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Acitretin is a metabolite of etretinate, which was used prior to the introduction of acitretin. Etretinate was discontinued because it had a narrow therapeutic index as well as a long elimination half-life (t 1/2 = 120 days), making dosing difficult. In contrast, acitretin's half-life is approximately 2 days.
Etretinate has been replaced by acitretin, the free acid (without the ethyl ester). While acitretin is less lipophilic and has a half-life of only 50 hours, it is partly metabolized to etretinate in the body, [ 2 ] so that it is still a long-acting teratogen and pregnancy is prohibited for two years after therapy.
Masters and Johnson met in 1957 when William Masters hired Virginia Johnson as a research assistant to undertake a comprehensive study of human sexuality. According to author Thomas Maier , as part of their clinical research Masters and Johnson observed paid volunteers engaging in sexual activity while hooked to wires in their lab. [ 5 ]
A study of 71 female patients who received isotretinoin treatment from 2010 to 2020 at Children's National Hospital found that iPledge requirements unjustifiably increased the cost of treatment for patients with the potential to become pregnant, especially when windows were missed requiring additional follow up medical appointments and repeated ...
According to a study conducted by Whitcome, et al., lumbar lordosis can increase from an angle of 32 degrees at 0% fetal mass (i.e. non-pregnant women or very early in pregnancy) to 50 degrees at 100% fetal mass (very late in pregnancy). Postpartum, the angle of the lordosis declines and can reach the angle prior to pregnancy.
The new study found that women who had higher levels of fluoride during pregnancy reported later that their kids were more likely to have temper tantrums, complain of vague headaches and ...
The Dunedin Multidisciplinary Health and Development Study (also known as the Dunedin Study) is a detailed study of human health, development and behaviour.Based at the University of Otago in New Zealand, the Dunedin Study has followed the lives of 1037 babies born between 1 April 1972 and 31 March 1973 at Dunedin's former Queen Mary Maternity Centre since their birth.
Pregnancy is an absolute contraindication as with most other vitamin A products, it should also be avoided when it comes to systemic use in any women that is of childbearing potential and not taking precautions to prevent pregnancy. [1] Toctino (the oral capsule formulation of alitretinoin) contains soya oil and sorbitol.