[Histonet] TB in Lung Specimens

[Gudrun Lang]

It may be a silly question.
If we put our positiv-control blocks of Tb on an adequate agar, will the
bacteria grow?
And if not, are they really killed?

Gudrun


----- Original Message ----- 
From: "Patsy Ruegg" <pruegg <@t> ihctech.net>
To: <histonet <@t> pathology.swmed.edu>
Sent: Sunday, August 29, 2004 5:07 PM
Subject: [Histonet] TB in Lung Specimens


> This is alarming.  I have not been on histonet for a while, was there
> responses to this?  I have been working with formalin fixed paraffin
> embedded tb infected tissue for years without using these kind of
> precautions.  Am I at risk for TB infection?
> Patsy Ruegg
>
> -----Original Message-----
> From: Patsy Ruegg [mailto:pruegg <@t> ihctech.net]
> Sent: Saturday, August 28, 2004 9:51 AM
> To: pruegg <@t> ihctech.net
> Subject: FW: [Histonet] TB in Lung Specimens
>
>
>
>
> -----Original Message-----
> From: histonet-bounces <@t> lists.utsouthwestern.edu
> [mailto:histonet-bounces <@t> lists.utsouthwestern.edu]On Behalf Of Andrew
> Kennedy
> Sent: Monday, August 09, 2004 2:19 PM
> To: Histonet
> Subject: [Histonet] TB in Lung Specimens
>
>
> Hi Histonetters,
>
>
>
> A recent article in Human Pathology suggests that Mycobacteria in formalin
> fixed tissue can remain viable and therefore there is a risk of
contracting
> TB from these specimens. It suggests that formalin fixed tissue from
> suspected TB cases should be handled with gloves, gown and mask.
>
>
> I wonder if we should be using these precautions for every lung specimen
at
> every step in the histological process! If the organisms are still viable,
> trimmings from blocks should probably be bagged and disposed of in
> infectious waste. It could quite possibly end up being the same as with
CJD
> brain specimens. What do you all think about this?
>
>
>
> Reference: Gerston, K.F. Blumberg, L. Tshabalala, V.A. Murray, J.
Viability
> of Mycobacteria in Formalin Fixed Lungs. Human Pathology, Vol 35, No 5.
May
> 2004. pp 571-575
>
>
>
> Andrew Kennedy
>
> Senior Science Officer
>
> Anatomical Pathology
>
> Concord Repatriation General Hospital
>
> Hospital Road
> Concord NSW 2139
>
>
>
> ph: +612 9767 6115
>
> Fax +612 9767 8427
>
>
>
> "corpora non agunt nisi fixata"
>
>
>
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