Metabolic scaling law for fetus and placenta.

نویسندگان

  • C M Salafia
  • M Yampolsky
چکیده

The human fetal birth weight does not scale linearly with the weight of the placenta, but exhibits an allometric scaling consistent with Kleiber's Law for the basal metabolic rate. We discuss the possible causes of such scaling, and its clinical consequences. In particular, we show that the value of the scaling exponent is an indicator of a normal fetoplacental development.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Allometric metabolic scaling and fetal and placental weight.

BACKGROUND We tested the hypothesis that the fetal-placental relationship scales allometrically and identified modifying factors of that relationship. MATERIALS AND METHODS Among women delivering after 34 weeks but prior to 43 weeks' gestation, 24,601 participants in the Collaborative Perinatal Project (CPP) had complete data for placental gross proportion measures, specifically, placental we...

متن کامل

Ultrasonographic Evaluation of Placenta Thickness and Fetal Cord Cross Section in Gestational Diabetes Mothers Compared to Control Group

Background The metabolic enhancement resulted from hyperglycemia in gestational diabetes leads to macrosomia, which can affect the placenta. In gestational diabetes mellitus (GDM) pregnant women, the thickness of placenta and cord diameter can change at ages prior to treatment initiation. Therefore, this study was conducted to examine the thickness of placenta an...

متن کامل

P-146: Toxoplasmosis: Experimental Vaginal Infection in NMRI Mice and Effect on Uterin,Placenta and Fetus Tissues

Background: Toxoplasma gondii is an important zoonotic pathogen. Vertical transmission of the parasite occurs when females were infected primarily during gestation. This parasite transmitted to the fetus through the placenta and may cause miscarriage, permanent neurological damage, premature birth and visual impairment. Materials and Methods: Two 6-8-week NMRI females mice were crossed with one...

متن کامل

THE SCALING LAW FOR THE DISCRETE KINETIC GROWTH PERCOLATION MODEL

The Scaling Law for the Discrete Kinetic Growth Percolation Model The critical exponent of the total number of finite clusters α is calculated directly without using scaling hypothesis both below and above the percolation threshold pc based on a kinetic growth percolation model in two and three dimensions. Simultaneously, we can calculate other critical exponents β and γ, and show that the scal...

متن کامل

Energy and substrate requirements of the placenta and fetus.

The exchange of nutrients between placenta and fetus involves three major mechanisms: (1) direct placental transfer of nutrients from the maternal to the fetal plasma, (2) placental metabolism and consumption of nutrients, (3) placental metabolism of nutrient substrates to alternate substrate forms. Additionally, placental size, architecture, developmental and pathological processes, and intera...

متن کامل

ذخیره 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 نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Placenta

دوره 30 5  شماره 

صفحات  -

تاریخ انتشار 2009