keyword
MENU ▼
Read by QxMD icon Read
search

morphology AND histology AND vessels

keyword
https://www.readbyqxmd.com/read/28822901/morphological-and-molecular-differences-in-corpus-luteum-of-pregnant-sows-from-divergent-genetic-groups
#1
Karine A Costa, Walmir da Silva, Renata Veroneze, José C Montes, Lucas L Verardo, Margareth E Botelho, Márcio S Duarte, Mariana M Neves, Paulo S Lopes, José D Guimarães, Susana A Teixeira, Laene Alcantara, Simone E F Guimarães
Comprehending mechanisms controlling corpus luteum (CL) angiogenesis and apoptosis in pregnant sows is essential to understand the physiological role of these processes in CL function, progesterone production and consequently in conceptus development and prenatal mortality. CL from 54 sows from two genetic groups, a commercial line (COM) and the local Piau breed (LPB), were obtained for gene expression (n = 3 COM; n = 6 LPB), histological and protein analysis (n = 3 COM; n = 3 LPB), divided in six gestational ages (seven, 15, 30, 45, 60 and 90 days)...
July 29, 2017: Theriogenology
https://www.readbyqxmd.com/read/28813122/morphological-alterations-in-the-jejunal-mucosa-of-aged-rats-and-the-possible-protective-role-of-green-tea
#2
Zeinab Abel-Rehim Hassan, Agata Zauszkiewicz-Pawlak, Shaimaa A Abdelrahman, Sami Algaidi, Maha Desouky, Sally M Shalaby
INTRODUCTION: Gastrointestinal disorders become more prevalent with ageing. This study is aimed to describe morphological changes that occur in the jejunal mucosa of male albino rats as a result of ageing and the protective effect of green tea supplements. MATERIAL AND METHODS: The experiment was performed on sixty rats: thirty young-adult (6-month old, body mass 200-220 g) and thirty old (24-month-old, body mass 220-260 g) animals. Each group was further divided into two subgroups (n = 15 each): control rats and green tea-treated rats that received 1...
August 16, 2017: Folia Histochemica et Cytobiologica
https://www.readbyqxmd.com/read/28807411/timp3-is-regulated-by-pericytes-upon-shear-stress-detection-leading-to-a-modified-endothelial-cell-response
#3
C Schrimpf, T Koppen, J S Duffield, U Böer, S David, W Ziegler, A Haverich, O E Teebken, M Wilhelmi
OBJECTIVES: Atherosclerosis is a hallmark of cardiovascular disease. Shear stress on endothelial cells has been linked to atherogenesis and to fibrous cap thinning and rupture. Pericytes reside in the sub-endothelial space of vessels and have vasoprotective effects. They are subjected to shear stress when endothelial cell integrity is disrupted. The aim was to investigate the susceptibility and response of pericytes to shear stress. METHODS: Endothelial cells and pericytes were seeded in two dimensional monocultures and co-cultures, and in a novel three dimensional co-culture system and were subjected to no, low and high shear stress (0, 10, 30 dyne/cm(2)) for 48 h...
August 11, 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28797713/image-processing-methods-for-the-structural-detection-and-gradation-of-placental-villi
#4
Zaneta Swiderska-Chadaj, Tomasz Markiewicz, Robert Koktysz, Szczepan Cierniak
The context-based examination of stained tissue specimens is one of the most important procedures in histopathological practice. The development of image processing methods allows for the automation of this process. We propose a method of automatic segmentation of placental structures and assessment of edema present in placental structures from a spontaneous miscarriage. The presented method is based on texture analysis, mathematical morphology, and region growing operations that are applicable to the heterogeneous microscopic images representing histological slides of the placenta...
August 3, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28795785/micro-computed-tomographic-analysis-of-the-radial-geometry-of-intrarenal-artery-vein-pairs-in-rats-and-rabbits-comparison-with-light-microscopy
#5
Jennifer P Ngo, Bianca Le, Zohaib Khan, Michelle M Kett, Bruce S Gardiner, David W Smith, Mayer M Melhem, Anton Maksimenko, James T Pearson, Roger G Evans
We assessed the utility of synchrotron-radiation micro-computed tomography (micro-CT) for quantification of the radial geometry of the renal cortical vasculature. The kidneys of nine rats and six rabbits were perfusion fixed and the renal circulation filled with Microfil(®) . In order to assess shrinkage of Microfil(®) , rat kidneys were imaged at the Australian Synchrotron immediately upon tissue preparation and then post fixed in paraformaldehyde and reimaged 24 hours later. The Microfil(®) shrank only 2-5% over the 24 hour period...
August 10, 2017: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/28791995/-morphological-and-immunohistochemical-features-of-severe-gastric-dysplasia-and-early-gastric-cancer
#6
L M Mikhaleva, A E Biryukov
AIM: to investigate the morphological and immunohistochemical features of severe gastric dysplasia (SGD) and early gastric cancer (EGC). MATERIAL AND METHODS: The fragments of gastric tumor tissue with adjacent mucosal portions from 50 patients aged from 34 to 79 years (mean age 63.8 years), which had been removed during organ-sparing endoscopic surgery, were histologically, histochemical, and immunohistochemically (IHC) examined. RESULTS: In EGC, there was a preponderance of intestinal-type cancer; the adjacent mucosal areas showed foci of SGD and colonic metaplasia in 100%...
2017: Arkhiv Patologii
https://www.readbyqxmd.com/read/28770484/high-resolution-mr-lymphangiography-for-planning-lymphaticovenous-anastomosis-treatment-a-single-centre-experience
#7
Maria Antonietta Mazzei, Francesco Gentili, Francesco Giuseppe Mazzei, Paolo Gennaro, Duccio Guerrieri, Andrea Nigri, Guido Gabriele, Elisabetta Weber, Alfonso Fausto, Giuseppe Botta, Luca Volterrani
PURPOSE: This article illustrates the feasibility of MR lymphangiography (MRL) for imaging lymphatic vessels in patients with lymphedema, its accuracy in distinguishing lymphatic vessels from veins, and its utility for planning Lymphaticovenous anastomosis (LVA) treatment. MATERIALS AND METHODS: We prospectively enrolled 30 patients (24 women, range 18-70, 17 cases of lower limb lymphedema, 6 cases of primary lymphedema). All the patients underwent MRL, using a 1...
August 2, 2017: La Radiologia Medica
https://www.readbyqxmd.com/read/28756496/cryopreservation-of-human-ovarian-tissue-using-the-silver-closed-vitrification-system
#8
Zhun Xiao, Yaoyao Zhang, Wei Fan
PURPOSE: The aim of this study is to evaluate the feasibility of using a hand-made silver container for the cryopreservation of human ovarian cortex. METHODS: Human ovarian cortex tissues were vitrified using an open vitrification system (OVS) of needle immersed vitrification (NIV) and two closed vitrification systems (CVS) of a plastic vial (plastic CVS) and a silver container (silver CVS). Outcomes of vitrification were evaluated morphologically and histologically by in vitro culture and xenotransplantation...
July 29, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28704481/renal-auto-transplantation-promotes-cortical-microvascular-network-remodeling-in-a-preclinical-porcine-model
#9
Souleymane Maïga, Geraldine Allain, Thierry Hauet, Jerome Roumy, Edouard Baulier, Michel Scepi, Manuel Dierick, Luc Van Hoorebeke, Patrick Hannaert, Franck Guy, Frederic Favreau
The vascular network is a major target of ischemia-reperfusion, but has been poorly investigated in renal transplantation. The aim of this study was to characterize the remodeling of the renal vascular network that follows ischemia-reperfusion along with the most highly affected cortex section in a preclinical renal transplantation model. There were two experimental groups. The first was a grafted kidney group consisting of large white pigs for which the left kidney was harvested, cold flushed, preserved for 24 h in the University of Wisconsin's preservation solution, and then auto-transplanted (n = 5); the right kidney was removed to mimic the situation of human kidney transplantation...
2017: PloS One
https://www.readbyqxmd.com/read/28678959/evaluation-of-ovarian-structures-using-computerized-microtomography
#10
Fernanda Paulini, Sacha B Chaves, José Luiz J P Rôlo, Ricardo B DE Azevedo, Carolina M Lucci
Visualization and clear understanding of the ovarian structures are important in determining the stage of oestrus, helping to diagnose several pathologies and supporting advances in reproductive technologies. In this research, computerized microtomography (microCT) was used to explore and characterize the ovarian structure of seven mammalian species. Ovaries of rats, female dog, queens, cows, mares, sows and a female donkey were used. After microCT scanning, the same samples were prepared for histologic evaluation, used here as a validation criterion...
June 29, 2017: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/28664484/the-role-of-three-dimensional-power-doppler-hysterosonography-3-dpds-in-distinguishing-atypical-polypoid-adenomyomas-apas-from-other-intrauterine-tumors-correlation-with-pathologic-findings
#11
Kalmantis Konstantinos, Daskalakis Georgios, Semertzidou Anysia, Rodolakis Alexandros
OBJECTIVE: This study was undertaken to describe the sonographic characteristics of atypical polypoid adenomyomas (APAs) of the uterus and to determine the value of three-dimensional power Doppler hysterosonography (3-DPDS) in distinguishing APA from other polypoid uterine tumors. METHODS: Ninety-five women with a mean age of 37 years (range 28-45) with a suspicious polypoid uterine tumor were referred for preoperative evaluation with 3-DPDS. Sonographic criteria used for the diagnosis of APA were based on a system that consisted of morphological characteristics, histological evaluation and power Doppler imaging...
June 29, 2017: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/28654057/murine-aortic-crush-injury-an-efficient-in-vivo-model-of-smooth-muscle-cell-proliferation-and-endothelial-function
#12
Dan Yu, George Makkar, Rajabrata Sarkar, Dudley K Strickland, Thomas S Monahan
Arterial reconstruction, whether angioplasty or bypass surgery, involves iatrogenic trauma causing endothelial disruption and vascular smooth muscle cell (VSMC) proliferation. Common murine models study small vessels such as the carotid and femoral arteries. Herein we describe an in vivo system in which both VSMC proliferation and endothelial barrier function can be simultaneously assessed in a large vessel. We studied the infrarenal aortic response to injury in C57BL/6 mice. The aorta was injured from the left renal vein to the aortic bifurcation by 30 transmural crushes of 5-seconds duration with a cotton-tipped applicator...
June 11, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28646909/the-morphological-regeneration-and-functional-restoration-of-bladder-defects-by-a-novel-scaffold-and-adipose-derived-stem-cells-in-a-rat-augmentation-model
#13
Qiong Wang, Dong-Dong Xiao, Hao Yan, Yang Zhao, Shi Fu, Juan Zhou, Zhong Wang, Zhe Zhou, Ming Zhang, Mu-Jun Lu
BACKGROUND: Due to the multilineage differentiation ability and paracrine role of adipose-derived stem cells (ASCs) for bladder defect repair, various scaffolds have been applied in combination with ASCs to promote bladder regeneration and restore bladder function. However, the low survival rate of ASCs and the difficulty of promoting bladder functional recovery are still unsolved. To explore these problems, we investigated the feasibility of a novel scaffold seeded with ASCs in a rat model of bladder augmentation...
June 24, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28631905/-rationale-of-pharmacotherapy-duration-in-patients-with-benign-prostatic-hyperplasia-a-clinical-morphological-study
#14
M E Sitdykova, D E Tsyplakov, E N Sitdykov, A R Nurtdinov
AIM: To investigate the nature of morphological alterations in the urinary bladder wall in BPH patients receiving pharmacotherapy to establish treatment time limits. MATERIALS AND METHODS: The study comprised 120 BPH patients who underwent a transvesical adenomectomy. Prior to the surgery, 110 patients received pharmacotherapy (-blockers and 5-reductase inhibitors) lasting from 1-6 months to 5-10 years. Preoperative evaluation included a standard diagnostic algorithm...
June 2017: Urologii︠a︡
https://www.readbyqxmd.com/read/28593886/correlation-between-microvessel-density-and-morphological-features-in-skin-squamous-cell-carcinoma
#15
Lena Kakasheva-Mazhenkovska, Neli Basheska, Simonida Crvenkova, Petrushevska Gordana, Liljana Milenkova, Vesna Janevska, Vladimir Serafimoski
INTRODUCTION: Abnormal angiogenesis is described in tumor growth and it facilitates its metastatic spread. Tumors with high angiogenic activity belong to the category of aggressive tumors with poor prognosis for patients. The aim of this study was to determine the blood vessels density (BVD), i.e. neovascularization at the tumor invasive front in skin squamous cell carcinoma (SCC) in order to determine its possible role in the tumor progression, and to correlate it to the blood vessels density of healthy skin and with the prognostic parameters of the TNM classification: T status, depth of tumor invasion (DI) and tumor histological grade (G), which were also correlated between each other...
March 1, 2017: Prilozi (Makedonska Akademija Na Naukite i Umetnostite. Oddelenie za Medicinski Nauki)
https://www.readbyqxmd.com/read/28575130/long-term-consequences-of-developmental-vascular-defects-on-retinal-vessel-homeostasis-and-function-in-a-mouse-model-of-norrie-disease
#16
Susanne C Beck, Yuxi Feng, Vithiyanjali Sothilingam, Marina Garcia Garrido, Naoyuki Tanimoto, Niyazi Acar, Shenliang Shan, Britta Seebauer, Wolfgang Berger, Hans-Peter Hammes, Mathias W Seeliger
Loss of Norrin signalling due to mutations in the Norrie disease pseudoglioma gene causes severe vascular defects in the retina, leading to visual impairment and ultimately blindness. While the emphasis of experimental work so far was on the developmental period, we focus here on disease mechanisms that induce progression into severe adult disease. The goal of this study was the comprehensive analysis of the long-term effects of the absence of Norrin on vascular homeostasis and retinal function. In a mouse model of Norrie disease retinal vascular morphology and integrity were studied by means of in vivo angiography; the vascular constituents were assessed in detailed histological analyses using quantitative retinal morphometry...
2017: PloS One
https://www.readbyqxmd.com/read/28573546/skoulekia-erythrini-n-sp-digenea-aporocotylidae-a-parasite-of-pagellus-erythrinus-l-perciformes-sparidae-from-the-western-mediterranean-with-an-amendment-of-the-generic-diagnosis
#17
José F Palacios-Abella, Simona Georgieva, Salvatore Mele, Juan Antonio Raga, Wolf Isbert, Aneta Kostadinova, Francisco E Montero
A new aporocotylid, Skoulekia erythrini n. sp., is described from the heart, cephalic kidney and gill blood vessels of the common pandora Pagellus erythrinus (L.) collected from several localities of the western Mediterranean off Spain. The new species differs from the type- and only species of the genus, S. meningialis Alama-Bermejo, Montero, Raga & Holzer, 2011 in possessing a symmetrical body (vs laterally curved), short tegumental spines (3-4 vs 7-10 µm) without hooked ends, diffuse (vs conspicuous) oesophageal gland-cells, a relatively longer oesophagus, a testis that is shorter in relation to body length and a much smaller seminal vesicle (17-34 × 10-26 vs 33-101 × 27-97 μm)...
July 2017: Systematic Parasitology
https://www.readbyqxmd.com/read/28570508/en-face-preparation-of-mouse-blood-vessels
#18
Kyung Ae Ko, Keigi Fujiwara, Sunil Krishnan, Jun-Ichi Abe
Sections of paraffin embedded tissues are routinely used for studying tissue histology and histopathology. However, it is difficult to determine what the three-dimensional tissue morphology is from such sections. In addition, the sections of tissues examined may not contain the region within the tissue that is necessary for the purpose of the ongoing study. This latter limitation hinders histopathological studies of blood vessels since vascular lesions develop in a focalized manner. This requires a method that enables us to survey a wide area of the blood vessel wall, from its surface to deeper regions...
May 19, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28556893/a-component-by-component-characterisation-of-high-risk-atherosclerotic-plaques-by-multiphoton-microscopic-imaging
#19
M Jain, B Wu, D Pisapia, S Salvatore, S Mukherjee, N Narula
AIMS: Atherosclerotic plaques vulnerable to rupture are almost always inflamed, and carry a large lipid core covered by a thin fibrous cap. The other components may include neovascularisation, intraplaque haemorrhage and spotty calcification. In contrast, stable plaques are characterised by a predominance of smooth muscle cells and collagen, and lipid core is usually deep seated or absent. This study is a proof of principle experiment to evaluate the feasibility of multiphoton microscopy (MPM) to identify aforementioned plaque components...
May 30, 2017: Journal of Microscopy
https://www.readbyqxmd.com/read/28525341/morphological-analysis-of-testicles-in-cats-with-disorders-of-sex-development
#20
S Dzimira, W Nizanski, J A Madej
Disorders of sex development (DSD) are rare in cats. They can be caused by chromosomal aberrations, gene mutations or other undefined factors. The aim of the present study was to compare the histological structure and immunohistochemical reactivity of testes in cats with DSD and in healthy cats. The research material consisted of the gonads of four cats - phenotypic males with an incorrect structure of the reproductive system. The control group consisted of the testes of four healthy cats - routinely castrated phenotypical males...
March 28, 2017: Polish Journal of Veterinary Sciences
keyword
keyword
119538
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"