Haemangioma in the oesophagus of a red-eared slider ( Trachemys scripta elegans )

2009 ◽  
Vol 57 (4) ◽  
pp. 477-484 ◽  
Author(s):  
János Gál ◽  
Csaba Jakab ◽  
Zoltán Szabó ◽  
Péter Pazár ◽  
Roland Psáder ◽  
...  
Keyword(s):  
Endothelial Cells ◽  
Blood Vessels ◽  
Cross Section ◽  
Initial Diagnosis ◽  
Trachemys Scripta ◽  
Trachemys Scripta Elegans ◽  
Poor Condition ◽  
First Time

A haemangioma developing in the wall of the oesophagus and protruding into its cavity is reported for the first time from a Red-eared Slider ( Trachemys scripta elegans ). As the tumour mechanically hampered swallowing, the animal was unable to eat and consequently developed a poor condition. Histopathology of the tumour revealed all characteristics of a haemangioma: the blood-filled blood-vessels having an irregular cross-section were lined with endothelial cells. Claudin-5 immunohistochemical antibodies were employed for characterising the tumour, and this examination confirmed our initial diagnosis of a haemangioma.

scholarly journals Anatomical Study of Red-eared TurteTail (Trachemys scripta elegans)

2019 ◽  
Vol 2 ◽  
pp. 137-140
Author(s):  
Putri Nofita ◽  
Muhammad Ja’far Luthfi ◽  
Reza Sukma Dewi
Keyword(s):  
Anatomical Study ◽  
Slow Motion ◽  
Axial Skeleton ◽  
Trachemys Scripta ◽  
Histological Structure ◽  
Fat Tissue ◽  
Trachemys Scripta Elegans ◽  
Alizarin Red ◽  
First Time ◽  
Hematoxylin Eosin

Turtles are reptiles armored backs hard, slow motion, appearing for the first time about 200 million years ago and relative ly unchanged for 150 million years. This study aims to determine the anatomical structure of the axial skeleton and determine the histologic structure of red-eared turtles (Trachemys scripta elegans) females. The method used, among others, Alizarin Red S staining Alcian Blue, methods of paraffin with Hematoxylin-eosin staining (HE) and Mallory acid fuchsin and used 3 adult turtles 3 years old. The results showed that vertebral caudalis red-eared turtles (Trachemys scripta elegans) females composed of true bone, vertebrae-type amphicoelous not have plains autotomy and histology red-eared turtles (Trachemys scripta elegans) females resemble histological structure other tail reptiles with some differences that only have 4 files do not have the muscle and fat tissue.

scholarly journals Morphofunctional changes of structural components of masticatory muscles of mature animals in mercazolilum-induced hypothyroidism

2018 ◽  
Vol 24 (4) ◽  
pp. 5-14
Author(s):  
N.T. Sahan
Keyword(s):  
Endothelial Cells ◽  
Blood Vessels ◽  
Cross Section ◽  
Masseter Muscle ◽  
Masticatory Muscles ◽  
Male Rats ◽  
Vascular Pattern ◽  
Arterial Lumen ◽  
Muscular Fiber ◽  
Cross Striation

The damage of the muscular system is one of the frequent complications in thyroid diseases, but today there is no unanimous view on the morphofunctional changes in masticatory muscles in hypothyroidism. The purpose of this study was to determine the peculiarities of the structural organization of the masseter and lateral pterygoid muscles of mature rats in various stages of experimentally modeled hypothyroidism. The study was performed on the masticatory muscles of mature male rats during the 14th, 21st, 28th days of the development of mercazolilum-induced hypothyroidism. The following research methods were used: injection method of study of the circulatory bed of the masticatory muscles; histological examination of blood vessels and tissue elements of the masticatory muscles; electron microscopic examination; morphometric analysis (mean value of blood vessels’ lumen and thickness of their walls; number of capillaries in 1 μm2 of cross section of muscular fiber; the quantity of the capillaries at one muscular fiber, the percentage of oxidative (OMF), oxidative-glycolytic (OGMF), glycolytic (GMF) muscular fibers, average muscular fiber area, biochemical methods, and statistical analysis was conducted out using the software RV.3.0. The development of hypothyroidism is indicated by the reduction of hormones of the thyroid gland in the blood. During the 14th day of the experiment in the arterial bed in the injection of Parisian blue in the masticatory muscles there is a deformation of the vascular pattern. The number of hemocapillaries decreases. The edema of the cytoplasm of endothelial cells is submicroscopically marked. In muscular fibers, the cross-striation is broken, the area of their cross-section is enlarged, the dilation and vacuolization are observed in the endomysium. A change was determined in the quantitative distribution of all types of fibers (the number of OGMF and OMF decreased, and the amount of GMF increased). At the ultramicroscopic level, there were observed pronounced changes in all types of muscular fibers, especially in the GMF and OMF of the masseter muscle. On the 21st day, a significant deformation of the vascular pattern was observed, with a decrease of the arterial lumen and an increase of the vein lumen. The number of hemocapillaries continues to decrease. Ultra-structurally, in the endothelial cells of the hemocapillaries of the masticatory muscles, edema changes progress. In muscular fibers there is a loss of cross-striation and observed swelling. There is a tendency to decrease of the number of OGMF and OMF and increase of the amount of GMF. At the ultramicroscopic level, there are pronounced changes in all types of fibers, especially in the masseter muscle. During the 28th day of mercazolilum-induced hypothyroidism changes in the vessels and muscle fibers are progressing. Described morphological changes are associated with the dynamics of the trace substances’ composition. Thus, in mercazolilum-induced hypothyroidism in the masticatory muscles there are edematous changes both in the vascular bed and in muscular fibers. Moreover, the changes are deepened depending on the duration of the experiment.

An effectiveness of training program on COVID-19 among healthcare students: A cross section study

2020 ◽  
Vol 11 (SPL1) ◽  
pp. 1250-1254
Author(s):  
Kurvatteppa Halemani ◽  
Merlin Cheema ◽  
Shabana Khatun ◽  
Yadidya ◽  
Bhumika Singh ◽  
...  
Keyword(s):  
Nursing Students ◽  
Training Program ◽  
Cross Section ◽  
Sampling Technique ◽  
Teaching Session ◽  
Post Intervention ◽  
Post Test ◽  
College Of Nursing ◽  
Novel Coronavirus ◽  
First Time

The pandemic COVID-19 is a highly infected disease caused by a novel coronavirus or SARS-Cov-2. The virus was reported for the first time  December 2019 in, China's Wuhan province. Later the virus has broken down into the world and claimed millions of lives. In India, the disease was reported for the first time in Kerala on 30th January 2020. a cross-section one group pre-test & post-test research design was used among the 40 final year BSc nursing students, College of Nursing SGPGIMS, Lucknow India. Samples were selected based on purposive sampling technique and sample criteria. An instrument, the first tool included demographic characteristics Similarly, second instrument used for knowledge assessment. After pre-test assessment, a teaching session was held at the seminar room, college of nursing SGPGIMS Lucknow, India. Subsequently post assessment was held after intervention.  A total of 40 participants responded to the study. Demographic variables like 30(75%) participants had less than 22 years of age, 22(55%) were girls, 14(35%) families income found INR 10000-15000, and the majority of participants obtained COVID-19 related knowledge from news paper16(40%). A gender was found significant with pretest knowledge, and other variables weren't found significant (P=0.05). Knowledge mean & standard deviation in pre & post-intervention, 11.90±2.16 vs15.82±1.39. The mean difference was found in a pre-test & post-test-1 &post-test-2, 3.9, 5.02, & 1.1, respectively. The effectiveness of the training program was checked by paired t-test -10.20 & -13.93, P=0.00.  The study revealed that the teaching session was efficient in the COVID-19 program among BSc nursing students.

Action of Corynebacterium ovis exotoxin on endothelial cells of blood vessels

Nature ◽  
1978 ◽  
Vol 271 (5642) ◽  
pp. 246-248 ◽  
Author(s):  
H. R. CARNE ◽  
ELEANOR O. ONON
Keyword(s):  
Endothelial Cells ◽  
Blood Vessels

scholarly journals Non-productive angiogenesis disassembles Aß plaque-associated blood vessels

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Maria I. Alvarez-Vergara ◽  
Alicia E. Rosales-Nieves ◽  
Rosana March-Diaz ◽  
Guiomar Rodriguez-Perinan ◽  
Nieves Lara-Ureña ◽  
...  
Keyword(s):  
Endothelial Cells ◽  
Blood Vessels ◽  
Molecular Signature ◽  
Loss Of Function ◽  
Local Loss ◽  
Microglial Phagocytosis ◽  
Vascular Phenotype ◽  
Cerebral Microvasculature ◽  
Vascular Component

AbstractThe human Alzheimer’s disease (AD) brain accumulates angiogenic markers but paradoxically, the cerebral microvasculature is reduced around Aß plaques. Here we demonstrate that angiogenesis is started near Aß plaques in both AD mouse models and human AD samples. However, endothelial cells express the molecular signature of non-productive angiogenesis (NPA) and accumulate, around Aß plaques, a tip cell marker and IB4 reactive vascular anomalies with reduced NOTCH activity. Notably, NPA induction by endothelial loss of presenilin, whose mutations cause familial AD and which activity has been shown to decrease with age, produced a similar vascular phenotype in the absence of Aß pathology. We also show that Aß plaque-associated NPA locally disassembles blood vessels, leaving behind vascular scars, and that microglial phagocytosis contributes to the local loss of endothelial cells. These results define the role of NPA and microglia in local blood vessel disassembly and highlight the vascular component of presenilin loss of function in AD.

scholarly journals On the shape of cicada’s wing leading-edge cross section

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Rachel M. Starkweather ◽  
Svetlana V. Poroseva ◽  
David T. Hanson
Keyword(s):  
Cross Section ◽  
Insect Flight ◽  
Leading Edge ◽  
Flight Performance ◽  
Cross Section Shape ◽  
Section Shape ◽  
First Time

AbstractAn important role that the leading-edge cross-section shape plays in the wing flight performance is well known in aeronautics. However, little is known about the shape of the leading-edge cross section of an insect’s wing and its contribution to remarkable qualities of insect flight. In this paper, we reveal, in the first time, the shape of the leading-edge cross section of a cicada’s wing and analyze its variability along the wing. We also identify and quantify similarities in characteristic dimensions of this shape in the wings of three different cicada species.

scholarly journals Relationship between tissue factor expression and deposition of fibrin, platelets, and leukocytes on cultured endothelial cells under venous blood flow conditions

Blood ◽  
1993 ◽  
Vol 81 (8) ◽  
pp. 2050-2058 ◽  
Author(s):  
D Kirchhofer ◽  
KS Sakariassen ◽  
M Clozel ◽  
TB Tschopp ◽  
P Hadvary ◽  
...  
Keyword(s):  
Endothelial Cells ◽  
Tissue Factor ◽  
Cross Section ◽  
Leukocyte Adhesion ◽  
Venous Blood ◽  
Cell Contact ◽  
Venous Blood Flow ◽  
Necrosis Factor Alpha ◽  
Endothelial Surface ◽  
Platelet Aggregates

Abstract Endothelial cell-mediated coagulation and leukocyte adhesion are processes that might be connected by the generation of thrombin. To examine the interaction of procoagulant and proadhesive activity, cultures of endothelial cells were stimulated with tumor necrosis factor-alpha, which resulted in the surface expression of tissue factor. Subsequent exposure to human nonanticoagulated blood at a shear rate of 100 s-1 in a parallel plate perfusion device led to the deposition of polymerized fibrin, which covered 63% of the endothelial surface. In addition, numerous platelet aggregates (71 per 10 mm cross- section) and leukocytes (53 +/- 6/mm2) were deposited on stimulated endothelial cells, whereas no fibrin and only a few platelet aggregates (4 +/- 1 per 10 mm cross-section) and leukocytes (6 +/- 1/mm2) were detected on control cells. A significant portion of the adherent leukocytes bound to fibrin and platelets. However, when the deposition of fibrin and platelet aggregates was inhibited with the anti-tissue factor antibody HTFI-7B8 by 100% and 86%, respectively, leukocyte adherence remained unchanged (68 +/- 6/mm2). This indicated that leukocytes could efficiently adhere to endothelial cells through direct cell-cell contact independent of both thrombin and deposited fibrin. Moreover, this direct adhesion of leukocytes to the endothelial surface was reduced twofold to threefold when fibrin deposition occurred. These data suggest a relationship between endothelial procoagulant and proadhesive properties in that tissue factor-initiated coagulation may contribute to leukocyte adhesion through the formation of an adhesive fibrin/platelet meshwork but concurrently prevents the adhesive endothelial surface to bind leukocytes at its full capacity.

scholarly journals INABILITY TO INDUCE TYMPANIC SQUAMOUS METAPLASIA USING ORGANOCHLORINE COMPOUNDS IN VITAMIN A-DEFICIENT RED-EARED SLIDERS (TRACHEMYS SCRIPTA ELEGANS)

2008 ◽  
Vol 44 (3) ◽  
pp. 664-669 ◽  
Author(s):  
Karl R. Kroenlein ◽  
Jonathan M. Sleeman ◽  
Steven D. Holladay ◽  
Priscilla H. Joyner ◽  
Justin D. Brown ◽  
...  
Keyword(s):  
Vitamin A ◽  
Squamous Metaplasia ◽  
Trachemys Scripta ◽  
Organochlorine Compounds ◽  
Trachemys Scripta Elegans

scholarly journals Computational analysis revealing that K634 and T681 mutations modulate the 3D-structure of PDGFR-β and lead to sunitinib resistance

RSC Advances ◽  
2017 ◽  
Vol 7 (60) ◽  
pp. 37612-37626 ◽  
Author(s):  
Vishal Nemaysh ◽  
Pratibha Mehta Luthra
Keyword(s):  
Endothelial Cells ◽  
Growth Factor ◽  
Blood Vessels ◽  
Computational Analysis ◽  
3D Structure ◽  
Growth Factor Receptor ◽  
Platelet Derived Growth Factor ◽  
Receptor Beta

Platelet-derived growth factor receptor-beta (PDGFR-β) is expressed by endothelial cells (ECs) of tumor-associated blood vessels and regulates primarily early hematopoiesis.

Helminths from the red-eared slider Trachemys scripta elegans (Chelonia: Emydidae) in marshes from the eastern Iberian Peninsula: first report of Telorchis attenuata (Digenea: Telorchiidae)

2014 ◽  
Vol 28 ◽  
Author(s):  
Jesús Cardells ◽  
María Magdalena Garijo ◽  
Clara Marín ◽  
Santiago Vera
Keyword(s):  
Iberian Peninsula ◽  
Intestinal Tract ◽  
Trachemys Scripta ◽  
Trachemys Scripta Elegans ◽  
Emys Orbicularis ◽  
First Report ◽  
Digenean Trematode ◽  
Limited Sampling ◽  
Mauremys Leprosa ◽  
New Habitats

The present work describes the presence of a digenean in the red-eared turtle Trachemys scripta elegans (Wied-Neuwied, 1839) in marshes of the Valencian Community. The faeces and intestinal tract of 105 animals were examined. Only one helminth species was found and identified as the digenean trematode Telorchis atenuatta (Goldberger, 1911), present in the 7.6% of the animals analysed. This is the first report of the parasite in sliders from Spain. Although conclusions are preliminary due to the limited sampling, our results suggest that the presence of red-eared turtles in new habitats may increase the risk of introducing new microorganisms and new diseases with them, altering the sanitary status of the autochthonous terrapins Mauremys leprosa (Schweigger, 1812) and Emys orbicularis (Linnaeus, 1758).

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