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Presentation on In Vitro Molecular Biology 3/5/03

Use and Abuse of Antimicrobial Products

Krista, Mark, Steve


Background:

A group of multinational corporations produce consumer products for a variety of retail outlets. The product lines are diverse and different brand names are used to create and maintain brand loyalty among consumers. Although marketed separately, the companies have created a particular line of such products which all contain specific ingredients which adversely affect the ecosystem. (There is no question in the scientific or medical community that there is strong evidence to support this).

Questions have been raised in the scientific community in recent years about the prudence of the continued public use of these products, but the availability and prevalence of these products has only increased. In fact, the dangerous ingredients have been incorporated into even more products.

The companies use advertising techniques that prey on consumers' fears and tend to send the message that using these products will ameliorate a particular "deleterious" condition. There is an increasing consumer demand for these products.

Key issues and Values:

a. Regulatory issues involving product availability (to whom, when).

b. Benefit vs. risk, consumer education

c. Freedom in business practices

d. Public Welfare

Who should be in charge of the decision-making processes required to solve this problem? How should the process proceed?

Case Studies:

A young mom drives to the store to pick-up a few items for dinner. On her way through the detergent aisle, she remembers to buy hand soap. After perusing a variety of products, she finally decides to buy the brand that promises "antimicrobial disinfection." She used to think that all soaps killed germs, but TV commercials claiming that "antimicrobial" products worked better than regular soap swayed her choice. Even though the antimicrobial soap is a little more expensive, it seems to be a good value if it will eliminate more of the germs.


An eight-yearr old presents in the ER with a temperature of 105°F. After a brief examination, the doctor quickly determines that the patient is suffering from a seasonal flu. Although he knows that antibiotics are ineffective against viral infections, he also knows that the parents expected him to prescribe medication. He ultimately prescribes a 10 day course of the antibiotic penicillin.


A 40 year-old female AIDS patient is brought to the emergency room by relatives. She has been HIV positive for over 10 years and takes a daily cocktail of protease inhibitors to combat the virus. She has a very low viral load and tries to avoid contracting infections as much as possible. On intake, she reports coughing for more than 3 weeks, weight loss, fatigue, night sweats, and fevers. She does not smoke. After a positive skin test, a chest x-ray and a culture from the patient's sputum reveal the doctor's suspicions: the patient has an acute infection of Mycobacterium tuberculosis [TB]. During a six month regimen of ciprofloxacin and ethionamide the patient's condition worsened. The doctor must continue the treatment and the patient is treated for three more months with several other antibiotic cocktails. In spite of the doctor's attempts to formulate more potent cocktails and regimens, the patient dies a few weeks later.

References:

1. Antibiotic resource site: http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/A/Antibiotics.html

2. Antibiotic resistance and its effect on persons living with HIV/AIDS. KeepAntibioticsWorking.com

2. Gilbert DN, Kohlhepp SJ, Slama KA, Grunkemeier G, Lewis G, Dworkin RJ, Slaughter SE, and Leggett JE, 2001. Phynotypic resistantce of Staphylococcus aureus, selected Enterobacteriaceae, and Pseumonas aeruginosa after single and multiple in vitro exposures to ciprofloxacin, levofloxacin and trovafloxacin. Antimicrob Agents & Chemother, 45(3):883-892.

3. Bakker-Woudenburg IAJM, ten Kate MT, Guo L, Working P and Mouton JW, 2002. Ciprofloxiacin in polyethylene glycol-coated liposomes: efficacy in rat models of acute or chronic Pseudomonas aeruginosa infection. Antimicrob Agents & Chemother, 46(8):2575-2581.

4. Tuberculosis antibiotics: http://www.brunel.ac.uk/depts/bl/project/biocomp/bentley/Tuberculosis%20antibiotics.htm

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