A teratogen is something that can cause birth defects or abnormalities in a developing embryo or fetus upon exposure. Teratogens include some medications, recreational drugs, tobacco products, chemicals, alcohol, certain infections, and in some cases, health problems such as uncontrolled diabetes in pregnant people.
What are the 4 types of teratogens?
They are:
Toxoplasmosis: A parasitic infection most often associated with kitty litter.Others: Like Treponema pallidum, a bacterial infection that causes syphilis.Rubella: A viral infection that is also known as German measles.Cytomegalovirus (CMV): A common viral infection.
What are 2 common teratogens?
Teratogenic agents include infectious agents (rubella, cytomegalovirus, varicella, herpes simplex, toxoplasma, syphilis, etc.); physical agents (ionizing agents, hyperthermia); maternal health factors (diabetes, maternal PKU); environmental chemicals (organic mercury compounds, polychlorinated biphenyl or PCB,
Where are teratogens 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.
Does cat litter have teratogens?
Toxoplasmosis is an infection you can get from eating undercooked meat or touching cat poop or a litter box. It’s caused by a very common parasite called Toxoplasma gondii.
What are the principles of Teratology?
In considering the effects of drugs on pregnancy, it is important to remember the 6 principles of teratology: genetic susceptibility, development stage, mechanisms, end points, access, and dose response.
Do babies actually kick?
Feeling a baby kick is a normal part of being pregnant. A new study, however, sheds more insight into why a fetus kicks — and how it helps them develop. A recent study in Scientific Reports found that kicking can help the fetus “map” their body and explore their surroundings.
What are the effects of teratogens?
Teratogens are drugs, chemicals, or even infections that can cause abnormal fetal development. There are billions of potential teratogens, but only a few agents are proven to have teratogenic effects. These effects can result in a baby being born with a birth defect.
What is the most common teratogen worldwide?
Exposure to alcohol in utero is the most common teratogenic cause of developmental disabilities, including microcephaly, cognitive disability, learning disabilities, ADHD and behavioural challenges. Fetal Alcohol Spectrum Disorder (FASD) occurs worldwide in approximately 1.9 per 1000 live births.
What is teratogenesis mean?
Teratogenesis is the creation of a deformed organism. A teratogen is any agent that physically or chemically alters developmental processes and produces congenital deformities.
Is thalidomide a teratogen?
Thalidomide is a potent teratogen that induces a range of birth defects, most commonly of the developing limbs.
What are three symptoms that might occur in a baby born with fetal alcohol syndrome?
Symptoms
Distinctive facial features, including small eyes, an exceptionally thin upper lip, a short, upturned nose, and a smooth skin surface between the nose and upper lip.Deformities of joints, limbs and fingers.Slow physical growth before and after birth.Vision difficulties or hearing problems.
What harmful substances can pass from mother to baby?
Tobacco, alcohol and drugs can have harmful effects on anyone’s health. When a pregnant or nursing woman uses these substances, her baby also is exposed to them, for all substances cross the placenta through the umbilical cord and enter into the baby’s bloodstream.
What are the teratogenic drugs?
A drug is a teratogen if its administration to the pregnant mother, directly or indirectly, causes a structural or functional change in the fetus or child. Organ formation within the fetus occurs in the first 3 months of pregnancy, teratogenic drugs taken in this period therefore tend to cause structural defects.
What products contain teratogens?
Teratogens include:
Some medicines.Street drugs.Alcohol.Tobacco.Toxic chemicals.Some viruses and bacteria.Certain health conditions, such as uncontrolled diabetes.
When do teratogens have their greatest effects?
The embryonic period, during which organogenesis takes place, occurs between implantation at around 14 days to around 60 days postconception. This is usually the most sensitive period to teratogenesis when exposure to a teratogenic agent has the greatest likelihood of producing a malformation.
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