搜索结果: 1-13 共查到“医学 stable isotope”相关记录13条 . 查询时间(0.078 秒)
The effects of fat loss after bariatric surgery on inflammation, serum hepcidin, and iron absorption: a prospective 6-mo iron stable isotope study
obesity iron deficiency iron absorption hepcidin inflammation stable isotopes
2018/12/18
Background: Iron deficiency is common in obese subjects. This may be due to an increase in serum hepcidin and a decrease in iron absorption from adiposity-related inflammation.
System for High Throughput Water Extraction from Soil Material for Stable Isotope Analysis of Water
Isotope Vacuum Distillation Soil
2013/1/29
A major limitation in the use of stable isotope of water in ecological studies is the time that is required to extract water from soil and plant samples. Using vacuum distillation the extraction time ...
STABLE ISOTOPE ECOLOGY OF ALASKAN SOCKEYE SALMON LAKES
feeding Methods animal sockeye salmon
2009/5/6
Stable isotope ratios of carbon and nitrogen (expressed as S^C and WN)are used in food web studies to trace sources of these elements when sources differ in their natural stable isotope abundance. I...
Carotene-rich plant foods ingested with minimal dietary fat enhance the total-body vitamin A pool size in Filipino schoolchildren as assessed by stable-isotope-dilution methodology
Vitamin A deuterated-retinol dilution stable-isotope dilution retinol plant carotenoids ß -carotene bioavailability
2008/12/12
Background:Strategies for improving the vitamin A status of vulnerable populations are needed.Objective:We studied the influence of the amounts of dietary fat on the effectiveness of carotene-rich pla...
Production of stable-isotope-labeled bovine heme and its use to measure heme-iron absorption in children1,2,3,4
Iron absorption zinc absorption heme iron stable isotope children
2008/12/11
Background: The use of stable isotopes has provided valuable insights into iron absorption in humans, but the data have been limited to nonheme iron. Objective: Our objectives were to produce heme iro...
Use of stable-isotope techniques to validate infant feeding practices reported by Bangladeshi women receiving breastfeeding counseling1,2,3
Human milk breastfeeding Bangladesh deuterium dilution
2008/12/9
Background:The World Health Organization recommends exclusive breastfeeding until age 6 mo. Studies relying on mothers' self-reported behaviors have shown that lactation counseling increases both the ...
Dietary inulin intake and age can significantly affect intestinal absorption of calcium and magnesium in rats: a stable isotope approach
calcium magnesium rats
2008/4/23
previous studies have shown that non-digestible inulin-type fructan intake can increase intestinal mineral absorption in both humans and animals. However, this stimulatory effect on intestinal absorpt...
Comparison of stable-isotope-tracer methods for the determination of magnesium absorption in humans
double-labeling methods dysprosium Magnesium absorption
2016/12/30
The double-labeling (DL) method for determining magnesium absorption is less cumbersome than is the fecal monitoring method, which has been used most often, but it has not been validated.
Vitamin A equivalence of spirulina β-carotene in Chinese adults as assessed by using a stable-isotope reference method
Vitamin A β-carotene
2016/12/30
In a group of well-nourished, normal-weight Chinese men following low-vitamin A diets, 4.5 mg spirulina β-carotene consumed with 22 g fat has the same vitamin A activity as does 1 mg retinyl acetate.
Urea-nitrogen production and salvage are modulated by protein intake in fed humans: results of an oral stable-isotope-tracer protocol and compartmental modeling
stable-isotope-tracer protocol compartmental modeling
2016/12/30
The influence of protein source on postprandial urea kinetics is poorly understood, despite its nutritional significance with respect to nitrogen homeostasis. Furthermore, traditional tracer infusion ...
Effect of short-chain fructooligosaccharides on intestinal calcium absorption and calcium status in postmenopausal women: a stable-isotope study
intestinal absorption calcium stable isotopes
2016/12/29
An enhancing effect of short-chain fructooligosaccharides (scFOSs) on intestinal calcium absorption has been shown in animals and in some short-term human studies. However, the long-term effect of scF...
A novel dual radio- and stable-isotope method for measuring calcium absorption in humans: comparison with the whole-body radioisotope retention method
Calcium absorption radioisotopes 47Ca
2016/12/29
The objective was to compare a dual-isotope method combining radioisotopes and stable isotopes with a whole-body radioisotope retention method for measuring calcium absorption.
Short-term (intestinal) and long-term (postintestinal) conversion of β-carotene to retinol in adults as assessed by a stable-isotope reference method
retinol equivalence stable isotope mass spectrometry
2017/1/3
The quantitative determination of the conversion of β-carotene to vitamin A in humans can be accomplished by using a stable-isotope reference method. This approach provides in vivo metabolic informati...