FSH prevents depletion of the resting follicle pool by promoting follicular number and morphology in fresh and cryopreserved primate ovarian tissues following xenografting

Background: Cryopreservation and transplantation of ovarian tissue is one option for re-establishing ovarian function, but optimal conditions for graft sustainment and follicular survival are still considered experimental. The present study aims to analyze the effect of FSH treatment on the resting follicle pool in fresh and cryopreserved primate ovarian tissues following xenografting. Methods: Ovarian tissues from adult marmosets were grafted freshly or following cryopreservation to ovarectomized nude mice treated with FSH 25 IU twice daily post transplantation or left untreated as controls. Grafts were retrieved 2 or 4 weeks after transplantation to evaluate the number and morphological appearance of follicles. Results: Early start of FSH treatment within 1 week following transplantation partly prevents primordial follicle loss in fresh and frozen-thawed tissues, whereas after a 3 weeks time interval this effect is present only in fresh tissues. A similar positive effect of early, but not later FSH treatment on primary follicles is seen in fresh tissues compared to only marginal effects in frozen-thawed tissues. The percentage of morphologically normal follicles is generally increased in FSH treated tissues, whereas the percentage of primary follicles over all primordial and primary follicles is increased by FSH only in freshly-grafted tissues. Conclusions: FSH treatment alleviates depletion of the resting follicle pool and promotes normal follicular morphology both in freshly and frozen-thawed grafted tissues. In previously cryopreserved tissues, applying to most of the tissues intended for clinical use in fertility preservation attempts, its positive effect on primordial follicle numbers and potential graft sustainment is dependent on an early start of treatment within one week of transplantation

Moderate hyperventilation during intravenous anesthesia increases net cerebral lactate efflux

BACKGROUND:: Hyperventilation is known to decrease cerebral blood flow (CBF) and to impair cerebral metabolism, but the threshold in patients undergoing intravenous anesthesia is unknown. The authors hypothesized that reduced CBF associated with moderate hyperventilation might impair cerebral aerobic metabolism in patients undergoing intravenous anesthesia. METHODS:: Thirty male patients scheduled for coronary surgery were included in a prospective, controlled crossover trial. Measurements were performed under fentanyl-midazolam anesthesia in a randomized sequence aiming at partial pressures of carbon dioxide of 30 and 50 mmHg. Endpoints were CBF, blood flow velocity in the middle cerebral artery, and cerebral metabolic rates for oxygen, glucose, and lactate. Global CBF was measured using a modified Kety-Schmidt technique with argon as inert gas tracer. CBF velocity of the middle cerebral artery was recorded by transcranial Doppler sonography. Data were presented as mean (SD). Two-sided paired t tests and one-way ANOVA for repeated measures were used for statistical analysis. RESULTS:: Moderate hyperventilation significantly decreased CBF by 60%, blood flow velocity by 41%, cerebral oxygen delivery by 58%, and partial pressure of oxygen of the jugular venous bulb by 45%. Cerebral metabolic rates for oxygen and glucose remained unchanged; however, net cerebral lactate efflux significantly increased from -0.38 (2.18) to -2.41(2.43) μmol min 100 g. CONCLUSIONS:: Moderate hyperventilation, when compared with moderate hypoventilation, in patients with cardiovascular disease undergoing intravenous anesthesia increased net cerebral lactate efflux and markedly reduced CBF and partial pressure of oxygen of the jugular venous bulb, suggesting partial impairment of cerebral aerobic metabolism at clinically relevant levels of hypocapnia. Copyrigh

FSH prevents depletion of the resting follicle pool by promoting follicular number and morphology in fresh and cryopreserved primate ovarian tissues following xenografting

Background: Cryopreservation and transplantation of ovarian tissue is one option for re-establishing ovarian function, but optimal conditions for graft sustainment and follicular survival are still considered experimental. The present study aims to analyze the effect of FSH treatment on the resting follicle pool in fresh and cryopreserved primate ovarian tissues following xenografting. Methods: Ovarian tissues from adult marmosets were grafted freshly or following cryopreservation to ovarectomized nude mice treated with FSH 25 IU twice daily post transplantation or left untreated as controls. Grafts were retrieved 2 or 4 weeks after transplantation to evaluate the number and morphological appearance of follicles. Results: Early start of FSH treatment within 1 week following transplantation partly prevents primordial follicle loss in fresh and frozen-thawed tissues, whereas after a 3 weeks time interval this effect is present only in fresh tissues. A similar positive effect of early, but not later FSH treatment on primary follicles is seen in fresh tissues compared to only marginal effects in frozen-thawed tissues. The percentage of morphologically normal follicles is generally increased in FSH treated tissues, whereas the percentage of primary follicles over all primordial and primary follicles is increased by FSH only in freshly-grafted tissues. Conclusions: FSH treatment alleviates depletion of the resting follicle pool and promotes normal follicular morphology both in freshly and frozen-thawed grafted tissues. In previously cryopreserved tissues, applying to most of the tissues intended for clinical use in fertility preservation attempts, its positive effect on primordial follicle numbers and potential graft sustainment is dependent on an early start of treatment within one week of transplantation

Tabakentwöhnungsmaßnahmen in der allgemeinärztlichen Versorgung: Implementierung, Effektivität und Wege einer optimierten Allokation

Hintergrund / Ziel der Studie: Im Bereich der Tabakentwöhnung existieren mittlerweile zahlreiche erprobte therapeutische Maßnahmen und Medikamente. Dennoch ist die Inanspruchnahme vorhandener Entwöhnungsangebote sehr dürftig. Es besteht die begründete Hoffnung, dass durch eine stärkere Einbeziehung der Hausärzte in den Bereich der Tabakentwöhnung eine Versorgungslücke geschlossen werden könnte. Die Studie soll Durchführbarkeit und Erfolg einer solchen Ausweitung des Anbieterkreises von Tabakentwöhnungsmaßnahmen im Hausarztbereich untersuchen. Unterschiedliche bereits vorhandene Therapieansätze werden hierbei hinsichtlich Effektivität und Effizienz in der allgemeinärztlichen Routineversorgung miteinander verglichen. Methoden: In Phase I der Studie werden bundesweit Patienten in mehr als 800 Arztpraxen an einem Stichtag per Fragebogen zu ihrer Gesundheit und ihrem Rauchverhalten befragt. In Phase II werden die in Phase I identifizierten entwöhnungswilligen Raucher in ausgewählten Arztpraxen für die Intervention rekrutiert und randomisiert vier Gruppen mit (idealerweise) jeweils 250 Personen zugeteilt: einer Bupropion SR (Zyban®)-Gruppe, einer Nikotinersatzmittel-Gruppe, einer Verhaltenstherapie-Gruppe und einer Kontrollgruppe. Die Behandlung erfolgt jeweils durch die Ärzte in ihren Praxen unter Supervision und mit Unterstützung durch Studienmonitore. Erwartete Ergebnisse: In Abhängigkeit von Merkmalen des Arztes und seiner Praxis auf der einen Seite sowie Merkmalen der betroffenen Patienten auf der anderen, sollte die Akzeptanz, Durchführbarkeit und Wirksamkeit der ausgewählten Therapieansätze unterschiedlich ausfallen. Insgesamt sollte jedoch jede Therapiebedingung gegenüber der Kontrollbedingung hinsichtlich ihrer Effektivität überlegen sein. Im 6-Monats Follow-up sollte die Zyban-Gruppe gegenüber allen anderen Gruppen die höchste Abstinenzquote aufweisen. Schlussfolgerung: Die Ergebnisse sollten Hinweise auf Möglichkeiten einer bedarfsgerechten, optimierten Allokation vorhandener Maßnahmen zur Tabakentwöhnung in der allgemeinärztlichen Versorgung liefern.Background / aim of the study: Although a number of efficacious smoking cessation measures and medications do exist, only a small number of smokers (tobacco users) make use of them. A stronger engagement of general practitioners (GPs) in the field of smoking cessation might help to improve health care in this important area. The study will investigate feasibility and effectiveness of different readily available smoking cessation measures under routine conditions in primary health care practices. Method: In phase I of the study patients' health status and tobacco consumption are assessed by means of questionnaires provided on a nationwide appointed date in more than 800 general practices in Germany. In phase II selected practices offer smoking cessation treatments to identified smokers. Participants recruited will be randomly assigned to four groups ideally consisting of 250 subjects each: A bupropion SR (Zyban©) condition, a nicotine replacement therapy (NRT) group, a cognitive-behavioural treatment (CBT) group and a control condition. Treatments will be conducted by GPs in their practices under supervision of study monitors offering therapeutical and organisational support. Expected results: Acceptance, feasibility, and effectiveness of smoking cessation treatments offered will differ depending on GP and patient characteristics. Overall, success-rates (while success is primarily defined as abstinence from tobacco use) should be higher in all therapeutic conditions as compared to controls. In the 6-month follow-up abstinence rates are expected to be highest in the bupropion SR group. Conclusion: Results should yield indications for an improved allocation of available smoking cessation measures in primary care

Revised Recommendations and Next Steps for Prior Learning Assessment in the University of Maine System

The University of Maine System (UMS) Prior Learning Assessment (PLA) Task Force makes the following slightly revised recommendations to the University of Maine System Credit Transfer Project Steering Committee and the University of Maine System Chief Academic Officers. The Recommendations and Next Steps below form a protocol that the UMS PLA Task Force recommends piloting for a period of four years, at which time the participating institutions will review their efficacy

Energy Estimation of Cosmic Rays with the Engineering Radio Array of the Pierre Auger Observatory

The Auger Engineering Radio Array (AERA) is part of the Pierre Auger Observatory and is used to detect the radio emission of cosmic-ray air showers. These observations are compared to the data of the surface detector stations of the Observatory, which provide well-calibrated information on the cosmic-ray energies and arrival directions. The response of the radio stations in the 30 to 80 MHz regime has been thoroughly calibrated to enable the reconstruction of the incoming electric field. For the latter, the energy deposit per area is determined from the radio pulses at each observer position and is interpolated using a two-dimensional function that takes into account signal asymmetries due to interference between the geomagnetic and charge-excess emission components. The spatial integral over the signal distribution gives a direct measurement of the energy transferred from the primary cosmic ray into radio emission in the AERA frequency range. We measure 15.8 MeV of radiation energy for a 1 EeV air shower arriving perpendicularly to the geomagnetic field. This radiation energy -- corrected for geometrical effects -- is used as a cosmic-ray energy estimator. Performing an absolute energy calibration against the surface-detector information, we observe that this radio-energy estimator scales quadratically with the cosmic-ray energy as expected for coherent emission. We find an energy resolution of the radio reconstruction of 22% for the data set and 17% for a high-quality subset containing only events with at least five radio stations with signal.Comment: Replaced with published version. Added journal reference and DO

Measurement of the Radiation Energy in the Radio Signal of Extensive Air Showers as a Universal Estimator of Cosmic-Ray Energy

We measure the energy emitted by extensive air showers in the form of radio emission in the frequency range from 30 to 80 MHz. Exploiting the accurate energy scale of the Pierre Auger Observatory, we obtain a radiation energy of 15.8 \pm 0.7 (stat) \pm 6.7 (sys) MeV for cosmic rays with an energy of 1 EeV arriving perpendicularly to a geomagnetic field of 0.24 G, scaling quadratically with the cosmic-ray energy. A comparison with predictions from state-of-the-art first-principle calculations shows agreement with our measurement. The radiation energy provides direct access to the calorimetric energy in the electromagnetic cascade of extensive air showers. Comparison with our result thus allows the direct calibration of any cosmic-ray radio detector against the well-established energy scale of the Pierre Auger Observatory.Comment: Replaced with published version. Added journal reference and DOI. Supplemental material in the ancillary file

Measuring Behavior in the Home Cage : Study Design, Applications, Challenges, and Perspectives

FUNDING This research was supported by NIH grants R00AG056662, P20GM125528, AG057424 to WS and SLPeer reviewedPublisher PD

ARTEFACTS: How do we want to deal with the future of our one and only planet?

The European Commission’s Science and Knowledge Service, the Joint Research Centre (JRC), decided to try working hand-in-hand with leading European science centres and museums. Behind this decision was the idea that the JRC could better support EU Institutions in engaging with the European public. The fact that European Union policies are firmly based on scientific evidence is a strong message which the JRC is uniquely able to illustrate. Such a collaboration would not only provide a platform to explain the benefits of EU policies to our daily lives but also provide an opportunity for European citizens to engage by taking a more active part in the EU policy making process for the future. A PILOT PROGRAMME To test the idea, the JRC launched an experimental programme to work with science museums: a perfect partner for three compelling reasons. Firstly, they attract a large and growing number of visitors. Leading science museums in Europe have typically 500 000 visitors per year. Furthermore, they are based in large European cities and attract local visitors as well as tourists from across Europe and beyond. The second reason for working with museums is that they have mastered the art of how to communicate key elements of sophisticated arguments across to the public and making complex topics of public interest readily accessible. That is a high-value added skill and a crucial part of the valorisation of public-funded research, never to be underestimated. Finally museums are, at present, undergoing something of a renaissance. Museums today are vibrant environments offering new techniques and technologies to both inform and entertain, and attract visitors of all demographics.JRC.H.2-Knowledge Management Methodologies, Communities and Disseminatio