Increased albumin permeation in eyes, aorta, and kidney of hypertensive rats fed galactose

Conference · Sat Mar 01 00:00:00 EST 1986 · Fed. Proc., Fed. Am. Soc. Exp. Biol.; (United States)

OSTI ID:5006521

Tilton, R G; LaRose, L; Chang, K; Weigel, C J; Williamson, J R

These experiments were undertaken to determine whether ingestion of galactose increases albumin permeation in the vasculature of hypertensive rats. 50% dextrin (control) or 50% galactose diets were fed to unilaterally nephrectomized, male Sprague-Dawley rats weighing 200 g. Hypertension (systolic pressure >175 mmHg) was induced by weekly IM injections of 25 mg/kg DOCA and 1% saline drinking water; 3 months later /sup 125/I-albumin permeation was assessed in whole eyes, aorta and kidneys. /sup 125/I-albumin permeation was significantly increased in all 3 tissues of hypertensive rats (n = 9) vs controls (n = 9): aorta (3.30 +/- 0.19 (SD) vs 2.87 +/- 0.14), eye (3.15 +/- 0.14 vs 2.59 +/- 0.11), and kidney (6.58 +/- 0.63 vs 3.85 +/- 0.50). Albumin permeation was increased still further in hypertensive rats fed the galactose diet (n = 8): aorta (3.75 +/- 0.38), eye (3.82 +/- 0.17), and kidney (10.74 +/- 3.13). Hypertension +/- galactose feeding had no effect on albumin permeation in lung, skin, or brain. These findings indicate that: (1) hypertension increases albumin permeation in vessels affected by diabetic vascular diseases, and 2) hypertension-induced increases in albumin permeation are increased still further by galactose ingestion, presumably mediated by imbalances in polyol/insitol metabolism (analogous to those induced by diabetes) independent of hyperglycemia and/or insulinopenia.

• Research Organization: Washington Univ. School of Medicine, St. Louis, MO
• OSTI ID: 5006521
• Report Number(s): CONF-8604222-; TRN: 86-037029
• Journal Information: Fed. Proc., Fed. Am. Soc. Exp. Biol.; (United States), Vol. 45:3; Conference: 70. annual meeting of the Federation of American Society for Experimental Biology, St. Louis, MO, USA, 13 Apr 1986
• Country of Publication: United States
• Language: English

Related Subjects

59 BASIC BIOLOGICAL SCIENCES
ALBUMINS
TISSUE DISTRIBUTION
GALACTOSE
BIOLOGICAL EFFECTS
HYPERTENSION
PATHOGENESIS
AORTA
BRAIN
DIET
EYES
IODINE 125
KIDNEYS
LUNGS
NEPHRECTOMY
PERMEABILITY
RATS
SKIN
TRACER TECHNIQUES
ALDEHYDES
ANIMALS
ARTERIES
BETA DECAY RADIOISOTOPES
BLOOD VESSELS
BODY
BODY AREAS
CARBOHYDRATES
CARDIOVASCULAR DISEASES
CARDIOVASCULAR SYSTEM
CENTRAL NERVOUS SYSTEM
DAYS LIVING RADIOISOTOPES
DISEASES
DISTRIBUTION
ELECTRON CAPTURE RADIOISOTOPES
FACE
HEAD
HEXOSES
INTERMEDIATE MASS NUCLEI
IODINE ISOTOPES
ISOTOPE APPLICATIONS
ISOTOPES
MAMMALS
MEDICINE
MONOSACCHARIDES
NERVOUS SYSTEM
NUCLEI
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
ORGANS
PROTEINS
RADIOISOTOPES
RESPIRATORY SYSTEM
RODENTS
SACCHARIDES
SENSE ORGANS
SURGERY
SYMPTOMS
VASCULAR DISEASES
VERTEBRATES
550901* - Pathology- Tracer Techniques