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International Epidemics Lecture November 4, 2015 B. W. Cue, Jr
International Epidemics Lecture November 4, 2015 B.W. Cue, Jr. (UMB 1969) Outline: An overview of infectious microbes (excluding fungii) Bacteria vs. viruses An overview of antimicrobial therapy Cidal vs. static drugs What is drug resistance? Green chemistry implications Treatment approaches New drugs and approaches
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Bacteria or Virus? Source: Wikipedia
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Bacteria or Virus? Source: Wikipedia
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Cidal vs. Static Drugs Bacteriocidal Bacteriostatic
This kind of drug kills all susceptible bacteria Bacteriostatic This kind of drug inhibits/slows the growth of bacteria until host’s immune system takes over
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What causes antibiotic resistance?
The more antibiotics are used, the more chances bacteria have to become resistant to them. Major causes of antibiotic resistance include using antibiotics when they are not needed. Defensive medicine. Over-the-counter availability in some regions of the world. not taking antibiotics at the doses and times that a doctor prescribes — this allows time for the bacteria in your system to become resistant. Antibiotics are also often overused in animals (in veterinary medicine and in agriculture). Improper disposal of unused antibiotics. Hospital waste. Discharge of waste containing antibiotics from manufacturing plants.
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You can help prevent antibiotic resistance
understanding that most people don’t need antibiotics for colds and flu because they are caused by viruses telling your doctor you only want an antibiotic if it is really necessary taking the right dose of your antibiotic at the right time, as prescribed by your doctor taking your antibiotics for as long as your doctor tells you to taking simple steps to avoid infections and prevent them from spreading Properly disposing of unused/unwanted antibiotics
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Source: CDC Report, Antibiotic Resistance Threats in the United States, 2013
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Green Chemistry “…the utilization of a set of principles that reduces or eliminates the use or generation of hazardous substances in the design, manufacture and application of chemical products.” *Source: Paul T. Anastas and John C. Warner, Green Chemistry: Theory and Practice (New York, NY: Oxford University Press Inc., 1998). ISBN
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Green chemistry has become associated with a quick way to eliminate bad actor chemicals
Origins Of Materials Manufacturing Distribution Use End of Life Waste Prevention Less Hazardous Reagents Atom Economy Renewable Feedstocks Design For Degradation Benign Solvent Systems Green Analytical Methods Use of Catalysis Benign Product Design Design for Safety and Security Unnecessary Derivatives Energy Considerations Green chemistry applies across the product lifecycle
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Meeting Both Quality and Environmental Requirements Is a Big Challenge
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Top Generic Companies by Sales (88% of 2014 Rx’s)
Company & Sales (2012)1 Our Perception of Their Green Chemistry Activity (Max +++++)2 Teva $10.2 B Sandoz (Novartis) $8.7B Actavis $5.9 B Mylan $5.8 B Hospira $4.1 B Sanofi $2.5 B Ranbaxy $2.3 B Aspen Pharmacare $1.5B STADA Arzneimittel $1.3B ++ +++ - 1. Source 2012 Sales: 2. Benchmarking green chemistry adoption by “big pharma” and generics manufacturers: Drivers, Barriers and Opportunities, Veleva and Cue, submitted.
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Concerns about Manufacturing Waste in China and India
A consumer advocacy group, SumOfUs, reports one of XXX’s antibiotics suppliers in China, NCPC, discharges pharmaceutical waste into the environment. Generic drug company YYY contracts with an Indian company, AAA, which in turn gets drug supplies from four polluting Chinese factories. And ZZZ deals with three Chinese companies that “have been in the Chinese media spotlight for various offenses including improper waste management and the release of noxious chemicals,” the study says Researchers from Sweden studying the water supplies around the pharmaceutical center of Hyderabad, India, found them contaminated with various kinds of drugs that had been released by manufacturing plants there. Sweden has proposed adding environmental considerations to global ICH cGMP’s. The ACS Green Chemistry Institute’s Pharmaceutical Roundtable has begun to consider how to spread green chemistry throughout the pharmaceutical supply chain
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Contract Research Sites in India
Source:
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Antibiotic Manufacturing Waste near Hyderabad, India
Source:
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Figure 1. Multi-drug resistance observed among 93 bacterial strains isolated from the PETL WWTP.
Marathe NP, Regina VR, Walujkar SA, Charan SS, Moore ERB, et al. (2013) A Treatment Plant Receiving Waste Water from Multiple Bulk Drug Manufacturers Is a Reservoir for Highly Multi-Drug Resistant Integron-Bearing Bacteria. PLoS ONE 8(10): e doi: /journal.pone
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New drugs and approaches
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New systemic antibacterial agents approved by the US Food and Drug Administration per 5-year period, through 2012. New systemic antibacterial agents approved by the US Food and Drug Administration per 5-year period, through Modified from Spellberg 2004 [23]. Boucher H W et al. Clin Infect Dis. 2013;cid.cit152 © The Author Published by Oxford University Press on behalf of the Infectious Diseases Society of America. All rights reserved. For Permissions, please
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GAIN legislation
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The first new beta lactamase inhibitor in 30 years
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Beta Lacatmase Inhibitors
Sulbactam CP-45899 MK-7665 Relebactam NDA Approval 2015?
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Bacteriophages
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Questions?? b.cue@comcast.net
Thank You Questions??
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