Wpływ przeładowania żelazem na występowanie endokrynopatii u chorych na beta-talasemię major i intermedia

Introduction: Iron overload is a major problem in patients with b-thalassemia major, and it has many structural and metabolic consequences. In this study, we aimed to consider the prevalence of endocrine abnormalities in patients with β-thalassemia major and thalassemia intermedia. Materials and methods: We ordered following tests for consideration endocrine abnormalities: fasting plasma glucose, oral glucose tolerance, iron, total iron binding capacity, ferritin, thyroid-stimulating hormone (TSH), free thyroxin (fT4), free triiodothyronine (fT3), parathyroid hormone levels. Results: According to our study including 70 patients with thalassemia major, 7 (10%) had diabetes, 5 (7.1%) had impaired glucose tolerance, 9 (12.8%) had hypothyroidism, 2 (2.8%) had hypoparathyroidism, 2 (2.8%) had hyperparathyroidism. Of 22 patients with thalassemia intermedia, 1 (4.5%) had diabetes. Conclusions: These findings reinforce the importance of regular follow-up of patients with b-thalassemia major and thalassemia intermedia for early detection and management of associated complications. In this way, the prevalence of endocrine abnormalities can be decreased in future.Wstęp: Przeładowanie żelazem jest częstym problemem u osób chorujących na beta-talasemię major, związanym z wieloma strukturalnymi i metabolicznymi następstwami. Niniejsze badanie przeprowadzono w celu oceny częstości zaburzeń metabolicznych u pacjentów z β-talasemią major i intermedia. Materiały i metody: Przeprowadzono następujące badania pozwalające ocenić zaburzenia gospodarki hormonalnej: glikemia na czczo, doustny test tolerancji glukozy, stężenie żelaza, całkowita zdolność wiązania żelaza, stężenia ferrytyny, tyreotropiny (TSH), wolnej tyroksyny (fT4), wolnej trijodotyroniny (fT3) i parathormonu. Wyniki: Spośród 70 chorych z talasemią major włączonych do niniejszego badania u 7 (10%) osób stwierdzono cukrzycę, u 5 (7,1%) nieprawidłową tolerancję glukozy, u 9 (12,8%) niedoczynność tarczycy, a u 2 (2,8%) nadczynność tarczycy. W grupie 22 chorych z talasemią intermedia 1 (4,5%) osoba chorowała na cukrzycę. Wnioski: Uzyskane wyniki potwierdzają znaczenie regularnych badań u chorych na beta-talasemię major i intermedia, co umożliwia wczesne wykrycie i rozpoczęcie leczenia związanych z tą chorobą powikłań. Takie postępowanie może się przyczynić do zmniejszenia częstości zaburzeń hormonalnych w przyszłości

Transnational Labour Solidarity and Social Movement Unionism: Insights from and beyond a Women Workers' Strike in Turkey

Cataloged from PDF version of article.Through an analysis of solidarity across borders and social groups in connection with and beyond a strike on the part primarily of women workers at a foreignowned factory in Turkey’s Antalya Free Zone, this article contributes to the debate on the two union renewal strategies of transnational labour solidarity and coalition building with social movements. In the case at hand, the extensive strike-related support on the part of external unions and the women’s movement illustrates the positive difference that solidarity practices can make. However, looking beyond the strike itself, the case points to significant challenges related to the development of deeper and more proactive solidarity across borders and social groups

Implementation of a simplified method for actuation of ferrofluids

This paper was presented at the 3rd Micro and Nano Flows Conference (MNF2011), which was held at the Makedonia Palace Hotel, Thessaloniki in Greece. The conference was organised by Brunel University and supported by the Italian Union of Thermofluiddynamics, Aristotle University of Thessaloniki, University of Thessaly, IPEM, the Process Intensification Network, the Institution of Mechanical Engineers, the Heat Transfer Society, HEXAG - the Heat Exchange Action Group, and the Energy Institute.Magnetic actuation of ferrofluids is an emergent field that will open up new possibilities in various fields of engineering. The quality and topology of the magnetic field that is being utilized in such systems is determinant in terms of flow properties, flow rates and overall efficiency. Determining the optimal magnetic field topology to achieve the desired results, and determining the methods by which these magnetic fields are to be generated are central problems of obtaining the desired flow. A healthy comparison of various magnetic field topologies requires a varied set of examples from the most simplified to most sophisticated. Such comparisons are necessary to have a well grounded starting point. This study focuses on a particular pump design that employs a simplified magnetic field topology to obtain ferrofluid flow. The results of this paper such as flow and pressure difference are intended to form a baseline for future reference.Sabancı University Internal Research Grant, no: IACF09-0064

Gender policy: A case of instrumental Europeanization?

[No abstract available

Corticosterone Regulates Both Naturally Occurring and Cocaine‐Induced Dopamine Signaling by Selectively Decreasing Dopamine Uptake

Stressful and aversive events promote maladaptive reward‐seeking behaviors such as drug addiction by acting, in part, on the mesolimbic dopamine system. Using animal models, data from our laboratory and others show that stress and cocaine can interact to produce a synergistic effect on reward circuitry. This effect is also observed when the stress hormone corticosterone is administered directly into the nucleus accumbens (NAc), indicating that glucocorticoids act locally in dopamine terminal regions to enhance cocaine\u27s effects on dopamine signaling. However, prior studies in behaving animals have not provided mechanistic insight. Using fast‐scan cyclic voltammetry, we examined the effect of systemic corticosterone on spontaneous dopamine release events (transients) in the NAc core and shell in behaving rats. A physiologically relevant systemic injection of corticosterone (2 mg/kg i.p.) induced an increase in dopamine transient amplitude and duration (both voltammetric measures sensitive to decreases in dopamine clearance), but had no effect on the frequency of transient release events. This effect was compounded by cocaine (2.5 mg/kg i.p.). However, a second experiment indicated that the same injection of corticosterone had no detectable effect on the dopaminergic encoding of a palatable natural reward (saccharin). Taken together, these results suggest that corticosterone interferes with naturally occurring dopamine uptake locally, and this effect is a critical determinant of dopamine concentration specifically in situations in which the dopamine transporter is pharmacologically blocked by cocaine

Assessment of the State of the Art of Integrated Vehicle Health Management Technologies as Applicable to Damage Conditions

A survey of literature from academia, industry, and other Government agencies assessed the state of the art in current integrated vehicle health management (IVHM) aircraft technologies. These are the technologies that are used for assessing vehicle health at the system and subsystem level. This study reports on how these technologies are employed by major military and commercial platforms for detection, diagnosis, prognosis, and mitigation. Over 200 papers from five conferences from the time period of 2004 to 2009 were reviewed. Over 30 of these IVHM technologies are then mapped into the 17 different adverse event damage conditions identified in a previous study. This study illustrates existing gaps and opportunities for additional research by the NASA IVHM Project

Commercial Aircraft Integrated Vehicle Health Management Study

Statistical data and literature from academia, industry, and other government agencies were reviewed and analyzed to establish requirements for fixture work in detection, diagnosis, prognosis, and mitigation for IVHM related hardware and software. Around 15 to 20 percent of commercial aircraft accidents between 1988 and 2003 involved inalftfnctions or failures of some aircraft system or component. Engine and landing gear failures/malfunctions dominate both accidents and incidents. The IVI vl Project research technologies were found to map to the Joint Planning and Development Office's National Research and Development Plan (RDP) as well as the Safety Working Group's National Aviation Safety Strategic. Plan (NASSP). Future directions in Aviation Technology as related to IVHlvl were identified by reviewing papers from three conferences across a five year time span. A total of twenty-one trend groups in propulsion, aeronautics and aircraft categories were compiled. Current and ftiture directions of IVHM related technologies were gathered and classified according to eight categories: measurement and inspection, sensors, sensor management, detection, component and subsystem monitoring, diagnosis, prognosis, and mitigation

Corticosterone Potentiation of Cocaine-Induced Reinstatement of Conditioned Place Preference in Mice is Mediated by Blockade of the Organic Cation Transporter 3

The mechanisms by which stressful life events increase the risk of relapse in recovering cocaine addicts are not well understood. We previously reported that stress, via elevated corticosterone, potentiates cocaine-primed reinstatement of cocaine seeking following self-administration in rats and that this potentiation appears to involve corticosterone-induced blockade of dopamine clearance via the organic cation transporter 3 (OCT3). In the present study, we use a conditioned place preference/reinstatement paradigm in mice to directly test the hypothesis that corticosterone potentiates cocaine-primed reinstatement by blockade of OCT3. Consistent with our findings following self-administration in rats, pretreatment of male C57/BL6 mice with corticosterone (using a dose that reproduced stress-level plasma concentrations) potentiated cocaine-primed reinstatement of extinguished cocaine-induced conditioned place preference. Corticosterone failed to re-establish extinguished preference alone but produced a leftward shift in the dose–response curve for cocaine-primed reinstatement. A similar potentiating effect was observed upon pretreatment of mice with the non-glucocorticoid OCT3 blocker, normetanephrine. To determine the role of OCT3 blockade in these effects, we examined the abilities of corticosterone and normetanephrine to potentiate cocaine-primed reinstatement in OCT3-deficient and wild-type mice. Conditioned place preference, extinction and reinstatement of extinguished preference in response to low-dose cocaine administration did not differ between genotypes. However, corticosterone and normetanephrine failed to potentiate cocaine-primed reinstatement in OCT3-deficient mice. Together, these data provide the first direct evidence that the interaction of corticosterone with OCT3 mediates corticosterone effects on drug-seeking behavior and establish OCT3 function as an important determinant of susceptibility to cocaine use

Is there a relationship between weather conditions and aortic dissection?

BACKGROUND: Bleeding and rupture of blood vessels has been correlated with weather conditions in the past. This is the first study in the world literature with the aim of investigating the relationship between atmospheric pressure and temperature with the presentation of aortic dissection. METHODS: The dates of all emergency aortic dissection repairs from 1996–2002 in a regional cardiothoracic unit at Blackpool Victoria Hospital were obtained. Hourly temperature and pressure data from a regional weather station for this time period was supplied by the Meteorological Office. The mean and standard deviation of hourly temperature and pressure data for that month were compared to the mean and standard deviation of the data 24 and 48 hours prior to the aortic dissection. RESULTS: 26 patients were found to have been operated on during the time period studied. There was no statistically significant correlation between temperature or atmospheric pressure readings, and the incidence of aortic dissection, using a Bonferonni-corrected significance p-value of 0.005 CONCLUSION: This study is the first to examine the relationship between atmospheric pressure, temperature and dissecting thoracic aorta. No statistically significant relationship was demonstrable