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morphology AND histology AND vessels

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https://www.readbyqxmd.com/read/28218397/segmentation-of-digitized-histological-sections-for-quantification-of-the-muscularized-vasculature-in-the-mouse-hind-limb
#1
Yiwen Xu, J Geoffrey Pickering, Zengxuan Nong, Aaron D Ward
Immunohistochemical tissue staining enhances microvasculature characteristics, including the smooth muscle in the medial layer of the vessel walls that is responsible for regulation of blood flow. The vasculature can be imaged in a comprehensive fashion using whole-slide scanning. However, since each such image potentially contains hundreds of small vessels, manual vessel delineation and quantification is not practically feasible. In this work, we present a fully automatic segmentation and vasculature quantification algorithm for whole-slide images...
February 20, 2017: Journal of Microscopy
https://www.readbyqxmd.com/read/28203394/structural-features-of-bone-marrow
#2
REVIEW
Anatolii Romaniuk, Yuliia Lyndina, Vladyslav Sikora, Mykola Lyndin, Ludmyla Karpenko, Oksana Gladchenko, Igor Masalitin
PURPOSE: This article is devoted to the investigation of the structural features of the bone marrow of mature rats. MATERIALS AND METHODS: The investigation of the structural features of the bone marrow was performed on the femurs of the mature male rats. General structure of the organ was studied with hematoxylin-eosin and Van Gieson staining of samples. Certain features of the bone marrow structure were studied using immunohistochemical method (CD3, CD79α, S100, myeloperoxidase, and cyclin D1)...
September 2016: Interventional Medicine & Applied Science
https://www.readbyqxmd.com/read/28197783/freezing-nitrogen-ethanol-composite-may-be-a-viable-approach-for-cryotherapy-of-human-giant-cell-tumor-of-bone
#3
Po-Kuei Wu, Cheng-Fong Chen, Jir-You Wang, Paul Chih-Hsueh Chen, Ming-Chau Chang, Shih-Chieh Hung, Wei-Ming Chen
BACKGROUND: Liquid nitrogen has been used as adjuvant cryotherapy for treating giant cell tumor (GCT) of bone. However, the liquid phase and ultrafreezing (-196° C) properties increase the risk of damage to the adjacent tissues and may lead to perioperative complications. A novel semisolid cryogen, freezing nitrogen ethanol composite, might mitigate these shortcomings because of less-extreme freezing. We therefore wished to evaluate freezing nitrogen ethanol composite as a coolant to determine its properties in tumor cryoablation...
February 14, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28186882/multi-modality-imaging-enables-detailed-hemodynamic-simulations-in-dissecting-aneurysms-in-mice
#4
Evan Phillips, Paolo Di Achille, Matthew Bersi, Jay Humphrey, Craig Goergen
A multi-modality imaging based modeling approach was used to study complex unsteady hemodynamics and lesion growth in a dissecting abdominal aortic aneurysm model. We combined in vivo ultrasound (geometry and flow) and in vitro optical coherence tomography (geometry) to obtain the high resolution needed to construct detailed hemodynamic simulations over large portions of the murine vasculature, which include fine geometric complexities. We illustrate this approach for a spectrum of dissecting abdominal aortic aneurysms induced in male apolipoprotein E-null mice by high-dose angiotensin II infusion...
February 6, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28178293/%C3%AE-ct-of-ex-vivo-stained-mouse-hearts-and-embryos-enables-a-precise-match-between-3d-virtual-histology-classical-histology-and-immunochemistry
#5
Christian Dullin, Roser Ufartes, Emanuel Larsson, Sabine Martin, Marcio Lazzarini, Giuliana Tromba, Jeannine Missbach-Guentner, Diana Pinkert-Leetsch, Dörthe M Katschinski, Frauke Alves
The small size of the adult and developing mouse heart poses a great challenge for imaging in preclinical research. The aim of the study was to establish a phosphotungstic acid (PTA) ex-vivo staining approach that efficiently enhances the x-ray attenuation of soft-tissue to allow high resolution 3D visualization of mouse hearts by synchrotron radiation based μCT (SRμCT) and classical μCT. We demonstrate that SRμCT of PTA stained mouse hearts ex-vivo allows imaging of the cardiac atrium, ventricles, myocardium especially its fibre structure and vessel walls in great detail and furthermore enables the depiction of growth and anatomical changes during distinct developmental stages of hearts in mouse embryos...
2017: PloS One
https://www.readbyqxmd.com/read/28169309/correlative-imaging-of-the-murine-hind-limb-vasculature-and-muscle-tissue-by-microct-and-light-microscopy
#6
Laura Schaad, Ruslan Hlushchuk, Sébastien Barré, Roberto Gianni-Barrera, David Haberthür, Andrea Banfi, Valentin Djonov
A detailed vascular visualization and adequate quantification is essential for the proper assessment of novel angiomodulating strategies. Here, we introduce an ex vivo micro-computed tomography (microCT)-based imaging approach for the 3D visualization of the entire vasculature down to the capillary level and rapid estimation of the vascular volume and vessel size distribution. After perfusion with μAngiofil®, a novel polymerizing contrast agent, low- and high-resolution scans (voxel side length: 2.58-0.66 μm) of the entire vasculature were acquired...
February 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28164558/increased-number-of-mast-cells-in-atherosclerotic-lesions-correlates-with-the-presence-of-myeloid-but-not-plasmacytoid-dendritic-cells-as-well-as-pro-inflammatory-t-cells
#7
Ilonka Rohm, Sandra Sattler, Yevgeniya Atiskova, Daniel Kretzschmar, Rudin Pistulli, Marcus Franz, Christian Jung, Gita Mall, Thomas Kronert, Paul C Schulze, Atilla Yilmaz
BACKGROUND: Atherosclerosis is an inflammatory disease of the vessel wall promoted by different immune cells and inflammatory mediators. METHODS: In this study, 26 human plaques and 12 control vessels without atherosclerosis were immunohistochemically stained to analyze the emergence of mast cells dependent on plaque morphology and to correlate mast cell occurrence with the emergence of myeloid as well as plasmacytoid dendritic cells. Also, mast cell emergence was correlated with the number of pro-inflammatory T cells...
December 1, 2016: Clinical Laboratory
https://www.readbyqxmd.com/read/28150849/from-thrombosis-to-fibrosis-in-chronic-thromboembolic-pulmonary-hypertension
#8
Magdalena L Bochenek, Nico S Rosinus, Mareike Lankeit, Lukas Hobohm, Felix Bremmer, Eva Schütz, Frederikus A Klok, Sven Horke, Christoph B Wiedenroth, Thomas Münzel, Irene M Lang, Eckhard Mayer, Stavros Konstantinides, Katrin Schäfer
The pathomechanisms underlying the development of thrombofibrotic pulmonary artery occlusions in Chronic Thromboembolic Pulmonary Hypertension (CTEPH) are largely unknown. The aim of this study was to allocate distinct cellular processes playing a role in thrombus resolution, such as inflammation, hypoxia, proliferation, apoptosis and angiogenesis, to different stages of thrombofibrotic remodelling. A total of 182 pulmonary endarterectomy (PEA) specimens were collected from 31 CTEPH patients. To facilitate co-localisation, Tissue MicroArrays were prepared and processed for (immuno)-histochemistry and confocal fluorescence microscopy...
February 2, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28150291/presence-of-multiple-coronary-angiographic-characteristics-for-the-diagnosis-of-acute-coronary-thrombus
#9
Alok R Amraotkar, Shahab Ghafghazi, Patrick J Trainor, Charles W Hargis, Affan B Irfan, Shesh N Rai, Aruni Bhatnagar, Andrew P DeFilippis
BACKGROUND: Coronary angiography is frequently employed to aid in the diagnosis of acute coronary thrombosis, but there is limited data to support its efficacy. The aim of the study was to evaluate sensitivity and specificity of five commonly used angiographic characteristics for diagnosis of acute coronary thrombosis: Ambrose complex lesion morphology; spherical, ovoid, or irregular filling defect; abrupt vessel cutoff; intraluminal staining; and any coronary filling defect. METHODS: Coronary angiography of 80 acute myocardial infarction or stable coronary artery disease subjects were assessed in blinded fashion, for the presence or absence of five angiographic characteristics...
February 2, 2017: Cardiology Journal
https://www.readbyqxmd.com/read/28130393/irradiation-affects-germ-and-somatic-cells-in-prepubertal-monkey-testis-xenografts
#10
I Tröndle, B Westernströer, J Wistuba, N Terwort, S Schlatt, N Neuhaus
STUDY QUESTION: Does irradiation evoke adverse effects in germ and somatic cells in testis xenografts from prepubertal monkeys? SUMMARY ANSWER: In addition to the expected depletion of germ cells, a dose-dependent effect of irradiation was observed at the mRNA and protein level in Sertoli and peritubular myoid cells. WHAT IS KNOWN ALREADY: Testicular irradiation studies in monkeys have focused on the dose-dependent effects on germ cells. Previous studies using intact animals or xenografts reported that germ cells are highly sensitive to irradiation...
January 27, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28127617/an-anatomical-and-histological-study-of-the-equine-proximal-manica-flexoria
#11
Judith A Findley, Emanuele E Ricci, Ellen E Singer
OBJECTIVES: The main aim was to describe the gross and histological appearance of the equine manica flexoria and to identify any differences between the forelimbs and hindlimbs. An additional aim was to relate the findings to diagnostic and surgical anatomy of the manica flexoria. METHODS: Measurements of the manica flexoria were made on cadaveric limbs from horses free from pathology within the digital flexor tendon sheath. Histological sections, stained with haematoxylin and eosin and alcian- periodic acid schiff, were evaluated based on three micro-anatomical zones from dorsal to palmar or plantar...
January 27, 2017: Veterinary and Comparative Orthopaedics and Traumatology: V.C.O.T
https://www.readbyqxmd.com/read/28124738/morphological-and-histochemical-changes-associated-with-massive-infection-by-neoechinorhynchus-buttnerae-acanthocephala-neoechinorhynchidae-in-the-farmed-freshwater-fish-colossoma-macropomum-cuvier-1818-from-the-amazon-state-brazil
#12
Lorena V de Matos, Maria Inês B de Oliveira, Ana Lúcia S Gomes, Grazyelle S da Silva
The study describes the morphological changes associated with parasitism by the intestinal acanthocephalan Neoechinorhynchus buttnerae in tambaqui juveniles Colossoma macropomum farmed in an excavated nursery, in Manaus (Amazon) in September 2013. After fish biometrics, analysis of macroscopic changes in morphology and counting of parasites, bowel fragments were fixed and submitted to histological and histochemical processing. All fish analyzed had acanthocephalans in the intestine; intestinal loops were milky white in color, with the presence of nodules with heavy parasitism...
January 26, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28109054/intracoronary-optical-coherence-tomography-clinical-and-research-applications-and-intravascular-imaging-software-overview
#13
Erhan Tenekecioglu, Felipe N Albuquerque, Yohei Sotomi, Yaping Zeng, Pannipa Suwannasom, Hiroki Tateishi, Rafael Cavalcante, Yuki Ishibashi, Shimpei Nakatani, Mohammad Abdelghani, Jouke Dijkstra, Christos Bourantas, Carlos Collet, Antonios Karanasos, Maria Radu, Ancong Wang, Takashi Muramatsu, Ulf Landmesser, Takayuki Okamura, Evelyn Regar, Lorenz Räber, Giulio Guagliumi, Robert T Pyo, Yoshinobu Onuma, Patrick W Serruys
By providing valuable information about the coronary artery wall and lumen, intravascular imaging may aid in optimizing interventional procedure results and thereby could improve clinical outcomes following percutaneous coronary intervention (PCI). Intravascular optical coherence tomography (OCT) is a light-based technology with a tissue penetration of approximately 1 to 3 mm and provides near histological resolution. It has emerged as a technological breakthrough in intravascular imaging with multiple clinical and research applications...
January 21, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28107543/quantification-of-pulmonary-fibrosis-in-a-bleomycin-mouse-model-using-automated-histological-image-analysis
#14
Jean-Claude Gilhodes, Yvon Julé, Sebastian Kreuz, Birgit Stierstorfer, Detlef Stiller, Lutz Wollin
Current literature on pulmonary fibrosis induced in animal models highlights the need of an accurate, reliable and reproducible histological quantitative analysis. One of the major limits of histological scoring concerns the fact that it is observer-dependent and consequently subject to variability, which may preclude comparative studies between different laboratories. To achieve a reliable and observer-independent quantification of lung fibrosis we developed an automated software histological image analysis performed from digital image of entire lung sections...
2017: PloS One
https://www.readbyqxmd.com/read/28099955/dermoscopy-of-granuloma-annulare-a-clinical-and-histological-correlation-study
#15
Enzo Errichetti, Aimilios Lallas, Zoe Apalla, Alessandro Di Stefani, Giuseppe Stinco
BACKGROUND: Dermoscopy of granuloma annulare has been investigated by several studies, but none of them took into account the variability of dermoscopic findings according to clinical characteristics and/or histological subtype. OBJECTIVE: To describe the dermoscopic features of classic granuloma annulare and seek possible dermoscopic clues related to specific clinical findings/histological subpatterns. METHODS: A representative dermoscopic image of a target lesion (the most active lesion underwent histological examination) was retrospectively assessed for the presence of specific morphological findings, correlating them with clinical variables, i...
January 19, 2017: Dermatology: International Journal for Clinical and Investigative Dermatology
https://www.readbyqxmd.com/read/28094892/histological-features-of-the-vomeronasal-organ-in-the-giraffe-giraffa-camelopardalis
#16
Daisuke Kondoh, Kentaro G Nakamura, Yurie S Ono, Kazutoshi Yuhara, Gen Bando, Kenichi Watanabe, Noriyuki Horiuchi, Yoshiyasu Kobayashi, Motoki Sasaki, Nobuo Kitamura
The vomeronasal organ (VNO) that preferentially detects species-specific substances is diverse among animal species, and its morphological properties seem to reflect the ecological features of animals. This histological study of two female reticulated giraffes (Giraffa camelopardalis reticulata) found that the VNO is developed in giraffes. The lateral and medial regions of the vomeronasal lumen were covered with sensory and nonsensory epithelia, respectively. The vomeronasal glands were positive for periodic acid-Schiff and alcian blue (pH 2...
January 17, 2017: Microscopy Research and Technique
https://www.readbyqxmd.com/read/28007877/mechanical-reperfusion-with-leucocyte-filtered-blood-does-not-prevent-injury-following-global-cerebral-ischaemia
#17
Rickard P F Lindblom, Thomas Tovedal, Bo Norlin, Lars Hillered, Svetlana N Popova, Irina Alafuzoff, Stefan Thelin
OBJECTIVES: Prolonged global cerebral ischaemia leads to irreversible injury, often with lethal outcome. Brain injuries are partly caused by the uncontrolled reperfusion that occurs once the circulation is re-established. Recent animal experiments suggest that controlled reperfusion following lengthy ischaemia might prevent severe brain injury. This study aimed at further exploring cerebral alterations and outcome following prolonged global cerebral ischaemia and mechanically manipulated reperfusion...
December 22, 2016: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/27957815/evolution-of-graft-morphology-and-function-after-recellularization-of-decellularized-rat-livers
#18
Antje Butter, Khalid Aliyev, Karl-Herbert Hillebrandt, Nathanael Raschzok, Martin Kluge, Nicolai Seiffert, Peter Tang, Hendrik Napierala, Muhammad Imtiaz Ashraf, Anja Reutzel-Selke, Andreas Andreou, Johann Pratschke, Igor Maximilian Sauer, Benjamin Struecker
Decellularization of livers is a well-established procedure. Data on different reseeding techniques or the functional evolution and re-organization processes of repopulated grafts remains limited. We established a proprietary, customized bioreactor to repopulate decellularized rat livers (n = 21) with primary rat hepatocytes (150 x 10(6) cells) via the hepatic artery and to subsequently evaluate graft morphology and function during seven days of ex vivo perfusion. Grafts were analyzed at 1 h, 6 h, 12 h, 24 h, 3d, 5d and 7d after recellularization (all n = 3) by immuno-histologic evaluation, hepatocyte-related enzyme (AST, ALT, LDH) and albumin measurement in the perfusate...
December 13, 2016: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/27956273/high-endothelial-venule-like-vessels-and-lymphocyte-recruitment-in-diffuse-sclerosing-variant-of-papillary-thyroid-carcinoma
#19
Shulin Low, Yasuhiro Sakai, Hitomi Hoshino, Mitsuyoshi Hirokawa, Hiroto Kawashima, Kayoko Higuchi, Yoshiaki Imamura, Motohiro Kobayashi
Diffuse sclerosing variant of papillary thyroid carcinoma (DSPTC) is a rare subtype of papillary thyroid carcinoma with a high incidence of lymph node metastasis. One of its characteristic histological features is the presence of dense lymphocyte infiltrates; however, how these lymphocytes are recruited in this pathological setting remains unclear. Here, we analysed 17 DSPTC cases immunohistologically for cell adhesion molecules expressed on endothelial cells. We found that venules morphologically similar to high endothelial venules (HEVs) in secondary lymphoid organs were induced in lymphoid aggregates in DSPTC, and such HEV-like vessels expressed 6-sulfo sialyl Lewis X (sLeX) glycans as well as intercellular adhesion molecule 1 (ICAM-1)...
December 2016: Pathology
https://www.readbyqxmd.com/read/27919850/detection-and-differentiation-of-early-hepatocellular-carcinoma-from-cirrhosis-using-ct-perfusion-in-a-rat-liver-model
#20
Jin-Ping Li, Guang-Long Feng, Da-Qing Li, Hai-Bo Wang, De-Li Zhao, Yong Wan, Hui-Jie Jiang
BACKGROUND: Functional imaging such as CT perfusion can detect morphological and hemodynamic changes in hepatocellular carcinoma (HCC). Pre-carcinoma and early HCC nodules are difficult to differentiate by observing only their hemodynamics changes. The present study aimed to investigate hemodynamic parameters and evaluate their differential diagnostic cut-off between pre-carcinoma and early HCC nodules using CT perfusion and receiver operating characteristic (ROC) curves. METHODS: Male Wistar rats were randomly divided into control (n=20) and experimental (n=70) groups...
December 2016: Hepatobiliary & Pancreatic Diseases International: HBPD INT
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