The total body water and the water turnover in pregnancy studied with deuterium oxide as isotopic tracer.
نویسندگان
چکیده
منابع مشابه
Studies of Body Water and Water Turnover Determined with Deuterium Oxide Added to Food.
In 5 dogs which ingested 25 or 50 ml. of D20 with one daily meal, maximal plasma concentrations of tracer were reached in 12-24 hr. The disappearance rate during 14 days was exponential, confirming studies of others in humans. Water turnover, calculated from values obtained for body water and the disappearance rates, agreed well with total water intake, which included water taken as such and th...
متن کاملTritium assay by liquid scintillation spectrometry. Comparison of tritium and deuterium oxides as tracers for body water.
ISIDORE S. EDELMAN, M.D. TO DATE, deuterium oxide (D20) has been the most satisfactory and accurate tracer substance for body water: its diffusion characteristics have been thoroughly studied, and its reliability as a tracer for body water by the dilution technic has been established.' 2 However, the technical difficulty of deuterium analysis by the falling drop method and the labor and expense...
متن کاملOrigin and hydrogeochemical evolution of Azarshahr travertine springs, NW Iran
1-Introduction Travertines are limestones that form where hot groundwaters rich in calcium and bicarbonate emerge at springs. Travertines cover a large area southwest of Azarshahr (East Azarbaijan province), in some parts of which active springs are currently settling travertine. One of the main questions about travertine springs is their origin, as well as the secondary processes that have ch...
متن کاملUse of Urea and Deuterium Oxide to Measure Body Composition'
The use of dilution of urea or deuterium oxide ( D 2 0 ) to estimate body water in cattle, sheep and pigs is reviewed. After equilibration, which requires about 20 min after infusion of urea and 4 to 6 h after infusion of D 2 0 , urea and D , 0 space estimated from dilution in water of blood are each closely related to total body water. Calculation of body composition from total body water can ...
متن کاملHydrogen and Oxygen Stable Isotope Fractionation in Body Fluid Compartments of Dairy Cattle According to Season, Farm, Breed, and Reproductive Stage
Environmental temperature affects water turnover and isotope fractionation by causing water evaporation from the body in mammals. This may lead to rearrangement of the water stable isotope equilibrium in body fluids. We propose an approach to detect possible variations in the isotope ratio in different body fluids on the basis of different homoeothermic adaptations in varying reproductive stage...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- The Journal of clinical investigation
دوره 33 2 شماره
صفحات -
تاریخ انتشار 1954