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Date: | Thu, 9 Sep 1999 22:56:47 EDT |
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Part two of a quiz I use as a pretest for residents, from the chart (pg 78)
in Dr Newman's article. Tune in tomorrow for the answers.
Trying a different format for posting here, which I hope is easier to read.
Match the component to the correct action
*MOLECULES*
Secretory IgA
B12 binding protein
Bifidus factor
Fatty acids
Fibronectin
Gamma-interferon
Hormones & growth factors
Lactoferrin
Lysozyme
Mucins
Oligosaccharides
*Action*
e) Kills bacteria by disrupting their cell walls.
f) Increases antimicrobial activity of microphages:helps to repair tissues
that have been damaged by immune reactions in the baby’s gut.
g) Bind to microorganisms and bar them from attaching to mucosal surfaces.
h) Bind to microbes in baby’s digestive tract and thereby prevent them from
passing through walls of the gut.
i) Reduces amount of vitamin B12, which bacteria need for growth.
j) Stimulate baby’s digestive tract to mature more quickly. Once the
initially “leaky” membranes lining the gut mature, they become less
vulnerable to microorganisms.
k) Disrupts membranes surrounding certain viruses and destroys them.
l) Promotes growth of Lactobacillus bifidus , a harmless bacterium, in baby’s
gut. Growth of such nonpathogenic bacteria helps to crowd out dangerous
varieties.
m) Enhances antimicrobial activity of immune cells.
n) Binds to iron, a mineral many bacteria need to survive. By reducing the
available iron, this molecule thwarts growth of pathogenic bacteria.
o) Adheres to bacteria and viruses, thus preventing their adhesion to mucosal
surfaces.
From J Newman “How Breast Milk Protects Newborns”, Scientific American Dec
1995. Adapted by Deborah Tobin RN IBCLC
Deborah Tobin
RN BSN IBCLC LCCE
Springfield, Virginia USA
In the suburbs outside the Washington DC beltway
mailto:[log in to unmask]
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