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Kotoulas CS Foroulis C Letsas K Kostikas K Konstantinou M 《World journal of surgical oncology》2003,1(1):24
Background
Cardiac tamponade as the initial manifestation of metastatic cancer is a rare clinical entity. Furthermore, a thoraco-biliary fistula is another rare complication of echinococcosis due to rupture of hydatid cysts located at the upper surface of the liver to the pleural or pericardial cavity. We report a case of non-small cell lung cancer with a coexisting hepatic hydatid cyst presenting as a bilious pericardial effusion. 相似文献23.
Significance of immunocytochemical expression of E-cadherin, N-cadherin and CD44 in serous effusions using liquid-based cytology 总被引:5,自引:0,他引:5
Malle D Valeri RM Photiou C Kaplanis K Andreadis C Tsavdaridis D Destouni C 《Acta cytologica》2005,49(1):11-16
OBJECTIVE: To assess the diagnostic utility of E-cadherin (E-cad), N-cadherin (N-cad) and CD44 to discriminate adenocarcinoma cells from benign and malignant mesothelial cells in body cavity fluids and to clarify the origin of cancer cells. STUDY DESIGN: A total of 120 ThinPrep (Cytyc Corp., Boxborough, Massachusetts, U.S.A.) cytologic specimens of serous effusions, which included 22 cases of reactive mesothelium, 6 cases of malignant mesothelioma and 92 cases of metastatic adenocarcinoma from various sites, were immunostained for E-cad, N-cad and CD44. RESULTS: Eighty-three of 92 metastatic adenocarcinomas (90.21%) expressed E-cad, while 1 of 6 malignant mesotheliomas and 1 of 22 cases of reactive mesothelium were positive for E-cad. All 6 cases of mesothelioma expressed N-cad, whereas most cases of metastatic adenocarcinomas were negative. CD44 immunoreactivity was seen in 18 of 22 (81.81%) benign effusions and in 21 of 92 (22.82%) metastatic adenocarcinomas. CONCLUSION: The combination of E-cad, N-cad and CD44 appears to be a useful panel for distinguishing metastatic adenocarcinoma, mesothelioma and reactive mesothelium and also for clarifying the exact histogenetic origin of cancer cells. This is of great importance in a few otherwise-insoluble cases because of differences in tumor treatment and prognosis. 相似文献
24.
Hera Konstantinou John D. McEachran James B. Woolley 《Environmental Biology of Fishes》2000,57(2):117-129
Galeus arae is currently classified as a complex of three subspecies (Galeus arae arae, Galeus arae antillensis, and Galeus arae cadenati). Morphometric and meristic analyses, size at maturity, and variation in color patterns, support the recognition of these taxa as distinct species. All species have well-developed nidamental glands and are oviparous. Galeus arae comprises two geographically disjunct populations that are not distinguishable by the characters we examined. A northern population occurs along the east and Gulf coasts of North America from South Carolina to the Mississippi delta, and the northern coast of Cuba to the north-eastern tip of the Yucatan. A southern population occurs along the Caribbean coasts of Honduras, Nicaragua, and Costa Rica, and some neighboring islands. Galeus antillensis occurs on the northern coasts of Hispaniola and Puerto Rico, and off many of the Leeward Islands. Galeus cadenati occurs off the Caribbean coasts of Panama and Colombia. Distributional data suggest that the three species are distributed allopatrically. 相似文献
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Nikos D. Koromilas Georgia Ch. Lainioti Chrisostomi Gialeli Despoina Barbouri Katerina B. Kouravelou Nikos K. Karamanos George A. Voyiatzis Joannis K. Kallitsis 《PloS one》2014,9(9)
Novel Carbon Nanotube-Polymer Hybrids were synthesized as potential materials for the development of membranes for water treatment applications in the field of Membrane Bioreactors (MBRs). Due to the toxicological concerns regarding the use of nanomaterials in water treatment as well as the rising demand for safe drinking water to protect public health, we studied the functionalization of MWCNTs and Thin-MWCNTs as to control their properties and increase their ability of embedment into porous anisotropic polymeric membranes. Following the growth of the hydrophilic monomer on the surface of the properly functionalized CNTs, that act as initiator for the controlled radical polymerization (ATRP) of sodium styrene sulfonate (SSNa), the antimicrobial quaternized phosphonium and ammonium salts were attached on CNTs-g-PSSNa through non-covalent bonding. In another approach the covalent attachment of quaternized ammonium polymeric moieties of acrylic acid-vinyl benzyl chloride copolymers with N,N-dimethylhexadecylamine (P(AA12-co-VBCHAM)) on functionalized CNTs has also been attempted. Finally, the toxicological assessment in terms of cell viability and cell morphological changes revealed that surface characteristics play a major role in the biological response of functionalized CNTs. 相似文献
26.
Athanasios Charalampopoulos Athanasios Damialis Ioannis Tsiripidis Theodoros Mavrommatis John M. Halley Despoina Vokou 《Aerobiologia》2013,29(4):455-472
We studied airborne pollen along an elevation gradient of Mt Olympos (Greece). Samples were collected on a regular basis, over the period March–October 2009, in eight elevation-different stations, by use of a portable Hirst-type volumetric sampler. Concurrently, we studied pollen production in Quercus coccifera, Q. ilex, Pinus heldreichii and P. nigra, which are dominant species in the main vegetation types of the mountain. Of the 35 pollen taxa detected in the air, 18 account for 99.1 % of the total airborne pollen. These are the main pollen taxa each contributing by at least 0.5 %. Pinaceae (32 %) followed by Quercus (24 %) and Urticaceae (18 %) are the most abundantly represented taxa. Duration of the pollen season decreases with elevation by on average 3 days for every 100 m of elevation increase or by 5 days for every Celsius-degree of temperature decrease. Pollen concentration in the air decreases with elevation for the lowland taxa; with the exception of Cupressaceae, no pattern is observed for the other main taxa. The pine and oak species studied carry comparable amounts of pollen, approximately 104 grains per flower, 108–109 per m2 of crown surface and 1010–1011 per individual; pollen production, primarily of the two Quercus species, is not responsive to environmental changes associated with elevation. Results provide evidence that, within a margin of error, airborne pollen reflects the distributions of pollen taxa on the mountain; regarding abundance, airborne pollen is representative of Quercus, but under-representative of Pinaceae. Ambrosia pollen is found at all elevations examined, although plants producing it have not been recorded on or around Mt Olympos. 相似文献
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Athanasios Damialis Christina Fotiou John M. Halley Despoina Vokou 《Trees - Structure and Function》2011,25(2):253-264
The aim of this study was to estimate the amount of pollen produced by anemophilous woody taxa with allergenic properties
and with considerable contribution in the concentration of pollen in the air of a Mediterranean city (Thessaloniki, Greece).
The taxa selected are Corylus avellana, Cupressus sempervirens var. horizontalis and var. pyramidalis, Olea europaea and Platanus orientalis; each was studied in more than one sampling stations differing in elevation, direction or both. O. europaea produced the highest number of pollen grains per flower (1.3 × 105 ± 0.1 × 105) and P. orientalis the highest per inflorescence (3.3 × 106 ± 0.2 × 106). At the level of crown, pollen grains produced were of the order of 109 per surface/volume unit for O. europaea and the two C. sempervirens varieties; for the other two taxa, they were of the order of 106. Pollen production was lower at higher elevation and northern direction and depended on the size of the floral unit sampled
(flower for O. europaea, inflorescence for all other species): the bigger the floral unit, the more pollen it contained. Our results and reports
from other areas, where C. sempervirens and O. europaea grow, show that these two Mediterranean species produce comparable amounts of pollen at the levels of inflorescence or flower,
respectively, wherever they occur. 相似文献
28.
Christina Fotiou Athanasios Damialis Nikolaos Krigas John M. Halley Despoina Vokou 《International journal of biometeorology》2011,55(1):35-50
Parietaria judaica (Urticaceae) grows abundantly in urban areas of the Mediterranean region. Its pollen is a major allergy source. We studied
the species’ distribution and abundance in and around Thessaloniki (Greece), pollen production and pollen season. We also
examined how urban pollution affects pollen viability. Our ultimate goal was to obtain an estimate of the species’ performance
and ability to expand under different environmental conditions related to climate change. We mapped P. judaica and the other Urticaceae species. In a north- and a south-facing population, we recorded the progress of P. judaica flowering and estimated the pollen content per flower, shoot and surface unit. We concurrently assessed atmospheric circulation
of Urticaceae pollen. We estimated P. judaica pollen viability and Cu, Pb and Zn concentrations in plants collected from sites differing in traffic intensity. P. judaica is the most abundant Urticaceae species in the area; its occurrence has increased dramatically over the last 100 years. Production
of flowers is intense in spring and autumn. Flowering started 12 days earlier in the south-facing population in spring, and
3 days later in autumn. Pollen production was higher in spring and in the south-facing population. Flower and pollen production
were positively correlated with the size of the plant and the flower, respectively. Copper and lead concentrations in plants
were positively correlated with pollen viability, which was higher for plants collected from high-traffic sites. P. judaica has a high phenotypic plasticity; this is a feature that promotes success of expansive and invasive species. It is also well
adapted to warm and polluted urban environments. The climatic change forecast for the Mediterranean region could provoke earlier,
longer, and more pronounced flowering and, consequently, more P. judaica pollen in the air. In return, this would result in increased severity of Parietaria pollinosis. 相似文献
29.
In the yeast Saccharomyces cerevisiae, triacylglycerol mobilization for phospholipid synthesis occurs during growth resumption from stationary phase, and this metabolism is essential in the absence of de novo fatty acid synthesis. In this work, we provide evidence that DGK1-encoded diacylglycerol kinase activity is required to convert triacylglycerol-derived diacylglycerol to phosphatidate for phospholipid synthesis. Cells lacking diacylglycerol kinase activity (e.g. dgk1Δ mutation) failed to resume growth in the presence of the fatty acid synthesis inhibitor cerulenin. Lipid analysis data showed that dgk1Δ mutant cells did not mobilize triacylglycerol for membrane phospholipid synthesis and accumulated diacylglycerol. The dgk1Δ phenotypes were partially complemented by preventing the formation of diacylglycerol by the PAH1-encoded phosphatidate phosphatase and by channeling diacylglycerol to phosphatidylcholine via the Kennedy pathway. These observations, coupled to an inhibitory effect of dioctanoyl-diacylglycerol on the growth of wild type cells, indicated that diacylglycerol kinase also functions to alleviate diacylglycerol toxicity. 相似文献
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Georgios Hadjigeorgiou Efthimios Dardiotis Georgios Tsivgoulis Triantafyllos Doskas Damianos Petrou Nikolaos Makris Nikolaos Vlaikidis Thomas Thomaidis Athanasios Kyritsis Nikolaos Fakas Xoulietta Treska Clementine Karageorgiou Stefania Sotirli Christos Giannoulis Dimitra Papadimitriou Ioannis Mylonas Evaggelos Kouremenos Georgios Vlachos Dimitrios Georgiopoulos Despoina Mademtzoglou Michalis Vikelis Elias Zintzaras 《PloS one》2014,9(11)
Multiple sclerosis (MS) results in an extensive use of the health care system, even within the first years of diagnosis. The effectiveness and accessibility of the health care system may affect patients'' quality of life. The aim of the present study was to evaluate the health care resource use of MS patients under interferon beta-1b (EXTAVIA) treatment in Greece, the demographic or clinical factors that may affect this use and also patient satisfaction with the health care system. Structured interviews were conducted for data collection. In total, 204 patients (74.02% females, mean age (SD) 43.58 (11.42) years) were enrolled in the study. Analysis of the reported data revealed that during the previous year patients made extensive use of health services in particular neurologists (71.08% visited neurologists in public hospitals, 66.67% in private offices and 48.53% in insurance institutes) and physiotherapists. However, the majority of the patients (52.45%) chose as their treating doctor private practice neurologists, which may reflect accessibility barriers or low quality health services in the public health system. Patients seemed to be generally satisfied with the received health care, support and information on MS (84.81% were satisfied from the information provided to them). Patients'' health status (as denoted by disease duration, disability status and hospitalization needs) and insurance institute were found to influence their visits to neurologists. Good adherence (up to 70.1%) to the study medication was reported. Patients'' feedback on currently provided health services could direct these services towards the patients'' expectations. 相似文献