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Antibiotic Selection00:57

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Antibiotic resistance is a major public health concern that arises when bacteria evolve mechanisms to withstand the effects of antibiotic treatments. This resistance can be intrinsic, acquired through genetic mutations, or transferred between bacteria via horizontal gene transfer. The development of antibiotic resistance poses significant challenges in treating bacterial infections and necessitates ongoing research to develop new therapeutic strategies.Intrinsic resistance occurs when bacterial...
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In 1923, G. N. Lewis proposed a generalized definition of acid-base behavior in which acids and bases are identified by their ability to accept or to donate a pair of electrons and form a coordinate covalent bond.
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Some compounds produce hydroxide ions when dissolved by chemically reacting with water molecules. In all cases, these compounds react only partially and so are classified as weak bases. These types of compounds are also abundant in nature and important commodities in various technologies. For example, global production of the weak base ammonia is typically well over 100 metric tons annually, being widely used as an agricultural fertilizer, a raw material for chemical synthesis of other...
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One of the common DNA damages is the chemical alteration of single bases by alkylation, oxidation, or deamination. The altered bases cause mispairing and strand breakage during replication. This type of damage causes minimal change to the DNA double helix structure and can be repaired by the base excision repair (BER) pathways. BER corrects damaged DNA sequences by removing the damaged base and restoring the original base sequence using the complementary strand as a template.
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Salts with Acidic Ions
Salts are ionic compounds composed of cations and anions, either of which may be capable of undergoing an acid or base ionization reaction with water. Aqueous salt solutions, therefore, may be acidic, basic, or neutral, depending on the relative acid-base strengths of the salt’s constituent ions. For example, dissolving the ammonium chloride in water results in its dissociation, as described by the equation:
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Antibiotic recommendations of office-based physicians, 2007-2011.

R Finley1

  • 1Centre for Food-borne, Environmental and Zoonotic Infectious Diseases, Public Health Agency of Canada, Guelph, ON.

Canada Communicable Disease Report = Releve Des Maladies Transmissibles Au Canada
|May 18, 2018
PubMed
Summary

Canadian physicians

Area of Science:

  • Public Health
  • Infectious Diseases
  • Pharmacology

Background:

  • Antimicrobial resistance is a growing global concern.
  • Understanding prescribing patterns is crucial for antimicrobial stewardship.
  • Office-based physicians play a key role in primary care antibiotic use.

Purpose of the Study:

  • To analyze trends in antibiotic recommendations by Canadian office-based physicians.
  • To identify variations in prescribing patterns across Canadian regions.
  • To assess changes in antibiotic use between 2007 and 2011.

Main Methods:

  • Utilized quarterly data from approximately 652 physicians across five Canadian regions.
  • Physicians maintained practice diaries for randomly selected 48-hour periods.

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  • Data were extrapolated to estimate national antimicrobial recommendations.

    • Main Results:

    • Over 120 million antimicrobial recommendations were made between 2007-2011.
    • Respiratory infections accounted for the majority of antibiotic prescriptions (51%).
    • Antibiotic recommendation rates generally decreased, except for genitourinary and ear infections.

    Conclusions:

    • Canadian office-based physician antibiotic recommendations remained stable or decreased, excluding third-generation cephalosporins.
    • Higher rates of antimicrobial recommendations were observed in the Atlantic region and Québec.
    • Continued surveillance is necessary to monitor prescribing trends and inform stewardship efforts.