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European Journal of Histochemistry: EJH

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https://www.readbyqxmd.com/read/29313600/dna-damage-in-acute-myeloid-leukemia-patients-of-northern-mexico
#1
Martha I Dávila-Rodríguez, Elva I Cortés-Gutiérrez, Roberto Hernández-Valdés, Karla Guzmán-Cortés, Rosa E De León-Cantú, Ricardo M Cerda-Flores, Enrique Báez-De la Fuente
The purpose of this study was to evaluate DNA damage in the whole genome of peripheral blood leukocytes from patients with acute myeloid leukemia (AML) compared with a control group using DNA breakage detection-fluorescent in situ hybridization (DBD-FISH). Our results suggest that the DNA damage detected in patients with newly diagnosed AML was similar to that observed for the controls; this might be explained by the stimulation of a repair pathway by the pathogenesis itself. These findings indicate that inhibiting the repair pathway could be proposed to enhance the efficacy of chemotherapy...
December 11, 2017: European Journal of Histochemistry: EJH
https://www.readbyqxmd.com/read/29313601/incubation-under-fluid-dynamic-conditions-markedly-improves-the-structural-preservation-in-vitro-of-explanted-skeletal-muscles
#2
Flavia Carton, Laura Calderan, Manuela Malatesta
Explanted organs and tissues represent suitable experimental systems mimicking the functional and structural complexity of the living organism, with positive ethical and economic impact on research activities. However, their preservation in culture is generally limited, thus hindering their application as experimental models for biomedical research. In the present study, we investigated the potential of an innovative fluid dynamic culture system to improve the structural preservation in vitro of explanted mouse skeletal muscles (soleus)...
November 28, 2017: European Journal of Histochemistry: EJH
https://www.readbyqxmd.com/read/29313594/effects-of-different-rearing-temperatures-on-muscle-development-and-stress-response-in-the-early-larval-stages-of-acipenser-baerii
#3
Lucia Aidos, Luisa M Pinheiro Valente, Vera Sousa, Marco Lanfranchi, Cinzia Domeneghini, Alessia Di Giancamillo
The present study aims at investigating muscle development and stress response in early stages of Siberian sturgeon when subjected to different rearing temperatures, by analysing growth and development of the muscle and by assessing the stress response of yolk-sac larvae. Siberian sturgeon larvae were reared at 16°C, 19°C and 22°C until the yolk-sac was completely absorbed. Sampling timepoints were: hatching, schooling and complete yolk-sac absorption stage. Histometrical, histochemical and immunohistochemical analyses were performed in order to characterize muscle growth (total muscle area, TMA; slow muscle area, SMA; fast muscle area, FMA), development (anti-proliferating cell nuclear antigen -PCNA or anticaspase) as well as stress conditions by specific stress biomarkers (heat shock protein 70 or 90, HSP70 or HSP90)...
November 28, 2017: European Journal of Histochemistry: EJH
https://www.readbyqxmd.com/read/29313595/the-byssus-threads-of-pinna-nobilis-a-histochemical-and-ultrastructural-study
#4
Andrea Diana, Marcella Reguzzoni, Terenzio Congiu, Antonio Rescigno, Federica Sollai, Mario Raspanti
The byssus of Pinna nobilis, the largest bivalve mollusc in the Mediterranean Sea, was investigated by histochemistry, immunohistochemistry, Transmission Electron Microscopy (TEM), Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM). At low magnification, the byssus threads appeared distinctively elliptical in cross-section, with a typical size approaching 50 x 25 micron and a featureless glassy appearance. Histochemical and immunohistochemical techniques confirmed the presence of elastic domains but the absence of collagen, which is known to be the main component in other molluscs...
November 13, 2017: European Journal of Histochemistry: EJH
https://www.readbyqxmd.com/read/29313596/miaquant-a-novel-system-for-automatic-segmentation-measurement-and-localization-comparison-of-different-biomarkers-from-serialized-histological-slices
#5
Elena Casiraghi, Mara Cossa, Veronica Huber, Licia Rivoltini, Matteo Tozzi, Antonello Villa, Barbara Vergani
In the clinical practice, automatic image analysis methods quickly quantizing histological results by objective and replicable methods are getting more and more necessary and widespread. Despite several commercial software products are available for this task, they are very little flexible, and provided as black boxes without modifiable source code. To overcome the aforementioned problems, we employed the commonly used MATLAB platform to develop an automatic method, MIAQuant, for the analysis of histochemical and immunohistochemical images, stained with various methods and acquired by different tools...
November 2, 2017: European Journal of Histochemistry: EJH
https://www.readbyqxmd.com/read/29313597/vitamin-d-and-vitamin-d-receptor-in-patients-with-ophthalmic-pterygium
#6
Cristina Maxia, Daniela Murtas, Michela Corrias, Ignazio Zucca, Luigi Minerba, Franca Piras, Cristiana Marinelli, Maria Teresa Perra
Pterygium, an ultraviolet radiation (UV)-related disease, is a relatively benign process, but since it displays tumor-like features, it has been proposed to be a neoplastic- like growth disorder. Vitamin D performs a number of functions in addition to calcium homeostasis, as inhibition of cell proliferation, activation of apoptotic pathways, and inhibition of angiogenesis. Since the antitumor actions of vitamin D are mediated primarily through the nuclear vitamin D receptor (VDR), the aim of the present study was to investigate vitamin D status in patients with pterygium and in control subjects, and VDR immunohistochemical expression in samples of pterygium and normal conjunctiva in order to evaluate a possible role of vitamin D pathway in the pathogenesis of the disease...
October 30, 2017: European Journal of Histochemistry: EJH
https://www.readbyqxmd.com/read/29313599/neurodegeneration-in-zebrafish-embryos-and-adults-after-cadmium-exposure
#7
Antonio Monaco, Teresa Capriello, Maria C Grimaldi, Valentina Schiano, Ida Ferrandino
Cadmium is a biologically non-essential metal. It is also toxic to many organs including the brain. The aim of this study was to analyse the neurodegenerative effects of this metal in embryos and adults of zebrafish exposed to sub-lethal concentrations of cadmium. The study was performed by cytochemical stainings. Six hours after fertilisation (hpf) zebrafish embryos were treated for 24 hours with 9 μM of cadmium and subsequently stained with Acridine orange in whole mount to detect apoptosis in the brain...
October 19, 2017: European Journal of Histochemistry: EJH
https://www.readbyqxmd.com/read/29313598/expressions-of-il-6-tnf-%C3%AE-and-nf-%C3%AE%C2%BAb-in-the-skin-of-chinese-brown-frog-rana-dybowskii
#8
Liqin Xi, Chen Wang, Pengyu Chen, Qi Yang, Ruiqi Hu, Haolin Zhang, Qiang Weng, Meiyu Xu
The cytokine interleukin-6 (IL-6) mediates a wide range of inflammatory and immune responses. Tumor Necrosis Factor α (TNF-α) has a myriad of pro-inflammatory effects on the skin. Nuclear factor κB (NF-κB) is a transcriptional factor that regulates a battery of genes that are critical to immune system. In this study, we investigated the localizations and expression levels of IL-6, TNF-α and NF-κB in the skin of Rana dybowskii during the breeding period and pre-hibernation. Histologically, the skin of Rana dybowskii consisted of epidermis and dermis...
October 19, 2017: European Journal of Histochemistry: EJH
https://www.readbyqxmd.com/read/29046055/topographic-distribution-pattern-of-morphologically-different-g-cells-in-the-murine-antral-mucosa
#9
Claudia Frick, Hanna Luisa Martin, Johanna Bruder, Kerstin Lang, Heinz Breer
Gastrin-secreting enteroendocrine cells (G cells) in the antrum play an important role in the regulation of gastric secretion, gastric motility and mucosal cell proliferation. Recently we have uncovered the existence of two subpopulations of G cells with pivotally different morphology and a distinct localization in the antral invaginations; the functional implications of the different G cell types are still elusive. In this study a transgenic mouse line in which EGFP is expressed under the control of a gastrin promoter was used to elucidate the distribution pattern of the two G cell types throughout the different regions of the antrum...
September 19, 2017: European Journal of Histochemistry: EJH
https://www.readbyqxmd.com/read/29046058/oocytes-maternal-information-and-functions
#10
Manuela Monti
This book presents different aspects of oocytes maturation in several animal models as the interactions oocyte-environment, the specific functions of oocytes molecules and organelles regulated by epigenetic and translational mechanisms and the evolution of maternal factors...
September 18, 2017: European Journal of Histochemistry: EJH
https://www.readbyqxmd.com/read/29046052/protective-effect-of-different-antioxidant-agents-in-uvb-irradiated-keratinocytes
#11
Sara Salucci, Sabrina Burattini, Francesca Buontempo, Alberto Maria Martelli, Elisabetta Falcieri, Michela Battistelli
Skin cells can respond to UVB-induced damage either by tolerating it, or restoring it through antioxidant activation and DNA repair mechanisms or, ultimately, undergoing programmed cell death, when damage is massive. Nutritional factors, in particular, food antioxidants, have attracted much interest because of their potential use in new preventive, protective, and therapeutic strategies for chronic degenerative diseases, including skin inflammation and cancer. Some polyphenols, present in virgin olive oil, well tolerated by organism after oral administration, show a variety of pharmacological and clinical benefits such as anti-oxidant, anti-cancer, anti-inflammatory, and neuro-protective activities...
September 18, 2017: European Journal of Histochemistry: EJH
https://www.readbyqxmd.com/read/29046057/bile-duct-ligature-in-young-rats-a-revisited-animal-model-for-biliary-atresia
#12
Matias Garrido, Camila Escobar, Constanza Zamora, Carolina Rejas, Juan Varas, Mario Párraga, Sebastian San Martin, Sandra Montedónico
Biliary atresia leads to cirrhosis in the vast majority of patients and constitutes the first cause of paediatric liver transplantation. Animal models allow us to understand the molecular basis and natural history of diseases. The aim of this study is to describe a surgically created animal model of biliary atresia with emphasis in long-term liver function. Forty-two 3-week-old Sprague-Dawley rats were randomly divided into two groups: bile duct ligature (BDL) and control. The animals were sacrificed on the 2nd, 4th, and 6th postoperative weeks...
September 13, 2017: European Journal of Histochemistry: EJH
https://www.readbyqxmd.com/read/29046051/characterization-of-the-skin-mucus-in-the-common-octopus-octopus-vulgaris-cuvier-reared-paralarvae
#13
Gianluca Accogli, Giovanni Scillitani, Donatella Mentino, Salvatore Desantis
The Octopus vulgaris farming is impaired by the high mortality of the paralarvae during the first month of life. Several factors have been investigated in this regard, but no data exist on the body surface mucus, which represents the interface with the outside environment. This study included morphometric analysis and glycoconjugates characterization of skin mucus in reared Octopus vulgaris paralarvae during the first month of life. Four types of mucous cells were distinguished:  mucous 1 (m1) and mucous 2 (m2) cells were scattered in the mantle epidermis, mucous 3 (m3) and mucous 4 (m4) in the epithelium surrounding the sucker...
September 12, 2017: European Journal of Histochemistry: EJH
https://www.readbyqxmd.com/read/29046048/bone-morphogenetic-protein-4-and-bone-morphogenetic-protein-receptors-expressions-in-the-adult-rat-eye
#14
Yuka Maruyama-Koide, Sumiko Mikawa, Takeshi Sasaki, Kohji Sato
We investigated the expressions of bone morphogenetic protein-4 (BMP4) and its receptors, bone morphogenetic protein receptor IA (BMPRIA), bone morphogenetic protein receptor IB (BMPRIB) and bone morphogenetic protein receptor II (BMPRII) in the adult rat eye. Interesting differences in expression profile were observed between BMPRIA and BMPRIB in the retina. BMPRIA-like immunoreactivity (IR) was very intensely seen in the photoreceptor layer, while BMPRIB-IR was mainly observed in the other layers. In the cornea, BMP4, BMPRIA, BMPRIB and BMPRII-IRs were abundantly seen in the cell body of basal cells in the corneal epithelium, and endothelium...
September 6, 2017: European Journal of Histochemistry: EJH
https://www.readbyqxmd.com/read/29046056/overview-of-the-optical-properties-of-fluorescent-nanoparticles-for-optical-imaging
#15
Federico Boschi, Francesco De Sanctis
Nanoparticles (NPs) include a wide group of small structures composed by very different materials and characterized by peculiar properties that make them suitable for many applications, especially imaging and drug delivery. In this overview we focus on the optical properties of fluorescent NPs available for in vivo, in vitro and ex vivo preclinical studies and detectable with the optical imaging technique alone or in combination with microscopic confocal imaging. We summarize here the basic principles of the optical detection of fluorescent NPs, elucidate which are the current issues to be resolved and possible solutions to achieve the highest sensitivity and specificity for an unbiased analysis...
August 29, 2017: European Journal of Histochemistry: EJH
https://www.readbyqxmd.com/read/29046054/porphyromonas-gingivalis-lipopolysaccharide-stimulation-in-human-periodontal-ligament-stem-cells-role-of-epigenetic-modifications-to-the-inflammation
#16
Francesca Diomede, Soundara Rajan Thangavelu, Ilaria Merciaro, Monica D'Orazio, Placido Bramanti, Emanuela Mazzon, Oriana Trubiani
Periodontitis is a chronic oral inflammatory disease produced by bacteria. Gingival retraction and bone and connective tissues resorption are the hallmarks of this disease. Chronic periodontitis may contribute to the risk of onset or progression of neuroinflammatory pathological conditions, such as Alzheimer's disease. The main goal of the present study was to investigate if the role of epigenetic modulations is involved in periodontitis using human periodontal ligament stem cells (hPDLSCs) as an in vitro model system...
August 25, 2017: European Journal of Histochemistry: EJH
https://www.readbyqxmd.com/read/29046053/ultrastructure-and-immunohistochemical-characterization-of-proteins-concerned-with-the-secretory-machinery-in-goat-ceruminous-glands
#17
Tadashi Yasui, Hiroshi Gomi, Taishi Kitahara, Azuma Tsukise
The expression of soluble N-ethyl-maleimide sensitive fusion attachment protein receptor (SNARE) proteins in apocrine glands has not been fully elucidated. In addition to performing ultrastructural observation of the ceruminous glands in goats, our study focuses on the demonstration of β-defensins, SNARE proteins and Rab3D in these glands with the use of immunohistochemical methods. The secretory cells were equipped with two types of vesicles, Golgi apparatus and abundant rough endoplasmic reticulum (ER). Additionally, in some of them, the characteristic concentric structures composed of rough ER were observed in their circum- and infranuclear parts...
August 8, 2017: European Journal of Histochemistry: EJH
https://www.readbyqxmd.com/read/29046050/immunofluorescent-characterization-of-non-myelinating-schwann-cells-and-their-interactions-with-immune-cells-in-mouse-mesenteric-lymph-node
#18
Zhongli Shi, Wayne K Greene, Philip K Nicholls, Dailun Hu, Janina E E Tirnitz-Parker, Qionglan Yuan, Changfu Yin, Bin Ma
The central nervous system (CNS) influences the immune system in a general fashion by regulating the systemic concentration of humoral substances, whereas the autonomic nervous system communicates specifically with the immune system according to local interactions. Data concerning the mechanisms of this bidirectional crosstalk of the peripheral nervous system (PNS) and immune system remain limited. To gain a better understanding of local interactions of the PNS and immune system, we have used immunofluorescent staining of glial fibrillary acidic protein (GFAP), coupled with confocal microscopy, to investigate the non-myelinating Schwann cell (NMSC)-immune cell interactions in mouse mesenteric lymph nodes...
August 7, 2017: European Journal of Histochemistry: EJH
https://www.readbyqxmd.com/read/29046049/treatment-of-diabetic-foot-ulcers-with-therapeutic-magnetic-resonance-tmr%C3%A2-improves-the-quality-of-granulation-tissue
#19
Letizia Ferroni, Chiara Gardin, Andrea De Pieri, Maria Sambataro, Elena Seganfreddo, Chiara Goretti, Elisabetta Iacopi, Barbara Zavan, Alberto Piaggesi
Diabetic foot ulcers (DFUs) often result in severely adverse outcomes, such as serious infections, hospitalization, and lower extremity amputations. In last few years, to improve the outcome of DFUs, clinicians and researchers put their attention on the application of low intensity pulsating electro-magnetic fields through Therapeutic Magnetic Resonance (TMR®). In our study, patients with DFUs have been divided into two groups: The Sham Group treated with non-functioning TMR® device, and the Active Group treated with a functioning device...
August 7, 2017: European Journal of Histochemistry: EJH
https://www.readbyqxmd.com/read/29046047/apoptosis-pattern-and-alterations-of-expression-of-apoptosis-related-factors-of-supporting-cells-in-k%C3%A3-lliker-s-organ-in-vivo-in-early-stage-after-birth-in-rats
#20
Jun Liu, Linbin Cai, Yuanyuan He, Jun Yang
Kölliker's organ is a temporary but indispensable structure in the development of the cochlea. Supporting cells (SCs) within it release adenosine 5'-triphosphate (ATP), which may play a crucial role in cochlear development before the onset of hearing. To reveal the apoptosis of Kölliker's organ in new-born rats, we studied the morphological changes and expression of apoptosis-related factors during early postnatal development. We found SCs in Kölliker's organ decreased in number and changed in appearance along the cochlea apex-to-base gradient, and the expression of caspase-3, caspase-8, caspase-9 and bcl-2 in Kölliker's organ of the cochlea fluctuated along the course of postnatal development, with an expression peak at postnatal day 3...
August 7, 2017: European Journal of Histochemistry: EJH
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