Free Republic
Browse · Search
General/Chat
Topics · Post Article

Skip to comments.

Diagnosing bacterial growth
Chemistry World ^ | 6 February 2013 | Harriet Brewerton

Posted on 02/07/2013 4:34:32 PM PST by neverdem


Antibiotics are used regularly for treating bacterial infections, but there is currently no quick and simple test to determine the most effective type or dose of antibiotic for a specific patient infection. As a result, it’s estimated that around 30% of all antibiotic prescriptions are not the optimum choice. This can lead to the formation of drug-resistant bacteria, delayed recovery, and in some cases death from an infection.

Tests for the most appropriate antibiotic choice are performed for life-threatening patient infections. However, microbes have to be grown on agar plates from a very small patient sample which delays results for a few days. Hiroaki Suzuki et al have designed a microfluidic device that is able to determine the most effective antibiotic treatment in just 12 hours.

The device consists of eight separate culture chambers, which can test a range of concentrations simultaneously. Once bacteria are added the growth rate is recorded using a reflection-microscopy technique. The images obtained allow the volume of bacteria present to be calculated, which in turn allows estimation of the minimum concentration of antibiotic required to effectively treat a patient.

Shuqi Wang, an expert in microfluidic diagnostic devices, at Harvard Medical School, USA, comments ‘This method has broad potential applications to help clinicians choose the right antibiotics at the right concentration against given bacteria, and thus to avoid empirical antibiotic treatment. In particular, the multi-chamber microfluidic design allows simultaneous evaluation of multiple antibiotics at various concentrations in one testing.’

References

R Takagi et al, Analyst, 2013, DOI:10.1039/c2an36323b



TOPICS: Health/Medicine; Science
KEYWORDS: antibiotics; bacterialinfections; microbiology; microfluidicdevices; microscopy

1 posted on 02/07/2013 4:34:44 PM PST by neverdem
[ Post Reply | Private Reply | View Replies]

To: Mother Abigail; EBH; vetvetdoug; Smokin' Joe; Global2010; Battle Axe; null and void; ...
Small-molecule drug drives cancer cells to suicide

FReepmail me if you want on or off my combined microbiology/immunology ping list.

2 posted on 02/07/2013 4:43:35 PM PST by neverdem ( Xin loi min oi)
[ Post Reply | Private Reply | To 1 | View Replies]

To: neverdem

This stuff will kill em...http://www.youtube.com/watch_popup?v=Yn0ey0vePwI&vq=medium


3 posted on 02/07/2013 4:50:04 PM PST by csmusaret (I will give Obama credit for one thing- he is living proof that familiarity breeds contempt.)
[ Post Reply | Private Reply | To 2 | View Replies]

To: neverdem

” Hiroaki Suzuki et al have designed a microfluidic device that is able to determine the most effective antibiotic treatment in just 12 hours.”

Will be subject to Oskeetercare medical device tax.


4 posted on 02/07/2013 4:55:16 PM PST by Dr. Bogus Pachysandra ( Ya can't pick up a turd by the clean end!)
[ Post Reply | Private Reply | To 1 | View Replies]

To: neverdem

manuka honey, garlic (allicin), and oil of oregano.


5 posted on 02/07/2013 5:10:24 PM PST by Secret Agent Man (I can neither confirm or deny that; even if I could, I couldn't - it's classified.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: Secret Agent Man

I vote for non-colloidal silver biotics (liquid and gel)


6 posted on 02/07/2013 5:30:28 PM PST by Maudeen (Proverbs 3:5-6)
[ Post Reply | Private Reply | To 5 | View Replies]

To: neverdem

They should be looking at fungi.

There is a constant war going on in the microbial world between bacteria and fungi.

Heck, we got penicillin from a mold and I think there are others as well.

Last I heard, there’s something like a million species of fungi that have yet to be discovered and classified!


7 posted on 02/07/2013 5:36:47 PM PST by djf (Conservative values help the poor. Liberal values help them STAY poor!!!)
[ Post Reply | Private Reply | To 2 | View Replies]

To: Maudeen

yeah silver’s good too but the others are internal or external and you don’t have to worry about turning blue.


8 posted on 02/07/2013 5:44:31 PM PST by Secret Agent Man (I can neither confirm or deny that; even if I could, I couldn't - it's classified.)
[ Post Reply | Private Reply | To 6 | View Replies]

To: Secret Agent Man

No blue with this :) This is non colloidal - nano technology, We even use it on our pets with wonderful results. It sometimes is called silver sol by Amerian Labs. Good to have on hand.


9 posted on 02/07/2013 7:17:19 PM PST by Maudeen (Proverbs 3:5-6)
[ Post Reply | Private Reply | To 8 | View Replies]

To: Secret Agent Man

I used Manuka on a surgical wound that was 7cm circumference instead of getting a skin graft. It took four months to heal, but it worked.


10 posted on 02/07/2013 8:34:30 PM PST by kabumpo (Kabumpo)
[ Post Reply | Private Reply | To 5 | View Replies]

To: Secret Agent Man

I used Manuka on a surgical wound that was 7cm circumference instead of getting a skin graft. It took four months to heal, but it worked.


11 posted on 02/07/2013 8:34:53 PM PST by kabumpo (Kabumpo)
[ Post Reply | Private Reply | To 5 | View Replies]

To: Secret Agent Man

I used Manuka on a surgical wound that was 7cm circumference instead of getting a skin graft. It took four months to heal, but it worked.


12 posted on 02/07/2013 8:34:53 PM PST by kabumpo (Kabumpo)
[ Post Reply | Private Reply | To 5 | View Replies]

To: Secret Agent Man

I used Manuka on a surgical wound that was 7cm circumference instead of getting a skin graft. It took four months to heal, but it worked.


13 posted on 02/07/2013 8:35:18 PM PST by kabumpo (Kabumpo)
[ Post Reply | Private Reply | To 5 | View Replies]

To: djf
They should be looking at fungi.

That's looking for new antibacterial drugs. This device offers an alternate or supplement to culture and sensitivity testing in currently sick patients.

14 posted on 02/07/2013 8:49:40 PM PST by neverdem ( Xin loi min oi)
[ Post Reply | Private Reply | To 7 | View Replies]

To: zeestephen

IIRC, you commented on microfluidic devices once before.


15 posted on 02/09/2013 10:00:01 PM PST by neverdem ( Xin loi min oi)
[ Post Reply | Private Reply | To 1 | View Replies]

To: neverdem
Thanks for the hit on bacterial growth.

I read most of your Science posts each week, ping list or not.

16 posted on 02/10/2013 12:40:43 AM PST by zeestephen
[ Post Reply | Private Reply | To 15 | View Replies]

To: neverdem

Bump


17 posted on 02/10/2013 12:53:32 AM PST by petitfour
[ Post Reply | Private Reply | To 1 | View Replies]

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
General/Chat
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson