Metabolomics Workbench : NIH Data Repository

MB Sample ID: SA123774

Local Sample ID:	568
Subject ID:	SU001522
Subject Type:	Mammal
Subject Species:	Ovis aries
Taxonomy ID:	9940

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Subject:

Subject ID:	SU001522
Subject Type:	Mammal
Subject Species:	Ovis aries
Taxonomy ID:	9940

Factors:

Local Sample ID	MB Sample ID	Factor Level ID	Level Value	Factor Name
568	SA123774	FL014989	Control	Treatment
568	SA123774	FL014989	Female	Sex

Collection:

Collection ID:	CO001517
Collection Summary:	Placentomes were collected at necropsy from control ewes and ewes treated with cortisol (CORT: 1mg/kg/d from day 115 of pregnancy) at days 141-144 of gestation. CORT ewes received an intravenous infusion of cortisol (Solu-Cortef, hydrocortisone sodium succinate in sodium phosphate; Pfizer, New York, NY); control animals did not receive any treatment. Animals were sacrificed for collection of tissues at the first signs of labor, as evidenced by changes in uterine blood flow; placentomes were collected from sheep in early stages of labor at between 141-144 days and 142-144 days of gestation in the cortisol-treated and control groups, respectively. In this cohort of ewes, there were 7 control ewes, of which data were collected from placentomes of 7 live fetuses (including one set of twins); there was one lamb born, and that placenta was not collected. In this cohort there were 11 cortisol- treated ewes, from which we collected placentomes from 5 live fetuses. There was one live lamb born, and 5 stillborn lambs, from which placentas were not collected. Placentomes were classified as A-D placentomes, snap frozen in liquid nitrogen, and stored in -80C until metabolomic analysis.
Sample Type:	Placenta

Treatment:

Treatment ID:	TR001537
Treatment Summary:	Placentomes were collected at necropsy from control ewes and ewes treated with cortisol (CORT: 1mg/kg/d from day 115 of pregnancy) at days 141-144 of gestation. CORT ewes received an intravenous infusion of cortisol (Solu-Cortef, hydrocortisone sodium succinate in sodium phosphate; Pfizer, New York, NY); control animals did not receive any treatment.

Sample Preparation:

Sampleprep ID:	SP001530
Sampleprep Summary:	High-resolution magic angle spinning (HR-MAS) proton nuclear magnetic resonance (1H-NMR) was used to determine metabolites present in placental tissue. Briefly, 30 μL of deuterium oxide (D2O) with 3.3 mM 3-(Trimethylsilyl)-1-propanesulfonic acid (DSS) as a reference standard was added to 27.7-52.1 mg (mean 35.3 mg) of placental tissue before being placed into a 4 mm HR-MAS rotor (Bruker Biospin) and spun at 6 kHz with a spectral width of 10 ppm. Data were acquired on an Avance III 600 MHz Bruker NMR spectrometer equipped with a 4 mm HR-MAS probe at the University of Georgia Complex Carbohydrate Research Center. Data were acquired using a one-dimensional experiment with T2 filter using Carr-Purcell-Meiboom-Gill (CPMG) pulse sequence with water presaturation (CPMGPR1D).

Sampleprep ID:

SP001530

Sampleprep Summary:

High-resolution magic angle spinning (HR-MAS) proton nuclear magnetic resonance (1H-NMR) was used to determine metabolites present in placental tissue. Briefly, 30 μL of deuterium oxide (D2O) with 3.3 mM 3-(Trimethylsilyl)-1-propanesulfonic acid (DSS) as a reference standard was added to 27.7-52.1 mg (mean 35.3 mg) of placental tissue before being placed into a 4 mm HR-MAS rotor (Bruker Biospin) and spun at 6 kHz with a spectral width of 10 ppm. Data were acquired on an Avance III 600 MHz Bruker NMR spectrometer equipped with a 4 mm HR-MAS probe at the University of Georgia Complex Carbohydrate Research Center. Data were acquired using a one-dimensional experiment with T2 filter using Carr-Purcell-Meiboom-Gill (CPMG) pulse sequence with water presaturation (CPMGPR1D).

Combined analysis:

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MS: