Relative IGF-1 and IGF-2 gene expression in maternal and fetal tissues from diabetic swine

Conference · Mon Feb 26 00:00:00 EST 1990 · FASEB Journal (Federation of American Societies for Experimental Biology); (United States)

OSTI ID:5895022

Wolverton, C K; Leaman, D W; White, M E; Ramsay, T G ^[1]

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1. Ohio State Univ., Columbus (United States)

Fourteen pregnant, crossbred gilts were utilized in this study. Seven gilts were injected with alloxan (50 mg/kg) at day 75 of gestation to induce diabetes. Gilts underwent caesarean section on day 105 of gestation. Samples were collected from maternal skeletal muscle, adipose tissue, uterus and endometrium; and from fetal skeletal muscle, adipose tissue, placenta, liver, lung, kidney, heart, brain and spleen. Tissues were frozen in liquid nitrogen for later analysis of IGF-1 and IGF-2 gene expression. Samples were pooled and total RNA was isolated using the guanidine isothiocynate method. Total mRNA was analyzed by dot blot hybridization. Blots were probed with {sup 32}P-cDNA for porcine IGF-1 and rat IGF-2. IGF-1 gene expression in maternal tissues was unaffected by diabetes. Maternal diabetes increased IGF-2 mRNA in maternal adipose tissue but exhibited no effect in muscle or uterus. Expression of IGF-2 by maternal endometrium was decreased by diabetes. Maternal diabetes induced an increase in IGF-1 gene expression in muscle and placenta while causing an increase in IGF-2 expression in fetal liver and placenta. IGF-2 mRNA was lower in lung from fetuses of diabetic mothers than in controls. These results suggest that maternal diabetes alters IGF-1 and IGF-2 gene expression in specific tissues and differential regulation of these genes appears to exist in the mother and developing fetus.

• OSTI ID: 5895022
• Report Number(s): CONF-9104107-; CODEN: FAJOE
• Journal Information: FASEB Journal (Federation of American Societies for Experimental Biology); (United States), Vol. 4:3; Conference: 75. annual meeting of the Federation of American Societies for Experimental Biology (FASEB), Atlanta, GA (United States), 21-25 Apr 1991; ISSN 0892-6638
• Country of Publication: United States
• Language: English

Related Subjects

59 BASIC BIOLOGICAL SCIENCES
GROWTH FACTORS
GENES
SWINE
MOLECULAR BIOLOGY
ADIPOSE TISSUE
BRAIN
DIABETES MELLITUS
DNA
FETUSES
HEART
IMMUNOGLOBULINS
KIDNEYS
LIVER
LUNGS
MUSCLES
PHOSPHORUS 32
RNA
SKELETON
SPLEEN
TRACER TECHNIQUES
UTERUS
ANIMAL TISSUES
ANIMALS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BODY
CARDIOVASCULAR SYSTEM
CENTRAL NERVOUS SYSTEM
CONNECTIVE TISSUE
DAYS LIVING RADIOISOTOPES
DIGESTIVE SYSTEM
DISEASES
DOMESTIC ANIMALS
ENDOCRINE DISEASES
FEMALE GENITALS
GLANDS
GLOBULINS
ISOTOPE APPLICATIONS
ISOTOPES
LIGHT NUCLEI
MAMMALS
METABOLIC DISEASES
MITOGENS
NERVOUS SYSTEM
NUCLEI
NUCLEIC ACIDS
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
ORGANS
PHOSPHORUS ISOTOPES
PROTEINS
RADIOISOTOPES
RESPIRATORY SYSTEM
TISSUES
VERTEBRATES
550401* - Genetics- Tracer Techniques