Teratogenic drugs: A teratogen is an agent that can disturb the development of the embryo or fetus. Teratogens halt the pregnancy or produce a congenital malformation (a birth defect). Classes of teratogens include radiation, maternal infections, chemicals, and drugs.
Also to know is, what are some teratogen examples?
Other examples of teratogens found in the environment and in extraordinary circumstances can include metals, chemicals, radiation, and even heat. Examples of these teratogens can include mercury, potassium iodide, nuclear fallout radiation, and even high-temperature hot tubs!
Furthermore, what is the most common teratogen? The most common malformations include craniofacial dysmorphisms, cleft palate, thymic aplasia, and neural tube defects. The tranquilizer thalidomide is one of the most famous and notorious teratogens.
Additionally, what are 4 teratogens?
Teratogens are classified into four types: physical agents, metabolic conditions, infection, and finally, drugs and chemicals. The word teratogen originates from the Greek word for monster, teratos.
What are some teratogens in pregnancy?
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.
Is smoking a teratogen?
Types of Teratogens Perhaps the two most important teratogens today are alcohol and smoking. They are among the leading preventable causes of birth defects and developmental disabilities. Infectious Agents: Rubella, cytomegalovirus, varicella, herpes simplex, toxoplasma, syphilis, etc.Is aspirin a teratogen?
Aspirin has not been formally assigned to pregnancy category by the FDA. Aspirin use in pregnancy has been associated with alterations in both maternal and fetal hemostasis. In addition, high doses have been associated with increased perinatal mortality, intrauterine growth retardation, and teratogenic effects.Is caffeine a teratogen?
The teratogenic effect of caffeine has been clearly demonstrated in rodents. The sensitivity of different animals species is variable. 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.Is alcohol a teratogen?
One teratogen that affects the central nervous system is alcohol. Alcohol, at any time during the pregnancy, has the potential to cause birth defects and health problems in the baby, since the central nervous system is sensitive to teratogens the entire nine months of gestation.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.Why do teratogens cause birth defects?
Teratogens are environmental factors that result in permanent structural or functional malformations or death of the embryo or fetus. Many congenital malformations are of unknown origin, but known teratogens include drugs, maternal illnesses and infections, metal toxicity, and physical agents (e.g., radiation).Where is teratogen found?
Teratogens can also be found at home or the workplace. The effect is related to type of agent, dose and duration and time of exposure. The first half of pregnancy is the most vulnerable.What stage of pregnancy are teratogens most harmful?
Most teratogens are harmful only during a critical window of development (e.g., thalidomide is teratogenic only between days 28 and 50 of pregnancy). Teratogenic agents inhibit specific receptors or enzymes or disrupt specific developmental pathways (e.g., some agents show neurotropism or cardiotropism).What is the most critical stage of pregnancy?
The first trimester is the most critical time in your pregnancy. Although the fetus at the end of three months is only about 4 inches long and weighs less than 1 ounce, all of its functions have begun to form — major organs and nervous system, heartbeat, arms, fingers, legs, toes, hair, and buds for future teeth.How can you prevent exposure to teratogens?
For a few birth defects, you may be able to decrease your risk by taking certain steps:- See your doctor before getting pregnant.
- Know your risk factors.
- Take a daily multivitamin before and during pregnancy.
- Maintain a healthy weight.
- Use medications wisely.
- Take care of medical conditions before pregnancy.
Is Mercury a teratogen?
Methylmercury (MeHg) is an organic form of mercury that can damage the developing brains of human fetuses. Women who consume methylmercury during pregnancy can bear children who have neurological issues because methylmercury has toxic effects on the nervous system during embryonic development.What is a teratogen example?
Medical Definition of Teratogen Teratogen: Any agent that can disturb the development of an embryo or fetus. Teratogens may cause a birth defect in the child. However, sometimes a medication necessary for health is also a teratogen: thyroid medication, blood thinners, and lithium are just a few examples.Is iron a teratogen?
In human pregnancies, maternal absorption of iron is markedly curtailed in the first trimester. In a murine model, iron was teratogenic in the analogous embryonic period. Although iron is a weak mutagen, it is a powerful oxidant and a catalyst of formation of hydroxyl radicals.Does acid cause birth defects?
Many of the studies on LSD are very old and have different results. There are reports of babies being born with birth defects, and reports of babies born without birth defects following LSD use during pregnancy. One study of pregnant women given LSD for medical reasons did not show a link with causing birth defects.Is estrogen a teratogen?
ORAL CONTRACEPTIVES AND TERATOGENICITY. Both progestogens (progesterone as well as synthetic progestins) and estrogens have been implicated as teratogens and mutagens. In fact, such data probably never will exist because the progestin exposure during pregnancy is becoming uncommon.What causes teratogen?
Teratogens are substances or other factors that can cause congenital abnormalities, which are also called birth defects. Examples of teratogens include certain chemicals, medications, and infections or other diseases in the mother.Which organs in the mother's body are most affected by becoming pregnant?
The main organs and systems affected by a woman's pregnancy are:- Cardiovascular system.
- Kidneys.
- Respiratory System.
- Gastrointestinal System.
- Skin.
- Hormones.
- Liver.
- Metabolism.
