Inhibition of fibroblast-populated collagen lattice contraction by an albumin-bound lipid fraction in human amniotic fluid.

Abstract:

:Human amniotic fluid inhibits the contraction of fibroblast-populated collagen lattices. Amniotic fluid of 21 weeks' gestation was previously reported to have peak inhibiting activity. An attempt to isolate the inhibitory factor(s) from human amniotic fluid employing a molecular sieving column demonstrated an inhibitory factor near 70,000 molecular weight (repeated three times with triplicate samples). Since albumin has a molecular weight of 68,000 and is in high concentration in amniotic fluid, the removal of albumin by an Affi-Gel Blue (an albumin binding affinity column) was the first step in the purification scheme. The bound human amniotic fluid albumin fraction was eluted from the Affi-Gel Blue column, and the unexpected finding was that this fraction inhibited fibroblast-populated collagen lattice contraction (three repetitions in duplicate). We previously showed that prostaglandins and saturated and unsaturated fatty acids affect fibroblast-populated collagen lattice contraction, and albumin is a carrier for lipids. The eluted albumin fraction was separated into its protein and lipid components. The lipid-free albumin fraction had no fibroblast-populated collagen lattice contraction inhibiting activity (run four times in duplicate). The isolated lipid fraction inhibited fibroblast-populated collagen lattice contraction in a dose-responsive manner (repeated twice in triplicate). It was demonstrated that lipid bound to albumin isolated from human amniotic fluid inhibited fibroblast-populated collagen lattice contraction.

journal_name

Plast Reconstr Surg

authors

Yager JS,Hugo NE,Ehrlich HP

doi

10.1097/00006534-199801000-00002

subject

Has Abstract

pub_date

1998-01-01 00:00:00

pages

6-11

issue

1

eissn

0032-1052

issn

1529-4242

journal_volume

101

pub_type

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