[Cross susceptibility of ototoxicity about aminoglycoside antibiotics]

J Wu1

  • 1Military General Hospital, Jinan.

Lin Chuang Er Bi Yan Hou Ke Za Zhi = Journal of Clinical Otorhinolaryngology
|January 1, 1997
PubMed

Insights

Aminoglycoside (AMI) antibiotics can cause deafness, especially in children with a family history. Genetic factors, particularly maternal inheritance, increase susceptibility to AMI toxicity.

Area of Science:

  • Pharmacogenetics
  • Ototoxicity
  • Genetic Epidemiology

Context:

  • Aminoglycoside antibiotics are widely used but can cause hearing loss.
  • Familial aggregation of aminoglycoside-induced deafness suggests a genetic component.
  • Previous studies have indicated potential genetic predispositions to aminoglycoside ototoxicity.

Purpose:

  • To investigate the genetic basis of aminoglycoside-induced deafness in three families.
  • To determine the inheritance pattern of susceptibility to aminoglycoside toxicity.
  • To identify specific aminoglycoside antibiotics exhibiting cross-susceptibility.

Summary:

  • Familial investigation revealed cross-susceptibility among certain aminoglycoside antibiotics.
  • Individuals with a family history of aminoglycoside-induced deafness showed increased susceptibility to toxicity, even at low doses.
  • This susceptibility is primarily inherited maternally and influenced by general chromosomes.
  • Children with a family history are particularly vulnerable to aminoglycoside toxicity.

Impact:

  • Highlights the importance of inquiring about family medical history before prescribing aminoglycosides.
  • Suggests prohibiting aminoglycoside use in patients with a history of maternal inheritance of deafness.
  • Informs clinical practice and genetic counseling regarding aminoglycoside safety.

Related Concept Videos

Determination of Multiple Dosing Parameters: Steady-State, Minimum and Maximum Concentrations01:15

Determination of Multiple Dosing Parameters: Steady-State, Minimum and Maximum Concentrations

Gentamicin, an aminoglycoside antibiotic, is commonly administered via intermittent intravenous infusion to treat severe infections. An intermittent one-hour infusion of gentamicin, administered at eight-hour intervals, allows for precise control of plasma drug concentrations, minimizing toxicity while ensuring therapeutic efficacy. Pharmacokinetic principles govern the dynamics of plasma concentrations and can be mathematically described using specific equations.The plasma drug concentration...
216
Drug Accumulation During Multiple Dosing: Intermittent IV Infusions01:24

Drug Accumulation During Multiple Dosing: Intermittent IV Infusions

Intermittent intravenous (IV) infusion is a method of drug administration where medications are delivered over short infusion periods followed by intervals of no drug delivery. This approach helps to prevent sustained high drug concentrations in the bloodstream, reducing the risk of adverse effects associated with prolonged exposure. Unlike continuous infusion, steady-state concentrations may not be achieved during a single dosing cycle but can be reached through repeated...
222
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Excretion01:18

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Excretion

In geriatric patients, renal physiology undergoes significant changes, including diminished renal blood flow and a lower glomerular filtration rate (GFR), leading to alterations in medication clearance. Drugs such as aminoglycoside antibiotics, lithium, and digoxin, which rely on glomerular filtration for removal from the body, particularly impact pharmacokinetics. These drugs tend to have slower clearance rates in older adults, necessitating careful dosage considerations.Evaluation of renal...
221
Pharmacokinetics: Drug–Drug Interactions01:25

Pharmacokinetics: Drug–Drug Interactions

Drug interactions occur when the pharmacological effect of one drug is altered by another substance, either enhancing or diminishing its activity. The drug whose activity is altered is known as the object drug, and the substance causing the alteration is called the agent drug or the precipitant. The net effects of these interactions are mostly undesirable, leading to decreased effectiveness or increased adverse effects. In rare cases, interactions can be beneficial, such as the enhanced...
325
Estimation of k and VD of Aminoglycosides01:20

Estimation of k and VD of Aminoglycosides

Aminoglycosides are a class of antibiotics used to treat various bacterial infections. Clinicians must determine the elimination rate constant (k) and volume of distribution (VD) to optimize therapeutic efficacy and minimize toxicity. The k value represents the rate at which the drug is removed from the body, and the VD reflects the degree to which the drug distributes into body tissues. Accurately estimating these parameters allows healthcare professionals to tailor drug dosing to individual...
199
Combined Effects of Drugs: Synergism01:27

Combined Effects of Drugs: Synergism

Synergism is a useful mechanism where combining two or more drugs is more effective than each constituent used alone. Such combinations are also called supra-additive interactions. The drugs collectively enhance the final therapeutic effect by acting on different targets. Another advantage is that the low dose of each constituent drug is sufficient to achieve the desired effect. This helps reduce the duration of therapy and lower the adverse effects of these drugs.
Such synergistic combinations...
6.7K