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Effects of Coffee Consumption on Fasting Blood Glucose and Insulin Concentrations: Randomized controlled trials in healthy volunteers

Rob M. van Dam
Dec 1, 2004; 27:2990-2992
Brief Reports




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Vasodilatory Actions of Glucagon-Like Peptide 1 Are Preserved in Skeletal and Cardiac Muscle Microvasculature but Not in Conduit Artery in Obese Humans With Vascular Insulin Resistance

OBJECTIVE

Obesity is associated with microvascular insulin resistance, which is characterized by impaired insulin-mediated microvascular recruitment. Glucagon-like peptide 1 (GLP-1) recruits skeletal and cardiac muscle microvasculature, and this action is preserved in insulin-resistant rodents. We aimed to examine whether GLP-1 recruits microvasculature and improves the action of insulin in obese humans.

RESEARCH DESIGN AND METHODS

Fifteen obese adults received intravenous infusion of either saline or GLP-1 (1.2 pmol/kg/min) for 150 min with or without a euglycemic insulin clamp (1 mU/kg/min) superimposed over the last 120 min. Skeletal and cardiac muscle microvascular blood volume (MBV), flow velocity and blood flow, brachial artery diameter and blood flow, and pulse wave velocity (PWV) were determined.

RESULTS

Insulin failed to change MBV or flow in either skeletal or cardiac muscle, confirming the presence of microvascular insulin resistance. GLP-1 infusion alone increased MBV by ~30% and ~40% in skeletal and cardiac muscle, respectively, with no change in flow velocity, leading to a significant increase in microvascular blood flow in both skeletal and cardiac muscle. Superimposition of insulin to GLP-1 infusion did not further increase MBV or flow in either skeletal or cardiac muscle but raised the steady-state glucose infusion rate by ~20%. Insulin, GLP-1, and GLP-1 + insulin infusion did not alter brachial artery diameter and blood flow or PWV. The vasodilatory actions of GLP-1 are preserved in both skeletal and cardiac muscle microvasculature, which may contribute to improving metabolic insulin responses and cardiovascular outcomes.

CONCLUSIONS

In obese humans with microvascular insulin resistance, GLP-1’s vasodilatory actions are preserved in both skeletal and cardiac muscle microvasculature, which may contribute to improving metabolic insulin responses and cardiovascular outcomes.




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Policy Options for Responding to Changing Migration Flows at the Southwest Border

Testimony of Andrew Selee, President of MPI, before Senate Committee on Homeland Security and Governmental Affairs on April 4, 2019 regarding response to changing migration flows at the Southwest border.




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National Children’s Dental Health Month highlights optimally fluoridated water

This year the February observance of National Children’s Dental Health Month honors the 75th anniversary of community water fluoridation with its theme, “Fluoride in water prevents cavities! Get it from the tap!”




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SBA will resume accepting Paycheck Protection Program applications April 27

The Small Business Administration will resume accepting Paycheck Protection Program loan applications at 10:30 a.m. EST on April 27 from “approved lenders on behalf of any eligible borrower,” the agency said.




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Patient portals need proxy options for better privacy protection, study finds

More patient portals and electronic health records should enable users to create "proxy" accounts for nurses and home aids to prevent unintentional sharing of personal health details, researchers said Monday.




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Use of Glucagon-Like Peptide 1 Receptor Agonists and Risk of Serious Renal Events: Scandinavian Cohort Study

OBJECTIVE

To assess the association between use of glucagon-like peptide 1 (GLP-1) receptor agonists and risk of serious renal events in routine clinical practice.

RESEARCH DESIGN AND METHODS

This was a cohort study using an active-comparator, new-user design and nationwide register data from Sweden, Denmark, and Norway during 2010–2016. The cohort included 38,731 new users of GLP-1 receptor agonists (liraglutide 92.5%, exenatide 6.2%, lixisenatide 0.7%, and dulaglutide 0.6%), matched 1:1 on age, sex, and propensity score to a new user of the active comparator, dipeptidyl peptidase 4 (DPP-4) inhibitors. The main outcome was serious renal events, a composite including renal replacement therapy, death from renal causes, and hospitalization for renal events. Secondary outcomes were the individual components of the main outcome. Hazard ratios (HRs) were estimated using Cox models and an intention-to-treat exposure definition. Mean (SD) follow-up time was 3.0 (1.7) years.

RESULTS

Mean (SD) age of the study population was 59 (10) years, and 18% had cardiovascular disease. A serious renal event occurred in 570 users of GLP-1 receptor agonists (incidence rate 4.8 events per 1,000 person-years) and in 722 users of DPP-4 inhibitors (6.3 events per 1,000 person-years, HR 0.76 [95% CI 0.68–0.85], absolute difference –1.5 events per 1,000 person-years [–2.1 to –0.9]). Use of GLP-1 receptor agonists was associated with a significantly lower risk of renal replacement therapy (HR 0.73 [0.62–0.87]) and hospitalization for renal events (HR 0.73 [0.65–0.83]) but not death from renal causes (HR 0.72 [0.48–1.10]). When we used an as treated exposure definition in which patients were censored at treatment cessation or switch to the other study drug, the HR for the primary outcome was 0.60 (0.49–0.74).

CONCLUSIONS

In this large cohort of patients seen in routine clinical practice in three countries, use of GLP-1 receptor agonists, as compared with DPP-4 inhibitors, was associated with a reduced risk of serious renal events.




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Global warming fuels algal bloom disrupting fisheries in Arabian Sea

A new scientific study published Monday found that global warming is fueling a destructive algal bloom that is disrupting fisheries in the Arabian sea.




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Early marine reptiles used pebble-like teeth to crush shellfish

Some early ichthyosaurs used rounded, pebble-like teeth to crush the shells of snails and clam-like bivalves, according to new research.




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Ask Ariely: On Overwhelming Options, Better Budgets, and Expensive Emotions

Here’s my Q&A column from the WSJ this week — and if you have any questions for me, you can tweet them to @danariely with the hashtag #askariely, post a comment on my Ask Ariely Facebook page, or email them to AskAriely@wsj.com. ___________________________________________________ Hi, Dan. I offered to purchase a computer...




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[ Yahoo Answers ] Open Question : Nowadays many of legit questions are getting removed without notice. There's no appeal options also. How can I report about these mistakes?

*my legit questions




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Why Women May Be More Susceptible to Mood Disorders

New research in mice suggests that a pregnancy hormone contributes to brain and behavioral changes caused by childhood adversity

-- Read more on ScientificAmerican.com




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Good Options Can Mask Bad Choices

Take a step back from the Republican and Democratic presidential primary races and you will see a sharp difference between the two.




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Legal Migration for Work and Training: Mobility Options to Europe for Those Not in Need of Protection

As EU Member States struggle to deliver on the European Union's call to expand channels for foreign workers, they should focus more on attracting the middle- and low-skilled third-country nationals needed by the labor market yet for whom few opportunities for admission exist. They also would do well to consider their migration policies in light of labor market, foreign policy, and development objectives, rather than as a means to reduce irregular migration, this report cautions.




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Genetic Susceptibility Determines {beta}-Cell Function and Fasting Glycemia Trajectories Throughout Childhood: A 12-Year Cohort Study (EarlyBird 76)

OBJECTIVE

Previous studies suggested that childhood prediabetes may develop prior to obesity and be associated with relative insulin deficiency. We proposed that the insulin-deficient phenotype is genetically determined and tested this hypothesis by longitudinal modeling of insulin and glucose traits with diabetes risk genotypes in the EarlyBird cohort.

RESEARCH DESIGN AND METHODS

EarlyBird is a nonintervention prospective cohort study that recruited 307 healthy U.K. children at 5 years of age and followed them throughout childhood. We genotyped 121 single nucleotide polymorphisms (SNPs) previously associated with diabetes risk, identified in the adult population. Association of SNPs with fasting insulin and glucose and HOMA indices of insulin resistance and β-cell function, available from 5 to 16 years of age, were tested. Association analysis with hormones was performed on selected SNPs.

RESULTS

Several candidate loci influenced the course of glycemic and insulin traits, including rs780094 (GCKR), rs4457053 (ZBED3), rs11257655 (CDC123), rs12779790 (CDC123 and CAMK1D), rs1111875 (HHEX), rs7178572 (HMG20A), rs9787485 (NRG3), and rs1535500 (KCNK16). Some of these SNPs interacted with age, the growth hormone–IGF-1 axis, and adrenal and sex steroid activity.

CONCLUSIONS

The findings that genetic markers influence both elevated and average courses of glycemic traits and β-cell function in children during puberty independently of BMI are a significant step toward early identification of children at risk for diabetes. These findings build on our previous observations that pancreatic β-cell defects predate insulin resistance in the onset of prediabetes. Understanding the mechanisms of interactions among genetic factors, puberty, and weight gain would allow the development of new and earlier disease-management strategies in children.




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Keep Your YouTube Subscriptions in Sync With Inoreader

Did you know you can subscribe to YouTube channels and playlist in Inoreader? Simply paste the URL of the channel…




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Autologous Umbilical Cord Blood Transfusion in Young Children With Type 1 Diabetes Fails to Preserve C-Peptide

OBJECTIVE

We conducted an open-label, phase I study using autologous umbilical cord blood (UCB) infusion to ameliorate type 1 diabetes (T1D). Having previously reported on the first 15 patients reaching 1 year of follow-up, herein we report on the complete cohort after 2 years of follow-up.

RESEARCH DESIGN AND METHODS

A total of 24 T1D patients (median age 5.1 years) received a single intravenous infusion of autologous UCB cells and underwent metabolic and immunologic assessments.

RESULTS

No infusion-related adverse events were observed. β-Cell function declined after UCB infusion. Area under the curve C-peptide was 24.3% of baseline 1 year postinfusion (P < 0.001) and 2% of baseline 2 years after infusion (P < 0.001). Flow cytometry revealed increased regulatory T cells (Tregs) (P = 0.04) and naive Tregs (P = 0.001) 6 and 9 months after infusion, respectively.

CONCLUSIONS

Autologous UCB infusion in children with T1D is safe and induces changes in Treg frequency but fails to preserve C-peptide.




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Forthcoming HOPOS Special Issue on Descriptive Psychology and Völkerpsychologie

Two pieces forthcoming in a special issue of HOPOS, the official journal of the International Society for the History of Philosophy of Science, will be of interest to AHP readers. The special issue, “Descriptive Psychology and Völkerpsychologie—in the Contexts of Historicism, Relativism, and Naturalism,” is guest-edited by Christian Damböck, Uljana Feest, and Martin Kusch. Full details … Continue reading Forthcoming HOPOS Special Issue on Descriptive Psychology and Völkerpsychologie




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The Paradox of Online Dating: Too Many Options Makes It Harder to Invest in a Relationship

In any relationship, you’re bound to discover that your partner has one or two (or maybe ten or twenty) quirks that eventually come to annoy you. In these situations, it's tempting to think that you might be happier with someone else—someone who doesn’t have the same set of peccadillos. However, according to behavioral economist Dr. Dan Ariely, this kind of thinking can set you up for a lifetime of disappointment.




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How to make pandemics optional, not inevitable | Sonia Shah

What can past pandemics teach us how to tackle the current one? Tracing the history of contagions from cholera to Ebola and beyond, science journalist Sonia Shah explains why we're more vulnerable to outbreaks now than ever before, what we can do to minimize the spread of coronavirus and how to prevent future pandemics. (This virtual conversation is part of the TED Connects series, hosted by science curator David Biello and current affairs curator Whitney Pennington Rodgers. Recorded March 31, 2020)




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Given the option, Montana schools choose to remain closed




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Measuring the Impact of Common-Core Test Disruptions in Three States

A Smarter Balanced testing vendor has released completion rates in three states that had serious challenges giving the common-core aligned exam.




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Given the option, Montana schools choose to remain closed




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Given the option, Montana schools choose to remain closed




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Trust Local School Leaders, a State Chief Says as Optional Reopening Date Nears

Montana Superintendent Elsie Arntzen offers practical advice to schools that could open as early as May 7, even as she says "how they open schools and how learning takes place is up to them."




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Adoption of New Science Standards May Start With Rhode Island

Rhode Island may become the first state to adopt the Next Generation Science Standards.




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To make terms of compromise a rule of Court or not? That is the question : an analysis of the options available to settle estate matters / presended by Christina Flourentzou, Supreme Court of South Australia..




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The Baptism of General Butt Naked.




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Troubling ambiguity : governance in SA Health / a report by The Hon. Bruce Lander QC, Independent Commissioner Against Corruption.

"... The report has been prepared for the purpose of highlighting several areas of concern I have about governance arrangements in SA Health that contribute to risks of corruption, misconduct and maladministration...." -- page 4.




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Synergistic genetic biocontrol options for common carp (Cyprinus carpio) / Claus Wedekind.




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Vulnerable private renters : evidence and options / Australian Government Productivity Commission.




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Rewording the brain : how cryptic crosswords can improve your memory and boost the power and agility of your brain / David Astle.

Memory.




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The gospel of climate skepticism : why evangelical Christians oppose action on climate change / Robin Globus Veldman.

Climatic changes -- Effect of human beings on -- Religious aspects -- Christianity.




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Proprioceptive receptor potentials of oscillatory form.

195?




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Description des causes et des effets de la maladie connue sous le nom de diabetes / par M. Pharamond.

Paris : Gabon, 1829.




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Description of an apparatus intended to facilitate the treatment of fractures of the lower extremity / by T.M. Greenhow.

London : S. Highley, 1833.




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Description of an element board and combined handle electrode for the medical application of electricity / by A. Hughes Bennett.

London : H.K. Lewis, 1882.




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Description of an improved apparatus for inhalation of vapour in the cure of diseases / by John Gairdner.

[Edinburgh] : [publisher not identified], [1823]




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A description of the arteries of the human body / by John Barclay.

Edinburgh : T. Bryce, 1812.




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A description of the arteries of the human body. Reduced to tables / by Adolphus Murray ; Translated from the original by Archd. Scott.

Edinburgh : And Bell and Bradfute, and E. Balfour, 1801.




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A description of the diseased conditions of the knee-joint which require amputation of the limb, and those conditions which are favourable to excision of the joint : with an explanation of the relative advantages of both operations as far as can be ascert

London : J. Churchill, 1865.




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A description of the genus Cinchona, comprehending the various species of vegetables from which the Peruvian and other barks of a similar quality are taken. Illustrated by figures of all the species hitherto discovered. To which is prefixed Professor Vahl

London : printed for B. and J. White, 1797.




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Descriptive anatomy of the horse and domestic animals / chiefly compiled from the manuscripts of Thomas Strangeways and Professor Goodsir by J. Wilson Johnston and T.J. Call.

Edinburgh : MacLachlan and Stewart, 1870.




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Descriptive Biochemie : mit besonderer Berücksichtigung der chemischen Arbeitsmethoden / von Sigmund Fränkel.

Wiesbaden : J.F. Bergmann, 1907.




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Descriptive catalogue of the anatomical and pathological museum of the School of Medicine, Park Street, Dublin / by John Houston.

London : Dublin, 1843.




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Descriptive catalogue of the anatomical museum of the Boston society for medical improvement / by J.B.S. Jackson.

Boston : W.D. Ticknor, 1847.




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Descriptive catalogue of the Anatomical Museum of the University of Edinburgh.

Edinburgh : William Whyte, 1829.




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Descriptive catalogue of the museum illustrative of Dr Evory Kennedy's lectures on midwifery, and the diseases of women and children.

[Edinburgh?] : [publisher not identified], 1840.




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Descriptive catalogue of the preparations in the Museum of the Royal College of Surgeons in Ireland / by John Houston.

Edinburgh : Hodges and Smith, 1834-1840.




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A descriptive catalogue of the Warren Anatomical Museum / by J. B. S. Jackson.

Boston : A. Williams, 1870.