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morphology AND histology AND vessels

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https://www.readbyqxmd.com/read/29424175/-experimental-study-on-staphylococcal-enterotoxin-promoting-tendon-bone-healing-after-reconstruction-of-anterior-cruciate-ligament-in-rabbits
#1
Chun-Bao Li, Chao Xue, Wei Qi, Ning Wang, Jing Xue, Xiao-Yong Wu, Juan-Li Zhu, Yang Liu, Yu-Jie Liu
OBJECTIVE: To explore highly agglutinative staphylococcin (HAS) pomoting on tendon-bone healing after reconstruction of anterior cruciate ligament(ACL) in rabbits. METHODS: Animal model of ACL reconstruction in 24 mature New Zealand white rabbits(3 months, 2.56 kg on average, either gender) were established using autologous digital long extensor tendon and randomly classified into 2 groups(HAS and control group), 12 rabbits for each group. HAS group was separately injected 0...
June 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29394892/acacia-hydaspica-r-parker-ameliorates-cisplatin-induced-oxidative-stress-dna-damage-and-morphological-alterations-in-rat-pulmonary-tissue
#2
Tayyaba Afsar, Suhail Razak, Ali Almajwal, Muhammad Rashid Khan
BACKGROUND: Cisplatin (CP) drug is platinum compounds used for the treatment of various human malignancies. However, adverse outcomes related to CP restrict its usage. Acacia hydaspica is a natural shrub with various pharmacological properties. The current investigation aimed to assess the protective potential of A. hydaspica polyphenol rich ethyl acetate extract (AHE) against cisplatin (CP) induced pulmonary toxicity. METHODS: Rats were divided into six groups...
February 2, 2018: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/29362484/whole-organ-blood-and-lymphatic-vessels-imaging-wobli
#3
Roni Oren, Liat Fellus-Alyagor, Yoseph Addadi, Filip Bochner, Hila Gutman, Shani Blumenreich, Hagit Dafni, Nava Dekel, Michal Neeman, Shlomi Lazar
Thin section histology is limited in providing 3D structural information, particularly of the intricate morphology of the vasculature. Availability of high spatial resolution imaging for thick samples, would overcome the restriction dictated by low light penetration. Our study aimed at optimizing the procedure for efficient and affordable tissue clearing, along with an appropriate immunofluorescence labeling that will be applicable for high resolution imaging of blood and lymphatic vessels. The new procedure, termed whole organ blood and lymphatic vessels imaging (WOBLI), is based on two previously reported methods, CLARITY and ScaleA2...
January 23, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29354887/delayed-recanalization-promotes-functional-recovery-in-rats-following-permanent-middle-cerebral-artery-occlusion
#4
Devin William McBride, Guangyong Wu, Derek Nowrangi, Jerry J Flores, Liang Hui, Paul R Krafft, John H Zhang
Most large vessel stroke patients have permanent occlusion, for which there are no current treatment options. Recent case studies have indicated delayed recanalization, that is recanalization outside of the 6-h treatment window, may lead to improved outcome. We hypothesized that delayed recanalization will restore cerebral blood flow, leading to improved function in rats. Male SD rats were subjected to pMCAO or sham surgery. Delayed recanalization was performed on either day 3, 7, or 14 after pMCAO in a subset of animals...
January 21, 2018: Translational Stroke Research
https://www.readbyqxmd.com/read/29336116/the-retina-of-the-collared-peccary-pecari-tajacu-structure-and-function
#5
Raaya Ezra-Elia, Maya Ross, Nili Avni-Magen, Asaf Berkowitz, Ron Ofri
OBJECTIVE: To study retinal morphology and function in the collared peccary, an ungulate species distantly related to the domestic pig. ANIMAL STUDIES: Twenty captive peccaries anesthetized for routine health examinations. Procedures No abnormalities were noted on a complete ophthalmic examination. Fundi were examined ophthalmoscopically and photographed. The eyes of an individual that died of unrelated, nonocular reasons were studied histologically and by immunohistochemistry...
January 16, 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29304539/expression-and-cellular-localization-of-cxcr4-and-cxcl12-in-human-carotid-atherosclerotic-plaques
#6
Sophie Merckelbach, Emiel P C van der Vorst, Michael Kallmayer, Christoph Rischpler, Rainer Burgkart, Yvonne Döring, Gert-Jan de Borst, Markus Schwaiger, Hans-Henning Eckstein, Christian Weber, Jaroslav Pelisek
BACKGROUND AND AIMS:  The CXCR4/CXCL12 complex has already been associated with progression of atherosclerosis; however, its exact role is yet unknown. The aim of this study was to analyse the expression and cellular localization of CXCL12 and its receptor CXCR4 in human carotid atherosclerotic plaques. METHODS:  Carotid plaques (n = 58; 31 stable, 27 unstable, based on histological characterization of plaque morphology) were obtained during carotid endarterectomy, and 10 healthy vessels were used as a control...
January 2018: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/29282503/a-morphological-comparison-of-the-extraforaminal-ligament-between-the-cervical-and-thoracic-regions
#7
Pawaree Nonthasaen, Hisayo Nasu, Eiichiro Kagawa, Keiichi Akita
PURPOSE: The current study was conducted to clarify the morphology of the extraforaminal ligament (EFL) at the cervicothoracic junction and to compare the attachment of the EFL and the positional relation between the EFL and the spinal nerves, additionally to clarify the details within the connecting bundles at the cervicothoracic junction. MATERIALS AND METHODS: The EFLs from the 4th cervical to the 4th thoracic vertebrae were dissected in 56 sides of 28 Japanese cadavers (11 males, 17 females)...
December 27, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/29282223/combined-mutation-of-apc-kras-and-tgfbr2-effectively-drives-metastasis-of-intestinal-cancer
#8
Eri Sakai, Mizuho Nakayama, Hiroko Oshima, Yuta Kouyama, Atsushi Niida, Satoshi Fujii, Atsushi Ochiai, Keiichi I Nakayama, Koshi Mimori, Yutaka Suzuki, Chang Pyo Hong, Chan-Young Ock, Seong-Jin Kim, Masanobu Oshima
Colorectal cancer (CRC) is driven by the accumulation of driver mutations, but the contributions of specific mutations to different steps in malignant progression is not fully understood. In this study, we generated mouse models harboring different combinations of key CRC driver mutations (Apc, Kras, Tgfbr2, Trp53, Fbxw7) in intestinal epithelial cells to comprehensively investigate their roles in the development of primary tumors and metastases. Apc∆716 mutation caused intestinal adenomas and combination with Trp53R270H mutation or Tgfbr2 deletion induced submucosal invasion...
December 27, 2017: Cancer Research
https://www.readbyqxmd.com/read/29280854/spermatocytic-seminoma-a-report-of-85-cases-emphasizing-its-morphologic-spectrum-including-some-aspects-not-widely-known
#9
Rong Hu, Thomas M Ulbright, Robert H Young
Spermatocytic seminoma (or, alternatively, spermatocytic tumor) of the testis is rare and errors in pathologic diagnosis are still made. As it has a good prognosis, except when it, rarely, undergoes sarcomatous transformation, accurate diagnosis and differentiating it from usual seminoma and other malignant neoplasms such as lymphoma are crucial. To potentially contribute information of diagnostic aid we reviewed the largest series of cases reported to date to characterize in detail their histologic spectrum...
December 26, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29251202/cd15-as-a-marker-of-fetoplacental-endothelial-immaturity-in-iugr-placentas
#10
Gayatri Ravikumar, Julian Crasta, Jyothi S Prabhu, Tinku Thomas, Pratibha Dwarkanath, Annamma Thomas, Anura V Kurpad, Tirumalai Srinivas Sridhar
BACKGROUND: Structural or functional defects in the placenta, are the primary cause of growth restriction of the fetus. Morphological examination of such placentas from intrauterine growth restricted (IUGR) fetuses often appears deceptively normal. Evaluation of angiogenesis and fetoplacental vasculature is critical to understand the underlying pathogenesis of fetal growth restriction in both idiopathic as well as cases where it is thought to be secondary to complications like preeclampsia (PE)...
December 17, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29240251/progenitor-cells-from-different-zones-of-human-cartilage-and-their-correlation-with-histopathological-osteoarthritis-progression
#11
V P Mantripragada, W A Bova, C Boehm, N S Piuzzi, N A Obuchowski, R J Midura, G F Muschler
Cell-based therapies development for the treatment of osteoarthritis (OA) requires an understanding of the disease progression and attributes of the cells resident in cartilage. This study focused on quantitative assessment of the concentration and biological potential of stem and progenitor cells resident in different zones of cartilage displaying macroscopic Outerbridge grade 1-2 OA, and their correlation with OA progression based on established histologic scoring system. Lateral femoral condyles were collected from fifteen patients with idiopathic OA and varus knees undergoing total knee arthroplasty...
December 14, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29216530/brain-angiometastasis-from-a-non-seminomatous-germ-cell-tumor-a-case-report
#12
Alejandro Monroy-Sosa, Gervith Reyes-Soto, Bernardo Cacho-Díaz, Martín Granados-García, Allan Hernández Estrada, Ana María Cano-Valdez, Ángel Herrera-Gómez
INTRODUCTION: Brain metastasis from non-seminomatous germ cell tumors (NSGCT) is rare. Herein, we describe the second reported case of brain metastasis from a NSGCT with high-flow arteriovenous (AV) shunts, and propose a novel surgical treatment plan. CLINICAL CASE: The patient was a 34-year-old male who presented with hemiparesis and hemianesthesia. Magnetic resonance angiography revealed three vascular lesions with afferent vessels and efferent vessels. Angiography displayed two high-flow AV shunts...
December 2, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29212544/plaque-volume-and-plaque-risk-profile-in-diabetic-vs-non-diabetic-patients-undergoing-lipid-lowering-therapy-a-study-based-on-3d-intravascular-ultrasound-and-virtual-histology
#13
Tomas Kovarnik, Zhi Chen, Gary S Mintz, Andreas Wahle, Kristyna Bayerova, Ales Kral, Martin Chval, Karel Kopriva, John Lopez, Milan Sonka, Ales Linhart
BACKGROUND: Coronary atherosclerosis progresses faster in patients with diabetes mellitus (DM) and causes higher morbidity and mortality in such patients compared to non-diabetics ones (non-DM). We quantify changes in plaque volume and plaque phenotype during lipid-lowering therapy in DM versus non-DM patients using advanced intracoronary imaging. METHODS: We analyzed data from 61 patients with stable angina pectoris included to the PREDICT trial searching for prediction of plaque changes during intensive lipid-lowering therapy (40 mg rosuvastatin daily)...
December 7, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/29193449/characterization-of-glioblastoma-in-an-orthotopic-mouse-model-with-magnetic-resonance-elastography
#14
Katharina Schregel, Navid Nazari, Michal O Nowicki, Miklos Palotai, Sean E Lawler, Ralph Sinkus, Paul E Barbone, Samuel Patz
Glioblastoma (GBM) is the most common primary brain tumor. It is highly malignant and has a correspondingly poor prognosis. Diagnosis and monitoring are mainly accomplished with MRI, but remain challenging in some cases. Therefore, complementary methods for tumor detection and characterization would be beneficial. Using magnetic resonance elastography (MRE), we performed a longitudinal study of the biomechanical properties of intracranially implanted GBM in mice and compared the results to histopathology. The biomechanical parameters of viscoelastic modulus, shear wave speed and phase angle were significantly lower in tumors compared with healthy brain tissue and decreased over time with tumor progression...
November 29, 2017: NMR in Biomedicine
https://www.readbyqxmd.com/read/29181641/effect-of-photobiomodulation-on-connective-tissue-remodeling-and-regeneration-of-skeletal-muscle-in-elderly-rats
#15
Adriana de Brito, Agnelo Neves Alves, Beatriz Guimaraes Ribeiro, Daniel Victor D Emilio Barbosa, Erick Moreno Ramos Magalhaes, Kristianne Porta Santos Fernandes, Sandra Kalil Bussadori, Juliana Barbosa Goulardins, Raquel Agnelli Mesquita-Ferrari
The purpose of this study was to evaluate the effects of low-level laser therapy (LLLT) on morphological aspects, IL-6 and IL-1β expressions, as well as the distribution and organization of collagen in the tibialis anterior (TA) muscle of elderly rats submitted to cryoinjury. Histological photomicrographs were taken of TA muscles stained with HE and picrosirius red. Immunohistochemistry was used for the evaluation of IL-6 and IL-1β. Male Wistar rats, aged 20 months, were distributed into three groups: (1) control animals not injured or treated with LLLT (n = 5), (2) cryoinjury without LLLT treatment (n = 15), and (3) cryoinjury treated with infrared LLLT (n = 15)...
November 27, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/29175268/peripheral-vascular-atherosclerosis-in-a-novel-pcsk9-gain-of-function-mutant-ossabaw-miniature-pig-model
#16
Ahmad F Hedayat, Kyoung-Ha Park, Taek-Geun Kwon, John R Woollard, Kai Jiang, Daniel F Carlson, Amir Lerman, Lilach O Lerman
Hypercholesterolemia is a major risk factor for atherosclerosis. Remaining challenges in the management of atherosclerosis necessitate development of animal models that mimic human pathophysiology. We characterized a novel mutant pig model with DNA transposition of D374Y gain-of-function (GOF) cDNA of chimp proprotein convertase subtilisin/kexin type-9 (PCSK9), and tested the hypothesis that it would develop peripheral vascular remodeling and target organ injury in the kidney. Wild-type or PCSK9-GOF Ossabaw miniature pigs fed a standard or atherogenic diet (AD) (n = 7 each) were studied in vivo after 3 and 6 months of diet...
November 3, 2017: Translational Research: the Journal of Laboratory and Clinical Medicine
https://www.readbyqxmd.com/read/29173610/endothelial-nitric-oxide-synthase-induced-hypertrophy-and-vascular-dysfunction-contribute-to-the-left-ventricular-dysfunction-in-caveolin-1-mice
#17
Annette Ebner, Nadine Kuerbis, Aljoscha Brandt, Birgit Zatschler, Sönke Weinert, David M Poitz, Bernd Ebner, Antje Augstein, Carsten Wunderlich, Ali El-Armouche, Ruth H Strasser
BACKGROUND: Caveolin-1 (Cav1)-/- mice display impaired development of left ventricular pressure and increased left ventricular wall thickness but no dilated ventricle; these are typical findings in patients with heart failure with preserved ejection fraction (HfpEF). Aiming to clarify if dysfunctional endothelial nitric oxide synthase (eNOS) influences cardiomyocyte contractility, cardiac conduction system, or afterload/vascular resistance, we studied Cav1-/-/eNOS-/- mice. METHODS: Cardiac function was assessed in vivo by pressure-volume-catheterization of the left ventricle, echocardiography and electrocardiography...
December 2017: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/29167169/cutting-edge-microangio-ct-new-dimensions-in-vascular-imaging-and-kidney-morphometry
#18
Ruslan Hlushchuk, Cédric Zubler, Sébastien Barré, Carlos Correa Shokiche, Laura Schaad, Raphael Röthlisberger, Monika L Wnuk, Christoph Daniel, Oleksiy Khoma, Stefan A Tschanz, Mauricio Reyes, Valentin Djonov
In the last decades the contrast-enhanced microCT-imaging of whole animal kidney became increasingly important. The visualization was mainly limited to middle-sized vessels. Since modern desktop microCT-scanners provide the necessary detail resolution, we developed an approach for rapid visualization and consistent assessment of kidney vasculature and glomeruli number. This method is based on μAngiofil®, a new polymerizing contrast agent with homogenous X-ray absorption, which provides continuous filling of the complete vasculature and enables correlative imaging approaches...
November 22, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/29155760/echocardiographic-and-histological-examination-of-cardiac-morphology-in-the-mouse
#19
Delphine Baudouy, Jean-François Michiels, Ana Vukolic, Kay-Dietrich Wagner, Nicole Wagner
An increasing number of genetically modified mouse models has become available in recent years. Moreover, the number of pharmacological studies performed in mice is high. Phenotypic characterization of these mouse models also requires the examination of cardiac function and morphology. Echocardiography and magnetic resonance imaging (MRI) are commonly used approaches to characterize cardiac function and morphology in mice. Echocardiographic and MRI equipment specialized for use in small rodents is expensive and requires a dedicated space...
October 26, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29136193/early-first-trimester-uteroplacental-flow-and-the-progressive-disintegration-of-spiral-artery-plugs-new-insights-from-contrast-enhanced-ultrasound-and-tissue-histopathology
#20
V H J Roberts, T K Morgan, P Bednarek, M Morita, G J Burton, J O Lo, A E Frias
STUDY QUESTION: Does the use of a vascular contrast agent facilitate earlier detection of maternal flow to the placental intervillous space (IVS) in the first trimester of pregnancy? SUMMARY ANSWER: Microvascular filling of the IVS was demonstrated by contrast-enhanced ultrasound from 6 weeks of gestation onwards, earlier than previously believed. WHAT IS KNOWN ALREADY: During placental establishment and remodeling of maternal spiral arteries, endovascular trophoblast cells invade and accumulate in the lumen of these vessels to form 'trophoblast plugs'...
November 10, 2017: Human Reproduction
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