71 research outputs found
Intérêt de l’évaluation de l’habilité en fauteuil roulant manuel chez les personnes en situation d’handicap
Indices of insulin sensitivity and secretion from a standard liquid meal test in subjects with type 2 diabetes, impaired or normal fasting glucose
<p>Abstract</p> <p>Background</p> <p>To provide an initial evaluation of insulin sensitivity and secretion indices derived from a standard liquid meal tolerance test protocol in subjects with normal (NFG), impaired fasting glucose (IFG) or type 2 diabetes mellitus.</p> <p>Methods</p> <p>Areas under the curve (AUC) for glucose, insulin and C-peptide from pre-meal to 120 min after consumption of a liquid meal were calculated, as were homeostasis model assessments of insulin resistance (HOMA2-IR) and the Matsuda index of insulin sensitivity.</p> <p>Results</p> <p>Subjects with NFG (n = 19), IFG (n = 19), and diabetes (n = 35) had mean ± SEM HOMA2-IR values of 1.0 ± 0.1, 1.6 ± 0.2 and 2.5 ± 0.3 and Matsuda insulin sensitivity index values of 15.6 ± 2.0, 8.8 ± 1.2 and 6.0 ± 0.6, respectively. The log-transformed values for these variables were highly correlated overall and within each fasting glucose category (r = -0.91 to -0.94, all p < 0.001). Values for the product of the insulin/glucose AUC ratio and the Matsuda index, an indicator of the ability of the pancreas to match insulin secretion to the degree of insulin resistance, were 995.6 ± 80.7 (NFG), 684.0 ± 57.3 (IFG) and 188.3 ± 16.1 (diabetes) and discriminated significantly between fasting glucose categories (p < 0.001 for each comparison).</p> <p>Conclusion</p> <p>These results provide initial evidence to support the usefulness of a standard liquid meal tolerance test for evaluation of insulin secretion and sensitivity in clinical and population studies.</p
Microbial Dysbiosis in Colorectal Cancer (CRC) Patients
The composition of the human intestinal microbiota is linked to health status. The aim was to analyze the microbiota of normal and colon cancer patients in order to establish cancer-related dysbiosis
Le coût glucidique du watt sur ergocycle : une constante biologique ?
Approche du métabolisme énergétique à l'exercice par calorimétrie d'effort à quatre paliers de 6 minutes chacun : l'incrémentation du débit d'oxydation des glucides lors de l'exercice physique ramenée à l'unité de puissance est-elle un paramètre reproductible
Photoluminescence study of nitrogen effects on confined states in GaAs
Modulation doped heterostructures
GaAs/GaAsNx/GaAs/Al0.3Ga0.7As:δSi
with GaAsNx Quantum Wells (QW) with different nitrogen
contents x have been grown by molecular beam epitaxy and investigated by
photoluminescence (PL) spectroscopy. We have found that at low temperature
the photoluminescence spectra are essentially formed by two structures
observed at 1.51 eV and 1.47 eV attributed to excitonic transitions in GaAs
layer, and in GaAsNx QW, respectively. The Band
Anticrossing Model (BAC) has been adopted in order to confirm the nature of
the transitions in GaAsNx QW's. The band structure of
-doped
GaAs/GaAsNx/GaAs/Al0.3Ga0.7As:δSi has
been studied theoretically by using the finite differences method to
self-consistently and simultaneously solve Schrödinger and Poisson
equations written within the Hartree approximation. We find in this way good
agreement between our measured and our calculated values for the transition
energies in our GaAsNx QW's
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