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Search Results: 1 - 10 of 461302 matches for " A. Filis "
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New Molecular Knowledge Towards the Trigemino-Cardiac Reflex as a Cerebral Oxygen-Conserving Reflex
N. Sandu,T. Spiriev,F. Lemaitre,A. Filis
The Scientific World Journal , 2010, DOI: 10.1100/tsw.2010.71
Abstract:
Opciones para el tratamiento y la disposición de los licores ácidos agotados provenientes del decapado de hierro
Bejar Moscona, Daniel,Cram Heydrich, Silice,Gutiérrez Ruiz, Margarita E.,Moreno A?orve, Filis
Revista internacional de contaminación ambiental , 1990,
Abstract: La industria de acabados de hierro en México emplea ácido sulfúricq para el tratamiento de decapado (limpieza) de sus materiales. Pocas industrias, o quizá ninguna, reciclan los licores ácidos gastados. En la mayoría de los casos los descargan directamente al sistema de drende, con la consecuente acidificación de los cuerpos de agua receptores. Se revisaron diversas opciones para resolver este problema de contaminación en el contexto de la industria mexicana, mediante el estudio de una planta ubicada en el norte de la Ciudad de México. Se caracterizaron los desagües y los licores ácidos agotados y se propusieron las siguientes posibilidades de solución: la neutralización, el reciclado y/o el reuso directo ya sea como agente reductor o como recuperador de suelos saiino-sódicos. Se consideró el reciclado como la solución óptima, tanto para plantas que utilizan H2S04 como para aquellas que emplean HCl. Los anáiisis de los desagües indicaron que los siguientes pafámetros no cumplen con las normas mexicanas en vigor: pH, Fe, Zn, Mn, Pb y Cr. Los licores agotados mostraron concentraciones de H2S04 de 5.7% w/v* y de FeSOn .7H20 de 27% w/v*, con coeficientes de variación de 15 y 8% respectivamente. Estos contenidos se encuentran en la región baja de los intervalos informados en la literatura para industrias similares de países desarrollados. Además del hierro se determinaron: Mn, Na, Zn, Ca, K, Pb, Al, Cr, Ni y Mg; los cuales se encuentran en niveles de mg/L. La presencia de estos metales debe tomarse en cuenta en la implantación de cualquiera Ele las opciones propuestas, especialmente en el caso del reciclado, dado que pueden afectar la pureza del sulfato ferroso obtenido.
Laparoscopic fenestration of multiple giant biliary mucinous cystadenomas of the liver
A Manouras, E Lagoudianakis, L Alevizos, H Markogiannakis, G Kafiri, C Bramis, K Filis, K Toutouzas
World Journal of Gastroenterology , 2008,
Abstract: Biliary cystadenomas of the liver are rare, cystic neoplasms of the biliary ductal system usually occur in middle aged women. We report a case of synchronous multiple huge biliary mucinous cystadenomas with unique features. This is, according to our knowledge, the first report in the literature about three synchronously occurring hepatobiliary cystadenomas. Cystadenomas have a strong tendency to recur, particularly following incomplete excision, and a potential of malignant transformation. A therapeutic re-evaluation may be necessary when the diagnosis of hepatobiliary cystadenoma is made after the operation and an open liver resection should be considered.
Complete abdominal aortic aneurysm thrombosis and obstruction of both common iliac arteries with intrathrombotic pressures demonstrating a continuing risk of rupture: a case report and review of the literature
Konstantinos A Filis, Emmanuel E Lagoudianakis, Haridimos Markogiannakis, Aikaterini Kotzadimitriou, Nikolaos Koronakis, Konstantinos Bramis, Konstantinos Xiromeritis, Dimitrios Theodorou, Andreas Manouras
Journal of Medical Case Reports , 2009, DOI: 10.1186/1752-1947-3-9292
Abstract: We report the case of a 56-year-old Caucasian man with an infrarenal abdominal aortic aneurysm, presenting at our hospital due to critical ischemia of his right lower limb. Computed tomography and angiography demonstrated complete aneurysm thrombosis and obstruction of both common iliac arteries.During the operation, systolic and mean intrathrombotic pressures, measured in different levels, constituted 74.5-90.2% and 77.5-92.5% of systolic and mean intraluminal pressure and 73-88.4% and 76.5-91.3% of systemic pressure, respectively. Our findings show that there may be a continuing risk of rupture in cases of a thrombosed abdominal aortic aneurysm.Although thrombus formation is common within an abdominal aortic aneurysm, there is still controversy over the role that aneurysmal mural thrombus plays in the risk of rupture. Complete thrombosis of an aneurysm is extremely rare and its role in abdominal aortic aneurysm rupture is still not clear. We report our findings regarding intrathrombotic pressures of a completely thrombosed infrarenal aneurysm and their implications for the risk of rupture.A 56-year-old Caucasian man with a known 5-year history of an infrarenal abdominal aortic aneurysm was admitted due to critical ischemia of his right lower limb. The patient's left leg had been amputated at the left common femoral artery level (very high femoral amputation) following a car accident 25 years previously. Abdominal computed tomography (CT) 8 months earlier showed a 4 cm infrarenal aneurysm and severe atherosclerosis of both common iliac arteries. Physical examination on admission revealed absent femoral pulses bilaterally with an ankle-brachial index (ABI) on the right of 0.50. A contrast-enhanced CT scan demonstrated complete aneurysm thrombosis extending from the aortic neck to both common, external and internal iliac arteries. Maximal aneurysm diameter was 4.3 cm (Figure 1). Digital subtraction angiography (DSA) confirmed complete aneurysm thrombosis and obstruct
Peroxidase, phenolics, and antioxidative capacity of common mullein (Verbascum thapsus L.) grown in a zinc excess
Morina Filis,Jovanovi? L.,Kukavica Biljana,Veljovi?-Jovanovi? Sonja
Archives of Biological Sciences , 2008, DOI: 10.2298/abs0804687m
Abstract: Common mullein (Verbascum thapsus L.) is the dominant plant species at a disposal site polluted with metal from the hydrometallurgical jarosite zinc production process. Seeds collected at the site were germinated and plants were grown hydroponically under controlled conditions in a excess of Zn. Induction of total soluble POD activity in the root occurred at 1, 5, and 10 mM Zn, indicating Zn accumulation within the root. Accumulation of Zn in leaves was not accompanied by changes in POD activity, but resulted in gradual increase of total antioxidative capacity, which could be partly attributed to accumulation of soluble phenolics. The role of the phenolics/POD system in defense of V. thapsus against zinc is discussed.
Effects of mixed saline and alkaline stress on the morphology and anatomy of Pisum sativum L.: The role of peroxidase and ascorbate oxidase in growth regulation
Kukavica Biljana,Morina Filis,Janji? Nina,Boroja Mirela
Archives of Biological Sciences , 2013, DOI: 10.2298/abs1301265k
Abstract: The effects of hyperalkaline, thermo-mineral water from Slatina on the morphology and anatomy of pea plants (Pisum sativum L.), were examined after eleven days of treatment with a mixture of tap water and Slatina water in 3:1 (T1) and 1:1 ratios (T2). Complete growth arrest of seedlings was observed in the Slatina water (T3). The alkalinity of external media was recovered to pH 8 within four days only in T1 and T2. Analysis of morphological parameters (the length of the main root, root application zone, number of lateral roots) indicated that the thermo-mineral water either promoted (T1) or inhibited (T2) the formation of lateral roots and plant growth. Comparative histological and anatomical analyses showed that inhibition of lateral roots was accompanied by an increase in the xylem and phloem. These changes in root morphology were accompanied by an increase in the activity of superoxide dismutase (SOD: E.C. 1.15.1.1) and peroxidase (POD: E.C 1.1.1.17) in the soluble fraction, whereas the activities of ascorbate oxidase (AAO: E.C. 1.10.3.3) bound to the cell wall and ionic POD decreased. The lower ratio of Slatina water in the hydroponic solution contributed to a more developed mesophyll with significantly higher AAO activity in the leaves and the induction of ionic POD isoforms. Besides alkalinity and excess NaCl, we suggest that a specific combination of metals (e.g. Ca and Mg) might be responsible for subtle changes in the cell area and xylem development, leading to dramatic changes in root anatomy.
Complete abdominal aortic aneurysm thrombosis and obstruction of both common iliac arteries with intrathrombotic pressures demonstrating a continuing risk of rupture: a case report and review of the literature
Filis Konstantinos,Lagoudianakis Emmanuel,Markogiannakis Haridimos,Kotzadimitriou Aikaterini
Journal of Medical Case Reports , 2009,
Abstract: Introduction Although mural thrombus in an abdominal aortic aneurysm is frequent and its role has been studied extensively, complete thrombosis of an abdominal aneurysm is extremely rare and its natural history in relation to the risk of rupture is not known. The case of a patient with a completely thrombosed infrarenal aneurysm is presented along with a literature review. Case presentation We report the case of a 56-year-old Caucasian man with an infrarenal abdominal aortic aneurysm, presenting at our hospital due to critical ischemia of his right lower limb. Computed tomography and angiography demonstrated complete aneurysm thrombosis and obstruction of both common iliac arteries. Conclusion During the operation, systolic and mean intrathrombotic pressures, measured in different levels, constituted 74.5-90.2% and 77.5-92.5% of systolic and mean intraluminal pressure and 73-88.4% and 76.5-91.3% of systemic pressure, respectively. Our findings show that there may be a continuing risk of rupture in cases of a thrombosed abdominal aortic aneurysm.
Pseudotumoral Hydatid Cyst: Report of a Case
Ioannis E. Petrakis,Evaggelia Grysbolaki,Stefanos Paraskakis,Theodore Lagoudis,Demetrios Filis,George Chalkiadakis
HPB Surgery , 2009, DOI: 10.1155/2009/137956
Abstract: Hydatidosis due to Echinococcus granulosus is an endemic parasitic zoonosis characterized by worldwide distribution particularly in Mediterranean countries. The most commonly involved anatomical locations are the liver and lung. Occasionally the cyst may progressively increase in size, mimicking gross ascites or intrabdominal tumor. Herein, are reported a case of a 40-year-old patient with a giant exophytically expanded hepatic echinococcus cyst, misdiagnosed as an abdominal malignancy during formal investigation. The patient was admitted to the hospital complaining for mild diffuse abdominal tenderness, moderate abdominal pain, nausea, diarrhoea, and vomiting. A CT scan revealed the presence of a giant abdominal mass 25×21×14 cm, resembling a tumor, adherent to the liver edges and parietal peritoneum, displacing intestinal loops. During the ensuing days the patient’s clinical condition worsened, and he became febrile. Exploratory laparotomy was performed, and an exophytically grown giant liver hydatid cyst was removed, despite the radiological findings and the preoperative clinical suspicion.
Right subclavian double steal syndrome: a case report
Konstantinos Filis, Levon Toufektzian, Frangiska Sigala, Dimitrios Kardoulas, Aikaterini Kotzadimitriou, Emmanuel Lagoudianakis, Nikolaos Koronakis, Andreas Manouras
Journal of Medical Case Reports , 2008, DOI: 10.1186/1752-1947-2-392
Abstract: We report on a 73-year-old male patient who presented at our hospital for the evaluation of dizziness and episodes of syncope. Angiography and color Doppler examinations documented the double syndrome as retrograde flow in the right vertebral artery and the right carotid artery.Constituting an indication for surgical correction, his condition was managed with the performance of carotid-carotid extra-anatomic bypass for the permanent reestablishment of antegrade blood flow in the vascular network supplying the brain. Carotid-carotid extra-anatomic bypass was a good option for our patient, since he remains symptom free after one year of follow up.Symptomatic atherosclerotic occlusive disease of the innominate artery is a relatively infrequent condition when compared with other manifestations of atherosclerosis causing flow-limiting effects and comprising less than 2% of all extracranial causes of cerebrovascular insufficiency [1]. Inflow obstruction of the right subclavian and common carotid arteries poses significant risks since right cerebral and right upper limb arterial blood supply depends on collateral networks which may not suffice in the presence of increased demand, promoting the appearance of neurologic deficits of varying degrees. Clinical presentation ranges from asymptomatic stenosis to more ominous forms of vascular compromise and subclavian steal syndrome manifesting with transient cerebral ischemia and ischemic arm symptoms. Although it was initially believed that the presence of subclavian stenotic or occlusive disease was associated with cerebral ischemia and neurologic deficits related to vertebrobasilar hypoperfusion, this opinion has been challenged and the prerequisite for the development of symptoms is the presence of disease in other extracranial vessels supplying the brain [2]. This observation is due to the relatively small contribution of the vertebral arteries to cerebral blood flow; a fact that has been demonstrated experimentally with no
Spontaneous Rectus Sheath Hematoma in the Elderly: An Unusual Case and Update on Proper Management
George Galyfos,Georgios Karantzikos,Konstantinos Palogos,Argiri Sianou,Konstantinos Filis,Nikolaos Kavouras
Case Reports in Emergency Medicine , 2014, DOI: 10.1155/2014/675678
Abstract: Spontaneous rectus sheath hematoma (SRSH) is an uncommon medical emergency in the elderly. We present a case of SRSH with an atypical clinical presentation and discuss literature regarding diagnosis and proper management. A 75-year-old female patient was transferred to the emergency department due to acute dyspnoea and confusion. Her medical history revealed a viral infection of the upper respiratory tract, and no coughing or use of anticoagulants. The clinical examination showed tenderness of the left lower abdomen, although palpation was misleading due to patient’s obesity. Laboratory investigations showed light anaemia. Ultrasonography and computed tomography revealed a large rectus sheath hematoma of the left abdominal wall. Despite further deterioration of the patient, conservative management including bed rest, fluid replacement, blood products transfusion, and proper analgesia was successful. No surgical intervention was needed. Prompt diagnosis and management of SRSH plays significant role in the prognosis, especially in elder patients. Independently of size and severity, conservative management remains the first therapeutic choice. Only by failure of supportive management, progressive and large hematoma or uncontrollable hemodynamic patients, interventional management including surgery or less invasive newer techniques is indicated. 1. Introduction Spontaneous rectus sheath hematoma (SRSH) is an uncommon entity [1]. The aging population and increased use of anticoagulant therapy without adequate control of coagulation parameters have caused a significant rise in the incidence of this condition in the last decades [2, 3]. SRSH is usually self-limiting but can evolve to a life-threatening emergency, especially for the elderly [2, 4]. This is mainly due to the low health status and various comorbidities that are observed in this group of patients, whereas delayed diagnosis plays a significant role as well. We present a case of an elder patient with SRSH and an unusual clinical presentation. We highlight the importance of prompt diagnosis and management of this medical emergency and include a review of the literature. 2. Case Report A 75-year-old woman was transferred to our emergency department due to sudden onset of dyspnoea and confusion. She reported nasal congestion, sneezing, and malaise during the last three days, indicating a possible viral infection. The patient reported no significant comorbidities except from arterial hypertension under therapy, no coughing, and no anticoagulant use. On examination, her temperature was 37.0°C, blood
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