St Petersburg is undoubtedly one of the most picturesque cities in the world – from its European-inspired architecture, its signature colourful, eclectic-style to its neoclassical and Baroque style to its water corridors, and the art, the city is a...

Insulin-mediated microvascular recruitment (IMVR) regulates delivery of insulin and glucose to insulin-sensitive tissues. We have previously proposed that perivascular adipose tissue (PVAT) controls vascular function through outside-to-inside communication and through vessel-to-vessel, or "vasocrine," signaling. However, direct experimental evidence supporting a role of local PVAT in regulating IMVR and insulin sensitivity in vivo is lacking. Here, we studied muscles with and without PVAT in mice using combined contrast-enhanced ultrasonography and intravital microscopy to measure IMVR and gracilis artery diameter at baseline and during the hyperinsulinemic-euglycemic clamp. We show, using microsurgical removal of PVAT from the muscle microcirculation, that local PVAT depots regulate insulin-stimulated muscle perfusion and glucose uptake in vivo. We discovered direct microvascular connections between PVAT and the distal muscle microcirculation, or adipomuscular arterioles, the removal of which abolished IMVR. Local removal of intramuscular PVAT altered protein clusters in the connected muscle, including upregulation of a cluster featuring Hsp90ab1 and Hsp70 and downregulation of a cluster of mitochondrial protein components of complexes III, IV, and V. These data highlight the importance of PVAT in vascular and metabolic physiology and are likely relevant for obesity and diabetes.

Reduced storage of dietary fatty acids (DFAs) in abdominal adipose tissues with enhanced cardiac partitioning has been shown in subjects with type 2 diabetes (T2D) and prediabetes. We measured DFA metabolism and organ partitioning using positron emission tomography with oral and intravenous long-chain fatty acid and glucose tracers during a standard liquid meal in 12 obese subjects with T2D before and 8–12 days after bariatric surgery (sleeve gastrectomy or sleeve gastrectomy and biliopancreatic diversion with duodenal switch). Bariatric surgery reduced cardiac DFA uptake from a median (standard uptake value [SUV]) 1.75 (interquartile range 1.39–2.57) before to 1.09 (1.04–1.53) after surgery (P = 0.01) and systemic DFA spillover from 56.7 mmol before to 24.7 mmol over 6 h after meal intake after surgery (P = 0.01), with a significant increase in intra-abdominal adipose tissue DFA uptake from 0.15 (0.04–0.31] before to 0.49 (0.20–0.59) SUV after surgery (P = 0.008). Hepatic insulin resistance was significantly reduced in close association with increased DFA storage in intra-abdominal adipose tissues (r = –0.79, P = 0.05) and reduced DFA spillover (r = 0.76, P = 0.01). We conclude that bariatric surgery in subjects with T2D rapidly reduces cardiac DFA partitioning and hepatic insulin resistance at least in part through increased intra-abdominal DFA storage and reduced spillover.

19 December 2014

This research paper sets out recommendations for enhanced dialogue and intensified international cooperation that could significantly improve the functioning of global mineral markets.

Most Major League teams still use a five-man starting rotation, but it takes a lot more pitchers than that to make it through a 162-game season. It certainly helps to have a potent one-two punch at the top of the rotation.

Ketel Marte does not lack for confidence when it comes to switching from second base/shortstop to center field, which is where he's expected to see a lot of time this season.

Inflammation contributes to ventricular remodeling after myocardial ischemia, but its role in nonischemic heart failure is poorly understood. Local tissue inflammation is difficult to assess serially during pathogenesis. Although ¹⁸F-FDG accumulates in inflammatory leukocytes and thus may identify inflammation in the myocardial microenvironment, it remains unclear whether this imaging technique can isolate diffuse leukocytes in pressure-overload heart failure. We aimed to evaluate whether inflammation with ¹⁸F-FDG can be serially imaged in the early stages of pressure-overload–induced heart failure and to compare the time course with functional impairment assessed by cardiac MRI. Methods: C57Bl6/N mice underwent transverse aortic constriction (TAC) (n = 22), sham surgery (n = 12), or coronary ligation as an inflammation-positive control (n = 5). MRI assessed ventricular geometry and contractile function at 2 and 8 d after TAC. Immunostaining identified the extent of inflammatory leukocyte infiltration early in pressure overload. ¹⁸F-FDG PET scans were acquired at 3 and 7 d after TAC, under ketamine-xylazine anesthesia to suppress cardiomyocyte glucose uptake. Results: Pressure overload evoked rapid left ventricular dilation compared with sham (end-systolic volume, day 2: 40.6 ± 10.2 μL vs. 23.8 ± 1.7 μL, P < 0.001). Contractile function was similarly impaired (ejection fraction, day 2: 40.9% ± 9.7% vs. 59.2% ± 4.4%, P < 0.001). The severity of contractile impairment was proportional to histology-defined myocardial macrophage density on day 8 (r = –0.669, P = 0.010). PET imaging identified significantly higher left ventricular ¹⁸F-FDG accumulation in TAC mice than in sham mice on day 3 (10.5 ± 4.1 percentage injected dose [%ID]/g vs. 3.8 ± 0.9 %ID/g, P < 0.001) and on day 7 (7.8 ± 3.7 %ID/g vs. 3.0 ± 0.8 %ID/g, P = 0.006), though the efficiency of cardiomyocyte suppression was variable among TAC mice. The ¹⁸F-FDG signal correlated with ejection fraction (r = –0.75, P = 0.01) and ventricular volume (r = 0.75, P < 0.01). Western immunoblotting demonstrated a 60% elevation of myocardial glucose transporter 4 expression in the left ventricle at 8 d after TAC, indicating altered glucose metabolism. Conclusion: TAC induces rapid changes in left ventricular geometry and contractile function, with a parallel modest infiltration of inflammatory macrophages. Metabolic remodeling overshadows inflammatory leukocyte signal using ¹⁸F-FDG PET imaging. More selective inflammatory tracers are requisite to identify the diffuse local inflammation in pressure overload.

 British Caribbean Insurance Company Limited, BCIC, will refund a portion of April’s premium to holders of its public passenger vehicle, PPV, and Diamond Max private motor insurance next week. The move, which is expected to cost BCIC...

OP-ED CONTRIBUTION: COVID-19 AND THE ECONOMY FOR MOST countries in the Caribbean, the current testing for COVID-19 has not reached levels suitable for ascertaining an accurate picture of the state of outbreak and spread of the infection. This...

19 December 2019

This MPI Europe webinar examines innovative ways to better design and implement predeparture orientation programs for resetttling refugees. The discussion features observations from a refugee who went through an orientation program before being resettled in the Netherlands, and a resettlement agency official in Norway.

What President Trump calls a border crisis is in fact a crisis in the asylum system—one worsened at every turn by his administration’s harsh policies and rhetoric. Rather than spend $5.7 billion on a wall, it would be far more effective to use the money to retool an overwhelmed asylum system, adapt outmatched border enforcement infrastructure to respond to the changing composition of arrivals, and work cooperatively with Mexico to tackle the factors propelling Central Americans to flee.

The immigrant population in the Kansas City region has grown rapidly over the past 25 years, contributing to overall population growth in the area. This fact sheet describes immigrants in the metro area, examining their origins, industries of employment, income and poverty levels, English proficiency, educational attainment, and more.

This report analyzes the exploitation of migrants in three spheres: the domestic care sector, the labor market, and the sex industry. It details several obstacles governments face in their efforts to weaken the "bad actors" that profit from exploitation, and shows how one of the biggest challenges facing law enforcement is that serious criminals and lawbreakers often operate on the edge of legality and exploit legal routes wherever possible.

As policymakers look for ways to address the drivers of illegal immigration, many have called for migration aims to be incorporated into development work and development tools into migration partnerships. This policy brief analyzes the benefits and risks of heightened cooperation between actors in these fields, and identifies areas where joint initiatives may prove fruitful.

While partnerships to facilitate skilled migration have had mixed success in the past, the Global Compact for Migration is advancing a new approach that may change this. This policy brief compares this new partnership model with the traditional one, highlighting the questions policymakers will need to answer if they are to encourage mobility, sustain employer engagement, and see development benefits in countries of origin.

OBJECTIVE

Dysglycemia, in this survey defined as impaired glucose tolerance (IGT) or type 2 diabetes, is common in patients with coronary artery disease (CAD) and associated with an unfavorable prognosis. This European survey investigated dysglycemia screening and risk factor management of patients with CAD in relation to standards of European guidelines for cardiovascular subjects.

By: Matt Stamps, Yale-NUS College When Yale-NUS College reviewed the curriculum for its Mathematical, Computational, and Statistical (MCS) Sciences major in the autumn of 2018, I spent several weeks reading about mathematics programs at similar institutions.  A common learning objective … Continue reading →

Dalton signed with the Cowboys on Monday after he was released May 30. Dak Prescott has started every game for the Cowboys since 2016.

Joseph Tran
Oct 1, 2012; 30:173-178
Practical Pointers

Candace D. McNaughton
Apr 1, 2011; 29:51-59
Feature Articles

OBJECTIVE

To compare medical resource use, costs, and health utilities for 14,752 patients with type 2 diabetes who were randomized to once-weekly exenatide (EQW) or placebo in addition to usual diabetes care in the Exenatide Study of Cardiovascular Event Lowering (EXSCEL).

Boris P. Kovatchev
Jul 1, 2013; 36:1851-1858
Diabetes Care Symposium

Caroline S. Fox
Sep 1, 2015; 38:1777-1803
Scientific Statement

Sarah D. de Ferranti
Oct 1, 2014; 37:2843-2863
Scientific Statement

Kalevi Pyörälä
Mar 1, 1979; 2:131-141
Proceedings of the Kroc Foundation International Conference on Epidemiology of Diabetes and its Macrovascular Complications

T A Welborn
Mar 1, 1979; 2:154-160
Proceedings of the Kroc Foundation International Conference on Epidemiology of Diabetes and its Macrovascular Complications

American Diabetes Association
Sep 1, 1998; 21:1551-1559
Consensus Development Conference Report

A Google-related company has pulled the plug on its ambitious high-tech waterfront city project in Toronto, citing financial strains from the coronavirus, but the project had also run into local opposition.

At least two people died and more than a dozen were hurt Friday when a moderate earthquake struck in Iran's northern city of Damavand, near Tehran.

Northrop Grumman Corp. and Raytheon Missiles and Defense will partner to develop the Defense Department's next missile interceptor, they announced on Monday.

The Department of Defense announced this week that effective Aug. 1, retailers on U.S. military installations and bases will no longer sell tobacco products to anyone under the age of 21, including service members.

Sarah D. de Ferranti
Oct 1, 2014; 37:2843-2863
Scientific Statement

Gregory G. Schwartz
May 1, 2020; 43:1077-1084
Emerging Therapies: Drugs and Regimens

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.

Those interested in developing dental standards that ensure product safety and efficacy and offer useful information on new and emerging technologies can attend upcoming meetings of the American Dental Association's standards committees.

Following a ruling in federal court two days prior, the Department of Health and Human Services announced Jan. 25 that the Health Insurance Portability and Accountability Act Privacy Rule fee limitations do not apply to requests to transmit copies of records to third-parties.

Dr. Martin Nweeia began researching narwhals in 2000. He came to the conclusion that the prevailing research available about the narwhal’s tooth — such as Charles Darwin’s belief that the narwhal’s tooth was a secondary sexual characteristic like an antler or a horn — was only part of the story.

The ADA, along with a large group of other dental organizations, told the U.S. Department of Labor that they are concerned about provisions in HR 6201, the Families First Coronavirus Response Act as related to family and medical leave and paid sick leave.

Employers with fewer than 50 employees, including dental practices, may be exempt from a provision in the Families First Coronavirus Response Act that requires them to provide emergency paid sick leave and expanded medical leave to employees in certain COVID-19 circumstances, the Department of Labor said April 1.

The Association continues to wait for clear guidance from the U.S. Department of Treasury and Small Business Administration on the best way to help dentists considering applying for Paycheck Protection Program 7(a) loans and Economic Injury Disaster Loans.