keyword
MENU ▼
Read by QxMD icon Read
search

Vascular Structure

keyword
https://www.readbyqxmd.com/read/29454159/an-aligned-porous-electrospun-fibrous-membrane-with-controlled-drug-delivery-an-efficient-strategy-to-accelerate-diabetic-wound-healing-with-improved-angiogenesis
#1
Xiaozhi Ren, Yiming Han, Jie Wang, Yuqi Jiang, Zhengfang Yi, He Xu, Qinfei Ke
A chronic wound in diabetic patients is usually characterized by poor angiogenesis and delayed wound closure. The exploration of efficient strategy to significantly improve angiogenesis in the diabetic wound bed and thereby accelerate wound healing is still a significant challenge. Herein, we reported a kind of aligned porous poly (L-lactic acid) (PLLA) electrospun fibrous membranes containing dimethyloxalylglycine (DMOG)-loaded mesoporous silica nanoparticles (DS) for diabetic wound healing. The PLLA electrospun fibers aligned in a single direction and there were ellipse-shaped nano-pores in situ generated onto the surface of fibers, while the DS were well distributed in the fibers and the DMOG as well as Si ion could be controlled released from the nanopores on the fibers...
February 14, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29454158/polyisocyanopeptide-hydrogels-a-novel-thermo-responsive-hydrogel-supporting-pre-vascularization-and-the-development-of-organotypic-structures
#2
Jakub Zimoch, Joan Simó Padial, Agnes S Klar, Queralt Vallmajo-Martin, Martin Meuli, Thomas Biedermann, Christopher J Wilson, Alan Rowan, Ernst Reichmann
Molecular and mechanical interactions with the 3D extracellular matrix are essential for cell functions such as survival, proliferation, migration, and differentiation. Thermo-responsive biomimetic polyisocyanopeptide (PIC) hydrogels are promising new candidates for 3D cell, tissue, and organ cultures. This is a synthetic, thermo-responsive and stress-stiffening material synthesized via polymerization of the corresponding monomers using a nickel perchlorate as a catalyst. It can be tailored to meet various demands of cells by modulating its stiffness and through the decoration of the polymer with short GRGDS peptides using copper free click chemistry...
February 14, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29452906/extracranial-arterial-wall-volume-is-increased-and-shows-relationships-with-vascular-mri-measures-in-idiopathic-parkinson-s-disease
#3
Stephen Ball, Sarah Al-Bachari, Laura M Parkes, Hedley C A Emsley, Charles N McCollum
OBJECTIVE: Idiopathic Parkinson's disease (IPD) is the second most common neurodegenerative disorder, often complicated by dementia. Cardiovascular risk factors and spontaneous cerebral emboli (SCE) are strongly associated with Alzheimer's (AD) and vascular dementia (VaD). We measured SCE in the middle cerebral artery and arterial wall volume in the extracranial arteries in patients with IPD and controls, and explored the relationships with structural and physiological MRI brain neurovascular measures...
February 10, 2018: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29452694/chitinase-3-like-1-chi3l1-promotes-vasculogenic-mimicry-formation-in-cervical-cancer
#4
Nipaporn Ngernyuang, Rong Shao, Komsun Suwannarurk, Temduang Limpaiboon
Vasculogenic mimicry (VM) is an alternative microvascular system which tumour cells orchestrate, independent of endothelial cell-mediated angiogenesis. VM develops tumour vascular networks that correlate with tumour growth, metastasis, and short survival time of patients with a number of cancers. However, little is known regarding VM in the vascularisation of cervical cancer. Chitinase 3 like 1 (CHI3L1) has been previously reported to display the ability to induce angiogenesis in cervical cancer. Here, we explored a pathological role of CHI3L1 in tumour cell-mediated vascularisation...
February 13, 2018: Pathology
https://www.readbyqxmd.com/read/29452577/polymerase-delta-interacting-protein-2-deficiency-protects-against-blood-brain-barrier-permeability-in-the-ischemic-brain
#5
Marina S Hernandes, Bernard Lassègue, Lula L Hilenski, Jonathan Adams, Ning Gao, Chia-Yi Kuan, Yu-Yo Sun, Lihong Cheng, Daniel S Kikuchi, Manuel Yepes, Kathy K Griendling
BACKGROUND: Polymerase δ-interacting protein 2 (Poldip2) is a multifunctional protein that regulates vascular extracellular matrix composition and matrix metalloproteinase (MMP) activity. The blood-brain barrier (BBB) is a dynamic system assembled by endothelial cells, basal lamina, and perivascular astrocytes, raising the possibility that Poldip2 may be involved in maintaining its structure. We investigated the role of Poldip2 in the late BBB permeability induced by cerebral ischemia...
February 17, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29451817/the-impact-of-pulse-pressure-on-cerebrovascular-events-leading-to-age-related-cognitive-decline
#6
Nathalie Thorin-Trescases, Olivia de Montgolfier, Anthony Pinçon, Adeline Raignault, Laurie Caland, Pauline Labbé, Eric Thorin
Aging is a modern concept: human life expectancy has more than doubled in less than 150 years in Western countries. Longer lifespan, however, reveals age-related diseases, including cerebrovascular diseases. The vascular system is a prime target of aging: the "wear and tear" of large elastic arteries exposed to a life-long pulsatile pressure causes arterial stiffening by fragmentation of elastin fibers and replacement by stiffer collagen. This arterial stiffening increases in return the amplitude of the pulse pressure (PP), its wave penetrating deeper into the microcirculation of low resistance, high flow organs such as the brain...
February 16, 2018: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29451373/regional-structural-and-functional-specialisations-in-the-urethra-of-the-female-rat-evidence-for-complex-physiological-control-systems
#7
Monica Eggermont, Stefan De Wachter, Jane Eastham, James Gillespie
The present study characterises the complex structural and functional elements of the female rat urethra that may be involved in controlling urethral closure and continence. Urethras were dissected from female Sprague-Dawley rats (n=12) euthanized by pentobarbital overdose. Tissues were fixed (4% paraformaldehyde), frozen and sectioned (8μm) for light microscopy and immunohistochemistry. Antibodies were used to detect immunoreactivity to calcitonin gene related peptide, nitric oxide synthase, vesicular acetylcholine transporter and tyrosine hydroxylase...
February 16, 2018: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29450949/pre3-and-wox11-transcription-factors-are-involved-in-the-formation-of-new-lateral-roots-from-secondary-growth-taproot-in-a-thaliana
#8
B Baesso, D Chiatante, M Terzaghi, D Zenga, K Nieminen, A P Mahonen, R Siligato, Y Heliariutta, G S Scippa, A Montagnoli
The spatial deployment of lateral roots determines the ability of a plant to interact with the surrounding environment for nutrition and anchorage. This paper shows that besides the pericycle, the vascular cambium, becoming active in Arabidopsis thaliana taproot at a later stage of development, is also able to form new lateral roots. Demonstration of this event required the implementation of a two-step approach in which the first leads to development of a secondary structure in A. thaliana taproot, and the second applies a mechanical stress on the vascular cambium to initiate the formation of a new lateral root primordium...
February 16, 2018: Plant Biology
https://www.readbyqxmd.com/read/29449772/differential-examination-diagnosis-and-management-for-tingling-in-toes-fellow-s-case-problem
#9
Cody J Mansfield, Jake Bleacher, Paul Tadak, Matthew S Briggs
Background: The diagnosis of chronic exertional compartment syndrome can be challenging as other pathologies involving bone, muscle, nerve and vascular structures can mimic the syndrome. The purpose of this Fellow's Case Problem is to describe the clinical decision-making and physical therapy differential diagnosis regarding a 25-year-old patient with un-resolved neurovascular complaints following chronic exertional compartment syndrome surgical release. Diagnosis: After surgery, the patient's previous complaint of numbness and tingling in the plantar surfaces of her first and second toes of right foot was still present...
December 2017: Journal of Manual & Manipulative Therapy
https://www.readbyqxmd.com/read/29449598/health-related-quality-of-life-in-adolescents-and-the-retinal-microvascular-structure
#10
Bamini Gopinath, Gerald Liew, George Burlutsky, Louise A Baur, Paul Mitchell
We aimed to investigate whether health-related quality of life (HRQoL) is associated with retinal vascular caliber, an indicator of subclinical cardiovascular disease risk. 1600 students aged between 11-19 years (821 girls and 779 boys) were examined during 2009-2011. Retinal vessel caliber was measured from digital retinal images. HRQoL was assessed by the Pediatric Quality of Life Inventory (PedsQL). In the overall cohort, each 1-unit increase in PedsQL total score and the psychosocial summary score was associated with ~0...
February 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29449343/extrahepatic-angiogenesis-hinders-recovery-of-portal-hypertension-and-collaterals-in-rats-with-cirrhosis-resolution
#11
Shao-Jung Hsu, Ming-Hung Tsai, Ching-Chih Chang, Yu-Hsin Hsieh, Hui-Chun Huang, Fa-Yauh Lee, Chiao-Lin Chuang, Ming-Chih Hou, Shou-Dong Lee
Liver cirrhosis is characterized by portal hypertension. However, the alteration of portal hypertension-related derangements during cirrhosis resolution is not well known. This study aimed to establish animal models with cirrhosis resolution and to investigate the relevant changes during this process.Male Spraque-Dawley rats were applied. In reverse thioacetamide (rTAA) model, rats were randomly allocated into four groups with control, TAA cirrhosis and rTAA groups that discontinued TAA for 4 or 8 weeks after cirrhosis induction...
February 15, 2018: Clinical Science (1979-)
https://www.readbyqxmd.com/read/29448042/quantitative-comparisons-between-optical-coherence-tomography-angiography-and-matched-histology-in-the-human-eye
#12
Dong An, Chandrakumar Balaratnasingam, Morgan Heisler, Ashley Francke, MyeongJin Ju, Ian L McAllister, Marinko Sarunic, Dao-Yi Yu
The aim was to quantitatively compare retinal vascular detail as seen on optical coherence tomography angiography (OCTA) and matched histology in the human eye. 13 normal human donor eyes were used. The central retinal artery was cannulated after which human packed red blood cells were perfused through the retinal vasculature. Retinal vessels were imaged using a custom-built OCTA device during red blood cell perfusion. The eye was subsequently perfused with endothelial cell antibodies and the flat-mounted retina studied histologically using a confocal scanning laser microscope...
February 12, 2018: Experimental Eye Research
https://www.readbyqxmd.com/read/29446982/development-of-an-omentum-cultured-oesophageal-scaffold-reinforced-by-a-3d-printed-ring-feasibility-of-an-in-vivo-bioreactor
#13
Eun-Jae Chung, Hyung Woo Ju, Yeung Kyu Yeon, Ji Seung Lee, Young Jin Lee, Ye Been Seo, Park Chan Hum
Current treatments of oesophageal diseases, such as carcinoma, congenital abnormality or trauma, require surgical intervention and oesophageal reconstruction with the stomach, jejunum or colon. However, serious side effects are possible with each treatment option. Despite tissue engineering promising to be an effective regenerative strategy, no functional solution currently exists for oesophageal reconstruction. Here, we developed an omentum-cultured oesophageal scaffold reinforced by a 3D-printed ring. The nano-structured scaffolds were wrapped into the omentum of rats and orthotopically transplanted for the repair of circumferential oesophageal defects two weeks later...
February 15, 2018: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29446125/feasibility-of-high-spatiotemporal-resolution-for-an-abbreviated-3d-radial-breast-mri-protocol
#14
Jorge E Jimenez, Roberta M Strigel, Kevin M Johnson, Leah C Henze Bancroft, Scott B Reeder, Walter F Block
PURPOSE: To develop a volumetric imaging technique with 0.8-mm isotropic resolution and 10-s/volume rate to detect and analyze breast lesions in a bilateral, dynamic, contrast-enhanced MRI exam. METHODS: A local low-rank temporal reconstruction approach that also uses parallel imaging and spatial compressed sensing was designed to create rapid volumetric frame rates during a contrast-enhanced breast exam (vastly undersampled isotropic projection [VIPR] spatial compressed sensing with temporal local low-rank [STELLR])...
February 14, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29446089/morphometric-and-histopathological-evaluation-of-the-effect-of-grape-seed-proanthocyanidin-on-alveolar-bone-loss-in-experimental-diabetes-and-periodontitis
#15
H Toker, H Balci Yuce, A Lektemur Alpan, F Gevrek, M Elmastas
OBJECTIVE: Grape seed proanthocyanidine extract (GSPE) is a strong antioxidant derived from the grape seeds (Vitis vinifera, Terral J.F.) and has a polyphenolic structure with a wide range of biological activity. The aim of the present study was to evaluate the effects of GSPE on alveolar bone loss and histopathological changes in rats with diabetes mellitus and ligature-induced periodontitis. MATERIAL AND METHODS: Forty rats were divided into 6 study groups. Control (C, 6 rats) group, periodontitis (P, 6 rats) group, diabetes (D, 6 rats) group, diabetes and periodontitis (D+P, 6 rats) group, diabetes, periodontitis and 100 mg/kg/day GSPE (GSPE-100, 8 rats), and diabetes, periodontitis and 200 mg/kg/day GSPE (GSPE-200, 8 rats) group...
February 15, 2018: Journal of Periodontal Research
https://www.readbyqxmd.com/read/29445946/paravertebral-tumours-of-the-cervicothoracic-junction-extending-into-the-mediastinum-surgical-strategies-in-a-no-man-s-land
#16
Georgios K Prezerakos, Parag Sayal, Antonios Kourliouros, Periclis Pericleous, George Ladas, Adrian Casey
PURPOSE: Cervicothoracic paravertebral neoplasms extending into the mediastinum pose a surgical challenge due the complex regional anatomy, their biological nature, rarity and surgeon's unfamiliarity with the region. We aim to define a surgical access framework addressing the aforementioned complexities whilst achieving oncological clearance. METHODS: We carried out a retrospective review of 28 consecutive patients operated in two tertiary referral centres between 1998 and 2015...
February 14, 2018: European Spine Journal
https://www.readbyqxmd.com/read/29445599/robotic-vascular-resections-during-whipple-procedure
#17
REVIEW
Bassan J Allan, Stephanie M Novak, Melissa E Hogg, Herbert J Zeh
Indications for resection of pancreatic cancers have evolved to include selected patients with involvement of peri-pancreatic vascular structures. Open Whipple procedures have been the standard approach for patients requiring reconstruction of the portal vein (PV) or superior mesenteric vein (SMV). Recently, high-volume centers are performing minimally invasive Whipple procedures with portovenous resections. Our institution has performed seventy robotic Whipple procedures with concomitant vascular resections...
2018: Journal of Visualized Surgery
https://www.readbyqxmd.com/read/29445574/linear-verrucous-hemangioma-a-rare-case-and-dermoscopic-clues-to-diagnosis
#18
Aditi Dhanta, Payal Chauhan, Dilip Meena, Neirita Hazarika
Verrucous hemangioma (VH) is a rare, congenital and localized vascular malformation, which usually presents as warty, bluish, vascular papules, plaques, or nodules, mainly on the lower extremities. Linear presentation of the disease is rare. A deep biopsy is necessary to confirm the clinical diagnosis by histopathological examination, with dermoscopy acting as a useful tool for evaluating the precise vascular structure. Here, we report on a 13-year-old female child with linear VH presenting over her foot since infancy and dermoscopic findings of VH along with the clinical-pathologic features...
January 2018: Dermatology Practical & Conceptual
https://www.readbyqxmd.com/read/29443798/clinical-features-imaging-and-natural-history-of-myelinated-retinal-nerve-fiber-layer
#19
Raksha Rao, Elif B Turkoglu, Emil A T Say, Carol L Shields
PURPOSE: To evaluate the natural history of myelinated retinal nerve fiber layer (MRNFL) through clinical features and enhanced depth imaging optical coherence tomography. METHODS: This is a retrospective, noncomparative, case series of patients who underwent thorough clinical examination to document associated ocular and systemic features. Enhanced depth imaging optical coherence tomography was performed when MRNFL was located posteriorly and accessible to imaging...
February 13, 2018: Retina
https://www.readbyqxmd.com/read/29443553/highly-conserved-motifs-within-the-large-sec7-arf-guanine-nucleotide-exchange-factor-gbf1-target-it-to-the-golgi-and-are-critical-for-gbf1-activity
#20
Cristian A Pocognoni, Ekaterina G Viktorova, John Wright, Justyna M Meissner, Garrett Sager, Eunjoo Lee, George A Belov, Elizabeth Sztul
Cellular life requires the activation of the ADP-ribosylation factors (ARFs) by GBF1, a guanine nucleotide exchange factor (GEF) with a highly conserved catalytic Sec7 domain (Sec7d). In addition to the Sec7d, GBF1 contains other conserved domains whose functions remain unclear. Here, we focus on HDS2 (homology downstream of the Sec7d 2) domain because the L1246R substitution within the HDS2 α-helix 5 of the zebrafish GBF1 ortholog causes vascular hemorrhaging and embryonic lethality (13). To dissect the structure/function relationships within HDS2, we generated six variants, in which the most conserved residues within α-helices 1, 2, 4 and 6 were mutated to alanines...
February 14, 2018: American Journal of Physiology. Cell Physiology
keyword
keyword
99014
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"