-investigating-the-superficial-lymphatics
#1
Akira Shinaoka, Seijiro Koshimune, Kiyoshi Yamada, Kanae Kumagishi, Hiroo Suami, Yoshihiro Kimata, Aiji Ohtsuka
BACKGROUND: Identification of the lymphatic system in cadavers is painstaking because lymphatic vessels have very thin walls and are transparent. Selection of appropriate contrast agents is a key factor for successfully visualizing the lymphatics. In this study, we introduce a new imaging technique of lymphatic mapping in whole body of fresh cadavers. METHODS: Ten fresh human cadavers were used for this study. We injected 0.1 mL of indocyanine green fluorescence (ICG) solution subcutaneously at multiple spots along the watershed lines between lymphatic territories and hand and foot regions...
January 10, 2018: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29334504/bradykinin-receptors-gene-expression-in-white-adipose-tissue-in-nondiabetic-patients-with-coronary-artery-disease
#2
Maria E Marketou, George Kochiadakis, Joanna Kontaraki, Evangelos Zacharis, Emmanouel Kanoupakis, Emmanouel Kallergis, Hercules Mavrakis, Panagiotis Tsiverdis, Dimitris Lempidakis, John Konstantinou, Konstantinos Fragkiadakis, Gregory Chlouverakis, Panos Vardas, Fragiskos Parthenakis
OBJECTIVES: Adipose tissue plays a key role in cardiovascular physiology. Kinin receptors are important determinant of the effect of adiposity on endothelial function and cardiovascular function. We examined the gene expression levels of kinin receptors in the subcutaneous white adipose tissue (sWAT) of nondiabetic patients with and without coronary artery disease (CAD). PATIENTS AND METHODS: We evaluated 21 patients with CAD (13 men, age: 68±8 years) and 23 patients without CAD (15 men, age: 66±5 years) who underwent catheterization through the femoral route...
January 12, 2018: Coronary Artery Disease
https://www.readbyqxmd.com/read/29334327/migration-of-a-kirschner-wire-into-the-spinal-cord-a-case-report-and-literature-review
#3
Ryogo Furuhata, Mitsuhiro Nishida, Midori Morishita, Shigeru Yanagimoto, Masaki Tezuka, Eijiro Okada
CONTEXT: A Kirschner wire (K-wire) is a stainless steel pin with at least one sharpened tip that is mainly used for the internal fixation of bone fractures. While some cases of K-wire dislocation and migration have been reported as complications after fracture surgery, the intraspinal migration of a K-wire is rare. Herein, we report a case in which a K-wire used for sternal fixation 7 years earlier migrated into the spinal canal. FINDINGS: A 68-year-old male suddenly sustained severe radiating pain and numbness in his left upper extremity, and walked to our hospital...
January 15, 2018: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/29334311/the-surface-chemistry-determines-the-spatio-temporal-interaction-dynamics-of-quantum-dots-in-atherosclerotic-lesions
#4
Bernd Uhl, Stephanie Hirn, Karina Mildner, Raffaele Coletti, Steffen Massberg, Christoph A Reichel, Markus Rehberg, Dagmar Zeuschner, Fritz Krombach
AIM: To optimize the design of nanoparticles for diagnosis or therapy of vascular diseases, it is mandatory to characterize the determinants of nano-bio interactions in vascular lesions. MATERIALS & METHODS: Using ex vivo and in vivo microscopy, we analyzed the interactive behavior of quantum dots with different surface functionalizations in atherosclerotic lesions of ApoE-deficient mice. RESULTS: We demonstrate that quantum dots with different surface functionalizations exhibit specific interactive behaviors with distinct molecular and cellular components of the injured vessel wall...
January 15, 2018: Nanomedicine
https://www.readbyqxmd.com/read/29334216/lysosome-independent-intracellular-drug-gene-co-delivery-by-lipoprotein-derived-nanovector-for-synergistic-apoptosis-inducing-cancer-targeted-therapy
#5
Wei Wang, Kerong Chen, Yujie Su, Jielei Zhang, Min Li, Jianping Zhou
In this paper, reconstituted high-density lipoprotein (rHDL), a lipoprotein-derived nanovector, were constructed for co-delivery of paclitaxel (PTX) and wild type p53 gene (p53). The particle size and the zeta potential of PTX-DODAB/p53-rHDL nanoparticles were 177.2 nm and -20.06 mV, respectively. Meanwhile, they exhibited great serum stability and satisfactory sustained release characteristics in vitro. PTX-DODAB/pDNA-rHDL nanoparticles simultaneously improved the cellular uptake of PTX and pDNA via scavenger receptor B type I (SR-BI) mediated lysosome-independent internalization and promoted the transfection of pDNA in MCF-7 cells, which were revealed by flow cytometry and confocal laser scanning microscopy analyses...
January 15, 2018: Biomacromolecules
https://www.readbyqxmd.com/read/29334196/microfluidic-tumor-vascular-model-to-study-breast-cancer-cell-invasion-and-intravasation
#6
Supriya Nagaraju, Danh Truong, Ghassan Mouneimne, Mehdi Nikkhah
Cancer is a major leading cause of disease-related death in the world. The severe impact of cancer can be attributed to poor understanding of the mechanisms involved in earliest steps of the metastatic cascade, specifically invasion into the surrounding stroma and intravasation into the blood capillaries. However, conducting integrated biological studies of invasion and intravasation have been challenging, within in vivo models and traditional in vitro assay, due to difficulties in establishing a precise tumor microenvironment...
January 15, 2018: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/29334179/functionalized-nanoparticles-efficiently-enhancing-the-targeted-delivery-tumor-penetration-and-anticancer-activity-of-7-ethyl-10-hydroxycamptothecin
#7
Xun Liu, Jingxing Si, Qianzhi Zhang, Qian Huang, Danxia Gu, Hao Yang, Xu Chen, Youqing Shen, Meihua Sui
The enhanced permeability and retention (EPR) effect of tumors is much more complex than initially defined, and it alone is not sufficient for targeted delivery of nanosized agents. Meanwhile, poor tumor penetration is another major challenge for the treatment of solid tumors using nanoparticles. Development of delivery systems for SN38, the active metabolite of CPT-11 in human and a very potent anticancer molecule, has become an attractive research area. PEGx -p(HEMASN38)y (x and y are viable), a prodrug synthesized by using polyethylene glycol (PEG) as initiator and SN38 as monomer through atom transfer radical polymeration (ATRP) method, is previously reported...
January 15, 2018: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/29334078/high-prf-ultrafast-sliding-compound-doppler-imaging-fully-qualitative-and-quantitative-analysis-of-blood-flow
#8
Jinbum Kang, Won Seuk Jang, Yangmo Yoo
Ultrafast compound Doppler imaging based on plane-wave excitation (UCDI) can be used to evaluate cardiovascular diseases using high frame rates. In particular, it provides a fully quantifiable flow analysis over a large region of interest with high spatio-temporal resolution. However, the pulse-repetition frequency (PRF) in the UCDI method is limited for high-velocity flow imaging since it leverages between the number of plane-wave angles (<i>N</i>) and acquisition time. In this paper, we present high PRF ultrafast sliding compound Doppler imaging method (HUSDI) to improve quantitative flow analysis...
January 15, 2018: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29333922/effect-of-resveratrol-treatment-on-graft-revascularization-after-islet-transplantation-in-streptozotocin-induced-diabetic-mice
#9
Eun-Mi Lee, Inwon Park, Ye-Jee Lee, Young-Hye You, Ji-Won Kim, Myung-Jun Kim, Yu-Bae Ahn, Pilhan Kim, Seung-Hyun Ko
We evaluated the effect of resveratrol (RSV) on graft survival after islet transplantation (ITx) in diabetic mice. Isolated islets from Balb/c mice (200 IEQ) were transplanted under the kidney capsule of diabetic Balb/c mice. Vehicle or RSV (200 mg/kg/day, orally) was given for 14 days after ITx. Two more control groups [STZ-treated (No-ITx-Control) and STZ+RSV-treated (No-ITx-RSV) mice without ITx] were added. Glucose tolerance tests (GTT) was performed at 14 days after ITx. In vitro, isolated islets pretreated with vehicle or RSV (1 μM) were incubated in a hypoxic chamber (O2 1%, 1hr)...
January 15, 2018: Islets
https://www.readbyqxmd.com/read/29333419/evaluation-of-a-polyurethane-foam-dressing-impregnated-with-3-povidone-iodine-betafoam-in-a-rat-wound-model
#10
Jin Won Lee, Kyo Young Song
Purpose: The purpose of this study was to evaluate the efficacy of Betafoam in terms of wound healing and safety. Methods: Fifty-four male adult Sprague-Dawley rats (weight, 200-250 g) were used in the study. Full-thickness skin defects were created on the back of each rats. The rats were assigned to 6 groups according to the type of wound dressing used (n = 9 for each group): Betafoam, Allevyn-Ag, Mepilex-Ag, Medifoam silver, Polymem-Ag, and gauze. The wound size, histological findings, and amount of DNA on the changed dressings for each group were analyzed and compared...
January 2018: Annals of Surgical Treatment and Research
https://www.readbyqxmd.com/read/29333203/biomimetic-microfluidic-platform-for-the-quantification-of-transient-endothelial-monolayer-permeability-and-therapeutic-transport-under-mimicked-cancerous-conditions
#11
Christopher George Uhl, Vladimir R Muzykantov, Yaling Liu
Therapeutic delivery from microvasculature to cancerous sites is influenced by many factors including endothelial permeability, vascular flow rates/pressures, cancer secretion of cytokines and permeabilizing agents, and characteristics of the chosen therapeutics. This work uses bi-layer microfluidics capable of studying dye and therapeutic transport from a simulated vessel to a cancerous region while allowing for direct visualization and quantification of endothelial permeability. 2.5 to 13 times greater dye transport was observed when utilizing small dye sizes (FITC) when compared to larger molecules (FITC-Dextran 4 kDa and FITC-Dextran 70 kDa), respectively...
January 2018: Biomicrofluidics
https://www.readbyqxmd.com/read/29332977/the-role-of-wnt-signalling-in-angiogenesis
#12
REVIEW
Jun Jun Olsen, Sebastian Öther-Gee Pohl, Abhijeet Deshmukh, Malini Visweswaran, Natalie C Ward, Frank Arfuso, Mark Agostino, Arun Dharmarajan
Angiogenesis is a normal biological process wherein new blood vessels form from the growth of pre-existing blood vessels. Preventing angiogenesis in solid tumours by targeting pro-angiogenic factors including vascular endothelial growth factor (VEGF), angiopoietin-1 (Ang-1), basic fibroblast growth factor (bFGF), hepatocyte growth factor, and platelet-derived growth factor (PDGF) is currently under investigation for cancer treatment. Concurrently targeting the cell signalling pathways involved in the transcriptional and post-translational regulation of these factors may provide positive therapeutic results...
November 2017: Clinical Biochemist. Reviews
https://www.readbyqxmd.com/read/29332937/improving-immune-vascular-crosstalk-for-cancer-immunotherapy
#13
REVIEW
Yuhui Huang, Betty Y S Kim, Charles K Chan, Stephen M Hahn, Irving L Weissman, Wen Jiang
The vasculature of tumours is highly abnormal and dysfunctional. Consequently, immune effector cells have an impaired ability to penetrate solid tumours and often exhibit compromised functions. Normalization of the tumour vasculature can enhance tissue perfusion and improve immune effector cell infiltration, leading to immunotherapy potentiation. However, recent studies have demonstrated that the stimulation of immune cell functions can also help to normalize tumour vessels. In this Opinion article, we propose that the reciprocal regulation between tumour vascular normalization and immune reprogramming forms a reinforcing loop that reconditions the tumour immune microenvironment to induce durable antitumour immunity...
January 15, 2018: Nature Reviews. Immunology
https://www.readbyqxmd.com/read/29332588/treatment-strategies-for-hypercholesterolemia
#14
Sarah Clauss, Jacob Hartz
Atherosclerotic disease is a leading cause of morbidity and mortality in adults and is generally thought of as only affecting adults. However, the pathologic changes in vessels leading to atherosclerosis, and an increased risk of cardiovascular disease, have been shown to begin in early adolescence. There is a growing body of literature suggesting that earlier treatment, through lifestyle changes and pharmacotherapy, can help reduce this risk.
January 11, 2018: Current Pediatric Reviews
https://www.readbyqxmd.com/read/29332573/torsades-de-pointes-in-patients-with-polymyalgia-rheumatica
#15
Pietro Enea Lazzerini, Iacopo Bertolozzi, Maurizio Acampa, Rosella Fulceri, Franco Laghi-Pasini, Pier Leopoldo Capecchi
Polymyalgia rheumatica (PMR) represents the most common inflammatory rheumatic disease of the elderly. It is characterized by synovitis of proximal joints and extra-articular synovial structures, along with chronic high-grade systemic inflammation. PMR is closely related to giant cell arteritis (GCA), a large-vessel vasculitis that involves the major branches of the aorta, particularly the extracranial branches of carotid artery including temporal arteries. It is currently believed that PMR and GCA may represent different manifestations of the same disease process...
January 10, 2018: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/29332510/localized-autoimmune-pancreatitis-mimicking-pancreatic-cancer-case-report-and-literature-review
#16
Wen-Ling Hsu, Shu-Min Chang, Pei-Yin Wu, Chin-Chuan Chang
Autoimmune pancreatitis (AP) is a rare autoimmune pancreatic manifestation of systemic immunoglobulin G4 (IgG4)-related sclerosing disease. Distinguishing between AP and pancreatic cancer is crucial because the clinical courses, treatments, and prognoses of these two disease entities are quite different. We herein report a case involving a 52-year-old man with subacute epigastralgia who visited our hospital for evaluation of a suspicious pancreatic mass found during esophagogastroduodenoscopy. Enhanced computed tomography (CT) revealed an enlarged lesion in the pancreatic head with encasement of hepatic vessels...
January 1, 2018: Journal of International Medical Research
https://www.readbyqxmd.com/read/29332242/selective-ikk2-inhibitor-imd0354-disrupts-nf-%C3%AE%C2%BAb-signaling-to-suppress-corneal-inflammation-and-angiogenesis
#17
Anton Lennikov, Pierfrancesco Mirabelli, Anthony Mukwaya, Mira Schaupper, Muthukumar Thangavelu, Mieszko Lachota, Zaheer Ali, Lasse Jensen, Neil Lagali
Corneal neovascularization is a sight-threatening condition caused by angiogenesis in the normally avascular cornea. Neovascularization of the cornea is often associated with an inflammatory response, thus targeting VEGF-A alone yields only a limited efficacy. The NF-κB signaling pathway plays important roles in inflammation and angiogenesis. Here, we study consequences of the inhibition of NF-κB activation through selective blockade of the IKK complex IκB kinase β (IKK2) using the compound IMD0354, focusing on the effects of inflammation and pathological angiogenesis in the cornea...
January 13, 2018: Angiogenesis
https://www.readbyqxmd.com/read/29332122/quantitative-study-of-the-macular-microvasculature-in-human-donor-eyes
#18
Paula K Yu, Zaid Mammo, Chandrakumar Balaratnasingam, Dao-Yi Yu
Purpose: To precisely quantify the macular microvasculature density using microperfusion and labeling techniques in human donor eyes. Such information may be useful in understanding the role of the macular microvasculature in coping with the metabolic requirements of the neurons in this densely packed region, and provide a reference point for clinical studies using recently developed optical imaging techniques. Methods: The macular microvasculature was perfusion-labeled in 18 human donor eyes and optical stacks collected from regions superior, temporal, inferior, and nasal to the foveola using confocal microscopy...
January 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29332028/possible-erythrocyte-contributions-to-and-exacerbation-of-the-post-thrombolytic-no-reflow-phenomenon
#19
Shang-Jen Yu, James P Buerck, Edgar A O'Rear, Thomas L Whitsett
BACKGROUND: Reperfusion injury often occurs with therapeutic intervention addressing the arterial occlusions causing acute myocardial infarction and stroke. The no-reflow phenomenon has been ascribed to leukocyte plugging and blood vessel constriction in the microcirculation. OBJECTIVE: To assess possible red cell contributions to post thrombolytic no-reflow phenomenon. METHODS: Blood clots were formed by recalcifying 1 ml of citrated fresh human venous blood and then lysed by adding 1,000 units of streptokinase (SK) at several intervals within 1 hour...
January 11, 2018: Biorheology
https://www.readbyqxmd.com/read/29331939/volumetric-muscle-loss-injury-repair-using-in-situ-fibrin-gel-cast-seeded-with-muscle-derived-stem-cells-mdscs
#20
Nadine Matthias, Samuel D Hunt, Jianbo Wu, Jonathan Lo, Laura A Smith Callahan, Yong Li, Johnny Huard, Radbod Darabi
Volumetric muscle defect, caused by trauma or combat injuries, is a major health concern leading to severe morbidity. It is characterized by partial or full thickness loss of muscle and its bio-scaffold, resulting in extensive fibrosis and scar formation. Therefore, the ideal therapeutic option is to use stem cells combined with bio-scaffolds to restore muscle. For this purpose, muscle-derived stem cells (MDSCs) are a great candidate due to their unique multi-lineage differentiation potential. In this study, we evaluated the regeneration potential of MDSCs for muscle loss repair using a novel in situ fibrin gel casting...
January 9, 2018: Stem Cell Research
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