Model studija u sintezi epotilona - alternativni pristup sintezi C1-C7 fragmenta

In this model study an alternative synthetic approach to the C1-C7 fragment of epothilones was investigated. Starting froth 4,4-dimethylcyclopentenone, a 7 step reaction sequence afforded the key intermediate 7 in 27%, overall yield. Surprisingly, the attempted deprotection of latent functionalities in 7 failed, indicating the incompatibility of the ethoxyethyl protective group with the reaction conditions employed.U okviru model studije ispitivan je alternativni sintetički pristup C1–C7 fragmentu molekula epotilona. Polazeći od 4,4-dimetilciklopentenona, ključni intermedijer 7 dobijen je u sedam faza, u ukupnom prinosu od 27 %. Deprotekciju latentnih funkcionalnih grupa u molekulu 7 nije bilo moguće izvršiti, zbog iznenađujuće labilnosti etoksietil zaštitne grupe u baznim reakcionim uslovima

The Magnetic Electron Ion Spectrometer (MagEIS) Instruments Aboard the Radiation Belt Storm Probes (RBSP) Spacecraft

This paper describes the Magnetic Electron Ion Spectrometer (MagEIS) instruments aboard the RBSP spacecraft from an instrumentation and engineering point of view. There are four magnetic spectrometers aboard each of the two spacecraft, one low-energy unit (20–240 keV), two medium-energy units (80–1200 keV), and a high-energy unit (800–4800 keV). The high unit also contains a proton telescope (55 keV–20 MeV). The magnetic spectrometers focus electrons within a selected energy pass band upon a focal plane of several silicon detectors where pulse-height analysis is used to determine if the energy of the incident electron is appropriate for the electron momentum selected by the magnet. Thus each event is a two-parameter analysis, an approach leading to a greatly reduced background. The physics of these instruments are described in detail followed by the engineering implementation. The data outputs are described, and examples of the calibration results and early flight data presented

Privredni ribolov na Dunavu u Srbiji

U radu se daje pregled slatkovodnog ribarstva sa aspekta upravljanja, ekspolatacije ribljih resursa, tržišta ribom, legislative koja uređuje delatnost ribarstva, kao i problemi sektora ribarstva u Srbiji. Istraživanje i analiza privrednog ribolova na Dunavu kroz Srbiju (588 km toka) sprovedeno je prikupljanjem podataka ribarske statistike za period od 1948. do 2010. godine, njihovim unošenjem u elektronsku bazu i analiziranjem uz korišćenje različitih metoda. Statistički podaci uključuju ukupan ulov, ulov rekreativnog i privrednog ribolova, ulov privredno značajnih vrsta i alohtonih vrsta. Korišćenjem anketnog upitnika za ribare dobijeni su podaci o demografskoj strukturi ribara koji se bave ribarenjem kao osnovnom delatnošću, o sastavu ulova, koliko je ribarstvo perspektivna privredna grana i koji su problemi i potencijalna rešenja. Većina ribara pripada starosnoj grupi koja je u opsegu od 45 do 50 godina. Privredni ribolov je važna ekonomska delatnost i predstavlja osnovni izvor prihoda za većinu ribara. Tržište slatkovodnom ribom je neuređena oblast koja zavisi od ličnog zalaganja i odgovornosti pojedinca koji ima interes u prodaji ribe. Ribarstvo na Dunavu u Srbiji je već dugi niz godina u procesu tranzicije ka tržišnoj ekonomiji. Dugoročne fluktuacije hidroloških podataka (vodostaj) upoređivane su sa fluktuacijama godišnjeg ulova ribe iz Dunava kako bi se uočila eventualna međusobna zavisnost i uporedili njihovi trendovi. Rezultati ovog istraživanja treba da posluže kao pregled stanja sektora sa svim postojećim nedostacima koje treba ispraviti u cilju što uspešnijeg upravljanja ribarstvom na Dunavu i ostalim rekama u Srbiji gde je zastupljen privredni ribolov

Prevalence and correlates of depressive disorders in people with Type 2 diabetes: results from the International Prevalence and Treatment of Diabetes and Depression (INTERPRET‐DD) study, a collaborative study carried out in 14 countries

Aims To assess the prevalence and management of depressive disorders in people with Type 2 diabetes in different countries. Methods People with diabetes aged 18–65 years and treated in outpatient settings were recruited in 14 countries and underwent a psychiatric interview. Participants completed the Patient Health Questionnaire and the Problem Areas in Diabetes scale. Demographic and medical record data were collected. Results A total of 2783 people with Type 2 diabetes (45.3% men, mean duration of diabetes 8.8 years) participated. Overall, 10.6% were diagnosed with current major depressive disorder and 17.0% reported moderate to severe levels of depressive symptomatology (Patient Health Questionnaire scores >9). Multivariable analyses showed that, after controlling for country, current major depressive disorder was significantly associated with gender (women) (PPPPP<0.0001). The proportion of those with either current major depressive disorder or moderate to severe levels of depressive symptomatology who had a diagnosis or any treatment for their depression recorded in their medical records was extremely low and non-existent in many countries (0–29.6%). Conclusions Our international study, the largest of this type ever undertaken, shows that people with diabetes frequently have depressive disorders and also significant levels of depressive symptoms. Our findings indicate that the identification and appropriate care for psychological and psychiatric problems is not the norm and suggest a lack of the comprehensive approach to diabetes management that is needed to improve clinical outcomes

Omics analysis of educated platelets in cancer and benign disease of the pancreas

Pancreatic ductal adenocarcinoma (PDAC) is traditionally associated with thrombocy-tosis/hypercoagulation and novel insights on platelet-PDAC “dangerous liaisons” are warranted. Here we performed an integrative omics study investigating the biological processes of mRNAs and expressed miRNAs, as well as proteins in PDAC blood platelets, using benign disease as a refer-ence for inflammatory noise. Gene ontology mining revealed enrichment of RNA splicing, mRNA processing and translation initiation in miRNAs and proteins but depletion in RNA transcripts. Remarkably, correlation analyses revealed a negative regulation on SPARC transcription by isomiRs involved in cancer signaling, suggesting a specific ”education” in PDAC platelets. Platelets of benign patients were enriched for non-templated additions of G nucleotides (#ntaG) miRNAs, while PDAC presented length variation on 3′ (lv3p) as the most frequent modification on miRNAs. Additionally, we provided an actionable repertoire of PDAC and benign platelet-ome to be exploited for future studies. In conclusion, our data show that platelets change their biological repertoire in patients with PDAC, through dysregulation of miRNAs and splicing factors, supporting the presence of de novo protein machinery that can “educate” the platelet. These novel findings could be further exploited for innovative liquid biopsies platforms as well as possible therapeutic targets

Carcinomi associati al papillomavirus umano: conoscenze, ruolo e attitudini dei medici otorinolaringoiatri in tema di prevenzione

L’infezione da papillomavirus umano (HPV), in particolare HPV 16, è un riconosciuto fattore causale delle neoplasie orofaringee. L’incidenza delle neoplasie orofaringee è in aumento in diversi paesi europei, inclusa l’Italia, e negli Stai Uniti dove accurati modelli matematici hanno stimato che supererà quella del cancro alla cervice nella prossima decade. Recenti evidenze scientifiche supportano la potenziale efficacia del vaccino anti-HPV nel controllare quella che è stata definita “l’epidemia di neoplasie HPV-correlate”. In questo contesto, i medici otorinolaringoiatri assumono un ruolo cruciale, non solo nella diagnosi e trattamento di questa patologia, ma anche – come è stato sottolineato dall’American Head and Neck Society – nella prevenzione. Abbiamo condotto un’indagine sulle conoscenze e le attitudini dei medici otorinolaringoiatri italiani in tema di infezione HPV, patologie correlate e prevenzione vaccinale. Si tratta della prima indagine conoscitiva in Italia e in Europa sull’argomento. 262 medici otorinolaringoiatri italiani sono stati reclutati durante il 101° Congresso Nazionale della Società Italiana di Otorinolaringoiatria e Chirurgia Cervico-Facciale, tenutosi in maggio 2014. È stato utilizzato un questionario semi-strutturato sviluppato sulla base delle evidenze disponibili in letteratura e del parere di esperti. Le conoscenze e le attitudini sono state descritte e valutate con tecniche di analisi univariata. È stato inoltre costruito uno score composito di conoscenza. I dati dimostrano come i medici otorinolaringoiatri italiani abbiano, in media, un grado di conoscenza buono dell’infezione HPV e un’attitudine positiva nei confronti della prevenzione, in particolare della vaccinazione. I nostri risultati possono essere una utile base per pianificare, implementare e valutare programmi di educazione continua specifici sul tema della prevenzione dell’infezione da HPV. Come dimostriamo nel nostro studio, programmi di educazione continua specifici sono efficaci nell’aumentare il grado di conoscenza dei medici e l’attitudine positiva nei confronti dei programmi di prevenzione; il che contribuisce a promuovere l’adesione alla vaccinazione nei pazienti e nella popolazione generale. Con l’obiettivo generale di controllare l’epidemia di neoplasie HPV-correlate, maggiori risorse ed energie devono essere dedicate alla formazione e alla diffusione della cultura della prevenzione tra i medici otorinolaringoiatri e la comunità medica in generale. In questo contesto, identifichiamo grande potenziale nella collaborazione tra le comunità e le società scientifiche dell’otorinolaringoiatria e la sanità pubblica

Management approaches and aquaculture of sturgeons in the Lower Danube region countries

Summary This paper presents the status and trends in management of sturgeon species and the development of sturgeon aquaculture in the Lower Danube countries: Romania, Bulgaria, Serbia, Ukraine and Moldova. Sturgeon fishery moratoria and aquaculture development represent first steps in the Lower Danube countries to combat extirpation. Supportive stocking was used as a compensation for the impact of sturgeon fishery and dam construction, but these efforts unfortunately lacked adequate cooperation and coordination between and among region countries. Unsolved problems remain, such as the presence of illegal sturgeon fishery, water pollution, habitat destruction and fragmentation. Construction of fish passes and habitat restoration project developments are two key issues that have yet to be tackled in the Lower Danube region

Relation of the Mediterranean diet with the incidence of gestational diabetes

Background/objectives: Some studies document relationships of the incidence of gestational diabetes mellitus (GDM) with individual components of the diet, but studies exploring relationships with patterns of eating are lacking. This observational study aimed to explore a possible relationship between the incidence of GDM and the Mediterranean diet (MedDiet) pattern of eating. Subjects/methods: In 10 Mediterranean countries, 1076 consecutive pregnant women underwent a 75-g OGTT at the 24th-32nd week of gestation, interpreted both by the ADA-2010 and the International Association of the Diabetes and Pregnancy Study Groups (IADPSG)-2012 criteria. The dietary habits were assessed by a previously validated questionnaire and a Mediterranean Diet Index (MDI) was computed, reflecting the degree of adherence to the MedDiet pattern of eating: a higher MDI denoting better adherence. Results: After adjustment for age, BMI, diabetes in the family, weight gain and energy intake, subjects with GDM, by either criterion, had lower MDI (ADA-2010, 5. 8 vs 6. 3, P=0. 028; IADPSG-2012, 5. 9 vs 6. 4, P<0. 001). Moreover, the incidence of GDM was lower in subjects with better adherence to the MedDiet (higher tertile of MDI distribution), 8. 0% vs 12. 3%, OR=0. 618, P=0. 030 by ADA-2010 and 24. 3% vs 32. 8%, OR=0. 655, P=0. 004 by IADPSG-2012 criteria. In subjects without GDM, MDI was negatively correlated with both fasting plasma glucose and AUC glucose, P<0. 001 for both. Conclusions: Adherence to a MedDiet pattern of eating is associated with lower incidence of GDM and better degree of glucose tolerance, even in women without GDM. The possibility to use MedDiet for the prevention of GDM deserves further testing with intervention studies.peer-reviewe

More anxious than depressed: prevalence and correlates in a 15-nation study of anxiety disorders in people with type 2 diabetes mellitus

Background Anxiety disorder, one of the highly disabling, prevalent and common mental disorders, is known to be more prevalent in persons with type 2 diabetes mellitus (T2DM) than the general population, and the comorbid presence of anxiety disorders is known to have an impact on the diabetes outcome and the quality of life. However, the information on the type of anxiety disorder and its prevalence in persons with T2DM is limited. Aims To assess the prevalence and correlates of anxiety disorder in people with type 2 diabetes in different countries. Methods People aged 18–65 years with diabetes and treated in outpatient settings were recruited in 15 countries and underwent a psychiatric interview with the Mini-International Neuropsychiatric Interview. Demographic and medical record data were collected. Results A total of 3170 people with type 2 diabetes (56.2% women; with mean (SD) duration of diabetes 10.01 (7.0) years) participated. The overall prevalence of anxiety disorders in type 2 diabetic persons was 18%; however, 2.8% of the study population had more than one type of anxiety disorder. The most prevalent anxiety disorders were generalised anxiety disorder (8.1%) and panic disorder (5.1%). Female gender, presence of diabetic complications, longer duration of diabetes and poorer glycaemic control (HbA1c levels) were significantly associated with comorbid anxiety disorder. A higher prevalence of anxiety disorders was observed in Ukraine, Saudi Arabia and Argentina with a lower prevalence in Bangladesh and India. Conclusions Our international study shows that people with type 2 diabetes have a high prevalence of anxiety disorders, especially women, those with diabetic complications, those with a longer duration of diabetes and poorer glycaemic control. Early identification and appropriate timely care of psychiatric problems of people with type 2 diabetes is warranted

Factors associated with the onset of major depressive disorder in adults with type 2 diabetes living in 12 different countries; results from the INTERPRET-DD prospective study

Aims To examine the factors that associated with changes in depression in people with type 2 diabetes living in 12 different countries. Methods People with type 2 diabetes treated in out-patient settings aged 18-65 years underwent a psychiatric assessment to diagnose Major Depressive Disorder (MDD) at baseline and follow-up. At both time points participants completed the Patient Health Questionnaire (PHQ-9), the WHO 5-item Well-being scale (WHO-5) and the Problem Areas in Diabetes (PAID) scale which measures diabetes-related distress. A composite stress score (CSS) (the occurrence of stressful life events and their reported degree of 'upset') between baseline and follow-up was calculated. Demographic data and medical record information were collected. Separate regression analyses were conducted with MDD and PHQ-9 scores as the dependent variables. Results In total there were 7.4% (120) incident cases of MDD with 81.5% (1317) continuing to remain free of a diagnosis of MDD. Univariate analyses demonstrated that those with MDD were more likely to be female, less likely to be physically active, more likely to have diabetes complications at baseline and have higher CSS. Mean scores for the WHO-5, PAID and PHQ-9 were poorer in those with incident MDD compared with those who had never had a diagnosis of MDD. Regression analyses demonstrated that higher PHQ-9, lower WHO-5 scores and greater CSS were significant predictors of incident MDD. Significant predictors of PHQ-9 were baseline PHQ-9 score, WHO-5, PAID and CSS. Conclusion This study demonstrates the importance of psychosocial factors in addition to physiological variables in the development of depressive symptoms and incident MDD in people with type 2 diabetes. Stressful life events, depressive symptoms and diabetes-related distress all play a significant role which has implications for practice. A more holistic approach to care, which recognises the interplay of these psychosocial factors may help to mitigate their impact on diabetes self-management as well as MDD, thus early screening and treatment for symptoms is recommended