Question: What are teratogens?

What are some examples of a teratogen?

Known Teratogens

  • angiotensin converting enzyme (ACE) inhibitors, such as Zestril and Prinivil.
  • alcohol.
  • aminopterin.
  • androgens, such as methyltestosterone (Android)
  • busulfan (Myleran)
  • carbamazepine (Tegretol)
  • chlorobiphenyls.
  • cocaine.

What are teratogens in pregnancy?

A teratogen is any agent that causes an abnormality following fetal exposure during pregnancy. Teratogens are usually discovered after an increased prevalence of a particular birth defect.

What are 4 teratogens?

Teratogens are classified into four types: physical agents, metabolic conditions, infection, and finally, drugs and chemicals.

What is a human teratogen?

A human teratogen is an agent that alters the growth or structure of the developing embryo or fetus, thereby causing birth defects.

Is caffeine a teratogen?

In humans, caffeine does not present any teratogenic risk. The increased risk of the most common congenital malformations entailed by moderate consumption of caffeine is very slight.

What are 3 examples of teratogens?

This page describes harmful substances, called teratogens, which a woman should avoid during pregnancy. These include certain chemicals, medications, social drugs, alcohol, smoking, and infections.

What is the most harmful teratogen?

Perhaps the two most important teratogens today are alcohol and smoking. They are among the leading preventable causes of birth defects and developmental disabilities.

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How do you prevent teratogens?

Do not use chemicals that may harm your child – This includes pesticides, fungicides, rodenticides, or harsh cleaning products. Do not smoke, use drugs or consume alcohol during pregnancy – These teratogens greatly increase the risk of fetal birth defects and other life threatening conditions.

Is stress a teratogen?

Maternal psychological stress has essentially been conceptualized as a teratogen, that is, an agent that can generate deleterious perinatal and/or developmental outcomes.

What is the most common teratogen?

Alcohol: One of the most commonly used teratogens is alcohol, and because half of all pregnancies in the United States are unplanned, it is recommended that women of child-bearing age take great caution against drinking alcohol when not using birth control or when pregnant (CDC, 2005).

What medications are teratogens?

Drugs that are capable of acting as teratogens include:

  • ACE (angiotensin converting enzyme) inhibitors such as:
  • Acne medication isotretinoin (Accutane, Retin-A).
  • Alcohol ingested chronically or in binges.
  • Androgens (male hormones).
  • Antibiotics tetracycline (Achromycin), and doxycycline (Vibramycin), and streptomycin.

What is not a teratogen?

Non-ionizing radiation is not teratogenic. Just as the mother being outside in the sunlight during pregnancy does not interfere with the development of the fetus, microwaving food while pregnant is not known to increase the risk for birth defects or health problems.

Is alcohol a teratogen?

Both alcohol and its primary metabolite, acetaldehyde, are teratogenic. Exposure during pregnancy may lead to fetal alcohol syndrome (FAS), and this is said to occur in a substantial proportion of infants born to mothers who are chronic, heavy daily drinkers.

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How many teratogens are identified?

There have been thousands of medications studied over the years, and only about 30 to 40 have been found to have teratogenic effects in humans.

Which is proven human teratogen?

There are only a limited number of drugs proven to be human teratogens including thalidomide, isotretinoin, coumarin derivates, valproic acid, and folate antagonists. There are some examples of drugs in which the dose has proven to be a major determinant of their teratogenicity in humans.

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