Re: abstract on stachy spore release/Live?

[Guest guest]

Jeanine,

Please don't ask me that stuff. Ask Carl or Jeff. I don't know things like

that. I don't have the kind of

EXPERIENCE I would need to know things like that..

What DO I know? My mom taught me how to read.. *laugh*...

And then I taught myself how to search the net..

So, this paper, you asked for, is worth saving, I think, because I am 100%

sure it does something very important. It

SHOWS WHY SPORE TESTING IS WOEFULLY INADEQUATE IN SITUATIONS INVOLVING

STACHYBOTRYS CHARTARUM.

We should save it because it shows why a spore test can show no stachy

spores and nonetheless, stachy spores can be there inside the walls in large

quantities, and a mycotoxin and inflammation problem can be very bad after

years of that.

Toxin testing would show this problem, spore testing would not. ERMI

testing, I think, would also indicate stachy there, if it was done right.

Does that sound about right?

If a single spore test shows spores, there were spores there then. Spores do

not correspond directly to mold, they do show mold, though. *But LACK of

them does NOT show no mold*

If a spore testi doesn't show spores in a location at that time, that does

not mean there is no MOLD or MOLD TOXINS there,

it means that no SPORES were found there, then, thats ALL.

And as this paper shows, stachy spores are DIFFICULT TO FIND because they

often stay right where they grow, more than 99% of them just stay attached

to the wall or wherever they grew, but the toxins persist for years, to be

released slowly.

Thats how I interpret this..

As Jeff said, unless a mouse scurrys through the wall (knocking off spores)

at exactly the right time, you might never see a stachy spore.

------

http://dx.doi.org/10.1016/j.fgb.2006.12.007

* *Fungal Genet Biol. <javascript:AL_get(this, 'jour', 'Fungal Genet

Biol.');> 2007 Jul;44(7):641-7. Epub 2006 Dec 24.

Biomechanics of conidial dispersal in the toxic mold *Stachybotrys chartarum

*

* *

* Tucker, L. Stolze, H. Kennedy and P. Money*

Department of Botany, Miami University, Oxford, OH 45056, USA

Received 26 August 2006; accepted 15 December 2006. Available online 24

December 2006.

Abstract

Conidial dispersal in *Stachybotrys chartarum* in response to low-velocity

airflow was studied using a microflow apparatus. The maximum rate of spore

release occurred during the first 5 min of airflow, followed by a dramatic

reduction in dispersal that left more than 99% of the conidia attached to

their conidiophores. Micromanipulation of undisturbed colonies showed that

micronewton (ìN) forces were needed to dislodge spore clusters from their

supporting conidiophores. Calculations show that airspeeds that normally

prevail in the indoor environment disturb colonies with forces that are

1000-fold lower, in the nanonewton (nN) range. Low-velocity airflow does

not, therefore, cause sufficient disturbance to disperse a large proportion

of the conidia of *S. chartarum*.

*Keywords: *Allergen; Conidiophore; Digital video analysis;

Micromanipulation; Mycotoxin; Satratoxin; Spore

[Guest guest]

The mold that got me was a white color, powder when dry.

>

> I wish I could put pictures of it here that I tooj after a heacy rain

> where it was growing on the sofits and afterwards when iy dried and

you

> couldn't see nothing there, just the white of the sofits, maybe a

riny

> bit offwhite but assumming that sence this was outside the bugs and

> wind may have rekeased more spores but maybe not because it dries to

a

> white, doesn't it?

>

[Guest guest]

Thanks Live, and yes,it is important. I recall a few older studies

were 1 stachy mold spore was found and they dismissed it as being

important.

[Guest guest]

well O didn't have mice but bats got in from some flashing missing so

that may account for more sporws drifting dpwn to the basement.

[Guest guest]

Londa, I read something a long time ago but dont really remember it,may

have been chaetomium but dont remember.

the dust at this house was turning black.

> >

> >> > white, doesn't it?

> >

>

[Guest guest]

Jeanine, is this it?

____cut here____

Biomechanics of conidial dispersal in the toxic mold Stachybotrys chartarum.

Fungal Genet Biol. 2007 Jul;44(7):641-7. Epub 2006 Dec 24.

Tucker K, Stolze JL, Kennedy AH, Money NP.

Department of Botany, Miami University, Oxford, OH 45056, USA.

http://dx.doi.org/10.1016/j.fgb.2006.12.007

Conidial dispersal in Stachybotrys chartarum in response to

low-velocity airflow was studied using a microflow apparatus. The

maximum rate of spore release occurred during the first 5 min of

airflow, followed by a dramatic reduction in dispersal that left more

than 99% of the conidia attached to their conidiophores.

Micromanipulation of undisturbed colonies showed that micronewton

(microN) forces were needed to dislodge spore clusters from their

supporting conidiophores. Calculations show that airspeeds that

normally prevail in the indoor environment disturb colonies with

forces that are 1000-fold lower, in the nanonewton (nN) range.

Low-velocity airflow does not, therefore, cause sufficient disturbance

to disperse a large proportion of the conidia of S. chartarum.

PMID: 17267247 [PubMed - in process]

[Guest guest]

yes, thanks Live.

>

> Jeanine, is this it?

>

>

[Guest guest]

the white powder was stachy, and many many molds with bulk samples from

P & K Labs.

> > >

> > >> > white, doesn't it?

> > >

> >

>

[Guest guest]

, yes,thinking it said many different molds can leave behind a

white dust and/or be white at different times. my second home had a

white layer of dust in the crawl space.

> > > >

> > > >> > white, doesn't it?

> > > >

> > >

> >

>

[Guest guest]

I think you need a microscope to even make an educated guess as to whether

dust is mold dust.. It might be, though. If it makes you sick, it might be

mold or aerosolized mold dust.. That is a very strong possibility.

I haven't been able to find any web sites that explain how to identify mold

samples under a microscope, but if there was one it would be very useful to

learn that skill, I think.