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Related Concept Videos

Directing Effect of Substituents: meta-Directing Groups01:09

Directing Effect of Substituents: meta-Directing Groups

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Substituents on the benzene ring that direct an incoming electrophile to undergo substitution at the meta position are called meta directors. All meta directors either have a positive charge on the atom directly bonded to the ring or a partial positive charge. These groups function by withdrawing electrons from the ring through inductive and resonance effects. Consider the carbocation intermediates formed upon the addition of an electrophile on nitrobenzene at the...
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Microorganisms in Medicine and Therapeutics01:29

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Microorganisms play a fundamental role in vaccine development, gene therapy, and therapeutic production. Their biological properties are harnessed to advance medicine and public health. Beyond immunization, microorganisms contribute to gut health, antibiotic synthesis, and genetic disease treatment.Live Attenuated and Inactivated VaccinesLive attenuated vaccines, such as the measles, mumps, and rubella (MMR) vaccine, utilize weakened forms of pathogens to closely resemble natural infections.
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Combination Therapies and Personalized Medicine02:50

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Combining two or more treatment methods increases the life span of cancer patients while reducing damage to vital organs or tissue from the overuse of a single treatment. Combination therapy also targets different cancer-inducing pathways, thus reducing the chances of developing resistance to treatment.
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meta-Directing Deactivators: –NO2, –CN, –CHO, –⁠CO2R, –COR, –CO2H01:13

meta-Directing Deactivators: –NO2, –CN, –CHO, –⁠CO2R, –COR, –CO2H

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All meta-directing substituents are deactivating groups. These substituents withdraw electrons from the aromatic ring, making the ring less reactive toward electrophilic substitution. For example, the nitration of nitrobenzene is 100,000 times slower than that of benzene because of the deactivating effect of the nitro group. The first step in an electrophilic aromatic substitution is the addition of an electrophile to form a resonance-stabilized carbocation. The energy diagrams for...
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The Placebo Effect

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The placebo effect occurs when people's expectations or beliefs influence or determine their experience in a given situation. In other words, simply expecting something to happen can actually make it happen.
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Embryonic Stem Cells00:58

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Embryonic stem (ES) cells are undifferentiated pluripotent cells, meaning they can produce any cell type in the body. This gives them tremendous potential in science and medicine since they can generate specific cell types for use in research or to replace body cells lost due to damage or disease.
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Updated: Feb 13, 2026

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Making Millennial Medicine More Meta.

Peter J Turnbaugh1

  • 1Department of Microbiology & Immunology, UCSF, San Francisco, California, USA.

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|March 21, 2018
PubMed
Summary
This summary is machine-generated.

The human microbiome, or "second genome," significantly impacts drug efficacy and toxicity. Overcoming barriers to integrating metagenomics into pharmacology could personalize medicine and create novel microbiome-targeted therapies.

Keywords:
chemical biologymetagenomicsmicrobiomepharmacologyprecision medicinetoxicology

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Area of Science:

  • Microbiome research
  • Pharmacology
  • Genetics

Background:

  • Human genetic polymorphisms are known to affect drug responses.
  • The role of the microbiome, our "second genome," in therapeutic outcomes is understudied.
  • Genotypic and copy number variants in the microbiome are largely overlooked in pharmacology.

Purpose of the Study:

  • To discuss barriers in integrating metagenomics into pharmacology.
  • To highlight research linking the human microbiome to drug efficacy and toxicity.
  • To outline future challenges and opportunities in microbiome-pharmacology research.

Main Methods:

  • Perspective piece discussing current research and challenges.
  • Integration of metagenomics with pharmacological studies.
  • Interdisciplinary research at the chemistry-biology interface.

Main Results:

  • Three major barriers to integrating metagenomics into pharmacology are identified.
  • Research demonstrates mechanisms linking the microbiome to small-molecule and biological therapy outcomes.
  • The potential for microbiome-based therapeutics is significant.

Conclusions:

  • Integrating the microbiome into pharmacology requires interdisciplinary collaboration.
  • Overcoming challenges can lead to precise patient response prediction.
  • A new generation of microbiome-based or targeted therapeutics is feasible.