On HIV and BF

iVillage Member
Registered: 03-26-2003
On HIV and BF
1
Fri, 04-04-2003 - 8:23pm
I thought this was really interesting and just wanted to pass it on for the general information of the masses. ;-)

"FROZEN HUMAN MILK

It is hypothesized that freezing affects lipids in human milk by

breaking

down fat globule membranes, decreasing the size of the fat globules,

and

therefore increasing the surface available for lipase activity.

Although

there is some loss of immunological components during freezing, which

destroys living cells in the milk, some remain intact, and frozen

human

milk provides more advantages to the infant than commercially

manufactured

cow's milk based formulas.

In 1989 it was reported that another enveloped virus, similar to the

HIV

virus, the human T-cell leukemia virus type 1 (HTLV-1 virus), which is

also spread through blood, sexual activity and breastfeeding ,and which

is

also nearly always fatal, is killed when human milk is frozen to -20

degrees C (0 degrees F) and thawed. Thus a mother who is HTLV+ may

safely

use this "freeze-and-thaw" method of feeding her own expressed

breastmilk

to her baby. (Ando et al, l989) In a study done to determine the

safety

of pasteurization of human milk, it was found that cell-free HIV was

destroyed after sitting at O degrees C for 30 minutes and the titer of

HIV

infected cells was considerably reduced (Orloff et al 1993).

We need to know whether freezing and thawing will also kill the HIV

virus. If so, previously frozen and thawed breastmilk would provide a

safer alternative to formula feeding for the HIV-infected mother with

access to a refrigerator/freezer.

--------------------------

Refs cited:

Ando Y, Kakimoto K, Tanigawa T, Furuki K, Saito K, Nakano S, Hashimoto

H,

Moriyama I, Ichijo M Toyama T 1989, Effect of freeze-thawing breast

milk

on vertical HTLV-1 transmission from seropositive mothers to children.

Jap

J Cancer Res 80:405-07.

Orloff SL, Wallingford JC, McDougal JS 1993, Inactivation of human

immunodeficiency virus type 1 in human milk: effects of intrinsic

factors

in human milk and of pasteurization. J Hum Lact 9(1):13-17."

Avatar for cl_sunny_side_up
iVillage Member
Registered: 03-25-2003
In reply to: macbump
Fri, 04-04-2003 - 10:33pm
Wow....thanks for that. Very, very, interesting. I will keep my eyes and ears open to hear more.....

christine


~christine~