What is male mediated teratogenesis?

Male-mediated exposures that increase the rate of mutation during spermatogenesis may well contribute to teratogenesis, as could those that produce other abnormalities in maturing spermatozoa or seminal fluid.

What is teratogenic effect?

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 are the causes of Teratology?

Causes of teratogenesis can broadly be classified as:

• Toxic substances, such as, for humans, drugs in pregnancy and environmental toxins in pregnancy. Potassium iodide is a possible teratogen.
• Vertically transmitted infection.
• Lack of nutrients.
• Physical restraint.
• Genetic disorders.
• Alcohol consumption during pregnancy.

How do teratogens affect normal prenatal development?

As a baby grows in the womb, teratogens may affect parts of the baby’s body as they are forming. For example, the neural tube closes in the first 3 to 5 weeks of the pregnancy. During this time, teratogens can cause neural tube defects such as spina bifida.

What are teratogenic effects on fetus?

Teratogens may affect the embryo or fetus in a number of ways, causing physical malformations, problems in the behavioral or emotional development of the child, and decreased intellectual quotient (IQ) in the child.

What is the meaning of teratogenic?

Definition of teratogenic : of, relating to, or causing developmental malformations teratogenic substances teratogenic effects.

What are 4 teratogens?

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

Does teratogenic syndrome appear in offspring of male mammals poisoned by toxins?

A number of experiments have been conducted to study the progeny of male mammals poisoned with proven mammalian teratogens. In none of these studies has the teratogenic syndrome (easily demonstrable as an effect of the drug or toxin when ingested by the pregnant mother) appeared in the offspring of a male who has been exposed to the toxin.

What do we know about male-mediated effects?

Human and animal studies have contributed to our current understanding of male-mediated effects. Animal studies in the 1980s and 1990s suggested that genetic damage after radiation and chemical exposure might be transmitted to offspring.

Do epigenetic factors influence male-mediated development?

To establish the role of epigenetic factors in male-mediated developmental effects, the environmental factors that induce epigenetic modifications in the germ cells must be shown to be transmitted across generations.

Can teratogens cause infertility in males?

Temporary infertility can occur in males exposed to toxic substances, and teratospermia is well documented. An increased miscarriage rate among the wives of men chronically exposed to toxic substances has been reported. A number of experiments have been conducted to study the progeny of male mammals poisoned with proven mammalian teratogens.