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Erratum: Unequivocal evidence for endogenous geranylgeranoic acid biosynthesized from mevalonate in mammalian cells [Errata]




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Problem Notes for SAS®9 - 65927: The Copy Files task in SAS Enterprise Guide 8.2 fails with the message "ERROR: Target folder does not exist or cannot be accessed"

When you run the Copy Files task in SAS Enterprise Guide and there is no connection to a SAS server, it fails with the following error: "ERROR: Target folder does not exist or cannot be accessed."




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Problem Notes for SAS®9 - 65869: SAS Visual Data Builder does not enable you to schedule with multiple time-event triggers

SAS Visual Data Builder might not enable you to create multiple time-event triggers. The + button to add another trigger is not available to select, as shown in the following display: imgalt="" src="{fusion_658




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Here's your guide to Rays Spring Training

Baseball season is now on the clock and the Rays are looking to get back to the postseason for the first time since 2014. That quest will begin next week as Spring Training is finally upon us. Here's a primer to get you informed on all you need to know this spring.




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30 low-key acquisitions who could pay off big

Fans and analysts spend the entire offseason speculating where the top free agents could go, but sometimes an under-the-radar pickup can end up making a world of difference. As positional competitions begin to heat up at Spring Training camps this month, MLB.com's beat writers were asked to identify one potentially overlooked acquisition for each of the 30 clubs. Here's who they came up with.




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Glasnow working to quicken delivery

Tyler Glasnow is hoping to build off a positive 2018, but his delivery is going to look a little different this season.




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MtrP, a putative methyltransferase in Corynebacteria, is required for optimal membrane transport of trehalose mycolates [Lipids]

Pathogenic bacteria of the genera Mycobacterium and Corynebacterium cause severe human diseases such as tuberculosis (Mycobacterium tuberculosis) and diphtheria (Corynebacterium diphtheriae). The cells of these species are surrounded by protective cell walls rich in long-chain mycolic acids. These fatty acids are conjugated to the disaccharide trehalose on the cytoplasmic side of the bacterial cell membrane. They are then transported across the membrane to the periplasm where they act as donors for other reactions. We have previously shown that transient acetylation of the glycolipid trehalose monohydroxycorynomycolate (hTMCM) enables its efficient transport to the periplasm in Corynebacterium glutamicum and that acetylation is mediated by the membrane protein TmaT. Here, we show that a putative methyltransferase, encoded at the same genetic locus as TmaT, is also required for optimal hTMCM transport. Deletion of the C. glutamicum gene NCgl2764 (Rv0224c in M. tuberculosis) abolished acetyltrehalose monocorynomycolate (AcTMCM) synthesis, leading to accumulation of hTMCM in the inner membrane and delaying its conversion to trehalose dihydroxycorynomycolate (h2TDCM). Complementation with NCgl2764 normalized turnover of hTMCM to h2TDCM. In contrast, complementation with NCgl2764 derivatives mutated at residues essential for methyltransferase activity failed to rectify the defect, suggesting that NCgl2764/Rv0224c encodes a methyltransferase, designated here as MtrP. Comprehensive analyses of the individual mtrP and tmaT mutants and of a double mutant revealed strikingly similar changes across several lipid classes compared with WT bacteria. These findings indicate that both MtrP and TmaT have nonredundant roles in regulating AcTMCM synthesis, revealing additional complexity in the regulation of trehalose mycolate transport in the Corynebacterineae.




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Glucose-Stimulated Insulin Secretion Fundamentally Requires H2O2 Signaling by NADPH Oxidase 4

NADPH facilitates glucose-stimulated insulin secretion (GSIS) in pancreatic islet (PI) β-cells by an as yet unknown mechanism. We found NADPH oxidase, isoform-4 (NOX4), to be the major producer of cytosolic H2O2, essential for GSIS, while the increase in ATP/ADP alone was insufficient. The fast GSIS phase was absent in PIs from NOX4-null, β-cell-specific knockout mice (NOX4βKO) (not NOX2KO), and NOX4-silenced or catalase-overexpressing INS-1E cells. Lentiviral NOX4 overexpression or H2O2 rescued GSIS in PIs from NOX4βKO mice. NOX4 silencing suppressed Ca2+ oscillations and the patch-clamped ATP-sensitive potassium channel (KATP) opened more frequently at high glucose. Mitochondrial H2O2, decreasing upon GSIS, provided an alternative redox signaling when 2-oxo-isocaproate or fatty acid oxidation formed superoxide by electron-transport flavoprotein:Q-oxidoreductase. Unlike GSIS, this ceased with mitochondrial antioxidant SkQ1. Both NOX4KO and NOX4βKO strains exhibited impaired glucose tolerance and peripheral insulin resistance. Thus the redox signaling previously suggested to cause β-cell-self-checking – hypothetically induces insulin resistance when absent. In conclusion, ATP plus H2O2 elevations constitute an essential switch-on signal of insulin exocytosis for glucose and branched-chain oxoacids as secretagogues (partly for fatty acids). Redox signaling could be impaired by cytosolic antioxidants, hence those targeting mitochondria should be preferred for clinical applications to treat (pre)diabetes at any stage.




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Proline-rich 11 (PRR11) drives F-actin assembly by recruiting the actin-related protein 2/3 complex in human non-small cell lung carcinoma [DNA and Chromosomes]

The actin cytoskeleton is extremely dynamic and supports diverse cellular functions in many physiological and pathological processes, including tumorigenesis. However, the mechanisms that regulate the actin-related protein 2/3 (ARP2/3) complex and thereby promote actin polymerization and organization in cancer cells are not well-understood. We previously implicated the proline-rich 11 (PRR11) protein in lung cancer development. In this study, using immunofluorescence staining, actin polymerization assays, and siRNA-mediated gene silencing, we uncovered that cytoplasmic PRR11 is involved in F-actin polymerization and organization. We found that dysregulation of PRR11 expression results in F-actin rearrangement and nuclear instability in non-small cell lung cancer cells. Results from molecular mechanistic experiments indicated that PRR11 associates with and recruits the ARP2/3 complex, facilitates F-actin polymerization, and thereby disrupts the F-actin cytoskeleton, leading to abnormal nuclear lamina assembly and chromatin reorganization. Inhibition of the ARP2/3 complex activity abolished irregular F-actin polymerization, lamina assembly, and chromatin reorganization due to PRR11 overexpression. Notably, experiments with truncated PRR11 variants revealed that PRR11 regulates F-actin through different regions. We found that deletion of either the N or C terminus of PRR11 abrogates its effects on F-actin polymerization and nuclear instability and that deletion of amino acid residues 100–184 or 100–200 strongly induces an F-actin structure called the actin comet tail, not observed with WT PRR11. Our findings indicate that cytoplasmic PRR11 plays an essential role in regulating F-actin assembly and nuclear stability by recruiting the ARP2/3 complex in human non-small cell lung carcinoma cells.




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SUMOylation of the transcription factor ZFHX3 at Lys-2806 requires SAE1, UBC9, and PIAS2 and enhances its stability and function in cell proliferation [Protein Synthesis and Degradation]

SUMOylation is a posttranslational modification (PTM) at a lysine residue and is crucial for the proper functions of many proteins, particularly of transcription factors, in various biological processes. Zinc finger homeobox 3 (ZFHX3), also known as AT motif-binding factor 1 (ATBF1), is a large transcription factor that is active in multiple pathological processes, including atrial fibrillation and carcinogenesis, and in circadian regulation and development. We have previously demonstrated that ZFHX3 is SUMOylated at three or more lysine residues. Here, we investigated which enzymes regulate ZFHX3 SUMOylation and whether SUMOylation modulates ZFHX3 stability and function. We found that SUMO1, SUMO2, and SUMO3 each are conjugated to ZFHX3. Multiple lysine residues in ZFHX3 were SUMOylated, but Lys-2806 was the major SUMOylation site, and we also found that it is highly conserved among ZFHX3 orthologs from different animal species. Using molecular analyses, we identified the enzymes that mediate ZFHX3 SUMOylation; these included SUMO1-activating enzyme subunit 1 (SAE1), an E1-activating enzyme; SUMO-conjugating enzyme UBC9 (UBC9), an E2-conjugating enzyme; and protein inhibitor of activated STAT2 (PIAS2), an E3 ligase. Multiple analyses established that both SUMO-specific peptidase 1 (SENP1) and SENP2 deSUMOylate ZFHX3. SUMOylation at Lys-2806 enhanced ZFHX3 stability by interfering with its ubiquitination and proteasomal degradation. Functionally, Lys-2806 SUMOylation enabled ZFHX3-mediated cell proliferation and xenograft tumor growth of the MDA-MB-231 breast cancer cell line. These findings reveal the enzymes involved in, and the functional consequences of, ZFHX3 SUMOylation, insights that may help shed light on ZFHX3's roles in various cellular and pathophysiological processes.




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Genetic lineage tracing with multiple DNA recombinases: A user's guide for conducting more precise cell fate mapping studies [Methods and Resources]

Site-specific recombinases, such as Cre, are a widely used tool for genetic lineage tracing in the fields of developmental biology, neural science, stem cell biology, and regenerative medicine. However, nonspecific cell labeling by some genetic Cre tools remains a technical limitation of this recombination system, which has resulted in data misinterpretation and led to many controversies in the scientific community. In the past decade, to enhance the specificity and precision of genetic targeting, researchers have used two or more orthogonal recombinases simultaneously for labeling cell lineages. Here, we review the history of cell-tracing strategies and then elaborate on the working principle and application of a recently developed dual genetic lineage-tracing approach for cell fate studies. We place an emphasis on discussing the technical strengths and caveats of different methods, with the goal to develop more specific and efficient tracing technologies for cell fate mapping. Our review also provides several examples for how to use different types of DNA recombinase–mediated lineage-tracing strategies to improve the resolution of the cell fate mapping in order to probe and explore cell fate–related biological phenomena in the life sciences.




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Zinc promotes liquid-liquid phase separation of tau protein [Protein Structure and Folding]

Tau is a microtubule-associated protein that plays a major role in Alzheimer's disease (AD) and other tauopathies. Recent reports indicate that, in the presence of crowding agents, tau can undergo liquid–liquid phase separation (LLPS), forming highly dynamic liquid droplets. Here, using recombinantly expressed proteins, turbidimetry, fluorescence microscopy imaging, and fluorescence recovery after photobleaching (FRAP) assays, we show that the divalent transition metal zinc strongly promotes this process, shifting the equilibrium phase boundary to lower protein or crowding agent concentrations. We observed no tau LLPS-promoting effect for any other divalent transition metal ions tested, including Mn2+, Fe2+, Co2+, Ni2+, and Cu2+. We also demonstrate that multiple zinc-binding sites on tau are involved in the LLPS-promoting effect and provide insights into the mechanism of this process. Zinc concentration is highly elevated in AD brains, and this metal ion is believed to be an important player in the pathogenesis of this disease. Thus, the present findings bring a new dimension to understanding the relationship between zinc homeostasis and the pathogenic process in AD and related neurodegenerative disorders.




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Correction: A dual druggable genome-wide siRNA and compound library screening approach identifies modulators of parkin recruitment to mitochondria. [Additions and Corrections]

VOLUME 295 (2020) PAGES 3285–3300An incorrect graph was used in Fig. 5C. This error has now been corrected. Additionally, some of the statistics reported in the legend and text referring to Fig. 5C were incorrect. The F statistics for Fig. 5C should state Fken(3,16) = 7.454, p < 0.01; FCCCP(1,16) = 102.9, p < 0.0001; Finteraction(3,16) = 7.480, p < 0.01. This correction does not affect the results or conclusions of this work.jbc;295/17/5835/F5F1F5Figure 5C.




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30 low-key acquisitions who could pay off big

Fans and analysts spend the entire offseason speculating where the top free agents could go, but sometimes an under-the-radar pickup can end up making a world of difference. As positional competitions begin to heat up at Spring Training camps this month, MLB.com's beat writers were asked to identify one potentially overlooked acquisition for each of the 30 clubs. Here's who they came up with.




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Giants acquire righty reliever Gott from Nats

The Giants added another arm into their bullpen mix Wednesday, acquiring right-hander Trevor Gott from the Nationals for cash considerations.




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Sandoval instrumental in recruiting FA friends

Pablo Sandoval said he recruited his friends Gerardo Parra and Yangervis Solarte to the Giants in the offseason.




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Re: Chloroquine and hydroxychloroquine in covid-19




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Courageously critiquing sexual violence: responding to the 2018 Nobel Peace Prize

6 November 2019 , Volume 95, Number 6

Maria Stern

Marysia Zalewski's work has taught us, as a collective of feminist scholars, to be cautious of neat instruction manuals and coherently set out plans of action; of claims to sure knowledge about danger, violence, and its subjects and remedies; of the fanfare of grand arrivals; and of the quieter staking of ground that has been seemingly won. Zalewski has persistently reminded us in different ways that we/she does ‘not even know what gender is or does’. Far from a flippant response to the emptiness of gender mainstreaming policies, this seemingly simple statement instead serves as a glaring post-it note on the margins of our texts about International Relations theory, feminism, sex/gender and violence— both those that we read, as well as those that we write. However, this lesson is often forgotten in our rush to understand and establish gendered harms as valid and important, and to seek their redress. Gleaning insights from Zalewski's work, this article critically considers possible responses to the 2018 Nobel Peace Prize. Its aim is not to delve into a discussion of the politics or effects of the Peace Prize as such, but to instead use the 2018 Peace Prize as a marker—a moment to consider the possibility for critique in relation to sexual violence.




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Louis Nirenberg

Louis Nirenberg died January 26, 2020 at the age of 94.  He made tremendous contributions to the field of partial differential equations and global analysis.   Nirenberg spent essentially his entire career at the Courant Institute at NYU.  Indeed, he … Continue reading




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The EU Cannot Build a Foreign Policy on Regulatory Power Alone

11 February 2020

Alan Beattie

Associate Fellow, Global Economy and Finance Programme and Europe Programme
Brussels will find its much-vaunted heft in setting standards cannot help it advance its geopolitical interests.

2020-02-11-Leyen.jpg

EU Commission President Ursula von der Leyen speaks at the European Parliament in Strasbourg in February. Photo: Getty Images.

There are two well-established ideas in trade. Individually, they are correct. Combined, they can lead to a conclusion that is unfortunately wrong.

The first idea is that, across a range of economic sectors, the EU and the US have been engaged in a battle to have their model of regulation accepted as the global one, and that the EU is generally winning.

The second is that governments can use their regulatory power to extend strategic and foreign policy influence.

The conclusion would seem to be that the EU, which has for decades tried to develop a foreign policy, should be able to use its superpower status in regulation and trade to project its interests and its values abroad.

That’s the theory. It’s a proposition much welcomed by EU policymakers, who know they are highly unlikely any time soon to acquire any of the tools usually required to run an effective foreign policy.

The EU doesn’t have an army it can send into a shooting war, enough military or political aid to prop up or dispense of governments abroad, or a centralized intelligence service. Commission President Ursula von der Leyen has declared her outfit to be a ‘geopolitical commission’, and is casting about for any means of making that real.

Through the ‘Brussels effect’ whereby European rules and standards are exported via both companies and governments, the EU has indeed won many regulatory battles with the US.

Its cars, chemicals and product safety regulations are more widely adopted round the world than their American counterparts. In the absence of any coherent US offering, bar some varied state-level systems, the General Data Protection Regulation (GDPR) is the closest thing the world has to a single model for data privacy, and variants of it are being adopted by dozens of countries.

The problem is this. Those parts of global economic governance where the US is dominant – particularly the dollar payments system – are highly conducive to projecting US power abroad. The extraterritorial reach of secondary sanctions, plus the widespread reliance of banks and companies worldwide on dollar funding – and hence the American financial system – means that the US can precisely target its influence.

The EU can enforce trade sanctions, but not in such a powerful and discriminatory way, and it will always be outgunned by the US. Donald Trump could in effect force European companies to join in his sanctions on Iran when he pulled out of the nuclear deal, despite EU legislation designed to prevent their businesses being bullied. He can go after the chief financial officer of Huawei for allegedly breaching those sanctions.

By contrast, the widespread adoption of GDPR or data protection regimes inspired by it may give the EU a warm glow of satisfaction, but it cannot be turned into a geopolitical tool in the same way.

Nor, necessarily, does it particularly benefit the EU economy. Europe’s undersized tech sector seems unlikely to unduly benefit from the fact that data protection rules were written in the EU. Indeed, one common criticism of the regulations is that they entrench the power of incumbent tech giants like Google.

There is a similar pattern at work in the adoption of new technologies such as artificial intelligence and the Internet of Things. In that field, the EU and its member states are also facing determined competition from China, which has been pushing its technologies and standards through forums such as the International Telecommunication Union.

The EU has been attempting to write international rules for the use of AI which it hopes to be widely adopted. But again, these are a constraint on the use of new technologies largely developed by others, not the control of innovation.

By contrast, China has created a vast domestic market in technologies like facial recognition and unleashed its own companies on it. The resulting surveillance kit can then be marketed to emerging market governments as part of China’s enduring foreign policy campaign to build up supporters in the developing world.

If it genuinely wants to turn its economic power into geopolitical influence – and it’s not entirely clear what it would do with it if it did – the EU needs to recognize that not all forms of regulatory and trading dominance are the same.

Providing public goods to the world economy is all very well. But unless they are so particular in nature that they project uniquely European values and interests, that makes the EU a supplier of useful plumbing but not a global architect of power.

On the other hand, it could content itself with its position for the moment. It could recognize that not until enough hard power – guns, intelligence, money – is transferred from the member states to the centre, or until the member states start acting collectively, will the EU genuinely become a geopolitical force. Speaking loudly and carrying a stick of foam rubber is rarely a way to gain credibility in international relations.

This article is part of a series of publications and roundtable discussions in the Chatham House Global Trade Policy Forum.




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Cow’s milk allergy guidelines are not evidence based and are beset by conflicts of interest, researchers warn




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Covid-19: Campaigner calls for national guidance to stop DNR orders being made without discussion with patients and families




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Fruit Plant Suplemen Diet Herbal Alami - Rahasia Pria

Fruit Plant Original Pelangsing Badan Herbal terbuat dari Sayuran Dan Buah-Buahan Berkualitas Tinggi Mampu Menjadikan Sehat Serta Langsing Secara Cepat



  • Sports and Health

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Building a solution - UWI Faculty of Engineering answering COVID-19 call

THE FACULTY of Engineering at The University of the West Indies (UWI), Mona campus, is stepping up to the plate in the fight against the new coronavirus (COVID-19) through its final-year projects and commercial arm, Mona-Tech Engineering Services....




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Three Challenges for UK Peacebuilding Policy in the South Caucasus After Brexit

21 January 2020

Laurence Broers

Associate Fellow, Russia and Eurasia Programme
Building on the legacies of a long-term British investment in a peace strategy for the South Caucasus is a realistic and attainable goal.

2020-01-21-NK.jpg

A building in Nagorny Karabakh flies the flag of the self-proclaimed republic. 'Abkhazia, South Ossetia and Nagorny Karabakh have evolved into examples of what scholars call "de facto states" that, to differing degrees, control territory, provide governance and exercise internal sovereignty,' writes Laurence Broers. Photo: Getty Images.

What does Britain’s departure from the EU mean for the country’s policy towards the South Caucasus, a small region on the periphery of Europe, fractured by conflict? Although Britain is not directly involved in any of the region’s peace processes (except in the case of the Geneva International Discussions on conflicts involving Georgia, as an EU member state), it has been a significant stakeholder in South Caucasian stability since the mid-1990s.

Most obviously, Britain has been the single largest foreign investor in Caspian oil and gas. Yet beyond pipelines, Britain also has been a significant investor in long-term civil society-led strategies to build peace in the South Caucasus.

Through what was then the Global Conflict Prevention Pool, in the early 2000s the Department for International Development (DfID) pioneered large-scale peacebuilding interventions, such as the Consortium Initiative, addressing Armenian-Azerbaijani conflict, in 2003-09. These built civic networks in the South Caucasus and partnerships with British-based NGOs.

This experience left a strong intellectual legacy. British expertise on the South Caucasus, including specific expertise on its conflicts, is highly regarded in the region and across the world.

There is also a strong tradition of British scholarship on the Caucasus, and several British universities offer Caucasus-related courses. Through schemes such as the John Smith Fellowship Trust, the Robert Bosch Stiftung Academy Fellowship at Chatham House and Chevening Scholarships, significant numbers of young leaders from the South Caucasus have spent time in British institutions and built effective relationships within them.

Three challenges

This niche as a champion of long-term, strategic peacebuilding and repository of area-specific knowledge should not be lost as Britain’s relationship with the EU and regional actors evolves. This can be ensured through awareness of three challenges confronting a post-Brexit Caucasus policy.

The first challenge for London is to avoid framing a regional policy in the South Caucasus as an extension of a wider ‘Russia policy’. Deteriorating Russian-British relations in recent years strengthen a tendency to view policies in the European neighbourhood through the traditional prisms of Cold War and Russian-Western rivalries.

Yet an overwhelming focus on Russia fails to capture other important aspects of political developments in South Caucasus conflicts. Although often referred to as ‘breakaway’ or ‘occupied’ territories, Abkhazia, South Ossetia and Nagorny Karabakh are not ungoverned spaces. They have evolved into examples of what scholars call ‘de facto states’ that, to differing degrees, control territory, provide governance and exercise internal sovereignty.

Few disagree that these entities would not survive without external patronage. But neither does that patronage explain their sustainability on its own. Russia-centricity diminishes Britain’s latitude to engage on the full range of local drivers sustaining these entities, contributing instead to less effective policies predicated on competition and containment.

A second and related challenge is to maintain and develop Britain’s position on the issue of engaging populations in these entities. De facto states appear to stand outside of the international rules-based system. Yet in many cases, their civil societies are peopled by skilled and motivated activists who want their leaders to be held accountable according to international rules.

Strategies of isolation ignore these voices and contribute instead to fearful and demoralized communities less likely to engage in a transformation of adversarial relationships. Making this case with the wider international community, and facilitating the funding of local civil societies in contested territories, would be important steps in sustaining an effective British policy on the resolution of conflicts.    

The third challenge for Britain is to maintain a long-term approach to the conflicts of the South Caucasus alongside potential short-term imperatives in other policy fields, as relationships shift post-Brexit.

In this fluid international environment, the Foreign and Commonwealth Office has a role to play both as an internal champion of a long-term peacebuilding strategy and a coordinator of British efforts with those of multilateral actors engaged in the South Caucasus. These include the United Nations, the EU’s Special Representative for the South Caucasus and the Crisis in Georgia and OSCE’s Special Representative for the OSCE Chairperson-in-Office for the South Caucasus, all of which have built relationships with relevant actors on the ground.

Recommendations

Britain’s niche as a champion and advocate of a strategic approach to peaceful change can be secured post-Brexit in the following ways.  

First, in-house expertise is crucial to effective peacebuilding programming. The Foreign Office’s research analysts play a vital role in generating independent internal advice and liaising with academic and NGO communities. Their role could be supplemented by the reinstatement of a regional conflict adviser post, based in Tbilisi, tasked with strengthening Britain’s regional presence on conflict issues and coordinating policy at a regional level.

This post, with a remit to cover conflicts and build up area knowledge and relationships can contribute significantly to working closely with local civil societies, where so much expertise and knowledge resides, as well as other stakeholders.

Second, programming should build in conflict sensitivity by dissociating eligibility from contested political status. This can encourage local populations to take advantage of opportunities for funding, study, comparative learning and professional development irrespective of the status of the entity where they reside.

The Chevening Scholarships are an excellent example, whereby applicants can select ‘South Caucasus’ as their affiliated identity from a drop-down menu. This enables citizens from across the region to apply irrespective of the status of the territory in which they live.   

Finally, a holistic understanding of peace is crucial. Programming in unrecognized or partially-recognized entities should acknowledge that effective peacebuilding needs to embrace political dynamics and processes beyond cross-conflict contact and confidence building. Local actors in such entities may find peacebuilding funding streams defined exclusively in terms of cross-conflict contact more politically risky and ineffective in addressing domestic blockages to peace.

While cross-conflict dynamics remain critical, ‘single-community’ programming framed in terms of civic participation, inclusion, civil society capacity-building, minority and human rights in contested territories, and building the confidence from within to engage in constructive dialogue, are no less important.

The ’global Britain’ promised by Brexit remains a fanciful idea. Quiet, painstaking work to build on the legacies of a long-term British investment in a peace strategy for the South Caucasus, on the other hand, is a realistic and attainable goal.




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Vanquished

  Aliens have been vanquished before. Dolphins, Whales, Elephants, Orchids all, Intelligent, Cannot look after Earth, May have seen the end coming, not Had the means to pollinate, Thought life, Conscious, must Be responsible, For life, have Missed the archer, Choosing the trajectory, Been the arrow, Aliens, Forgetting that food Chains, Are best when, Dolphins, […]




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Dicks in Space Suits

Dead beetles die in their skins, and Seychellois, Mauritanians, Maurtians, Martians, Fighting with sun-tans all, and Bad lip jobs, In Nairobi, Silent giraffes grope for love, God, Tends to antelopes, The world ends In a traffic jam or, Dicks in space-suits building railways​ through the heart of a city. ♦Photo♦ Friends of Nairobi National Park -short evocative […]




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HB-EGF Signaling Is Required for Glucose-Induced Pancreatic {beta}-Cell Proliferation in Rats

The molecular mechanisms of β-cell compensation to metabolic stress are poorly understood. We previously observed that nutrient-induced β-cell proliferation in rats is dependent on epidermal growth factor receptor (EGFR) signaling. The aim of this study was to determine the role of the EGFR ligand heparin-binding EGF-like growth factor (HB-EGF) in the β-cell proliferative response to glucose, a β-cell mitogen and key regulator of β-cell mass in response to increased insulin demand. We show that exposure of isolated rat and human islets to HB-EGF stimulates β-cell proliferation. In rat islets, inhibition of EGFR or HB-EGF blocks the proliferative response not only to HB-EGF but also to glucose. Furthermore, knockdown of HB-EGF in rat islets blocks β-cell proliferation in response to glucose ex vivo and in vivo in transplanted glucose-infused rats. Mechanistically, we demonstrate that HB-EGF mRNA levels are increased in β-cells in response to glucose in a carbohydrate-response element–binding protein (ChREBP)–dependent manner. In addition, chromatin immunoprecipitation studies identified ChREBP binding sites in proximity to the HB-EGF gene. Finally, inhibition of Src family kinases, known to be involved in HB-EGF processing, abrogated glucose-induced β-cell proliferation. Our findings identify a novel glucose/HB-EGF/EGFR axis implicated in β-cell compensation to increased metabolic demand.




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PRMT1 Is Required for the Maintenance of Mature {beta}-Cell Identity

Loss of functional β-cell mass is an essential feature of type 2 diabetes, and maintaining mature β-cell identity is important for preserving a functional β-cell mass. However, it is unclear how β-cells achieve and maintain their mature identity. Here we demonstrate a novel function of protein arginine methyltransferase 1 (PRMT1) in maintaining mature β-cell identity. Prmt1 knockout in fetal and adult β-cells induced diabetes, which was aggravated by high-fat diet–induced metabolic stress. Deletion of Prmt1 in adult β-cells resulted in the immediate loss of histone H4 arginine 3 asymmetric dimethylation (H4R3me2a) and the subsequent loss of β-cell identity. The expression levels of genes involved in mature β-cell function and identity were robustly downregulated as soon as Prmt1 deletion was induced in adult β-cells. Chromatin immunoprecipitation sequencing and assay for transposase-accessible chromatin sequencing analyses revealed that PRMT1-dependent H4R3me2a increases chromatin accessibility at the binding sites for CCCTC-binding factor (CTCF) and β-cell transcription factors. In addition, PRMT1-dependent open chromatin regions may show an association with the risk of diabetes in humans. Together, our results indicate that PRMT1 plays an essential role in maintaining β-cell identity by regulating chromatin accessibility.




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Here's your guide to Braves Spring Training

Here are answers to some of the primary questions you may have as the defending National League East champs prepare to begin Spring Training next week.




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Quiet offseason shouldn't nix Braves' potential

As the Mets, Nationals and Phillies have made multiple upgrades, Braves GM Alex Anthopoulos has thus far limited his offseason activity to giving Josh Donaldson a record one-year deal and bringing to fruition the desires of Brian McCann and Nick Markakis to play for the Braves.




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30 low-key acquisitions who could pay off big

Fans and analysts spend the entire offseason speculating where the top free agents could go, but sometimes an under-the-radar pickup can end up making a world of difference. As positional competitions begin to heat up at Spring Training camps this month, MLB.com's beat writers were asked to identify one potentially overlooked acquisition for each of the 30 clubs. Here's who they came up with.




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Touissant among top 20 impact rookies for 2019

Here are the top players in each league who could get the opportunity to show what they can do at the highest level this year, perhaps even contending for Rookie of the Year honors




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O's aim to rely on experience during rebuild

In outlining their plans to rebuild the Orioles following the least successful season in franchise history, new club officials routinely point to experience: They just did the same thing elsewhere.




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30 low-key acquisitions who could pay off big

Fans and analysts spend the entire offseason speculating where the top free agents could go, but sometimes an under-the-radar pickup can end up making a world of difference. As positional competitions begin to heat up at Spring Training camps this month, MLB.com's beat writers were asked to identify one potentially overlooked acquisition for each of the 30 clubs. Here's who they came up with.




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30 low-key acquisitions who could pay off big

Fans and analysts spend the entire offseason speculating where the top free agents could go, but sometimes an under-the-radar pickup can end up making a world of difference. As positional competitions begin to heat up at Spring Training camps this month, MLB.com's beat writers were asked to identify one potentially overlooked acquisition for each of the 30 clubs. Here's who they came up with.




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Michelle Sinclair GP - surgery buildings are not up to scratch

Michelle Sinclar, a GP in Hampshire who is concerned that GP premises aren't fit for purpose and limit her ability to provide fully rounded patient care. BMJ Voices is a collection of readers’ experiences of working in the NHS. For this, The BMJ is seeking short audio submissions from UK listeners. These submissions will be published on...




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The BMJ requires data sharing on request for all trials

The movement to make data from clinical trials widely accessible has achieved enormous success, and it is now time for medical journals to play their part. From 1 July The BMJ will extend its requirements for data sharing to apply to all submitted clinical trials, not just those that test drugs or devices. The BMJ's Elizabeth Loder explains what...




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How scientific are US dietary guidelines?

They have a big impact on the diet of American citizens, and those of most Western nations, so why does the expert advice underpinning US government dietary guidelines not take account of all the relevant scientific evidence asks Nina Teicholz. Read the full investigation: http://www.bmj.com/content/351/bmj.h4962




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How to build a resillient health system

The 2014 west African Ebola epidemic shone a harsh light on the health systems of Guinea, Liberia, and Sierra Leone. While decades of domestic and international investment had contributed to substantial progress on the Millennium Development Goals, national health systems remained weak and were unable to cope with the epidemic. Margaret Kruk...




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"For the first time in 15 years the quitting rate has gone up" - ecigarettes smoking cessation

It’s been 10 years since electronic cigarettes hit the shelves in a big way - and since there controversy has reigned about their health effects - are they less unhealthy than smoking traditional tobacco cigarettes, and will they increase nicotine dependence? Its to that last point that new research, published on BMJ.com is looking into -...




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The counter intuitive effect of open label placebo

Ted Kaptchuk, professor of medicine at Harvard Medical school - and leading placebo researcher, has just published an analysis on bmj.com describing the effect of open label placebo - placebos that patient's know are placebos, but still seem to have some clinical effect. Ted joins us to speculate about what's going on in the body, what this means...




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Talk Evidence - Building an evidence base for covid-19

We're taking a break from the usual Talk Evidence to focus on the new corona virus that has emerged in China. With a brand new disease, we have to build our evidence base from scratch - basic virology, epidemiology, pathogenicity, transmissibility, and ultimately treatment are all unknowns. In this episode of Talk Evidence, we're trying to get...




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Talk Evidence covid-19 update - pneumonia, guidelines, preprints and testing

For the next few months Talk Evidence is going to focus on the new corona virus pandemic. There is an enormous amount of uncertainty about the disease, what the symptoms are, fatality rate, treatment options, things we shouldn't be doing. We're going to try to get away from the headlines and talk about what we need to know - to hopefully give...




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Talk Evidence covid-19 update - hydroxy/chloroquinine, prognostic models and facemaskss

For the next few months Talk Evidence is going to focus on the new corona virus pandemic. There is an enormous amount of uncertainty about the disease, what the symptoms are, fatality rate, treatment options, things we shouldn't be doing. We're going to try to get away from the headlines and talk about what we need to know - to hopefully give...




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Talk evidence covid-19 update: natural history of covid, include patients in guidelines

For the next few months Talk Evidence is going to focus on the new corona virus pandemic. There is an enormous amount of uncertainty about the disease, what the symptoms are, fatality rate, treatment options, things we shouldn't be doing. We're going to try to get away from the headlines and talk about what we need to know - to hopefully give you...




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CARPHA urges public to guard against mosquito-borne diseases

PORT OF SPAIN, Trinidad, CMC – The Trinidad-based Caribbean Public Health Agency (CARPHA) is urging people in the region to remember that despite the coronavirus (COVID-19) pandemic, they must be mindful that other public health threats still...




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Rammya Mathew: Liquid diets offer promise, but we still need upstream solutions




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Inbox: Will new skipper Bell have quick hook?

Beat reporter Mark Sheldon answers questions about David Bell's managing style, free agents and who will play center field.




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Puig in different city but keeping personality

Though some Reds fans were disappointed that Billy Hamilton wasn't brought back this season, it didn't take long for Cincinnati to find another dynamic player who also brings flash and unpredictability. That would be outfielder Yasiel Puig.