Search

Purpose: Early detection of breast cancer-related lymphedema through simple self-monitoring techniques may lead to early treatment and improved outcomes. Methods: Prospective study of circumference measurements at four time points before, during, and after adjuvant chemotherapy with docetaxel, doxorubicin, and cyclophosphamide. Volume was calculated using the 10-cm interval circumference measurement method (reference test) and percentage difference between arms, for volume and circumference, was determined. First, the most valid single measurement location was determined by calculating Pearson's correlation coefficient relative to the reference test. Second, to evaluate the responsiveness to change over four time points, outcomes of the selected single measurement and the reference test were analyzed by repeated-measures ANOVA. Third, area under the curve (AUC) was used to determine the optimal sensitivity and specificity of the selected single measurement site (index test). Relationship between lymphedema (yes/no) and heaviness and swelling (yes/no) was analyzed using phi-coefficient. Results: The measurement point 30 cm proximal to the styloid process showed the highest correlation with percentage difference in total arm volume (r = 0.80) and detected increased percentage difference between arms after treatment. Analyses showed high accuracy (AUC = 0.94; 95% CI 0.90–0.99) and good sensitivity (0.85) and specificity (0.85) using a cutoff score of 4% circumference difference between arms at this location. A moderate correlation between feelings of heaviness and swelling to lymphedema was observed (rφ = 0.64). Conclusions: Circumference difference between arms of 4% measured at 30 cm proximal to the styloid process can be used as a surveillance site for further monitoring of patients at risk for lymphedema and may contribute to early diagnosis. Feelings of heaviness or swelling have moderate relationship with lymphedema, which needs to be confirmed in clinical practice. [ABSTRACT FROM AUTHOR]

Postprandial lipemia can lead to an accumulation of atherogenic lipoproteins in the circulation associated with systemic low-grade inflammation and an increased risk of cardiovascular disease. Lifestyle and pharmacological treatments are usually prescribed for prevention. Vitamin D3 (cholecalciferol), as an anti-atherogenic agent, is being taken into consideration due to its potential beneficial effects in lipid metabolism and its anti-inflammatory potency. To assess the effects of vitamin D3 in the postprandial lipid profile in obese, vitamin D-deficient women, a non-targeted lipidomics approach using liquid chromatography coupled to a quadrupole time-of flight mass spectrometer was used to identify and quantitate a wide-range of circulating lipid species, including diglycerides, lysophosphatidylcholines, phosphatidylcholines, phosphatidylethanolamines, sphingomyelins and triglycerides. The most important changes were found in plasmatic sphingomyelin levels, which experience a decrease after vitamin D3 intake. Our results suggest a turnover of sphingomyelins, probably due to an increased activity of neutral sphingomyelinases, and, therefore, with implications in the clearance of chylomicrons, LDL and VLDL, decreasing postprandial inflammation and macrophage adherence to endothelia, potentially improving cardiovascular disease risk. [ABSTRACT FROM AUTHOR]

Aims/hypothesis: The blood triacylglycerol level is one of the main determinants of blood Mg2+ concentration in individuals with type 2 diabetes. Hypomagnesaemia (blood Mg2+ concentration <0.7 mmol/l) has serious consequences as it increases the risk of developing type 2 diabetes and accelerates progression of the disease. This study aimed to determine the mechanism by which triacylglycerol levels affect blood Mg2+ concentrations.Methods: Using samples from 285 overweight individuals (BMI >27 kg/m2) who participated in the 300-Obesity study (an observational cross-sectional cohort study, as part of the Human Functional Genetics Projects), we investigated the association between serum Mg2+ with laboratory variables, including an extensive lipid profile. In a separate set of studies, hyperlipidaemia was induced in mice and in healthy humans via an oral lipid load, and blood Mg2+, triacylglycerol and NEFA concentrations were measured using colourimetric assays. In vitro, NEFAs harvested from albumin were added in increasing concentrations to several Mg2+-containing solutions to study the direct interaction between Mg2+ and NEFAs.Results: In the cohort of overweight individuals, serum Mg2+ levels were inversely correlated with triacylglycerols incorporated in large VLDL particles (r = −0.159, p ≤ 0.01). After lipid loading, we observed a postprandial increase in plasma triacylglycerol and NEFA levels and a reciprocal reduction in blood Mg2+ concentration both in mice (Δ plasma Mg2+ −0.31 mmol/l at 4 h post oral gavage) and in healthy humans (Δ plasma Mg2+ −0.07 mmol/l at 6 h post lipid intake). Further, in vitro experiments revealed that the decrease in plasma Mg2+ may be explained by direct binding of Mg2+ to NEFAs. Moreover, Mg2+ was found to bind to albumin in a NEFA-dependent manner, evidenced by the fact that Mg2+ did not bind to fatty-acid-free albumin. The NEFA-dependent reduction in the free Mg2+ concentration was not affected by the presence of physiological concentrations of other cations.Conclusions/interpretation: This study shows that elevated NEFA and triacylglycerol levels directly reduce blood Mg2+ levels, in part explaining the high prevalence of hypomagnesaemia in metabolic disorders. We show that blood NEFA level affects the free Mg2+ concentration, and therefore, our data challenge how the fractional excretion of Mg2+ is calculated and interpreted in the clinic. [ABSTRACT FROM AUTHOR]

A 64-year-old male with a history of gout was seen with a swelling of het left acromioclavicular joint. Microscopic examination revealed monosodium urate crystals, confirming the diagnosis of tophaceous gout.

A bstract : Postprandial lipemia can lead to an accumulation of atherogenic lipoproteins in the circulation associated with systemic low-grade inflammation and an increased risk of cardiovascular disease. Lifestyle and pharmacological treatments are usually prescribed for prevention. Vitamin D 3 (cholecalciferol), as an anti-atherogenic agent, is being taken into consideration due to its potential beneficial effects in lipid metabolism and its anti-inflammatory potency. To assess the effects of vitamin D 3 in the postprandial lipid profile in obese, vitamin D-deficient women, a non-targeted lipidomics approach using liquid chromatography coupled to a quadrupole time-of flight mass spectrometer was used to identify and quantitate a wide-range of circulating lipid species, including diglycerides, lysophosphatidylcholines, phosphatidylcholines, phosphatidylethanolamines, sphingomyelins and triglycerides. The most important changes were found in plasmatic sphingomyelin levels, which experience a decrease after vitamin D 3 intake. Our results suggest a turnover of sphingomyelins, probably due to an increased activity of neutral sphingomyelinases, and, therefore, with implications in the clearance of chylomicrons, LDL and VLDL, decreasing postprandial inflammation and macrophage adherence to endothelia, potentially improving cardiovascular disease risk., Competing Interests: Funding: This work was supported by grants to Jorge Joven from the Plan Nacional de I + D + I, Spain, Instituto de Salud Carlos III (PI15/00285 and PI18/00921) co-funded by the European Regional Development Fund (FEDER). We also acknowledge the support of the Fundació la Marató de TV3 and the Agència de Gestió d’Ajuts Universitaris i de Recerca (2017SGR436). Salvador Fernández is currently financed by the Universitat Rovira i Virgili Martí i Franquès grant 2016PMF-POST-02. Financial support was also provided by the Foundation for Research and Development of the Department of Internal Medicine of the Franciscus Gasthuis, Rotterdam, the Netherlands.

Context: Cholecalciferol (vitamin D3) improves vascular function and inflammation, potentially providing an explanation for the proposed cardiovascular protection of vitamin D., Objective: We investigated whether cholecalciferol supplementation reduces postprandial arterial dysfunction and inflammation., Design: Randomized, 1:1, double-blind trial., Setting: Diabetes and Vascular Center, Franciscus Gasthuis, Rotterdam, The Netherlands., Patients: Twenty-four healthy, premenopausal, overweight or obese, vitamin D-deficient women., Interventions: A single high (300,000 IU) or low dose (75,000 IU) of cholecalciferol., Main Outcome Measures: The effect of low- and high-dose cholecalciferol on postprandial leukocyte activation markers, pulse wave velocity (PWV), and augmentation index (AIx) during an oral fat loading test, expressed as area under the curve (AUC)., Results: High- and low-dose supplementation increased vitamin D by 163% ± 134% (P < 0.001) and 66% ± 59% (P < 0.001), respectively. Monocyte CD11b-AUC slightly increased after low but not high dose (6% ± 2%, P = 0.012, and 4% ± 1%, P = 0.339, respectively). There were no significant effects on postprandial PWV or AIx by high- or low-dose vitamin D. Fasting complement component 3 (C3) levels decreased by 5.9% (P = 0.004) in the high-dose group and by 4.0% (P = 0.018) in the low-dose group., Conclusion: A single dose of vitamin D does not seem to reduce arterial stiffness and leukocyte activation in overweight, vitamin D-deficient women. Vitamin D may decrease fasting C3. Possibly, higher vitamin D concentrations may be needed to decrease inflammation and improve vascular function in overweight or obese vitamin D-deficient women., (Copyright © 2017 by the Endocrine Society)