scholarly journals Penetration of ertapenem into skeletal muscle and subcutaneous adipose tissue in healthy volunteers measured by in vivo microdialysis

2006 ◽  
Vol 58 (3) ◽  
pp. 632-636 ◽  
Author(s):  
O. Burkhardt
Keyword(s):  
Skeletal Muscle ◽  
Adipose Tissue ◽  
Healthy Volunteers ◽  
Subcutaneous Adipose Tissue ◽  
In Vivo Microdialysis ◽  
Subcutaneous Adipose

Cadaver validation of skeletal muscle measurement by magnetic resonance imaging and computerized tomography

1998 ◽  
Vol 85 (1) ◽  
pp. 115-122 ◽  
Author(s):  
N. Mitsiopoulos ◽  
R. N. Baumgartner ◽  
S. B. Heymsfield ◽  
W. Lyons ◽  
D. Gallagher ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Skeletal Muscle ◽  
Adipose Tissue ◽  
Magnetic Resonance ◽  
Computerized Tomography ◽  
Subcutaneous Adipose Tissue ◽  
Resonance Imaging ◽  
Reference Methods ◽  
Subcutaneous Adipose

Magnetic resonance imaging (MRI) and computerized tomography (CT) are promising reference methods for quantifying whole body and regional skeletal muscle mass. Earlier MRI and CT validation studies used data-acquisition techniques and data-analysis procedures now outdated, evaluated anatomic rather than adipose tissue-free skeletal muscle (ATFSM), studied only the relatively large thigh, or found unduly large estimation errors. The aim of the present study was to compare arm and leg ATFSM cross-sectional area estimates (cm2) by using standard MRI and CT acquisition and image-analysis methods with corresponding cadaver estimates. A second objective was to validate MRI and CT measurements of adipose tissue embedded within muscle (interstitial adipose tissue) and surrounding muscle (subcutaneous adipose tissue). ATFSM area ( n = 119) by MRI [38.9 ± 22.3 (SD) cm2], CT (39.7 ± 22.8 cm2), and cadaver (39.5 ± 23.0 cm2) were not different ( P > 0.001), and both MRI and CT estimates of ATFSM were highly correlated with corresponding cadaver values [MRI: r = 0.99, SE of estimate (SEE) 3.9 cm2, P < 0.001; and CT: r = 0.99, SEE = 3.8 cm2, P < 0.001]. Similarly good results were observed between MRI- and CT-measured vs. cadaver-measured interstitial and subcutaneous adipose tissue. For MRI-ATFSM the intraobserver correlation for duplicate measurements in vivo was 0.99 [SEE = 8.7 cm2(2.9%), P < 0.001]. These findings strongly support the use of MRI and CT as reference methods for appendicular skeletal muscle, interstitial and subcutaneous adipose tissue measurement in vivo.

Leptin concentrations in the abdominal subcutaneous adipose tissue of patients with anorexia nervosa assessed by in vivo microdialysis

2005 ◽  
Vol 128 (1) ◽  
pp. 63-68 ◽  
Author(s):  
Ivana Dostálová ◽  
Vojtěch Kopský ◽  
Jaroslava Dušková ◽  
Hana Papežová ◽  
Karel Pacák ◽  
...  
Keyword(s):  
Adipose Tissue ◽  
Anorexia Nervosa ◽  
Subcutaneous Adipose Tissue ◽  
In Vivo Microdialysis ◽  
Subcutaneous Adipose

scholarly journals Penetration of Doripenem into Skeletal Muscle and Subcutaneous Adipose Tissue in Healthy Volunteers

2011 ◽  
Vol 56 (1) ◽  
pp. 532-535 ◽  
Author(s):  
Bernhard Burian ◽  
Markus Zeitlinger ◽  
Oliver Donath ◽  
Gottfried Reznicek ◽  
Robert Sauermann
Keyword(s):  
Skeletal Muscle ◽  
Antimicrobial Activity ◽  
Adipose Tissue ◽  
Subcutaneous Adipose Tissue ◽  
Soft Tissues ◽  
Time Curve ◽  
Bacterial Killing ◽  
Drug Concentrations ◽  
Subcutaneous Adipose

ABSTRACTSufficient antibiotic concentrations at the infection site are a prerequisite for good bacterial killing. This study was performed to determine pharmacokinetics of doripenem in soft tissues and saliva. Six healthy male volunteers received a single intravenous infusion of 500 mg doripenem over 1 h. The concentrations of doripenem were measured over 8 h in saliva, plasma, and extracellular space fluid of skeletal muscle and subcutaneous adipose tissue employingin vivomicrodialysis. Unbound drug concentrations were determined using ultra-high-performance liquid chromatography-tandem mass spectrometry. Maximum concentrations of doripenem were 15.3 ± 6.0 mg/liter in plasma, 9.9 ± 2.3 mg/liter in subcutaneous adipose tissue, 6.6 ± 2.9 mg/liter in skeletal muscle, and 0.5 ± 0.2 mg/liter in saliva. Areas under the concentration-time curve (AUC) from 0 to infinity were 26.3 ± 10.1, 20.4 ± 3.8, 12.8 ± 3.0, and 1.0 ± 0.5 mg · h/liter in plasma, adipose tissue, skeletal muscle, and saliva, respectively. Ratios of AUC in adipose tissue, skeletal muscle, and saliva to those in plasma were 0.84 ± 0.28, 0.53 ± 0.19, and 0.04 ± 0.03, respectively. In all six volunteers, a threshold of ≥40% for “time above MIC,” an index indicative of good antimicrobial activity, was exceeded in adipose tissue for MICs of ≤2 mg/liter and in skeletal muscle for MICs ≤1.5 mg/liter. Doripenem penetrates well into interstitial space fluid of skeletal muscle and adipose tissue, suggesting good antimicrobial activity in infected soft tissues, whereas it is detectable in relatively low concentrations in saliva.

METABOLISM IN ADIPOSE TISSUE AND MUSCLE OF THE YOUNG PIG

1990 ◽  
Vol 70 (1) ◽  
pp. 199-206 ◽  
Author(s):  
O. ADEOLA ◽  
B. W. McBRIDE ◽  
R. O. BALL ◽  
L. G. YOUNG
Keyword(s):  
Skeletal Muscle ◽  
Protein Synthesis ◽  
Adipose Tissue ◽  
Key Words ◽  
Adenosine Deaminase ◽  
Subcutaneous Adipose Tissue ◽  
Muscle Metabolism ◽  
Acetate Incorporation ◽  
Glycerol Release ◽  
Subcutaneous Adipose

Subcutaneous adipose tissue and intercostal and sartorius muscles from five barrows and five gilts at 20 kg liveweight were used to study lipogenesis, lipolysis, Na+, K+-ATPase-dependent respiration and protein synthesis. Lipogenesis rate measured by 14C-acetate incorporation into lipid was similar between barrows and gilts; and 100 μg insulin per mL enhanced (P < 0.1) subcutaneous adipose tissue lipogenesis by 74%. Lipolysis rate quantitated by glycerol release was similar between barrows and gilts (3546 and 4160 nmol g−1 2 h−1). Adenosine deaminase and norepinephrine together enhanced adipose tissue lipolytic response by 102%. Fractional and absolute rates of protein synthesis were similar between barrows and gilts (3.24 and 3.69% d−1; 6.01 and 6.06 mg g−1 d−1); and between intercostal and sartorius muscles. Barrows had lower Na+, K+-ATPase-dependent respiration than gilts and the maintenance of Na+ and K+ transmembrane ionic gradient in the muscle preparations accounted for 23–26% of total respiration. Key words: Pigs, adipose tissue, skeletal muscle, metabolism

The use of microdialysis to characterize the endocrine production of human subcutaneous adipose tissue in vivo

2009 ◽  
Vol 155 (1-3) ◽  
pp. 156-162 ◽  
Author(s):  
Ivana Dostálová ◽  
Petra Kaválková ◽  
Denisa Haluzíková ◽  
Jitka Housová ◽  
Martin Matoulek ◽  
...  
Keyword(s):  
Adipose Tissue ◽  
Subcutaneous Adipose Tissue ◽  
Subcutaneous Adipose

Thermogenic response to epinephrine in the forearm and abdominal subcutaneous adipose tissue

1992 ◽  
Vol 263 (5) ◽  
pp. E850-E855 ◽  
Author(s):  
L. Simonsen ◽  
J. Bulow ◽  
J. Madsen ◽  
N. J. Christensen
Keyword(s):  
Skeletal Muscle ◽  
Adipose Tissue ◽  
Energy Expenditure ◽  
Oxygen Uptake ◽  
Glucose Uptake ◽  
Subcutaneous Adipose Tissue ◽  
Whole Body ◽  
Epinephrine Infusion ◽  
Basal Period ◽  
Subcutaneous Adipose

Whole body energy expenditure, thermogenic and metabolic changes in the forearm, and intercellular glucose concentrations in subcutaneous adipose tissue on the abdomen determined by microdialysis were measured during epinephrine infusion in healthy subjects. After a control period, epinephrine was infused at rates of 0.2 and 0.4 nmol.kg-1 x min-1. Whole body resting energy expenditure was 4.36 +/- 0.56 (SD) kJ/min. Energy expenditure increased to 5.14 +/- 0.74 and 5.46 +/- 0.79 kJ/min, respectively (P < 0.001), during the epinephrine infusions. Respiratory exchange ratio was 0.80 +/- 0.04 in the resting state and did not change. Local forearm oxygen uptake was 3.9 +/- 1.3 mumol.100 g-1 x min-1 in the basal period. During epinephrine infusion, it increased to 5.8 +/- 2.1 (P < 0.03) and 7.5 +/- 2.3 mumol.100 g-1 x min-1 (P < 0.001). Local forearm glucose uptake was 0.160 +/- 0.105 mumol.100 g-1 x min-1 and increased to 0.586 +/- 0.445 and 0.760 +/- 0.534 mumol.100 g-1 x min-1 (P < 0.025). The intercellular glucose concentration in the subcutaneous adipose tissue on the abdomen was equal to the arterial concentration in the basal period but did not increase as much during infusion of epinephrine, indicating glucose uptake in adipose tissue in this condition. If it is assumed that forearm skeletal muscle is representative for the average skeletal muscle, it can be calculated that on average 40% of the enhanced whole body oxygen uptake induced by infusion of epinephrine is taking place in skeletal muscle. It is proposed that adipose tissue may contribute to epinephrine-induced thermogenesis.

scholarly journals Continuous Glucose Monitoring in Interstitial Subcutaneous Adipose Tissue and Skeletal Muscle Reflects Excursions in Cerebral Cortex

Diabetes ◽  
2005 ◽  
Vol 54 (6) ◽  
pp. 1635-1639 ◽  
Author(s):  
J. K. Nielsen ◽  
C. B. Djurhuus ◽  
C. H. Gravholt ◽  
A. C. Carus ◽  
J. Granild-Jensen ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Adipose Tissue ◽  
Cerebral Cortex ◽  
Continuous Glucose Monitoring ◽  
Subcutaneous Adipose Tissue ◽  
Glucose Monitoring ◽  
Subcutaneous Adipose
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